2024-03-29T05:51:59Z
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/index/oai
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/603
2023-11-30T16:37:49Z
JKM:ART
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/460
2021-03-18T13:01:03Z
JKM:ART
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/238
2016-08-20T14:01:41Z
repo:ART
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/1316
2023-11-11T09:03:26Z
prosiding:ART
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/373
2018-10-01T05:50:59Z
repo:ART
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/1207
2023-11-30T16:37:49Z
JKM:ART
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/1216
2023-06-09T03:34:50Z
prosiding:ART
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/239
2016-08-20T14:01:41Z
repo:ART
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/1319
2023-11-11T09:03:26Z
prosiding:ART
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/674
2019-01-31T04:58:55Z
JKM:ART
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/978
2023-07-27T20:05:36Z
JKM:ART
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/244
2016-08-20T14:01:41Z
repo:ART
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/1321
2023-11-11T09:03:26Z
prosiding:ART
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/459
2019-02-13T04:52:24Z
JKM:ART
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/236
2016-08-20T14:01:41Z
repo:ART
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/918
2023-07-27T21:05:44Z
JA:ART
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/647
2018-10-01T05:10:35Z
rp:ART
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/1208
2023-11-30T16:37:22Z
JKM:ART
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/743
2020-02-10T01:45:28Z
JA:ART
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/237
2016-08-20T14:01:41Z
repo:ART
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/1310
2023-11-11T09:03:25Z
prosiding:ART
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/637
2018-10-01T05:50:58Z
repo:ART
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/42
2017-12-15T04:01:27Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/42
2017-12-15T04:01:27Z
JURNAL KIMIA MULAWARMAN
Vol 13 No 1 (2015)
ANALISIS FITOKIMIA DAN TOKSISITAS (BRINE SHRIMP LETHALITY TEST) EKSTRAK SERBUK SARI DARI Trigona incisa
Fiergiyanti, Novalien; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
-, Erwin; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
-, Syafrizal; Jurusan Biologi
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
2016-01-19 12:29:58
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
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This license requires that reusers give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes. If others remix, adapt, or build upon the material, they must license the modified material under identical terms.
BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/42
id
The phytochemical, brine shrimp lethality and activity antioxidant test and secondary metabolits of bee pollen have been conducted. The pollen samples are extract with solvent ethanol by masseration method and that is concentrated by using rotary evaporator. The ethanol crude extract obtained are fractioned with solvent ethanol and solvent ethyl acetat. Based on secondary metabolits phytochemical test of bee pollen showed that ethanol crude extract contains alkaloid and fenolik. Ethanol fraction extract contains alkaloid. Ethyl acetat fraction extract contains alkaloid and fenolik. In brine shrimp lethality test, the increase larvae (Artemia salina L.) death and data was yielded recorded then processed using SAS Probit Analysis to determine the lethal concentration 50% (LC50) value. The results of this test obtained data and showed that the most active fraction is ethanol fraction extract with value of LC50 was equel to 249,60 ppm.Keywords: Bee pollen, phytochemical test, brine shrimp lethality test (BSLT).
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/1017
2023-12-02T15:37:51Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1017
2023-12-02T15:37:51Z
JURNAL KIMIA MULAWARMAN
Vol 20 No 2 (2023); 85-91
SPECTROPHOTOMETRIC ANALYSIS OF CHLORAMPENICOL IN TIGER PRAWNS (PENAEUS MONODON) BASED ON THE DIAZOTATION REACTION
Arif, Moh. Syaiful; Department of Chemistry, Mulawarman University
Kurniawan, Indra; Department of Chemistry, Mulawarman University
Yusuf, Bohari; Department of Chemistry, Mulawarman University
2023-05-26 00:00:00
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
This license requires that reusers give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes. If others remix, adapt, or build upon the material, they must license the modified material under identical terms.
BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1017
en
Spectrophotometric analysis of chloramphenicol in tiger prawns (Penaeus Monodon) based on the diazotation reaction has been carried out. Sulfanilamide is used as a source of diazo salt to be coupled with chloramphenicol. In this study, several optimizations were carried out such as optimization of temperature, volume of HCl, volume of NaNO2, volume of sulfanilamide and contact time. Diazonium salt coupled with sulfanilamide produces a clear yellow compound with a maximum wavelength of 400.941 nm. The results of the analysis chloramphenicol on tiger shrimp, obtained the coefficient of variation were 4.026 %; 1.951 %; and 4.277 %.. Accuracy ranges from 99.7143% to 100.8730%. The Limit of Detection value is 6.24 mg/mL and the Limit of Quantization value was 20.803 mg/mL. The sensitivity value is 0.0021 mL /mg.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/813
2021-01-27T09:50:23Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/813
2021-01-27T09:50:23Z
JURNAL KIMIA MULAWARMAN
Vol 17 No 2 (2020); 87-93
MODIFICATION OF NATURAL ZEOLITES WITH TiO2 FOR DEGRADATION OF RHODAMINE B FROM WASTE WOVEN GLOVES WAS PHOTOCATALYSIS
Gustina, Limas Rahmita; Universitas Mulawarman
2020-05-29 00:00:00
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
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This license requires that reusers give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes. If others remix, adapt, or build upon the material, they must license the modified material under identical terms.
BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/813
Telah dilakukan penelitian tentang pengaruh waktu kontak, variasi berat katalis TiO2-Zeolit, tanpa penggunaan lampu UV dan perbandingan material (Zeolit, TiO2 dan TiO2-Zeolit). Tahap awal meliputi preparasi zeolit alam, aktivasi dengan larutan HCl 3 N, modifikasi melalui proses impregnasi dan diaplikasikan secara fotokatalisis. TiO2-Zeolit dikarakterisasi dengan menggunakan FTIR, SEM-EDX dan XRD. Analisis FTIR menunjukkan bilangan gelombang dari zeolit dan TiO2 muncul pada material TiO2-Zeolit. SEM-EDX menunjukkan bentuk morfologi bentuk partikel-partikel bulat yang seragam dengan komposisi TiO2 38,15%. Pola XRD menunjukkan adanya TiO2 pada material TiO2-Zeolit. Berdasarkan data tersebut diperoleh waktu kontak optimum 30 menit dengan dengan berat katalis optimum sebesar 0,5 gram TiO2-Zeolit menghasilkan persen degradasi yang lebih tinggi dibandingkan menggunakan Zeolit dan TiO2 yakni masing-masing sebesar 98,73%; 51,00% dan 36,26%, sedangkan degradasi tanpa penggunaan lampu UV sebesar 84,84%.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/8
2023-02-13T13:42:02Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/8
2023-02-13T13:42:02Z
JURNAL KIMIA MULAWARMAN
Vol 12 No 2 (2015)
PENGGUNAAN INTERNAL STANDAR NITROBENZENA UNTUK PENENTUAN KUANTITATIF BTEX DALAM KONDENSAT GAS ALAM DENGAN KROMATOGRAFI GAS
Hidayat, Rohmat; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
Pasaribu, Subur P; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
Saleh, Chairul; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
2015-09-22 00:00:00
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
This license requires that reusers give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes. If others remix, adapt, or build upon the material, they must license the modified material under identical terms.
BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/8
id
This research has been carried out the selection of three types of compounds to be used as an Internal Standard (ISTD) on the quantitative determination of BTEX in the natural gas condensate, they are pyridine and nitrobenzene marpholine that have the similar chemical compound with the analyte (aromatic hydrocarbons). The ISTD selection is done by mixing ISTD with natural gas condensate samples into the solvent carbon disulfide (CS 2 ), and then 1μl injected into the Gas Chromatography (GC) to know the column elution or separation of the mixture. From the results of research that have been conducted on three types compounds, it was found that pyridine can not be used as ISTD because it can not be eluted, as well marpholine CS 2 reacts rapidly with solvent to form a white solid before it is injected. While nitrobenzene mixtures eluted at a retention time of + 76.953 min after o-xylene. Next step is preparation ISTD nitrobenzene, BTEX standard solution and sample into the solvent CS2, based on the dilution of wight base usinganalytical balance, to obtain a concentration of ISTD in the same amount that is 4 g/g on BTEX standard solution and the sample. BTEX standard solution prepared with 6 variations concentrations of K 1 to K 6 that reflect the concentration of BTEX in the sample. From BTEX standard solution K1 to K6, all of them are injected into the gas chromatograph, then it is made the multi-level calibration curve by comparing the area ratios of analyte/ISTD vs concentration ratio of analyte/ISTD. The Quantitative determination of BTEX in the natural gas condensate is done by interpolating the regression equation obtained from the multi level calibration curve linearity for each aromatic BTEX compounds. The correlation coefficient (r) is obtained varies the 0.9993 to 0.9997. Other parameters such as precision and accuracy were also evaluated. So from this study is obtained BTEX concentrations in natural gas condensate with the ISTD nitrobenzene. They are Benzene is 3.0605 % wt; Toluene is 7.0053 % wt; Ethylbenzene is 0.8568 % wt, and ortho-meta-para-Xylenes are 2.8873 % wt; 0.8704 % wt ; 0.8026% wt.Keywords : ISTD, nitrobenzene, pyridine, marpholine, CS2, preparation, natural gas condensate, BTEX, gaschromatography.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/80
2017-09-02T13:19:18Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/80
2017-09-02T13:19:18Z
JURNAL KIMIA MULAWARMAN
Vol 8 No 1 (2010)
PEMANFAATAN ARANG AKTIF DARI TEMPURUNG Jatropha curcas L. YANG TERMODIFIKASI SEBAGAI ADSORBEN LOGAM TEMBAGA (Cu)
Wirawan, Teguh; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
2016-02-24 08:44:46
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
This license requires that reusers give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes. If others remix, adapt, or build upon the material, they must license the modified material under identical terms.
BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/80
id
A research on the application of activated carbon from Jatropha curcas L shell which is modified as the copper adsorbent has been conducted. The research was varied by series of initial pH 1, 2, 3, 4, and 5 and the contact time 15, 30, 60, 90, and 120 minutes and its effect to copper adsorption by activated and modified carbon from Jatropha curcas L shell. The result showed that the optimum pH for AA-FISIK, AA-EDTA and AA-HNO3 is 3 and for AA-HCl is 5. The optimum contact time is 90 minutes for AA-HCL and AA-EDTA; 60 minutes for AA-HNO3; and 120 minutes for AA-PHYSICAL. It was also found that higher initial concentration will increase the total amount of adsorbed copper.Keywords: adsorption, copper, activated carbon, Jatropha curcas L
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/433
2023-06-20T02:05:00Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/433
2023-06-20T02:05:00Z
JURNAL KIMIA MULAWARMAN
Vol 16 No 1 (2018); 27-31
ACTIVITIES OF AMYLASE, PROTEASE and LIPASE FROM HONEY Trigona sp, Apis mellifera and Apis dorsata
Putra, Hendric Surya
Astuti, Winni
Kartika, Rudi
2018-11-29 00:00:00
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
This license requires that reusers give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes. If others remix, adapt, or build upon the material, they must license the modified material under identical terms.
BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/433
id
Activities of amylase, protease and lipase from honey Trigona sp, Apis mellifera and Apis dorsata, determination protein concentration and the activity protease done with Bradford method, the determination of the glucose standard and activity amylase done with 3,5-dinitro salicylic acid (DNS) method and activity lipase done with acid-base titration with coconut oil substrate. The honey from Trigona sp has value of the activity amylase and lipase respectively by 0,0136 U / mg and 0,359 U/mg, whereas honey Apis mellifera has activity of protease, amylase and lipase of each 1,22 x 10-6 U/mg; 0,944 U/mg and 0,304 U/mg and then honey Apis dorsata has amylase and lipase activity of each of 0,0645 U/mg and 0,287 U/mg.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/904
2020-02-16T16:11:48Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/904
2020-02-16T16:11:48Z
JURNAL KIMIA MULAWARMAN
Vol 17 No 1 (2019); 31-36
ISOLATION OF STEROID COMPOUNDS IN THE n-HEKSANA FRACTION FROM JARUM TUJUH BILAH LEAVES EXTRACT (Leuenbergeria bleo (Kunth) D.C.)
Yana, Yuli; Jurusan Kimia FMIPA Universitas Mulawarman
Saleh, Chairul; Jurusan Kimia FMIPA Universitas Mulawarman
Hindryawati, Noor; Jurusan Kimia FMIPA Universitas Mulawarman
2019-11-29 00:00:00
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
This license requires that reusers give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes. If others remix, adapt, or build upon the material, they must license the modified material under identical terms.
BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/904
This study aims to find secondary metabolites isolated from the leaves of the Jarum Tujuh Bilah (Leuenbergeria bleo (Kunth) D.C.). The method used was maceration, fractionation and column chromatography and was identified using Fourier Transformra Infra Red (FT-IR). The phytochemical preliminary test of the n-hexane fraction contains the steroid secondary metabolite compound. The results of column chromatography produced 75 vial bottles which were then identified by thin layer chromatography and produced 8 combined fractions (A-H fraction) based on the similarity of characterization, from the 8 fractions D and E forming yellow crystals. The yellow crystals formed are then cleaned and recrystallized to produce 11.7 mg white amorphous crystals. Compounds are characterized by FTIR spectrometers. Based on FTIR analysis, isolates showed IR spectrum λ max cm-1: 3375; 2927,98; 2852,18; 1680; 1462,51; 1376.81; 1329.74; 1043,92; 1022.02 and 956.27. Based on the results obtained by isolates, it is suspected that the compound is a steroid sterol.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/842
2023-11-30T16:35:42Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/842
2023-11-30T16:35:42Z
JURNAL KIMIA MULAWARMAN
Vol 19 No 1 (2021); 1-7
VALIDATION OF ION SELECTIVE ELECTRONIC METHODS AT PUPUK KALIMANTAN TIMUR COMPANY FOR DETERMINING AMMONIA LEVELS (NH3) IN AMBIENT AIR
Fidayana, Ristia Asri; FMIPA unmul
Wirawan, Teguh
Panggabean, Aman Sentosa
2021-11-30 00:00:00
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
This license requires that reusers give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes. If others remix, adapt, or build upon the material, they must license the modified material under identical terms.
BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/842
Validation method of ammonia (NH3) determination in ambient air with the ion-selective electrode (ESI) method has been carried out. The purpose of this study is to determine linearity, accuracy, precision, method detection limits, and selectivity. The performance characteristics of the method are determined using standard ammonium chloride solutions. The instrument used to detect ammonia levels is the ion analyzer. The results in the linearity test show an r2 value of 0.9999. Accuracy test results show recovery values in the range of 88.86 to 100.48%. The precision of this method has a value of % RSD smaller than 2/3 CV Horwitz.. The detection limit value of the method was 0.0224 mg/L. The presence of interference ions such as SO2 and NO2 does not affect the measurement of ammonia concentrations. The results of the validation test show that the method used can be used to determine ammonia concentrations in ambient air.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/667
2023-06-20T02:04:26Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/667
2023-06-20T02:04:26Z
JURNAL KIMIA MULAWARMAN
Vol 16 No 1 (2018); 10-15
VALIDATION OF THE METHODS OF Hg DETERMINATION ON WASTE WATER TREATMENT PLANT SAMPLES USING COLD VAPOUR-ATOMIC ABSORPTION SPECTROPHOTOMETER (CV-AAS)TECHNIQUES
anggraini, Rika; Kimia FMIPA
Hairani, Rita; Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
Panggabean, Aman Sentosa; Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2018-11-29 00:00:00
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
This license requires that reusers give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes. If others remix, adapt, or build upon the material, they must license the modified material under identical terms.
BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/667
The research about validation of the method of Hg determination on the sample from wastewater treatment plant (WWTP) PT. Badak NGL Bontang, Kalimantan Timur using cold vapour-atomic absorption spectrophotometer (CV-AAS) techniques has been conducted. To obtain a valid measurement result, determinations of the important several parameters that influence the method validation are used. The results of research showed that 20% SnCl2 solution could be used as a reducing agent. The analytic performance of measurement obtain is good, showed with the linearity (r) value ≥ 0.995, LOD was 0.2530 ppb, LOQ was 0.8432 ppb, MDL was 0.6427 ppb and repeatability and reproducibility are shown as % RSD < 2/3 CV Horwitz values. The accuracy of this method is very good with a percentage of recovery value of 114.88%. Based on the results of this research, CV-AAS method can be used in the determination of Hg in WWTP samples with the valid results.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/608
2023-06-20T02:08:04Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/608
2023-06-20T02:08:04Z
JURNAL KIMIA MULAWARMAN
Vol 15 No 2 (2018); 87-93
INCORPORATION VITAMIN E FROM PFAD IN MATRIX OF MIXED GALAKTOMANAN KOLANG-KALING (Arenga pinnata) AND GUM ACASIA
ZULMI, REZA; Magister Ilmu Kimia FMIPA - USU
Kaban, Jamaran; FMIPA USU
Tarigan, Juliati; FMIPA USU
2018-07-24 12:35:32
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
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BY: Credit must be given to you, the creator.
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url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/608
Incorporation of vitamin E from palm fatty acid distillate (PFAD) into matrix of mixed gum acacia and galactomannan from Arenga pinnata (kolang-kaling) (GAP) has been studied. Galactomannan extracted from Arenga pinnata was 4.7%. Incorporations were conducted using using 7 gram gum acacia (GA), 1.3 gram vitamin E from PFAD and GAP varied from 0.1 – 0.4 gram in 100 ml total volume. The thickness of the film occurred in the range of 0.600 – 0.780 mm. In the increment of GAP amount the viscosity and stability of film was increased. The best film obtained which most compatible and has viscosity similar with standard of ISO 9001 – 2008 and ISO 22000 – 2005 was from formula 3 contained 0.2 gram GAP. The oncentration of vitamin E determined using gas chromatography was 75.4501%. The composition of vitamin E was tocotrienol 74.41% and tocopherol 25.59%.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/199
2018-03-16T08:50:56Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/199
2018-03-16T08:50:56Z
JURNAL KIMIA MULAWARMAN
Vol 13 No 2 (2016)
Analisis Residu Klorpirifos Dalam Sayur-Sayuran Dengan Teknik High Performance Liquid Chromatography (HPLC)
Panggabean, Aman Sentosa; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
2016-06-14 09:58:09
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url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/199
id
The research about analysis of chlorpyrifos residue in vegetables by using High Performance Liquid Chromatography (HPLC) technique has been done. To obtain the optimal measurement results, the measurement performed several important parameters in the chromatographic system was composition of mobile phase, volume injection sample, flow rate and pH eluent. Optimum measurement conditions obtained was mobile phase composition (water : methanol) with 70 : 30, volume injection sample are 5 mL, flow rate are 0.5mL/menit and pH eluent are 7. The analytical performance that obtained is good showed with the reproducibility value as percentage coefficient variance (% CV) was 0.0664%, limit of detection (LOD) was 0.44 ppm, with a recovery percentage of > 95%. The results obtained showed the HPLC technique can be used for the routine analysis in the determination of chlorpyrifos for the vegetable samples.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/33
2016-01-19T02:24:29Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/33
2016-01-19T02:24:29Z
JURNAL KIMIA MULAWARMAN
Vol 10 No 2 (2013)
ANALISIS KEMAMPUAN KIAMBANG (Salvinia molesta) UNTUK MENURUNKAN KONSENTRASI ION LOGAM Cu (II) PADA MEDIA TUMBUH AIR
Yuliani, Dewi Eka; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
Sitorus, Saibun; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
Wirawan, Teguh; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
2016-01-19 10:23:35
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url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/33
id
This research was purposed to know about the water lettuce (Salvinia molesta) absorption ability for metal Cu (II) ion and the influence of plant sum variation and its contact time. The simulation is done by planting the water lettuce (Salvinia molesta) at water media as a growing place which prepared in 5 place that each be volumed by 5 l the plant of Cu solution as 20 mg/L, Then, the water lettuce (Salvinia molesta) also be volumed as 0 (blank), 10, 15, 20 and 25 as its variation. Then, this research also variated its contact time as 0, 3, 6, 9, 12, 15, 18 and 21 days. The concentration of metal Cu (II) ion in plant media was analyzed with Atomic Absorption Spectrophotometer (AAS). The research showed that the water lettuce (Salvinia molesta) was capable to absorp the metal Cu (II) ion with the optimal absorbtion happened at the 9th day in 15 plants sum of variation, with total percentage of the metal Cu (II) is absorbted to 81.68 %.Keyword: Water lettuce (Salvinia molesta), Cu (II), metal, water
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/844
2023-03-26T10:15:00Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/844
2023-03-26T10:15:00Z
JURNAL KIMIA MULAWARMAN
Vol 18 No 1 (2020); 16-21
Ca-ALGINAT UNTUK ADSORPSI Fe DAN Mn PADA AIR GAMBUT
Harfinda, Elliska Murni; Universitas Nahdlatul Ulama Kalimantan Barat
2020-11-27 00:00:00
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BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/844
Ca-alginate for the adsorption of Fe and Mn in peat water has been carried out using a batch method. Brownish water color, low pH, and high content of Fe and Mn metals are obstacles in direct utilization of peat water. Peat water treatment can be done by the adsorption method. The stages of this study began with the preparation of the adsorbent by dripping Na-alginate solution into a variety of CaCl2 solution concentrations. Furthermore, the adsorption of peat water was carried out by batch method with variations in the contact time and mass of the adsorbent to get the adsorbent with the highest % removal. The optimal contact time for Fe and Mn adsorption on peat water is 6 hours. The optimal % removal value for the influence of Fe adsorption contact time for Ca-alginate variations of 0.1 M and 0.2 M CaCl2 solution were 20.38% and 21.19%, respectively. The optimal % removal value for the influence of Mn adsorption contact time for Ca-alginate variations of 0.1 M and 0.2 M CaCl2 solution were 30.98% and 41.37%, respectively. The optimal mass of adsorbent for Fe and Mn adsorption in peat water is 0.75 g. The optimal % removal value for the influence of Fe adsorption mass adsorption for Ca-alginate variations of 0.1 M and 0.2 M CaCl2 solution were 79.28% and 21.67%, respectively. The optimal % removal value for the mass effect of Mn adsorption adsorption for Ca-alginate variation of 0.1 M and 0.2 M CaCl2 solution respectively at 24.44% and 26.13%.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/1004
2023-03-26T10:12:57Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1004
2023-03-26T10:12:57Z
JURNAL KIMIA MULAWARMAN
Vol 18 No 2 (2021); 68-76
Studi Penambatan Molekul Flavonoid Pada Reseptor α-Glukosidase menggunakan PLANTS
Mulyati, Budi; Teknik Industri, Fakultas Teknik, Universitas Nurtanio
Panjaitan, Riong Seulina; Ilmu Farmasi, Fakultas Farmasi, Universitas 17 Agustus 1945 Jakarta
2021-05-30 00:00:00
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BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1004
ABSTRACT
Plants that contain flavonoids are widely used in traditional medicine. Flavonoids can reduce blood glucose levels with their ability as anti-oxidants. The purpose of this study was to determine natural compounds from flavonoid derivatives that have good affinity and conformation and their interactions in inhibiting α-glucosidase (an enzyme that breaks down carbohydrates into glucose) and determine the sequence of ligands that interact more strongly with α protein / enzyme α-glucosidase. Molecular docking is a computational method that aims to imitate the interaction of a ligand molecule with the protein it targets in in-vitro tests. Molecular docking between flavonoids and α-glucosidase receptors was carried out using the PLANTS method to see its affinity. The flavonoids used as ligands were flavones, flavanols and chalcone with the results of the docking scores respectively, -65.41, -64.39 and -63.07 where the standard ligand used in this study was deoxynojirimycin (-77.12). In the active side of the α-Glucosidase enzyme that binds to flavonoid ligands is Gly 555, Glu 526 and Pro 556.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/63
2016-01-27T03:05:22Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/63
2016-01-27T03:05:22Z
JURNAL KIMIA MULAWARMAN
Vol 10 No 2 (2013)
PEMANFAATAN TANAMAN PETUNIA UNGU (Ruellia simplex C.) SEBAGAI PENYERAP LOGAM TIMBAL (Pb) PADA MEDIA TUMBUH TANAH
Wulandari, Mutia; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
-, Alimuddin; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
Yusuf, Bohari; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
2013-01-27 00:00:00
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
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This license requires that reusers give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes. If others remix, adapt, or build upon the material, they must license the modified material under identical terms.
BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/63
id
Has been done a research concerning the use of Petunia Ungu (Ruellia simplex C.) plants as an absorbent lead metal (Pb) in the soil growing medium. The research almed to determine the levels of lead metal in petunia ungu plants and determine the effect of variations of concentrations also to determine the effect of absorption time in plants during planting petunia ungu 1, 2, 3 and 4 weeks then petunia ungu planted in the soil as the growing that was added a solutions of lead respectively 0, 25, 50, 75 and 100 mg/L. A soil sample preparation was conducted by wet digestion method and petunia ungu plants by dry digestion method. Metal levels of lead in the soil samples and petunia ungu plants was measured by atomic absorption spectrophotometer at wavelengths of 283,3 nm. The result of research showed that petunia ungu plants can absorb lead metal, the average levels of lead metal in petunia ungu plants consist of 0 ppm 1, 2, 3 and weeks 1,2303; 1,3190; 1,5064 and 1,6915 mg/Kg. 25 ppm 2,1779; 3,0426; 3,4145 and 3,3643 mg/Kg. 50 ppm 3,1317; 3,4316; 3,8689 and 4,2841 mg/Kg. 75 ppm 3,1179; 4,6695; 6,5676 and 6,6828 mg/Kg. 100 ppm 2,5205; 3,6302; 5,4442 and 6,9167 mg/Kg. beside that a lead metal content in the soil as a growing medium decreased.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/23
2016-01-13T17:24:01Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/23
2016-01-13T17:24:01Z
JURNAL KIMIA MULAWARMAN
Vol 11 No 2 (2014)
UJI AKTIVITAS PERASAN BUAH MENTIMUN (Cucumis sativus L) SEBAGAI BIOLARVASIDA TERHADAP LARVA NYAMUK Aedes aegypti L
Syamsul, Eka Siswanto; Akademi Farmasi Samarinda
Purwanto, Eka Novitasari; Akademi Farmasi Samarinda
2014-05-14 00:00:00
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BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/23
id
Demam Berdarah Dengue (Dengue Hemorragic Fever/DHF) merupakan penyakit infeksi yang disebabkan oleh virus dengue dengan manifestasi klinis demam, nyeri otot, dan nyeri sendi yang disertai leukopenia, ruam, limfadenopati, dan trombositopenia. Penularan infeksi virus dengue terjadi melalui vektor nyamuk genus Aedes sp. Menurut penelitian yang dilakukan oleh laeliyatun dkk (2006) buah mentimun diduga mengandung senyawa saponin dan alkaloid sehingga dapat digunakan sebagai larvasida. Penelitian ini bertujuan untuk mengetahui aktivitas larvasida perasan buah mentimun terhadap larva Aedes aegypti. Perasan buah mentimun dibuat dengan cara memeras sari buahnya. Konsentrasi sediaan uji yang digunakan yaitu 10, 20, 40, dan 80% (v/v). Pengujian larvasida dilakukan dengan cara memasukkan 10 ekor larva instar III dan IV awal ke dalam perasan buah mentimun, kontrol positif berupa abate konsentrasi 10, 20, 40, dan 60% (b/v) sebagai kontrol positif dan air PDAM adalah kontrol negatif. Perlakuan didiamkan selama 24 jam dan diamati jumlah larva yang mati kemudian dilakukan replikasi sebanyak 2 kali. Hasil perhitungan nilai LC50 dari perasan buah mentimun sebesar 43,06 dengan menggunakan metode analisis perhitungan Probit Miller - Tainner. Hal ini menunjukkan bahwa perasan buah mentimun memiliki aktivitas sebagai larvasida.
Kata Kunci: Buah Mentimun, Biolarvasida, Larva Nyamuk Aedes aegypti L
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/521
2023-11-30T16:35:42Z
JKM:ART
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http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/521
2023-11-30T16:35:42Z
JURNAL KIMIA MULAWARMAN
Vol 19 No 2 (2022); 66-68
Fermentasi Singkong Karet (Monihot carthagenensis MÜII) menjadi Etanol dengan Pemanfaatan Albumin Dari Ikan Gabus (Channa striata) Sebagai Sumber Nitrogen Bagi Mikroba
Widyaningrum, Saputri Satriyana; jurusan kimia fakultas matematika dan ilmu pengetahuan alam, unuvirsitas mulawarman
Kartika, Rudi; Jurusan Kimia, FMIPA, Universitas Mulawarman
Erwin, Erwin; Jurusan Kimia, FMIPA, Universitas Mulawarman
2022-05-30 00:00:00
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BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/521
Has been cassava rubber fermentation (M. carthagenensisMÜll) as a raw material for making ethanol with the utilization of fishcork albumin (Channastriata) as nitrogen Saccharomyces cerrevisiae with enzymatic hydrolysis result through 2 stages ieliquification using α-amylase and saccharification stage using gluco -amilase. The best reducing sugar content was obtained at 0.1307%. Based on this research, maximum ethanol content was obtained with 0.5% concentration of nutrient at fermentation time for 232 hours, obtained by result of 12,688% at 5.6 mL distillate volume using gas chromatography method.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/253
2017-12-15T04:00:55Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/253
2017-12-15T04:00:55Z
JURNAL KIMIA MULAWARMAN
Vol 14 No 1 (2016)
UJI TOKSISITAS (Brine Shrimp Lethality Test) DAN AKTIVITAS ANTIOKSIDAN DARI DAUN SINTRONG (Crassocephalum Crepidioides) DENGAN METODE 2,2-diphenyl-1-picrylhidrazil (DPPH)
Pasilala, Fiktor Boni
Tarigan, Daniel
Saleh, Chairul
2016-11-08 00:00:00
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BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/253
id
The phytochemical test, brine shrimp lethality test and antioxidant activity test on secondary metabolits of terap (Artocarpus odoratissimus B.) leaves has been completed. The leaves samples are extracted by masseration method that is concentrated by using rotary evaporator. The total extract are fractioned with n-hexane and ethyl acetate. Based on secondary metabolits phytochemical test of terap (Artocarpus odoratissimus B.) leaves showed that total extract and Ethyl Acetat fraction extract contains alkaloids, phenolics, flavonoids, saponins, steroids and triterpenoids. N-hexane fraction extract contain alkaloids, steroids and tritepenoids. In brine shrimp lethality test, the increase larvae death data was recorded and processed using SAS Probit Analysis to determine the Lethal Concentration 50 % (LC50) value. The results of this test showed that the most active extract is metanol extract with LC50 value of 88.0227 ppm. Based on the antioxidant activity by scavenging activity of DPPH used spectrophotometry was obtained that Inhibition Concentration 50% (IC50) of total extract is 369.0833 ppm, extract of n-hexane fraction is 1532.267 ppm and extract of ethyl acetat fraction is 82.89003 ppm.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/54
2017-09-02T13:19:33Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/54
2017-09-02T13:19:33Z
JURNAL KIMIA MULAWARMAN
Vol 9 No 2 (2012)
PENENTUAN KLORAMFENIKOL DALAM DAGING AYAM BROILER DENGAN METODE HIGH PERFORMANCE LIQUID CHROMATOGRAPHY
Panggabean, Aman Sentosa; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
2016-01-26 13:36:12
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
This license requires that reusers give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes. If others remix, adapt, or build upon the material, they must license the modified material under identical terms.
BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/54
id
Determination of chloramphenicol on broiler meat in traditional market by using High Performance Liquid Chromatography (HPLC) method has been done. The optimal of result determination to obtain, the HPLC system has been optimalized for the important parameters are composition of mobile phase, injection sample volume, flow rate and eluen pH. The result of research shown that the optimum conditions to obtain from the research are composition of mobile phase methanol:water (80:20), injection sample volume 5 µL, flow rate 0.5 mL/minute and eluent pH are 6 has been achieved. The analytical performance of method has been optimalized and gives good performance which shown with reproducibility of this method as coefficient of variation percentage (% CV) was 0.2198%, limit of detection was 0.1051 mg/L, and % recovery for the chicken meat sampel with 3 different samples > 95%. This result showed this method capable to application for the routine analysis of the determination chloramphenicol countent in samples.Keywords: Chloramphenicol, HPLC, Analytical performance, Broiler Meat
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/584
2023-03-26T10:19:15Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/584
2023-03-26T10:19:15Z
JURNAL KIMIA MULAWARMAN
Vol 15 No 1 (2017); 46-52
Isolation Of Antioxidant Compounds Of N-Hexane Extract Of Nutmeg (Myristica Fragrans Houtt) Leaves
Ginting, Binawati; Jurusan Kimia, Fakultas MIPA, Universitas Syiah Kuala, Banda Aceh
Hadijah, Siti; Jurusan Kimia, Fakultas MIPA, Universitas Syiah Kuala, Banda Aceh
Helwati, Hira; Jurusan Kimia, Fakultas MIPA, Universitas Syiah Kuala, Banda Aceh
2017-11-29 00:00:00
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This license requires that reusers give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes. If others remix, adapt, or build upon the material, they must license the modified material under identical terms.
BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/584
The isolation of antioxidant active compounds from n-hexane extract of nutmeg leaves (Myristica fragrans Houtt) with dipphenylpicrylhydrazyl (DPPH) has been carried out. n-Hexane extract of nutmeg leaves (0.35%) was obtained by partitioning of methanol extract (535.7 g) using n-hexane solvent. Isolation of active compound of n-hexane extract with gravitational column chromatography gradient elution of n-hexane : ethyl acetate with ratio (9 : 1) – (7 : 3) obtained 7 mixed fraction of MFHD1 - MFHD 7. MFHD 2 fraction further isolated obtained MFHD 2.1. The nutmeg n-hexane extracts and their fractions showed strong antioxidant activity with IC50 values <100 ppm except MFHD 6 fraction showed for IC50 values of 114.95 ppm. The most potent antioxidant activity in MFHD 4 fraction with IC50 value of 0.729 ppm (compared with vitamin C value of IC50 7,875 ppm as positive control). The GC-MS analysis of the MFHA 2.1 fraction shows the presence of sitostenone and eucalyptol compounds, both of which have been reported to have been isolated from several different plants and have antioxidant activity.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/14
2017-12-15T04:02:05Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/14
2017-12-15T04:02:05Z
JURNAL KIMIA MULAWARMAN
Vol 12 No 1 (2014)
PEMANFAATAN ABU BATUBARA SEBAGAI ZEOLIT YANG TERDEALUMINASI DALAM MENGADSORPSI FENOL
Pata, Agustinus; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
Sitorus, Saibun; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
Gunawan, Rahmat; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
2014-11-24 00:00:00
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
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BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/14
id
A research on the adsorption of phenol with zeolite adsorbent is formed from coal ash by hydrothermal process with the fusion method. In addition, the improvement in the ability of zeolite adsorbtion on the zeolite dealimination process is done. Phenol adsorption process is done through a batch shaker method with test parameters pH, contact time and adsorption capacity factor. The measurement results for the phenol optimum conditions were at pH 10 with a contact time of 30 minutes with the value of the phenol capacity of zeolite was 1,1853 mg/g were obtained using Langmuir isotherm adsorption equation.Keywords : Zeolite of coal ash, dealumination, adsorption, phenol.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/401
2018-03-16T08:06:46Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/401
2018-03-16T08:06:46Z
JURNAL KIMIA MULAWARMAN
Vol 14 No 2 (2017); 84-90
Studi Docking Molekular Senyawa Asam Sinamat Dan Derivatnya Sebagai Inhibitor Protein 1j4x Pada Sel Kanker Serviks
Ferwadi, Susmi; Jurusan Kimia FMIPA UNMUL
Gunawan, Rahmat; Jurusan Kimia FMIPA UNMUL
Astuti, Winni; Jurusan Kimia FMIPA UNMUL
2017-05-29 20:15:54
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
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BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/401
id
Molecular docking of cinnamate acid compound and its derivatives as protein 1J4X inhibitor to cervical cancer cell has been done. The result showed that the docking energies on mode 1 of inhibitor molecules are -5.7 kcal/mol for cinnamate acid, -6.0 kcal/mol for phenyl cinnamate, -4.7 kcal/mol for methyl cinnamate and -7.5 kcal/mol for 4-phenylchroman-2-on. The inhibitor molecules were interacted with the amino acids of the cervical cancer cell by forming hydrogen bondings. Cinnamate acid formed hydrogen bondings with amino acids of serine 124, glycine 127, tyrosine 128, serine 129 and arginine 130. Phenyl cinnamate formed hydrogen bonding with amino acid of serine 129. Methyl cinnamate formed hydrogen bonding with amino acid of serine 129. 4-phenylchroman-2-on formed hydrogen bondings with amino acids of serine 124, serine 129 and arginine 130. Cinnamate acid is more potential as anticancer drug than phenyl cinnamate, methyl cinnamate and 4-phenylchroman-2-on
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/1126
2023-11-30T16:34:11Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1126
2023-11-30T16:34:11Z
JURNAL KIMIA MULAWARMAN
Vol 20 No 1 (2022); 51-55
Penentuan Vitamin C, pH , Total Bakteri Asam Laktat (BAL) dan Respon Sensoris pada Soyghurt dari Nanas Madu (Ananas comosus L.)
Marwati, Marwati; Fakultas Pertanian Universitas Mulawarman
Putra, Yoga Pratama; Jurusan Teknologi Hasil Pertanian, Fakultas Pertanian, Universitas Mulawarman
Emmawati, Aswita; Jurusan Teknologi Hasil Pertanian, Fakultas Pertanian, Universitas Mulawarman
Banin, Maghfirotin Marta; Jurusan Teknologi Hasil Pertanian, Fakultas Pertanian, Universitas Mulawarman
Prayitno, Yudha Agus; Jurusan Teknologi Hasil Pertanian, Fakultas Pertanian, Universitas Mulawarman
Hamka, Hamka; Teknologi Pengolahan Hasil Perkebunan, Politeknik Negeri Pertanian Samarinda
2022-12-28 00:00:00
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
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This license requires that reusers give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes. If others remix, adapt, or build upon the material, they must license the modified material under identical terms.
BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1126
Soyghurt adalah merupakan salah satu produk fermentasi yang diolah dari susu kedelai dengan menambahkan kultur bakteri Lactobacillus bulgaricus dan Streptococcus thermophilus. Soyghurt dengan penambahan buah nanas madu dapat meningkatkan nilai fungsionalnya, namun perlu formulasi yang tepat agar didapatkan soyghurt nanas madu dengan nilai fungsional dan sensoris terbaik. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) faktor tunggal dengan lima taraf dan diulang tiga kali. Faktor tersebut adalah persentase perbandingan nanas madu dan susu kedelai yaitu (30:70), (40:60), (50:50), (60:40) dan (70:30). Parameter yang diamati adalah kadar vitamin C, pH, total bakteri asam laktat dan sifat sensoris (hedonik dan mutu hedonik). Hasil penelitian menunjuukan bahwa perlakuan nanas madu dan susu (70:30) memiliki kandungan vitamin C 50,75 mg/100 g, pH 4,48, total BAL log 7,57 cfu/g dan disukai oleh panelis pada uji hedonik. Sedangkan pada karakteriktik mutu hedonik pada perlakuan 70:30 memberikan warna kuning, beraroma nanas dan agak beraroma susu kedelai, tekstur kental, dan berasa asam, namun tidak berbeda nyata dengan perlakuan yang lain.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/494
2023-03-26T10:18:49Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/494
2023-03-26T10:18:49Z
JURNAL KIMIA MULAWARMAN
Vol 15 No 1 (2017); 24-28
Pengaruh Suhu Dan Lama Pengeringan Terhadap Sifat Kimia Dan Organoleptik Sale Pisang Kapas (Musa Comiculata)
Marwati, Marwati; Fakultas Pertanian Universitas Mulawarman
Yuliani, Yuliani; Jurusan Teknologi Hasil Pertanian, Fakultas Pertanian, Universitas Mulawarman
Andriyani, Yulian; Jurusan Teknologi Hasil Pertanian, Fakultas Pertanian, Universitas Mulawarman
Mentari, Mentari; Jurusan Teknologi Hasil Pertanian, Fakultas Pertanian, Universitas Mulawarman
2017-12-18 00:00:00
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
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BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/494
en
Banana “kapas” is an original banana cultivar from Samarinda, with the characteristics at the time of mature is yellow fruit skin color, flesh color yellowish white and has a sweet taste. During this time the banana kapas has not been utilized properly. Based on the characteristics possessed by banana kapas can be processed into the processed products sale banana.
This study aims to determine the effect of temperature and drying time on the chemical properties of sale of banana kapas produced, the level of panelist reception at organoleptic test and to get the time and temperature of the dryer that produces a quality banana sale based on chemical properties and organoleptic. The results showed that the temperature and duration of the dryer and its interactions had the significant effect on water content, ash content, vitamin C and reducing sugar content. Treatment with temperature 75oC and 21 hours drying time gave the best result with water content, ash content, vitamin C and reducing sugar are 32.80%, 1.13%, 60.65 mg/g and 16.08% respectively. For hedonic test, hedonic values of color, flavor, aroma and texture is like the hedonic quality of brown, sweet taste, rather banana flavored and hard texture.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/527
2023-12-02T14:31:06Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/527
2023-12-02T14:31:06Z
JURNAL KIMIA MULAWARMAN
Vol 20 No 2 (2023); 56-63
EXTRACTION AND CHARACTERIZATION OF PECTIN FROM LEMON LIME PEEL WASTE (Citrus amblycarpa)
Maulida, Fiqi Estuning Nava; Jurusan Kimia, FMIPA, Universitas Mulawarman
Alimuddin, Alimuddin; Jurusan Kimia, FMIPA, Universitas Mulawarman
Erwin, Erwin; Jurusan Kimia, FMIPA, Universitas Mulawarman
2023-05-23 00:00:00
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
This license requires that reusers give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes. If others remix, adapt, or build upon the material, they must license the modified material under identical terms.
BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/527
id
Research on the extraction and characterization of pectin from lemon lime peel waste (Citrus amblycarpa) has been done. The purpose of this research is to process lime waste into raw material of pecti
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/622
2021-01-27T09:50:23Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/622
2021-01-27T09:50:23Z
JURNAL KIMIA MULAWARMAN
Vol 17 No 2 (2020); 56-60
THE EFFECT OF FREE FATTY ACID CONTENT TO THE CRUDE PALM OIL DENSITY CHANGING
FAHMI, ALIYAH; UNIVERSITAS EFARINA
2020-05-29 00:00:00
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This license requires that reusers give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes. If others remix, adapt, or build upon the material, they must license the modified material under identical terms.
BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/622
Density are a physical parameter of Crude Palm Oil (CPO) quality determination which done by gravimetric method (weighing sample in a picnometer 50 mL, g/mL). Density is affected by the temperature. High temperature in CPO may cause the density become less by a little. But if we get them in lower temperature will make them in solid form and this situation is undesirable in trade industry. High temperature may cause hydrolysis reaction that add free fatty acid (FFA) content. The density changing was made with variation temperature (450C, 500C, 550C, 600C dan 650C) and FFA concentration (2%,3%,4%,5% and 6%). The result in this research was high concentration of FFA will make CPO density decreased with inreasing temperature. The linier relationship happened in same temperature (450C), the CPO density with free fatty acid content were 2%, 3%, 4%, 5% and 6% were ?= 0,8934; 0,8391; 0,8926; 0,8921 and 0,8920), so did the temperature at 500C, 550C, 600C dan 650C
Keywords: Density, CPO, FFA, Temperature
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/4
2023-02-13T13:42:02Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/4
2023-02-13T13:42:02Z
JURNAL KIMIA MULAWARMAN
Vol 12 No 2 (2015); 68-74
DETEKSI DOPAMIN SECARA VOLTAMETRI MENGGUNAKAN ELEKTRODA PASTA KARBON TERMODIFIKASI ETER MAHKOTA (DIBENZO-18-CROWN-6)
Irdawati, Irdawati; Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Udayana
Manurung, Manuntun; Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Udayana
Septiawan, Kadek Adi; Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Udayana
2015-09-22 00:00:00
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
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BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/4
id
The research about the detection of dopamine by voltammetry method using crown ether modified carbon paste electrode has been carried out. The aims of this research are to investigate the influence of pH and the composition of modifier to the sensitivity and limit of detection for dopamine analysis. The measurement was conducted by differential pulse voltammetry method.The optimum of pH and modifier (crown ether) composition in the detection of dopamine are 4,0 and 0.8%, respectively. The linear concentration range is obtained from 10 to 200 µM, linear regression equation y = 4,968 + 0,068x with R2 = 0,9988 and limit of detection 6,865 x 10-6 M. The modified carbon paste electrode has relative standard deviation smaller than Horwitz’s (1,28%<5,66%), therefore this electrode has a good reproducibility. The recovery using crown ether-modified carbon paste electrode is 99,0% showing a good accuration. The measurement of commercial samples contain dopamine HCl (Giulini and Proinfark injection) is 87,0% and 91,5% compared with the composition on the label
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/76
2017-09-02T13:19:23Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/76
2017-09-02T13:19:23Z
JURNAL KIMIA MULAWARMAN
Vol 8 No 1 (2010)
PEMBUATAN LEMAK KAKAO RENDAH KALORI DENGAN MINYAK KELAPA (COCONUT OIL)) MELALUI REAKSI INTERESTERIFIKASI
Hilda, Lelya; STAIN Padangsidimpuan
2016-02-23 10:42:27
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BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/76
id
Cacao fat has long chain fatty acids was high mainly palmitic and stearic can be improved their character by adding of palm oil to obtain cocoa fat was low calories. The addition of coconut oil can be done only up to 20%, which is the ratio (90:10) and (80:20) cocoa fat and coconut oil with solid fat content of 5:53 and 4:58 with a melting point 33.6 ° C and 32.8oC (32oC-35oC melting point cacao fat). The process was be done by interesterification reaction produces cocoa fat that free of trans fatty acids .Keywords: long chain fatty acaid, low calory, solid fat content, melting point
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/1069
2023-12-04T11:28:27Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1069
2023-12-04T11:28:27Z
JURNAL KIMIA MULAWARMAN
Vol 19 No 1 (2021); 39-44
IDENTIFIKASI DEKSAMETASON PADA JAMU PENGGEMUK BADAN YANG DIJUAL DI E-MARKETPLACE SHOPEE MENGGUNAKAN KROMATOGRAFI LAPIS TIPIS
Ningsih, Sri Widia; Jurusan Teknologi Laboratorium Medis Poltekkes Medan
Sirait, Lerny Serena; Jurusan Farmasi, Politeknik Kesehatan Kementerian Kesehatan Medan
Setiyawati, Dewi; Jurusan Teknologi Laboratorium Medis, Politeknik Kesehatan Kementerian Kesehatan Medan
2021-11-30 00:00:00
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This license requires that reusers give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes. If others remix, adapt, or build upon the material, they must license the modified material under identical terms.
BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1069
The regulation of Indonesian Health Ministry number 007 of 2012 about traditional medicines registration explained that traditional medicines are prohibited from containing Drug Chemicals (DC). The aim of the study was to identify the DC of dexamethasone in Agency Fattening Herbs sold in Shopee e-marketplace. Dexamethasone is a corticosteroid drug used as an anti-inflammatory agent. Long-term use can cause a hormonal effect, iatrogenic chusing syndrome. This study was a qualitative descriptive using thin layer chromatography (TLC). The mobile phase used to identify dexamethasone in this study was Ethyl acetate: Toluen: Methanol (45 : 54: 1) and the solvent used was Chloroform: Methanol (9 : 1). Many of the samples tested were 3, namely X, Y and Z. The results of TLC formed purple stain spots on all three samples that were parallel to the comparison on 254 nm UV light. The price of dexamethasone comparison Rf is 0.53. The Rf value of the sample X was 0.34. The Rf value of sample Z is 0.53. The calculation results of Rf value were analyzed by SPSS with a significant value (p ≤ 0.001). The analysis was continued by the Duncan test to show groups that had differences. Of the three samples Agency Fattening Herbs tested two of them (X and Z) containing Dexamethasone whereas one (Y) does not has Dexamethasone.
Keywords: Agency fattening herbs, dexamethasone, e-marketplace, thin layer chromatography
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/665
2023-06-20T02:05:36Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/665
2023-06-20T02:05:36Z
JURNAL KIMIA MULAWARMAN
Vol 16 No 1 (2018); 49-59
SYNTHESIS AND PRELIMINARY EVALUATION OF 3,3’-DIHYDROXY-4,4’-DIMETHOXYDIBENZYLIDENEACETONE AS SUNSCREEN AND ANTIOXIDANT ACTIVE COMPOUND
Harizal, Harizal; Universitas Esa Unggul
Hidayanto, Ariyo Prabowo; Program Studi Bioteknologi, Fakultas Ilmu-ilmu Kesehatan, Universitas Esa Unggul, Jakarta, Indonesia
Sari, Nindya Wulan; Laboratorium Terpadu Fakultas Ilmu-ilmu Kesehatan, Universitas Esa Unggul, Jakarta, Indonesia
2018-11-29 00:00:00
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
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This license requires that reusers give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes. If others remix, adapt, or build upon the material, they must license the modified material under identical terms.
BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/665
Synthesis and preliminary evaluation of 3,3’-dihydroxy-4,4’-dimethoxydibenzylidenacetone (DDB) as sunscreen and antioxidant have been successfully conducted. The compound was prepared throught acid catalyzed condensation reaction between vanillin and aceton using saturated HCl solution in glacial acetic acid. Pre-evaluation of sunscreen active compound candidate was performed by determining electronic absorbance profile, lamdamax, e, lamda c, UVA/UVB ratio, and photostability. While antioxidant activity test was performed using DPPH radical scavenger method. Based on the results obtained, the compound obtained has very good protective effect in UVA regions with high antioxidant activity.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/626
2018-07-24T07:34:18Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/626
2018-07-24T07:34:18Z
JURNAL KIMIA MULAWARMAN
Vol 15 No 2 (2018)
FRONT MATTER
Mulawarman, Jurnal Kimia
2018-05-30 00:00:00
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This license requires that reusers give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes. If others remix, adapt, or build upon the material, they must license the modified material under identical terms.
BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/626
FRONT MATTER include Cover, Indexing and Editorial Boar
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/204
2018-03-19T06:22:13Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/204
2018-03-19T06:22:13Z
JURNAL KIMIA MULAWARMAN
Vol 13 No 2 (2016)
Pembuatan Etanol Dari Biji Cempedak (Artocarpus champeden sp.) Dengan Hidrolisis Menggunakan Enzim Alfa Amilase Dan Glukolase Fermentasi Saccharomyces cerevisiae
Santoso, Wahyu Teguh; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
-, Alimuddin; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
Kartika, Rudi; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
2016-06-14 00:00:00
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url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/204
id
Telah dilakukan penelitian yang bertujuan untuk mengetahui potensi dari biji cempedak (Artocarpus champedan sp.) sebagai bahan baku pembuatan etanol, sekaligus mengetahui apakah variasi penambahan nutrisi ammonium sulfat dan lamanya waktu fermentasi dapat meningkatkan konsentrasi etanol yang dihasilakan. Proses hidrolisis pati dilakukan secara enzimatis melalui tahap liquifikasi dan sakarifikasi dengan menggunakan enzim alfa-amilase dan glukolase yang akan mengkonversi pati menjadi glukosa. Hasil hidrolisis ditambahkan amonium sulfat sebagai sumber nutrisi dengan variasi 0,1 %, 0,3 % dan 0,5 % (b/v) kemudian difermentasi dengan variasi waktu 4, 5 dan 6 hari. Konsentrasi etanol tertinggi berada pada penambahan nutrisi amonium sulfat 0,3 % (b/v) dengan waktu fermentasi 6 hari sebesar 8,233 %.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/38
2017-12-15T04:01:27Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/38
2017-12-15T04:01:27Z
JURNAL KIMIA MULAWARMAN
Vol 13 No 1 (2015)
Potensi Pemanfaatan Ekstrak Kubis Ungu (Brassica oleracea L.) sebagai Indikator Asam Basa Alami
-, Erwin; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
Nur, Muhammad Asfian; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
Panggabean, Aman Sentosa; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
2016-01-19 11:40:18
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
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BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/38
id
The study of potential use of extracts and fractions of purple cabbage (Brassica oleracea L.) as an indicator of acid-base has been conducted. This research aims to determine the color change at a certain pH to extract total, n-hexane, ethyl acetate and methanol fraction. Based on the results of the test changes color only total extracts and methanol fraction that is suitable as indicator. Statistical test that the t test for total titration end point extracts, t calculate is smaller than t table [0.4241 <2.776], it showed no significant difference between the endpoint using the total extract with bromine thymol blue indicator. While the endpoint for methanol fraction having t calculategreater than t table [6.323> 2.776],indicating the end point of the titration using methanol fraction was significantly different compared with bromine thymol blue indicator.Keywords: Brassica oleracea L, indicator, and acid-base
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/247
2017-12-15T04:00:55Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/247
2017-12-15T04:00:55Z
JURNAL KIMIA MULAWARMAN
Vol 14 No 1 (2016)
ANALISIS KANDUNGAN ASAM ASKORBAT DALAM BUAH NAGA MERAH (Hylocereus polyrhizus) DENGAN IODIMETRI
Rahim, Abdul
Alimuddin, Alimuddin
erwin, Erwin
2016-11-08 00:00:00
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url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/247
Kimia FMIPA Unmul
id
ABSTRACT The research to determine “Analysis the Content of Ascorbic Acid in the Red Dragon Fruit by Iodimetri” Vitamin C concentration of postharvest red dragon fruit (Hylocereus Polyrhizus) and at the same time to recognize those the packaging could affected conten of obtained Vitamin C. Analysis process was conducted by iodimetric titration method through the sample of dragon fruit with saving period and packaging varied. The result of completed research find out there was are difference concentration of Vitamin C between packaged dragon fruit and without package, the concentration of Vitamin C in packaged dragon fruit was increase the concentration of Vitamin C from the first day (11,1680 mg/100 gram of sample) to the third day (14,8017 mg/100 gram of sample) and decrease until the fifth day (10,4743 mg/gram of sample), otherwise by another treatment without package the concentration of Vitamin C are increase from the first day (7,4928 mg/100 gram of sample) to the sixth day (19,6784 mg/100 gram of sample) and decreased until the eighth day (14,1395 mg/100 gram of sample). Keywords : Red dragon fruit (Hylocereus Polyrhizus), Vitamin C dan iodimetric titration.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/737
2023-03-26T10:13:40Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/737
2023-03-26T10:13:40Z
JURNAL KIMIA MULAWARMAN
Vol 18 No 2 (2021); 84 - 89
DECREASING OF COD AND TSS FROM LAUNDRY WASTE USES ALUMINUM (Al) AND COPPER (Cu) ELECTRODES IN THE ELECTROCOAGULATION METHOD
Sumawan, Mirna Desyderia; Mulawarman University
2021-05-31 00:00:00
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BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/737
A research about reduction of COD and TSS from laundry waste with Electrocoagulation method using Al and Cu electrodes in COD and TSS reduction parameters has been done. In this research, the voltage and optimum time determited based on occurred in electrocoagulation process. The determination of COD and TSS in the contact time was 60 minutes with the value of COD was 90.5645% and TSS 63.7279%. The value of voltage optimum was 12 Volt, obtain COD was 90.2392% and TSS 60.7052%.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/28
2016-01-18T04:59:39Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/28
2016-01-18T04:59:39Z
JURNAL KIMIA MULAWARMAN
Vol 11 No 2 (2014)
PEMANFAATAN KARBON AKTIF DARI BATUBARA KOTOR (DIRTY COAL) SEBAGAI ADSORBEN ION LOGAM Cd 2+ DAN Pb 2+ DALAM LARUTAN
Payung, Yogie Henry; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
Sitorus, Saibun; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
-, Alimuddin; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
2014-01-18 00:00:00
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
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BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/28
id
The research of activated carbon utilization of dirty coal as an adsorbent ion cadmium (Cd) and plumbum (Pb) has been done. In this research, the variations of solutions pH value (1, 2, 3, 4, 5 and 6), contact time (5, 10, 15, 30, 45, 60, 75 and 90 minutes), and the variation of concentration (20, 40, 60, 80 and 100 mg/L) were applied. The determination of cadmium and plumbum ion concentraction used an Atomic Absorption Specthrometer (AAS). The optimum condition cadmium ion on pH 4, than in the plumbum on pH 5 with optimum time contact is 15 minutes and the maximum adsorptive capacity cadmium ion in value is 2,90 mg/g, than on plumbum ion is 3,08 mg/g.Keywords: Adsorption, Activated Carbon, Dirty Coal, Cadmium, Plumbum, Ion, Solution
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/875
2023-11-30T16:44:24Z
JKM:ART
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http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/875
2023-11-30T16:44:24Z
JURNAL KIMIA MULAWARMAN
Vol 16 No 2 (2019); 83-89
SINTESIS SURFAKTAN DIETANOLAMIDA DARI METIL ESTER MINYAK BIJI BUNGA MATAHARI (Helianthus annuus. L) MELALUI REAKSI AMIDASI
Khsanah, Nur; Jurusan Kimia, FMIPA Universitas Mulawarman
Daniel, Daniel; Jurusan Kimia, FMIPA Universitas Mulawarman
Marliana, Eva; Jurusan Kimia, FMIPA Universitas Mulawarman
2019-05-30 00:00:00
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
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BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/875
Synthesis of dietanolamide surfactant from methyl ester of sunflower seed oil (Helianthus annuus. L) has been carried out through an amidation reaction. The synthesis process includes extraction, esterification and amidation. In the extraction process showed the oil content of sunflower seeds was 32.93% with an acid number of 3.25 mg KOH/g and ALB levels of 1.63%. Sunflower seed oil was then converted to methyl ester through the esterification process and obtained an acid number 1.84 mg KOH/g so that the ALB level dropped to 0.92% and obtained saponification numbers of 61.19 mg KOH/g. The most dominant composition of methyl ester of sunflower seed oil based on GC-MS analysis was methyl oleate at 23.28%. The FT-IR methyl ester spectrum gives a specific absorption peak for group C=O ester at wave number 1743 cm-1. Methyl esters are converted to diethanolamide through an amidation process. The resulting diethanolamide has an acid number of 9.7 mg KOH/g and a saponification number of 3.08 mg KOH/g. The FT-IR spectrum provides specific absorption peaks for groups C=O amides at wave numbers 1622 cm-1 and C-N at wave numbers 1055 cm-1. The value of HLB dietanolamide in practice is 13.6495 and in theory is 14.291 which includes the surfactant in the oil in water (O/W) emulsifying class.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/1106
2023-11-30T16:34:11Z
JKM:ART
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http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1106
2023-11-30T16:34:11Z
JURNAL KIMIA MULAWARMAN
Vol 20 No 1 (2022); 17-22
Analisis Fitokimia Dan Uji Aktivitas Antibakteri Ekstrak Metanol Daun Suji (Pleomle Angusitolia N.E Brown)
Kurnia, Lutfiana Devi; Kimia
Ruga, Ritbey; Jurusan Kimia FMIPA Universitas Mulawarman
Saleh, Chairul; Jurusan Kimia FMIPA Universitas Mulawarman
2022-11-30 00:00:00
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BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1106
Phytochemical and antibacterial activity assay of methanol extract from Suji leaves (Pleomele angustifolia) were carried out. The aims of this study are to determine secondary metabolites and antibacterial activity of the methanol extract against Streptococcus sobrinus KCCM 11898 and Streptococcus mutans ATCC 25175 by using agar well diffusion. The results showed that methanol extract of suji leaves contain phenolic, triterpenoid and steroid constituents. With 2%, the methanol extract displayed antibacterial activity against Streptococcus sobrinus and Streptococcus mutans with diameter inhibition zones of 19.0 and 10.3 mm, respectively.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/59
2017-09-02T13:19:27Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/59
2017-09-02T13:19:27Z
JURNAL KIMIA MULAWARMAN
Vol 9 No 2 (2012)
UJI FITOKIMIA DAN AKTIVITAS ANTIOKSIDAN DARI EKSTRAK ETANOL BIJI KELENGKENG (Euphoria Iongan STEUD) DENGAN METODE PERENDAMAN RADIKAL 2,2-DIPHENIL-1-PICRYLHIDRAZYL (DPPH)
Chatimah, Husnul; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
Saleh, Chairul; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
Marliana, Eva; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
2016-01-26 14:14:04
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BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/59
id
Kelengkeng fruit already well known for Indonesian society. Not only from the contents of the fruit, but Kelengkeng also have many other beneficial from the seed, leather, root and leaves that useful for human health. In this research, phytochemical and antioxidant activity test have been done. Antioxidant activity test was carried out with scavenging test to 2,2-diphenyl-1-picrylhidrazil (DPPH) radical. On antioxidant activity test, mix of extract and DPPH are incubated for 30 minutes at 37oC, then the absorbance measured at λ = 517 nm using spectrophotometer. The absorbance from sample, blank and negative control are converted as Antioxidant Activity Absorbance (AA%). Based on result of phytochemical etanol extract, Kelengkeng contains phenolic compounds. And based on antioxidant activity test with DPPH radical scavenging method by spectrophotometer, ethanol extract of Kelengkeng has antioxidant activity about EC50(72.23±2.55) while Vitamin C as comparison has antioxidant activity about EC50(6.07±0.36).Keywords: Kelengkeng, phytochemical, antioxidant activity and DPPH
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/18
2017-12-15T04:02:05Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/18
2017-12-15T04:02:05Z
JURNAL KIMIA MULAWARMAN
Vol 12 No 1 (2014)
ISOLASI, IDENTIFIKASI DAN UJI TOKSISITAS SENYAWA FLAVONOID FRAKSI KLOROFORM DARI DAUN TERAP (ARTOCARPUS ODORATISSIMUS BLANCO)
Tasmin, Nur; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
-, Erwin; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
Kusuma, Irawan W; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
2015-11-24 17:07:22
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
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This license requires that reusers give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes. If others remix, adapt, or build upon the material, they must license the modified material under identical terms.
BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/18
id
The research about the characterization of flavonoid compound from the leaves of plants applicability chloroform(artocarpus odoratissimus Blanco). Extraction plants done by maceration method and separation of compounds wasperformed using the technique of vakum liquid chromatography and chromatography colomn flash. Separation resultobtained yellowish-white powder. Resul spectrum UV-visible absorption obtained namely the 254.37 to 181.28 areaabsorbance wavelength (nm), while FT-IR analysis result provide absorption at wavenumber there is an alkyl group, ahydroxyl group, an aromatic group and C-O-C stretching based on the data spectrum UV an IR spektrun can beconcluded that the compounds suspected isolated belonged to the Flanva-3-ol. Toxicity was conducted for prawn larvaeArtemia salina Leach. Effect of toxicity from isolate identified with presentage of prawn larva and counted by probitanalysis (LC 50 ). The results of this test showed that the the isolate was very toxic with LC 50 value of 26,8824 ppm. Thetest result obtained mortality of shrimp larvae LC 50 value of each sample is 110.5176 ppm total extract, chloroformfraction 147.7895 ppm, and isolate 80.2568 ppm.Keywords : Terap (Artocarpus odoratissimus Blanco), Isolation, Flavonoid, BSLT
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/473
2018-03-16T08:38:07Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/473
2018-03-16T08:38:07Z
JURNAL KIMIA MULAWARMAN
Vol 14 No 2 (2017); 120-126
Pembuatan Nanokomposit Polivinil Alkohol/Nanoserat Selulosa Yang Diisolasi Dari Tandan Kosong Kelapa Sawit (Elaeis guineensis Jack) Dengan Metode Ledak Uap
Cherlina, Dwi Indria; Universitas sumatera utara
Gea, Saharman; Departemen Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Sumatera Utara
Nainggolan, Hamonangan; Departemen Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Sumatera Utara
2017-05-30 12:00:41
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
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This license requires that reusers give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes. If others remix, adapt, or build upon the material, they must license the modified material under identical terms.
BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/473
The manufacture of nanocomposites polyvinyl alcohol/cellulose nanofiber isolated from empty bunch fruit palm oil has been done. The isolation process was carried out in two stages : α-cellulose from EBFPO which followed by isolation of CN from α-cellulose using steam explosion method. The process of α-cellulose hydrolisis was done using H2C2O4 11%. Nanocomposites PVA/CN were characterized by morphologycal, thermal, and mechanical analysis. FT-IR spectra show C-O-C stretch of cellulose nanofiber at 1059,99 cm-1, which indicated that there are glycoside bonding in coumpound structure. The peaks near 2900,94 cm-1 and 3348,42 cm-1 are representative of the C-H and OH groups. The result of transmission electron microscopy (TEM) image show that diameter of cellulose nanofibre around 44,6 nm. PVA/CN nanocomposites at the optimum ratio of (80:20)% showed the thermal stability around 263,48oC and tensile strength around 17,41 MPa and Young’s Modulus 0,9 GPa, and surface area was smooth and homogen.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/1263
2023-11-30T16:34:31Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1263
2023-11-30T16:34:31Z
JURNAL KIMIA MULAWARMAN
Vol 21 No 1 (2023); 38-54
Active Compounds of Sembung Leaves (Blumea balsamifera DC) in Silico Screening as Antihypertensives
Sjahriza, Ahmad; Program Studi Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Institut Pertanian Bogor, Indonesia
Shellia, Fyrda; Program Studi Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Institut Pertanian Bogor, Indonesia
Iswantini, Dyah; Program Studi Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Institut Pertanian Bogor, Indonesia
2023-11-26 19:26:54
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
This license requires that reusers give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes. If others remix, adapt, or build upon the material, they must license the modified material under identical terms.
BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1263
Hypertension is a structural or functional change in the arteries or the organs it supplies caused by increased blood pressure. Angiotensin-converting enzyme (ACE) can increase blood pressure by converting inactive angiotensin I to active (angiotensin II). Captopril is a hypertension drug that can inhibit ACE activity. Sembung leaf (Blumea balsamifera DC) is a plant that can potentially have antihypertensive activity. This study aims to identify the interaction of active compounds in sembung leaves against ACE as antihypertensive drug candidates through an in silico test based on pharmacodynamic and pharmacokinetic parameters using two docking software, Autodock Vina and PyRx. The results showed that Luteolin was the best test ligand besides having lower ΔG and Ki than control ligands and higher Kd than control ligands. Luteolin was identified to interact with Zn and hydrogen bond interactions at the active site and met the criteria in Lipinski analysis, ADME, and toxicity, so this compound is relatively safe to be used as a drug candidate for the treatment of hypertension.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/43
2017-12-15T04:01:27Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/43
2017-12-15T04:01:27Z
JURNAL KIMIA MULAWARMAN
Vol 13 No 1 (2015)
UJI TOKSISITAS DAN AKTIVITAS ANTIBAKTERI EKSTRAK DAUN MERAH TANAMAN PUCUK MERAH (Syzygium myrtifolium Walp.) TERHADAP BAKTERI Staphylococcus aureus DAN Escherichia coli
Haryati, Nur Aini; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
Saleh, Chairul; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
-, Erwin; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
2016-01-19 12:47:55
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url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/43
id
A research aims to know the toxicity of Pucuk Merah (Syzygium myrtifolium Walp.) red leaves extracts against brine shrimp Artemia salina Leach and its bioactivity against Escherichia coli and Staphylococcus aureus has been carried out. The dried samples were macerated with ethanol and were fractionated with n-hexane, ethyl acetate and ethanol-water. Phytochemical test showed the presence of alkaloids, triterpenoids, steroids, saponins, phenolic and flavonoid in ethanol extract. n-Hexane fraction contained alkaloids, triterpenoids and steroids, ethyl acetate fraction contained alkaloids, triterpenoids, phenolic and flavonoid while ethanol-water fraction contained triterpenoids, saponins and phenolic. Brine Shrimp Lethality Test showed that ethyl acetate fraction had the highest bioactivity in Artemia salina Leach with LC50 values of 149.8600 ppm. Antibacterial activity test using agar diffusion method showed that ethyl acetate fraction had the highest inhibiton against Staphylococcus aureus whereas total extract had the highest inhibition against Escherichia coli with MIC values of 0,5%. These results showed that Syzygium myrtifolium Walp. red leaves extract potential as an antibacterial agent.Keywords: Syzygium myrtifolium Walp., Toxicity, Antibacterial
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/1108
2023-12-02T16:09:36Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1108
2023-12-02T16:09:36Z
JURNAL KIMIA MULAWARMAN
Vol 20 No 2 (2023); 92-97
PREPARATION OF FE-DOPED ZINC OXYSULFIDE (Fe-Zn(O,S)) WITH SURFACE DEFECT FOR HYDROGEN EVOLUTION REACTION
Shuwanto, Hardy; Universitas Prima Indonesia
Lie, Jenni; Widya Mandala Surabaya Catholic University
Abdullah, Hairus; Universitas Prima Indonesia
Pasaribu, Subur P.; Mulawarman University
2023-05-26 00:00:00
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BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1108
In this study, Fe-doped Zn(O,S) has been successfully fabricated by a one-step preparation process using chemical wet method. The Fe-doped Zn(O,S) photocatalysts were studied by varying the content of Fe dopant. The characterizations of Fe-doped Zn(O,S) were carried out by SEM and XRD analyses to determine the morphology and phase of samples. Furthermore, the optical and electrochemical properties were characterized through EIS, TPC, DRS and PL analyses. Briefly, Zn(O,S) with 5% Fe amount exhibited the most optimum condition as compared to other Fe amounts in which it showed better charge separation with the hydrogen evolution amount of 29000 mikromol/g in 10% EtOH solution. Lastly, the proposed mechanism is initially by the trapping of water molecules in the oxygen vacancy (defect) in Fe-Zn(O,S) sample followed by the reduction to generate hydrogen (H2) gas via the intermediate of proton (H+).
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/912
2021-01-27T09:50:23Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/912
2021-01-27T09:50:23Z
JURNAL KIMIA MULAWARMAN
Vol 17 No 2 (2020); 94-97
PENENTUAN KUALITAS AIR SUMUR BOR DI DAERAH MARANGKAYU KABUPATEN KUTAI KARTANEGARA
Anggraini, Yessy Parasamya; Balai Wilayah Sungai Kalimantan III Dirjen SDA Kementerian PUPR Indonesia
Aipassa, Marlon Ivanhoe; Program Studi Magister Ilmu Lingkungan Universitas Mulawarman
Panggabean, Aman S.; Jurusan Kimia FMIPA UNMUL
2020-05-29 00:00:00
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
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url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/912
The research about determination of the quality of drilled water wells in the area of Marangkayu, Kutai Kertanegara district has been conducted. The quality of the wellbore produced can be done by determining the number of several important parameters of the wellbore’s groundwater quality of groundwater wells produced by the Director General of SDA Ministry of PUPR and community groundwater wells in the coastal area of Marangkayu, whether it meets the requirements of the Republic of Indonesia Minister of Health Regulation No. 32/2017 concerning Environmental Health Standard Quality Standards and Water Health Requirements for Sanitation Hygiene. The results of the research showed that the government drilled water and community well drilled water met the quality standards in accordance with the Republic of Indonesia Ministerial Regulation No. 32/2017, except for E. Coli and Total Coliform contents are quite high, exceeding the quality standards of water sample inspection results.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/9
2023-02-13T13:42:02Z
JKM:ART
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http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/9
2023-02-13T13:42:02Z
JURNAL KIMIA MULAWARMAN
Vol 12 No 2 (2015)
PENGARUH VARIASI WAKTU FERMENTASI TERHADAP KADAR LAKTOSA, LEMAK, pH DAN KEASAMAN PADA SUSU SAPI YANG DIFERMENTASI MENJADI YOGURT
Agustina, Yeni; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
Kartika, Rudi; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
Panggabean, Aman S; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
2015-05-22 00:00:00
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SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/9
id
Yogurt is a fermentation milk product with bacteria Streptococcus thermophillus and Lactobacillus bulgariccus which has been commonly used in the process of making yogurt. The purpose of this study was to determine the effect of fermentation on the levels of lactose, fat, pH, acidity in yogurt. Determination of lactose in volumetric according Gohr, fat content carried by the Gerber method, using a pH meter pH and acidity values using titration.Keywords : lactose, fat, pH, acidity, fermentation, yogurt.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/81
2017-09-02T13:19:17Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/81
2017-09-02T13:19:17Z
JURNAL KIMIA MULAWARMAN
Vol 8 No 1 (2010)
ISOLASI SENYAWA ALKALOID DARI DAUN SIDAGURI (Sida rhombifolia L.)
Lenny, Sovia; Departemen Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Sumatera Utara Medan
Barus, Tonel; Departemen Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Sumatera Utara Medan
S, Evi Yoana; Departemen Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Sumatera Utara Medan
2016-02-24 09:50:18
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url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/81
id
The secondary metabolite compound was isolated from sidaguri (Sida rhombifolia L.) leaves. The diethylether extract was subjected to a column chromatography with a mixture of chloroform:methanol (7:3) was obtained as amorf (59 mg). The FT-IR and 1H-NMR spectrum indicated the isolated compound was alkaloid compound.Keywords : Sidaguri (Sida rhombifolia L.), column chromatography, alkaloid
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/1015
2023-11-30T16:34:11Z
JKM:ART
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http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1015
2023-11-30T16:34:11Z
JURNAL KIMIA MULAWARMAN
Vol 20 No 1 (2022); 1 - 8
Potensi Bakteri Endofit Daun Pucuk Merah (Syzygium Myrtifolium Walp.) Sebagai Antibakteri Terhadap Propionibacterium Acnes
Alhayyu, Wihda Nisa; Jurusan Kimia FMIPA Universitas Mulawarman
Astuti, Winni; Jurusan Kimia FMIPA UNMUL
Marliana, Eva; Jurusan Kimia FMIPA UNMUL
2022-12-28 00:00:00
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
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BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1015
en
Salah satu penyebab timbulnya jerawat yaitu adanya infeksi bakteri Propionibacterium acnes. Infeksi bakteri penyabab jerawat dapat diatasi menggunakan antibakteri. Pemanfaatan bakteri endofit adalah cara lain untuk mendapatkan metabolit sekunder selain menggunakan ekstrak tanaman. Bakteri endofit adalah bakteri yang hidup di dalam jaringan tanaman dan menghasilkan senyawa bioaktif yang sama dengan tanaman inangnya. Penelitian ini bertujuan untuk mengisolasi bakteri endofit daun hijau dari tanaman pucuk merah dan memanfaatkan senyawa metabolit sekundernya sebagai antibakteri. Pada penelitian ini dilakukan uji aktivitas antibakteri menggunakan metode difusi sumuran terhadap bakteri Propionibacterium acnes KCCM 41747. Hasil penelitian diperoleh sebanyak 30 isolat bakteri endofit hasil isolasi berpotensi sebagai antibakteri terhadap Propionibacterium acnes. Aktivitas antibakteri tertinggi terdapat pada kode koloni P27 dengan diameter zona bening sebesar 23,17 mm. Berdasarkan hasil uji aktivitas antibakteri dapat disimpulkan bahwa bakteri endofit daun hijau dari tanaman pucuk merah berpotensi sebagai antibakteri terhadap bakteri Propionibacterium acnes KCCM 41747.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/905
2020-02-16T16:11:48Z
JKM:ART
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http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/905
2020-02-16T16:11:48Z
JURNAL KIMIA MULAWARMAN
Vol 17 No 1 (2019); 37-44
MODIFIKASI KARET ALAM SIKLIS DENGAN KOMONOMER MALEAT ANHIDRAT DAN ASAM OLEAT MELALUI METODE PENCANGKOKKAN DENGAN TEKNIK REFLUKS MENGGUNAKAN INISIATOR BENZOIL PEROKSIDA
Ritonga, Ahmad Hafizullah; Universitas Sari Mutiara Indonesia, Medan
Aritonang, Barito; Universitas Sari Mutiara Indonesia, Medan
Siahaan, Maniur Arianto; Universitas Sari Mutiara Indonesia, Medan
2019-11-29 00:00:00
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This license requires that reusers give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes. If others remix, adapt, or build upon the material, they must license the modified material under identical terms.
BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/905
Penelitian mengenai modifikasi Karet Alam Siklis (KAS) dengan komonomer maleat anhidrat (MA) dan karet alam siklis (KAS) dengan komonomer asam oleat (AO) melalui metode grafting dengan teknik refluks menggunakan inisiator Benzoil Peroksida (BPO) telah dilakukan, yang bertujuan untuk mengetahui komonomer yang paling baik antara maleat amhidrat (MA) dengan asam oleat (AO) dalam memodifikasi KAS menggunakan inisiator BPO membentuk material baru yaitu KAS-g-MA dan KAS-g-AO, yang hasilnya dilakukan pengujian persentase derajat grafting dan dianalisis menggunakan spektroskopi FTIR. Modifikasi ini dilakukan dengan cara melarutkan sejumlah KAS dengan xylena pada suhu 45-55oC, kemudian dicampurkan larutan KAS tersebut dengan MA atau AO, yang dilanjutkan dengan penambahan inisiator BPO, sambil tetap diaduk selama satu jam, dicuci dengan etanol dan aseton, didiamkan dalam desikator, dan hasil yang diperoleh diketahui bahwa pada nilai dearajat grafting KAS-g-MA sebesar 1,49% sedangkan pada KAS-g-AO sebesar 3,34%. Hasil analisis dengan FTIR, untuk MA dan AO keduanya menunjukkan bahwa ada pemunculan serapan tajam pada bilangan gelombang 1711,23 cm-1 (MA) dan 1709,88 cm-1 (AO) yang mengindikasikan adanya gugus karbonil C=O, hal ini berarti kedua komonomer tersebut benar telah tercangkok pada KAS.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/898
2023-12-04T11:25:36Z
JKM:ART
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http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/898
2023-12-04T11:25:36Z
JURNAL KIMIA MULAWARMAN
Vol 19 No 1 (2021); 8-16
VALIDATION METHOD OF DETERMINATION OF Cd (II) IN NPK FERTILIZER BY FLAME ATOMIC ABSORPTION SPECTROPHOTOMETRY AT THE QUALITY CONTROL LABORATORY, PT. PUPUK KALIMANTAN TIMUR
Hayon, Leonardus Lewo; FMIPA Kimia Universitas Mulawarman
Alimuddin, Alimuddin; Jurusan Kimia FMIPA Universitas Mulawarman
Panggabean, Aman Sentosa; Jurusan Kimia FMIPA Universitas Mulawarman
2021-11-30 00:00:00
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
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This license requires that reusers give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes. If others remix, adapt, or build upon the material, they must license the modified material under identical terms.
BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/898
The research about validation method of determination of Cd (II) in NPK fertilizer by Flame Atomic Absorption Spectrophotometry at the Quality Control Laboratory, PT. Pupuk Kaltim has been done. Determination of Cd (II) was done by referring to the Indonesian National Standard (SNI) 2803:2012. Based on the research results obtained by the correlation coefficient (r) was 0.9991; reproducibility with a relative standard deviation (RSD) value was 4.502 % less than 2/3 CV Horwitz was 9.757 and repeatability with a relative standard deviation (RSD) value was 5.225% less than 2/3 CV Horwitz was 9.695; % recovery was in the range of 80-110 % with an average was 98.56 %; limit of detection was 0.056 mg/kg and limit of quantitation was 0,066 mg/kg; uncertainty estimation of measurement with uncertainty components of concentration, volume, mass, precision and purity of the standard solution, obtained the expanded uncertainty value with a 95 % confidence level was ± 0.197 mg/kg and uncertainty percentage value was 10.43 %.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/668
2023-06-20T02:04:32Z
JKM:ART
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http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/668
2023-06-20T02:04:32Z
JURNAL KIMIA MULAWARMAN
Vol 16 No 1 (2018); 16-21
CHITOSAN-BASE COAGULANTS IN COAGULATION-FLOCCULATION OF KAOLIN SUSPENSION
Piluharto, Bambang; University of Jember
Nurhayati, Mufrihah; Jurusan Kimia, Fakultas MIPA, Universitas Jember
Asnawati, Asnawati; Jurusan Kimia, Fakultas MIPA, Universitas Jember
2019-01-27 23:01:27
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
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This license requires that reusers give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes. If others remix, adapt, or build upon the material, they must license the modified material under identical terms.
BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/668
Coagulation-flocculation is one of the waste water treatments using coagulant/flocculants agent. Using coagulant/flocculants based on natural polymers were many used due to many available, renewable source, and environment friendly. One of that coagulant/flocculants was chitosan that can be produced through deacetylation of chitin. Amino groups in the chitosan structure play important role in the coagulant/flocculants process. The aim of research is using chitosan-based coagulants in the coagulation-flocculation of kaolin suspension. In here, there were two coagulants type, first, single coagulant which chitosan with different molecular weight added alone in kaolin suspension. Second, mix coagulants which chitosan aid with alum in kaolin suspension. As the result, functional group analysis showed that chitosan with different molecular weight have the same functional groups. Increasing molecular weight of chitosan increase NH2 groups and degree of deacetylation. The removing turbidity of kaolin suspension showed that increasing molecular weight chitosan increase removing turbidity of kaolin suspension. Using double coagulant (chitosan and tawas) have the removing turbidity greater than single coagulant.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/609
2023-06-20T02:08:08Z
JKM:ART
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http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/609
2023-06-20T02:08:08Z
JURNAL KIMIA MULAWARMAN
Vol 15 No 2 (2018); 94-98
SINTESIS SURFAKTAN TURUNAN AMIDA YANG DIPEROLEH DARI REKASI METIL RISINOLEAT DAN ETILENDIAMINA
Tarigan, Daniel; Jurusan Kimia FMIPA UNMUL
Agustina, Magdaleni Rahayu; Laboratorium Fisiologi Fakultas Kedokteran Universitas Mulawarman
Kosenarpadi, Soerja; Jurusan Kimia FMIPA Universitas Mulawarman Samarinda
2018-05-30 00:00:00
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BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/609
Interesterification of castor oil with methanol using base catalyst gave mixture of fatty acid methyl esther (FAME) castor oil. Methyl risinoleate as major composition of methyl esther castor oil was subjected to column chromatography using petroleum ether:diethyl ether (19:1, v/v) as eluent, to give yield 73%. Amidation of methyl risinoleate with ethylendiamine under refluks condition using benzene as solvent for ± 12 hours and catalyst NaOCH3, gave 1,3–Dirisinoleil-Etilendiamida compound and 59% yield. The reactioned product 1,3–Dirisinoleil-Etilendiamida has been confirmed its structure using FT-IR spectroscopy, and Hidrofile Lipofile Balance (HLB) value was determined by titration method 12,56
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/200
2017-09-02T13:21:27Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/200
2017-09-02T13:21:27Z
JURNAL KIMIA MULAWARMAN
Vol 13 No 2 (2016)
Pengaruh Pemberian Ekstrak Etanol Daun Kecapi (Sandoricum koetjape (Burm.f.) Merr.) Terhadap Penurunan Kadar Kolesterol Total pada Mencit Jantan (Mus musculus)
Kartika, Rudi; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
2016-06-14 09:59:36
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
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This license requires that reusers give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes. If others remix, adapt, or build upon the material, they must license the modified material under identical terms.
BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/200
id
The research about utilization of ethanol extract form leafkecapi (Sandoricum koetjape (Burm.f.)Merr.)has been done, it proved could decrease total cholesterol levels in male mice (Mus musculus). In this research sample macerated with ethanol 96% and then concentrated by rotary evaporator, and gained 15.6% of yield. Based on the results of phytochemical test, secondary metabolites compound that contained in bark kecapi are alkaloid, flavonoid, triterpenoid, steroid, phenolic and saponin. On antihiperkolesterolemia activity test by using male mice, there are several treatments that negative control (-), positive control (+) and three treatment with different doses i.e. a low doses (9.5 mg/kg BB), middle doses (19 mg/kg BB) and high doses (38 mg/kg BB). The parameter measured was blood serum of male mice by using a Cholesterol Test Strips. From this test it showed that the effectiveness of decreased total cholesterol level doses of 19 mg/kg BB showed total cholesterol level under 100 mg/dL. Keywords: Leaf kecapi (Sandoricum koetjape (Burm.f.) Merr.), Phytochemicals test, Total cholesterol levels, Cholesterol test strips.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/34
2016-01-19T02:36:39Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/34
2016-01-19T02:36:39Z
JURNAL KIMIA MULAWARMAN
Vol 10 No 2 (2013)
PEMANFAATAN TUMBUHAN SERAI WANGI (Cymbopogon nardus (L.) RENDLE) SEBAGAI ANTIOKSIDAN ALAMI
G, Willem Hendrik; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
-, Erwin; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
Panggabean, Aman Sentosa; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
2016-01-19 10:35:41
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
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BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/34
id
The phytochemical test, brine shrimp lethality test and antioxidant activity test on secondary metabolits of serai wangi (Cympogon nardus (L.) Rendle) stalk have been completed. Samples are extracted by masseration method that is concentrated by using rotary evaporator. The methanol hard extract are then fractioned with n-hexan and etil n-hexane and ethyl acetate. Based on secondary metabolits phytochemical test of serai wangi (Cympogon nardus (L.) Rendle) stalk showed that methanol raw ekstract contains flavonoid, fenol and triterpenoid. n-hexane fraction extract contain steroid and ethyl Acetat fraction extract contains flavonoid, fenol and terpenoid. In brine shrimp lethality test, the increase larvae death data was recorded and processed using SAS Probit Analysis to determine the Lethal Concentration 50% (LC50) value. The results of this test showed that the most active fraction is n-hexane fraction with LC50 value of 86,9704 ppm. Based on the antioxidant activity by scavenging activity of DPPH used spectrophotometry was obtained that Inhibition Concentration 50% (IC50) of methanol extract is 67,18 ppm, extract of n-hexane fraction is 1.078,41 ppm, extract of ethyl acetat fraction is 68,96 ppm and vitamin C is 3,05 ppm.Keyword: Cympogon nardus (L.) Rendle, Phytochemical Test, Antioxidant Activity Test, DPPH.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/884
2023-11-30T16:35:42Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/884
2023-11-30T16:35:42Z
JURNAL KIMIA MULAWARMAN
Vol 18 No 1 (2020); 22-29
UTILIZATION OF COFFEE GROUNDS AS ACTIVATED CARBON FOR RHODAMINE B ADSORBENT
Anggriani, Evifania Juvita; Kimia
2020-11-27 00:00:00
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
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BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/884
Research on the use of coffee grounds activated carbon as an adsorbent to reduce the content of Rhodamine B dye has been carried out. The activated carbon used is chemically activated by immersion using 1 M H3PO4 solution for 24 hours then burned at 500ËšC for 45 minutes, while physically activated it is carried out by burning at 500ËšC for 45 minutes. The results of the study which showed the characteristics published in SNI 06-3730-1995, the optimum conditions of Rhodamine B adsorption on both activated carbon at pH 7 and contact time at 15 minutes. Rhodamine B adsorption isotherms on chemically and physically activated carbon using Langmuir adsorption isotherm models with adsorption capacities are 1.6943 mg/g and 1.5936 mg/g, respectively. Chemical and physics activated coffee grounds activated carbon were applied to reduce Rhodamine B from sarung waste in Samarinda. Decrease of Rhodamine B levels in 25 mL of waste samples containing Rhodamine B 14.1860 mg/g with 1 gram of adsorbent were 89.1125% and 60.7923%, respectively.
Keywords: Activated carbon, Spent coffee grounds, Rhodamine B, Adsorption
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/621
2023-06-20T02:04:19Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/621
2023-06-20T02:04:19Z
JURNAL KIMIA MULAWARMAN
Vol 16 No 1 (2018); 1-9
UTILIZATION OF CORN FLOW AMERICA (Zea Mays) AS A SOURCE OF SILICA ON THE MAKING OF Na / SBA-15 CATALYSTES FOR TRANSESTERIFICATION REACTION OF OIL JELANTAH
Utomo, Drajat Bangun; Kimia FMIPA
Subagyono, R R Dirgarini Julia Nurlianti; Jurusan Kimia FMIPA Universitas Mulawarman
GUnawan, Rahmat; Jurusan Kimia FMIPA Universitas Mulawarman
2019-01-25 14:12:37
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
This license requires that reusers give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes. If others remix, adapt, or build upon the material, they must license the modified material under identical terms.
BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/621
Preparation of Na / SBA-15 from corn leaves ash (Zea mays) as a substitute for TEOS (Tetraethyl Orthosilicate) applied as a heterogeneous catalyst in the transesterification reaction of used palm oil and methanol has been performed. The preparation of SBA-15 was conducted by surfactant template method and modification with Na was conducted by impregnation method. SBA-15 from corn leaves ash has a pore size ranging from 4.9 nm to 9.3 nm, a surface area of 595 m2/ g, a pore diameter of 3.95 nm and a pore volume of 0.99 cm3/ g. The yeild obtained from the first transesterification process was 96.46% with the free fatty acid content of the product 0.16 mg KOH/ g. The two most prominent methyl ester based on the chromatogram of the transesterification product, the two most prominent methyl ester in the product were methyl palmitate (36,32%) and methyl oleat (36,15%).
Keywords : Maize, SBA-15, TEOS (Tetraethyl Orthosilicate), Transesterification of used palm oil
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/64
2017-09-02T13:19:24Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/64
2017-09-02T13:19:24Z
JURNAL KIMIA MULAWARMAN
Vol 10 No 2 (2013)
UJI TOKSISITAS DAN AKTIVITAS ANTIBAKTERI BERBAGAI FRAKSI EKSTRAK DAUN TANAMAN KAMBOJA (Plumeria acuminate Ait.)
Pasaribu, Subur P; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
Nuriah, Wahidatul; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
-, Erwin; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
2016-01-27 11:06:30
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
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This license requires that reusers give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes. If others remix, adapt, or build upon the material, they must license the modified material under identical terms.
BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/64
id
Research about phytochemical, brine shrimp lethality and antibacterial activity tests in each fraction from kamboja leaves (Plumeria acuminate Ait.) from Loa Janan, East Kalimantan has been carried out. Plumeria acuminate Ait. leaves was extracted with ethanol and then concentrated by using rotary evaporator. The total extract was fractioned with n-hexane, and ethyl acetate. Based on the secondary metabolites phytochemical test of the Plumeria acuminate Ait. leaves show that total extract is contain alkaloid, steroid, and phenolic. n-hexane fraction is contain steroid. Ethyl acetate fraction is contain steroid. Ethanol-water fraction is contain alkaloid and phenolic. Brine shrimp lethality test exhibit mortality rate of Artemia salina (L) by Probit SAS analysis to determine lethal concentration 50% (LC 50 ) value. The test show that the most active was ethyl acetate fraction with LC 50 value of 44.7968 ppm. Antibacteria activity test of extracts for Staphylococcus aureus bacteria (positive Gram) and Escherichia coli (negative Gram) was carried out by paper disc method. The test showed that the most active were ethyl acetate fraction with minimum inhibitor consentration of 1.563% which clear zone diameter was 5.3 mm on Staphylococcus aureus bacteria and 6.3 mm on Escherichia coli bacteria.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/24
2016-01-13T18:04:29Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/24
2016-01-13T18:04:29Z
JURNAL KIMIA MULAWARMAN
Vol 11 No 2 (2014)
MENINGKATKAN KUALITAS REPEATABILITY DAN REPRODUCIBILITY SAMPEL LIQUID GAS DE-ETHANIZER DI PT. BADAK DENGAN MEMODIFIKASI ALAT PREPARASI PADA KROMATOGRAFI GAS
-, Ardiansyah; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
Saleh, Chairul; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
Gunawan, Rahmat; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
2016-01-14 00:00:00
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
This license requires that reusers give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes. If others remix, adapt, or build upon the material, they must license the modified material under identical terms.
BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/24
id
Modification has been done to the gas chromatograph by adding a de-ethanizer preparation tool that serves as the evaporation of liquid samples de-ethanizer gas from the LNG (Liquid Natural Gas) plant PT. Badak NGL Bontang, East Kalimantan. With the aim to obtain stable analysis results as required. From the results obtained for the repeatability value 0.104% methane component, 0.036% ethane component and 0.154% propane components and reproducibility values obtained for the methane component of 0.025%, 0.036% component ethane, and propane components 0.014%. Data analysis of the samples obtained test results are still below thelimit allowed by the method of GPA 2261-64 which found samples with good homogeneity so that the analysis becomes stable and the true value can be resposibility and laboratory as a Quality Control can keep reliability for LNG Plant.
Keywords: liquid natural gas, de-ethanizer, gas chromatography, repeatability, reproducibility, GPA2261-64
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/846
2020-02-16T16:11:48Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/846
2020-02-16T16:11:48Z
JURNAL KIMIA MULAWARMAN
Vol 17 No 1 (2019); 1-5
Perhitungan komputasi potensi Lawsone dan turunannya sebagai material aktif pada sel surya tersensitisasi zat warna
Maahury, Mirella Fonda; Kimia, FMIPA, Universitas Pattimura
Martoprawiro, Muhamad Abdulkadir; Jurusan kimia FMIPA Institut Telnologi Bandung
2019-11-29 00:00:00
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
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BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/846
en
Lawsone is a dye which found in henna plant. Computational calculations have been done for the lawsone and its derivatives. This computational calculation aims to obtain a stable optimized structure and electronic properties to predict potency of lawsone as a photosensitizer in dye sensitizer solar cell. Computational calculation were using DFT for geometry optimization ground state and TDDFT for single point calculation excitation state. Both state for calculation using B3LYP functional and 6-311G(d,p) as basis set. The calculation in gas phase. Geometry optimization obtain lawsone structure is planar. The present of functional methoxy and hydroxy causing decresing and increasing of bond length. Based on electronic properties, such as excitation energy, maximum absorption wavelength and percentage excitation, L0 has better potential as active material in dye sensitized solar cell.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/901
2023-11-30T16:35:42Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/901
2023-11-30T16:35:42Z
JURNAL KIMIA MULAWARMAN
Vol 19 No 2 (2022); 76-80
Acute Toxicity Test Of P-Metoxicynamic Acid Synthetic From Ethyl P-Methysicynamate
Nurmala, Sara; Universitas Pakuan
Zahara, Indah; Program Studi Farmasi Stikes Prima Indonesia Bekasi 17610
2022-05-30 00:00:00
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
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This license requires that reusers give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes. If others remix, adapt, or build upon the material, they must license the modified material under identical terms.
BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/901
Kencur (Kaempferia galanga L.) is a plant that grows in Indonesia and is often used as a traditional spice. The main content of Kencur is ethyl p-methoxycinamic has a mild level of toxicity. Hydrolysis results from Ethyl p-methoxycinamic namely p-methoxycinamic acid have been widely studied as having antibacterial activity against S. aureus with MIC of 125 ppm. P-methoxycinamic acid has anti-inflammatory activity, topical anti-inflammatory power of 8.7% p-methoxycinamic acid based on molar equality with 1% Na-diclofenac. Cinnamic acid compounds have greater potential as an inhibitor of cervical cancer cells compared to methyl cinnamon because they have more hydrogen bonds. Hydrolysis of ethyl p-methoxycinamic to p-methoxycinamic acid has been carried out, then identification tests have been carried out covering the melting distance obtained values ​​of 172–173ºC. The results of TLC analysis with the mobile phase of methanol: acetone (2: 1) p-methoxycinamic acid compound gave an Rf value of: 0.67. The results of infrared spectrum analysis of hydrolysis compounds provide information on the presence of specific functional groups, namely carbonyl groups of acids (C = O) which are shown by the absorption band at wave number 1690.49 cm-1. Hydrogen bonding in carboxylic acid dimers weakens the C = O bond, resulting in absorption at lower wave numbers. In this spectrum CO groups of acids are shown at absorption of 1029.92 cm-1, aromatic C = C groups are shown by uptake at wave numbers 1602.74 cm-1 and 1627.81 cm-1, while bands at wave number 828.37 cm-1 indicates the presence of para-substituted aromatic nuclei. Acute toxicity test of p-methoxycinamic acid compound which was carried out in a span of 24 hours showed that p-methoxycinamic acid had a moderate level of toxicity.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/251
2017-12-15T04:00:55Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/251
2017-12-15T04:00:55Z
JURNAL KIMIA MULAWARMAN
Vol 14 No 1 (2016)
OPTIMASI SUHU REAKSI TRANSESTERIFIKASI PADA MINYAK JERAMI PADI (ORYZA SATIVA L.) MENJADI BIODIESEL DENGAN MENGGUNAKAN KATALIS CAO DARI KULIT TELUR AYAM)
Sinta, Tasik; Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
Tarigan, Daniel; Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
Saleh, Chairul; Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2016-11-08 00:00:00
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
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This license requires that reusers give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes. If others remix, adapt, or build upon the material, they must license the modified material under identical terms.
BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/251
id
The research on optimization of transesterification temperature for production of biodiesel from rice straw oil (Oryza sativa L.) using CaO catalyst derived from the chicken egg skin has been conducted. Production of biodiesel was conducted at varied temperatures, namely 30oC, 40oC, 50oC, 60oC and 70oC. The fatty acid compositions of the transesterification products were determined by using GC-MS and the physical and chemical characteristics were determined using SNI Methods 04-7182-2006. The AAS result suggested that the chicken egg skin contained 91.41% CaO. The optimum transesterification temperature was 60oC producing 90,8405% methyl ester. The results of GC-MS showed that the highest percentage of fatty acid was methyl oleic (44.56%).
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/55
2017-09-02T13:19:32Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/55
2017-09-02T13:19:32Z
JURNAL KIMIA MULAWARMAN
Vol 9 No 2 (2012)
VALIDASI METODE ANALISIS KADAR TIMBAL (Pb) DALAM MADU ALAM DI KALIMANTAN TIMUR
Aprianto, Finqo; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
Yusuf, Bohari; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
Gunawan, Rahmat; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
2016-01-26 13:42:46
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
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This license requires that reusers give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes. If others remix, adapt, or build upon the material, they must license the modified material under identical terms.
BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/55
id
Analysis method for determining Pb content in natural honey have been developed and validated. Research was done by analyzing one natural honey sample collected from Teritip (Balikpapan) with standard analysis method and three developed analysis method which their analytical performance tested later. Pb content was determined with atomic absorption spectrometry after dry digestion (method A) or wet digestion (method B (HNO3-H2O2; 3:8), C (HNO3-H2O2; 2:1) and D (HNO3)). Analytical performance parameter e. G. Linearity, working range, limit of detection, limit of quantitation, precision and accuracy were tested. Content of Pb in natural honey sample which analyzed with method A, B, C and D were found at 0.7923 ± 0.0311 µg/g, 0.7944 ± 0.0216 µg/g, 0.7998 ± 0.0218 µg/g and 0.7912 ± 0.0160 µg/g respectively. Analytical performance of four tested analytical method were still acceptable. Significance testing result showed that there were no significant differences in precision and accuracy between developed analysis method and standard analysis method, execpt for method D. Precision of method D was significantly better than standard analysis method.Keywords: Honey, Lead, Method Validation
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/524
2023-03-26T10:19:26Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/524
2023-03-26T10:19:26Z
JURNAL KIMIA MULAWARMAN
Vol 15 No 1 (2017); 60-65
Sintesis Silika Mesopori Sba-15 Dari Abu Daun Jagung (Zea Mays L)
Nasri, Nasri; Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
Subagyono, R R Dirgarini J. N; Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
Gunawan, Rahmat
2017-11-29 00:00:00
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
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This license requires that reusers give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes. If others remix, adapt, or build upon the material, they must license the modified material under identical terms.
BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/524
The synthesis and characterization of mesoporous silica Santa Barbara Acid-15 (SBA-15) from the ash of corn have been done. SBA-15 was synthesised using the surfactant template method. SBA-15 from corn leaves ash has a surface area of 592 m2 / gram, pore volume of 0.99 cm3 / gram and pore diameter of 3.95 nm with pore size ranging from 4.9 nm - 7.1 nm. The SAXS pattern of the bio-SBA-15 showed three typical peaks of SBA-15 with miller indices [100], [110] and [200]. In the FTIR spectrum of SBA-15, peaks from Si-O-Si, Si-OH and H-O-H from water were observed.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/15
2017-12-15T04:02:05Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/15
2017-12-15T04:02:05Z
JURNAL KIMIA MULAWARMAN
Vol 12 No 1 (2014)
ADSORPSI LOGAM KADMIUM (Cd) OLEH ARANG AKTIF DARI TEMPURUNG AREN (Arenga pinnata) DENGAN AKTIVATOR HCl
Lestari, Indri Ayu; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
-, Alimuddin; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
Yusuf, Bohari; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
2014-11-24 00:00:00
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
This license requires that reusers give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes. If others remix, adapt, or build upon the material, they must license the modified material under identical terms.
BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/15
id
The adsorption of cadmium (Cd2+) by palm shell carbon (Arenga pinnata) activated carbon have been researched. This research is aim to find the effects of pH value, contact time and concentration. In this research, the variations of pH value was (2 – 7), contact time (5 – 70 minutes) and concentration (1,5 – 3,5 mg/L) were applied. The determination of cadmium concentration used an Atomic Absorption Spectrophotometer (AAS). The result of this research shows that pal shell activated carbon could adsorp metal ion Cd 2+ . The optimum condition was achieved at the pH 3 with a capacity factor of adsorbent was 2,372 mg/L or 94,92%, contact time was 30 minutes with a capacity factor of adsorbent was 2,327 mg/L or 93,12% and concentration was achieved at the concentration 3,5 mg/L with a capacity factor of adsorbent was 3,321 mg/L or 94,91%.Keywords: adsorption, actived carbon, palm shell, metal ions Cd 2+
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/406
2018-03-16T08:25:18Z
JKM:ART
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http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/406
2018-03-16T08:25:18Z
JURNAL KIMIA MULAWARMAN
Vol 14 No 2 (2017); 91-99
Penentuan Kadar Asam Amino Esensial (Metionin, Leusin, Isoleusin Dan Lisin) Pada Telur Penyu Dan Telur Bebek
ginting, agita rachmala; Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
sitorus, saibun; Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
astuti, winni; Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2017-05-29 20:19:06
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BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/406
id
Determination of amino acids essential’s content (methionine, leucine, isoleucine and lysine) on turtle eggs and duck eggs. Turtle eggs and duck eggs are a high animal protein source and easy to obtain. This research has been carried out by categorizing of turtle eggs and duck eggs by size and continued analysis of water content by Methods of Gravimetry, analyzes protein content total by the method of Kjeldahl and analysis of the levels of essential amino acids with method of HPLC (High Performance Liquid Chromatography). In this study, the researcher found the water content in the mix (large, medium and small) 75.2889% and turtle eggs on the mix 67.9020% duck egg. Total protein content in the mix turtle eggs 8.9268% and the mix duck eggs 14.2455%. Levels of essential amino acids in the mixture turtle eggs undetectable methionine, 3.25% leucine, isoleucine and lysine 1.53% 2.50%. In the mix duck eggs undetectable methionine, 1.30% leucine, isoleucine and lysine 0.58% to 0.38%.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/1127
2023-11-30T15:52:31Z
JKM:ART
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http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1127
2023-11-30T15:52:31Z
JURNAL KIMIA MULAWARMAN
Vol 20 No 1 (2022); 47-50
Antifeedaant Compound From Daruju Leaves (Acanthus Ilicifolius Linn) Against Eggplant Leaves Beetle (Epilachna Sparsa)
Mariadi, Ade; Program Studi S2 Kimia, Fakultas MIPA, Universitas Tanjungpura
Widiyantoro, Ari; Department of Chemistry, Faculty of Mathematics and Natural Sciences, Tanjungpura University, Pontianak
Sayekti, Endah; Program Studi S2 Kimia, Fakultas MIPA, Universitas Tanjungpura
2022-12-30 00:00:00
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
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This license requires that reusers give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes. If others remix, adapt, or build upon the material, they must license the modified material under identical terms.
BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1127
Daruju (Acanthus ilicifolius Linn) contain flavonoids, terpenoids, steroids, saponins, alkaloids and tannins that can be used as antifeedant compounds. The purpose of this study is to identify the active compound antifeedant from daruju leaves against the eggplant leaf beetle (Epilachna sparsa). The antifeedant activity test was carried out on the methanol extract, the partitioned fraction and the isolate. This study was began by maceration of daruju leaf powder (1000 g) with methanol that obtained methanol extract of 130.3 g. The methanol extracts were then separated by partitioning that obtained n-hexane, dichloromethane, ethyl acetate and methanol fraction. Antifeedant activity test against eggplant leaf beetle (Epilachna sparsa) showed the dichlormethane fraction at a concentration of 6 ppm had the best activity compared to other fractions with an activity of 90.62%. Separation and purification of the dichloromethane fraction to obtain isolation was carried out by column chromatography. The isolate showed 96.1% antifeedant activity at a concentration of 6 ppm. Based on 1H-NMR spectrum showed isolate is p-Oxy-2-ethylhexyl benzaldehyde.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/1007
2023-11-30T16:34:31Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1007
2023-11-30T16:34:31Z
JURNAL KIMIA MULAWARMAN
Vol 21 No 1 (2023); 1-7
Determination of Total Antioxidant and Phenolic Content from Malvaceae Family Leaves Infusion by Spectrophotometry
Yefrida, Yefrida; Departement of Chemistry, FMIPA, Univesitas Andalas
Susanti, Silvia Detri; Departement of Chemistry, FMIPA, Univesitas Andalas
Refilda, Refilda; Departement of Chemistry, FMIPA, Univesitas Andalas
2023-11-22 00:00:00
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
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BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1007
The use of plants as a source of medicine has been increasing lately. The plants used generally have bioactivities such as anti-bacterial, antioxidant, and others. Plants that contain antioxidants are widely used because of their ability to capture free radicals so that they can protect the body from various diseases. One of the plants that is often used is plants from the Malvaceae family. In this study, the antioxidant and total phenolic contents of five types of plants were determined. These plants were extracted by infundation method and analyzed using MPM (Modified Phenanthroline Method) and Folin-Ciocalteu methods. The highest antioxidant and total phenolic contents were found in kapok randu and waru leaves.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/495
2023-03-26T10:18:21Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/495
2023-03-26T10:18:21Z
JURNAL KIMIA MULAWARMAN
Vol 15 No 1 (2017); 11-18
Penentuan Total Fenolik Dan Aktivitas Antioksidan Ekstrak Etanolik Daun Samama (Anthocephalus Macrophylus) Asal Ternate, Maluku Utara
Khadijah, Khadijah; Prodi Pendidikan Kimia Universitas Khairun, Ternate
Jayali, Ahmad Muchsin; Prodi Pendidikan Kimia Universitas Khairun, Ternate
Umar, Sudir; Prodi Pendidikan Kimia Universitas Khairun, Ternate
Sasmita, Iin; Prodi Pendidikan Kimia Universitas Khairun, Ternate
2017-11-28 00:00:00
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This license requires that reusers give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes. If others remix, adapt, or build upon the material, they must license the modified material under identical terms.
BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/495
Penelitian ini dilakukan untuk mengetahui kandungan total fenolik dan aktivitas antioksidan pada tanaman Samama atau Jabon Merah (Anthocephallus macrophyllus) asal Ternate Maluku Utara, serta menentukan hubungan antara kandungan total fenolik dengan aktivitas antioksidannya. Ekstrak etanol diperoleh dengan cara maserasi daun Samama yang telah dikeringkan dan dipisahkan berdasarkan umur daun (muda dan tua). Penentuan metabolit sekunder ekstrak dilakukan dengan skriining fitokimia yang menunjukkan adanya senyawa alkaloid, fenolik, steroid, dan saponin. Total fenolik ekstrak ditentukan dengan metode Folin-Ciocalteu diperoleh kadar total fenolik sebesar 119,68 mgGAE/g untuk daun muda dan 210,22 mgGAE/g untuk daun tua. Aktivitas antioksidan dianalisis dengan metode DPPH diperoleh nilai IC50 80.34 µg/mL pada daun muda, dan 43.49 µg/mL pada daun tua samama. Kandungan total fenolik ekstrak daun samama dan nilai IC50-nya menunjukkan hubungan linier y = -2,4647x + 317,22 dengan nilai determinasi R2 = 0.9996
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/772
2023-12-02T14:30:49Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/772
2023-12-02T14:30:49Z
JURNAL KIMIA MULAWARMAN
Vol 20 No 2 (2023); 64-69
LARVICIDE EFFECT OF TAGETES ERECTA EXTRACT HEXANE AND ACETONE FRACTION ON INSTAR 3 AND 4 AEDES AEGYPTI MOSQUITO LARVAE
Aminu, November Rianto; Universitas Kristen Satya Wacana
Soetjipto, Hartati; Universitas Kristen Satya Wacana
Kristijanto, A Ign; Universitas Kristen Satya Wacana
2023-05-23 00:00:00
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
This license requires that reusers give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes. If others remix, adapt, or build upon the material, they must license the modified material under identical terms.
BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/772
Resistance to temephos as a larvicide of A. aegyptimosquitoes has occurred in Indonesia. Therefore, it is necessary to look for other active compounds that can act as larvicides, but also environmentally friendly. This study used leaf and roots extract of T. erectahexane and acetone fraction as larvicide. The process begins with drying followed by extracting samples (leaves and roots of T. erecta) each with hexane and acetone solvents. Test solutions were made with a concentration of 0, 0.0075, 0.015, 0.03, and 0.1% (w/v) of the extract produced. Larvicide test was carried out referring to WHOPES by observing the mortality of instar larvae 3 and 4 in each extract. The results obtained showed the mortality percentage of larvae increased with increasing concentration and exposure time in both types of larvae. The lowest LC 50 was obtained from the root extract of hexane fraction (37 ppm) for 3rd instar larvae and acetone fraction (61 ppm) for instar 4 larvae.
Keywords: Larvae, A. aegypti, T. erecta. Fraction
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/692
2021-01-27T09:50:23Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/692
2021-01-27T09:50:23Z
JURNAL KIMIA MULAWARMAN
Vol 17 No 2 (2020); 61-67
PEMBUATAN SURFAKTAN BERBAHAN DASAR MINYAK BIJI MAHONI Swietenia macrophylla King DENGAN DIETANOLAMINA
Oktaviani, Catur; Jurusan Kimia FMIPA Universitas Mulawarman
Daniel, Daniel; Jurusan Kimia FMIPA Universitas Mulawarman
2020-05-29 00:00:00
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This license requires that reusers give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes. If others remix, adapt, or build upon the material, they must license the modified material under identical terms.
BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/692
en
ABSTRACT
This research was conducted to synthesize diethanolamide synthesis from methyl esters of mahogany seed oil (Swietenia macrophylla King) trough an oxidation reaction with variation in catalyst weight. The results showed that the 48,97% mahogany seed oil content of acid was 24,239 mg KOH/g. The mahogany seed oil was methyl ester through the reverse asterification method 0f 0,791 mg KOH/g, saponification is 88,373 mg KOH/g. The results of the GC-MS analysis of the dominant fatty acid are methyl linoleic by 36,02%. Methyl esters are reacted with diethanolamine through an amidation method using a variation of catalyst weight which is 0,5%, 1% and 1,5% with yield percentages of 71,197%, 79,638% and 82,035%. The optimum condition of diethanolamide synthesis is the catalyst weight variation of 1.5% which can reduce water surface tension by 45,159%. The FT-IR spectrum data shows that the absorption peak which is specific to the amide group is found at wave number 1620cm-1 so it can be concluded that the compound is diethanolamide.
Keyword : Mahogany seed oil, esterification amidation, diethanolamide.
ABSTRAK
Penelitian ini dilakukan untuk mensintesis dietanolamida dari metil ester minyak biji mahoni (Swietenia machrophylla King) melalui reaksi amidasi dengan variasi berat katalis. Hasil penelitian menunjukkan kandungan minyak biji mahoni 48,97% bilangan asam sebesar 24,239 mg KOH/g minyak biji mahoni tersebut dikonversi menjadi metil ester melalui metode esterifikasi menurunkan bilangan asam sebesar 0,791 mg KOH/g, bilangan penyabunan adalah 88,373 mg KOH/g. Hasil dari analisa GC-MS asam lemak yang dominan yaitu metil linoleat sebesar 36,02%. Metil ester direaksikan dengan dietanolamina melalui metode amidasi dengan menggunakan variasi berat katalis yaitu 0,5%, 1% dan 1,5% dengan persen rendemen sebesar 71,197%, 79,638% and 82,035%. Kondisi optimum dari sintesis dietanolamida yaitu pada variasi berat katalis 1,5% yang dapat menurunkan tegangan permukaan air sebesar 45,159%. Hasil data spektrum FT-IR menunjukkan puncak serapan yang spesifik untuk gugus amida terdapat pada bilangan gelombang 1620 cm-1 sehingga dapat disimpulkan bahwa senyawa tersebut adalah dietanolamida.
Kata Kunci : Minyak biji mahoni, esterifikasi, amidasi, dietanolamida
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/5
2023-02-13T13:42:02Z
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http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/5
2023-02-13T13:42:02Z
JURNAL KIMIA MULAWARMAN
Vol 12 No 2 (2015)
PENENTUAN KADAR ION Pb 2+ (TIMBAL) DALAM RAMBUT KARYAWAN BENGKEL DI KOTA SAMARINDA
Ajang, Linda; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
Yusuf, Bohari; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
Panggabean, Aman S; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
2015-09-22 00:00:00
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
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BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/5
id
Research on the determination of Pb 2+ ions (lead)in hair repair shop employee in the city of Samarinda. This study aims to determine whether there is a relationship between the concentration of lead ions in the workshop employees hair against old age and work. Measurements of Pb 2+ ions (lead) was performed using Atomic Absorption Spectrophotometer (AAS). Hair cut into small pieces, washed, crushed or burned into ashes and homogenized and analyzed by Atomic Absorption Spectrophotometer (AAS). The results obtained from the measurement and analysis of Pb 2+ ions concentration in hair repair shop employee is 0.2193 ppm and 0.3665 ppm lowest to highest. At the workshop employees there is a relationship between age and levels of Pb 2+ ions (lead) in the hair, while there was no correlation between long working white Pb, it’s based on a statistical analysis of the results of the determination coefficient and linear regression.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/77
2017-09-02T13:19:21Z
JKM:ART
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http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/77
2017-09-02T13:19:21Z
JURNAL KIMIA MULAWARMAN
Vol 8 No 1 (2010)
STUDI AB INITIO GRAFIT BATUBARA SEBAGAI MATERI PENYIMPAN HIDROGEN
Gunawan, Rahmat; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
David, Melanie; Division of Precision Science and Technology and Applied Physics
Osaka University, Suita, Osaka, 565-0871, Japan
Kasai, Hideaki; Division of Precision Science and Technology and Applied Physics
Osaka University, Suita, Osaka, 565-0871, Japan
Martoprawiro, Muhammad A.; Kelompok Keahlian Kimia Fisik dan Anorganik, Institut Teknologi Bandung
Radiman, Cynthia L.; Kelompok Keahlian Kimia Fisik dan Anorganik, Institut Teknologi Bandung
Dipojono, Herman K.; Laboratorium Computational Material Design-Quantum Engineering
Institut Teknologi Bandung
2016-02-23 11:03:31
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BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/77
id
Calculation of density functional theory (DFT) is carried out to investigate the adsorption of six molecules of H2 molecules on a graphite planar layer with a doping of alkali metal (Li, Na, and K). We reported that the DFT-GGA method, the presence of alkali metals on graphite, and H2-(GICs), have changed the interaction and the electronic system. We also reported that the ratio increased electron transfer from K to Na and Li. The calculation of the charge density shows that the increase in energy due to the transfer of electrical charge from GICs to six molecules of H2. This changes the electronic properties of graphite that are important in applications such as hydrogen storage.Keywords: Molecule Hydrogen, Graphite Intercalated Compounds, Density Functional Theory
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/1012
2023-03-26T10:16:42Z
JKM:ART
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http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1012
2023-03-26T10:16:42Z
JURNAL KIMIA MULAWARMAN
Vol 19 No 1 (2021); 24-29
STUDI KOMPUTASI INTERAKSI ZEOLIT LTA (LINDE TYPE A) DENGAN KATION ALKALI (LI+, NA+, K+) MENGGUNAKAN METODE MEKANIKA MOLEKULER
Iswaradi, Audi Zahid; Universitas Mulawarman
Gunawan, Rahmat; Kimia FMIPA Universitas Mulawarman
Hindryawati, Noor; Kimia FMIPA Universitas Mulawarman
2021-11-30 00:00:00
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
This license requires that reusers give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes. If others remix, adapt, or build upon the material, they must license the modified material under identical terms.
BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1012
en
A study of computation on zeolite LTA (Linde Type A) interaction with alkaline cation (Li+, Na+, K+) using the mechanical molecular method was conducted. Data processing was conducted computationally using Hyperchem 7.0 with the mechanical molecular method. The result of the study showed zeolite LTA with ratio Si/Al 2,4286 has the lowest minimum energy. Furthermore, impregnation by cation Li+ increases structure stability, and impregnation by cation Na+ has the largest diameter window on Zeolite LTA.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/726
2023-06-20T02:05:31Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/726
2023-06-20T02:05:31Z
JURNAL KIMIA MULAWARMAN
Vol 16 No 1 (2018); 42-48
MODIFIKASI KOPOLIMER KARET ALAM SIKLIS GRAFTING ASAM OLEAT MENGGUNAKAN INISIATOR BENZOIL PEROKSIDA DAN BAHAN PENGISI BENTONIT-CETIL TRIMETIL AMONIUM BROMIDA
Ritonga, Ahmad Hafizullah; Universitas Sari Mutiara Indonesia
Aritonang, Barita; Program Studi Kimia - Universitas Sari Mutiara Indonesia
Putra Zai, Liver Iman; Program Studi Kimia - Universitas Sari Mutiara Indonesia
2018-11-29 00:00:00
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
This license requires that reusers give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes. If others remix, adapt, or build upon the material, they must license the modified material under identical terms.
BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/726
Research on the modification of Cyclic Natural Rubber (CNR) grafting Oleic Acid (OA) copolymer using initiator of Benzoyl Peroxide (BPO) and the filler of bentonite-Cetil Trimethyl Ammonium Bromide (CTAB) has been carried out, which aims to determine the method of modifying Cyclic Natural Rubber (CNR) and Oleic Acid (OA) so it can produce CNR-g-OA copolymer through grafting method with BPO initiator mixed together with bentonite-CTAB. This research was conducted in three stages. The first stage is the process of dissolving CNR using xylene. The second stage is the process of mixing CNR solution and OA with the composition (70:30) phr, followed by the addition of BPO initiator and bentonite-CTAB filler. The third stage is characterization using FTIR and Scanning Electron Microscopy (SEM). The results of the analysis using FT-IR showed an absorption at 1708,23 cm-1 which indicated the presence of C=O bonds from oleic acid which had been grafted on CNR, and increased intensity after addition of bentonite-CTAB at 1568,96 cm-1; 1446,13 cm-1; 1255,66 cm-1; and 866,94 cm-1. Characterization results using SEM showed that the mixing of Bentonite-CTAB in KAS-g-OA was evenly distributed and quite homogeneous.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/604
2023-06-20T02:08:42Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/604
2023-06-20T02:08:42Z
JURNAL KIMIA MULAWARMAN
Vol 15 No 2 (2018); 117-121
Identifikasi Potensi Jeruk Purut Sebagai Demulsifier Untuk Memisahkan Air Dari Emulsi Minyak di Lapangan Minyak Riau
Erfando, Tomi; Universitas Islam Riau
2018-05-30 00:00:00
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BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/604
Emulsion stability is an indicator that needs to be controlled to prevent the degradation of petroleum quality. Emulsion breakdown is one of the mechanisms to separate the water phase from oil. It is transformed into a chemical compound that is expected to function as emulsion blocking or commonly known as a demulsifier. An organic demulsifier is one of the right ideas in preventing environmental pollution without diminishing its main function as an emulsion breaker. The bottle test method is one of the most commonly used methods in demulsification tests. Testing using this method is done by inserting the prepared emulsion into the bottle, then it will be placed into a waterbath under certain temperature conditions for several hours. This test will be done by looking at the demulsification that occurs every 30 minutes. From the testing of temperature, concentration, and effectiveness of the formulated formula, an optimal condition is obtained based on the highest demulsification efficiency. Based on the research, optimal condition of organic demulsifier formula is (3ml, 80˚C) with 7 ml demulsification efficiency. The results obtained from organic material formulations have not been able to increase the effectiveness of emulsion-breaking processes compared to commercial demulsifiers and basecase conditions (20 ml).
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/206
2018-03-19T05:53:03Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/206
2018-03-19T05:53:03Z
JURNAL KIMIA MULAWARMAN
Vol 13 No 2 (2016)
Aktivitas Antioksidan Senyawa Flavonoid Dari Macaranga pearsonii Merr.
Marliana, Eva; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
Tjahjandarie, Tjitjik Srie; Fakultas Sains dan Teknologi Universitas Airlangga Surabaya
Tanjung, Mulyadi; Fakultas Sains dan Teknologi Universitas Airlangga
2016-06-14 00:00:00
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
This license requires that reusers give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes. If others remix, adapt, or build upon the material, they must license the modified material under identical terms.
BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/206
id
Tiga senyawa flavanon , 4’-O-metil-8-isoprenileriodiktiol (1), 4’-O-metil-8-isoprenilnaringenin (2) and Lonkokarpol A (3) , telah diisolasi dari ekstrak metanol daun Macaranga pearsonii Merr. Elusidasi struktur senyawa berdasarkan data spektroskopi UV, 1D and 2D NMR, and HREISMS. Senyawa 1 – 3 ditentukan aktivitas antioksidannya terhadap peredaman radikal bebas 2,2-diphenyl-1-picrylhydrazyl (DPPH), dengan nilai IC50 adalah 536,89 μM, 1226,11 μM dan 426,43 μM.
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/39
2017-12-15T04:01:27Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/39
2017-12-15T04:01:27Z
JURNAL KIMIA MULAWARMAN
Vol 13 No 1 (2015)
Uji Toksisitas Ekstrak Kelopak Jantung Pisang Kepok (Musa Paradisiaca Linn.) dengan Metode BSLT (Brine Shrimp Lethality Test)
Tekha, Kalmud Nia; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
-, Erwin; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
Kartika, Rudi; Jurusan Kimia
Fakultas Matematika dan Ilmu Pengetahuan Alam
Universitas Mulawarman
2016-01-19 12:10:11
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
This license requires that reusers give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes. If others remix, adapt, or build upon the material, they must license the modified material under identical terms.
BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/39
id
The phytochemical tests and toxicity test extract from petals of kepok banana flowers (Musa paradisiaca Linn.) have been researched. The method used is Brine Shrimp Lethality Test (BSLT). According the results of phytochemicals test from petals of the kepok banana flowers (Musa paradisiaca Linn.) contains compounds metabolite secondary which is alkaloids, saponin and triterpenoid. The toxicity test showed the most active fraction is the ethanol fraction with 304.8067 ppm of LC50 values.Keywords: Musa paradisiaca Linn., phytochemical test, toxicity test (BSLT)
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/213
2017-12-15T04:00:55Z
JKM:ART
v2
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/213
2017-12-15T04:00:55Z
JURNAL KIMIA MULAWARMAN
Vol 14 No 1 (2016)
PENGARUH VARIASI RASIO Si/Al STRUKTUR ZEOLIT A DAN VARIASI KATION (Li+, Na+, K+) TERHADAP PERUBAHAN UKURAN WINDOW ZEOLIT A MENGGUNAKAN METODE MEKANIKA MOLEKULER
Kristianingrum, Maria Amelia; Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Mulawarman
Gunawan, Rahmat; Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Mulawarman
Kartika, Rudi; Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Mulawarman
2016-11-08 00:00:00
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
This license requires that reusers give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, even for commercial purposes. If others remix, adapt, or build upon the material, they must license the modified material under identical terms.
BY: Credit must be given to you, the creator.
SA: Adaptations must be shared under the same terms.
url:http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/213
id
The structure modeling of zeolite A using calculation of molecular mechanics methods with variation of Si/Al ratio ( 1; 1,18; 1,4; 1,66 and 2) and variation of cations (Li+, Na+, K+) has been investigated. The result shows that the structure of zeolit A with the ratio of Si/Al = 2, has the most stable structure with a minimum energy 1757,1420 kcal/mol. The most stable zeolite A structure impregnated with cations are determined from the lowest energy which is 1686,8383 kcal/mol for the structure with K+ cation. In addition result shows that the structure with Li+ cation has the largest window diameter, thus affecting the window size of the zeolite A structure of which potentially has the best adsorbent capacity.
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