2024-03-28T19:41:49Z
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/index/oai
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/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/80
2017-09-02T13:19:18Z
JKM:ART
PEMANFAATAN ARANG AKTIF DARI TEMPURUNG Jatropha curcas L. YANG TERMODIFIKASI SEBAGAI ADSORBEN LOGAM TEMBAGA (Cu)
Wirawan, Teguh
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
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2016-02-24
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/80
JURNAL KIMIA MULAWARMAN; Vol 8 No 1 (2010)
JURNAL KIMIA MULAWARMAN; Vol 8 No 1 (2010)
2476-9258
1693-5616
ind
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/80/79
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/1069
2023-12-04T11:28:27Z
JKM:ART
IDENTIFIKASI DEKSAMETASON PADA JAMU PENGGEMUK BADAN YANG DIJUAL DI E-MARKETPLACE SHOPEE MENGGUNAKAN KROMATOGRAFI LAPIS TIPIS
Ningsih, Sri Widia
Sirait, Lerny Serena
Setiyawati, Dewi
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
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2021-11-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1069
10.30872/jkm.v19i1.1069
JURNAL KIMIA MULAWARMAN; Vol 19 No 1 (2021); 39-44
JURNAL KIMIA MULAWARMAN; Vol 19 No 1 (2021); 39-44
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1069/915
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/204
2018-03-19T06:22:13Z
JKM:ART
Pembuatan Etanol Dari Biji Cempedak (Artocarpus champeden sp.) Dengan Hidrolisis Menggunakan Enzim Alfa Amilase Dan Glukolase Fermentasi Saccharomyces cerevisiae
PEMBUATAN ETANOL DARI BIJI CEMPEDAK (Artocarpus champeden sp.) DENGAN HIDROLISIS MENGGUNAKAN ENZIM ALFA AMILASE DAN GLUKOLASE FERMENTASI Saccharomyces cerevisiae
Santoso, Wahyu Teguh
-, Alimuddin
Kartika, Rudi
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 %.
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 %
Kata Kunci: Etanol, Biji Cempedak (Artocarpus champedan sp.) dan Fermentasi.
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2016-06-14
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/204
JURNAL KIMIA MULAWARMAN; Vol 13 No 2 (2016)
JURNAL KIMIA MULAWARMAN; Vol 13 No 2 (2016)
2476-9258
1693-5616
ind
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/204/180
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/527
2023-12-02T14:31:06Z
JKM:ART
EXTRACTION AND CHARACTERIZATION OF PECTIN FROM LEMON LIME PEEL WASTE (Citrus amblycarpa)
Ekstraksi EKSTRAKSI DAN KARAKTERISASI PEKTIN DARI LIMBAH KULIT JERUK LIMAU (Citrus amblycarpa)
Maulida, Fiqi Estuning Nava
Alimuddin, Alimuddin
Erwin, Erwin
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
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2023-05-23
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/527
10.30872/jkm.v20i2.527
JURNAL KIMIA MULAWARMAN; Vol 20 No 2 (2023); 56-63
JURNAL KIMIA MULAWARMAN; Vol 20 No 2 (2023); 56-63
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/527/781
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/34
2016-01-19T02:36:39Z
JKM:ART
PEMANFAATAN TUMBUHAN SERAI WANGI (Cymbopogon nardus (L.) RENDLE) SEBAGAI ANTIOKSIDAN ALAMI
G, Willem Hendrik
-, Erwin
Panggabean, Aman Sentosa
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.
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2016-01-19
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/34
JURNAL KIMIA MULAWARMAN; Vol 10 No 2 (2013)
JURNAL KIMIA MULAWARMAN; Vol 10 No 2 (2013)
2476-9258
1693-5616
ind
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/34/40
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/406
2018-03-16T08:25:18Z
JKM:ART
Penentuan Kadar Asam Amino Esensial (Metionin, Leusin, Isoleusin Dan Lisin) Pada Telur Penyu Dan Telur Bebek
PENENTUAN KADAR ASAM AMINO ESENSIAL (METIONIN, LEUSIN, ISOLEUSIN DAN LISIN) PADA TELUR PENYU DAN TELUR BEBEK
ginting, agita rachmala
sitorus, saibun
astuti, winni
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%.
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%.
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2017-05-29
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/406
JURNAL KIMIA MULAWARMAN; Vol 14 No 2 (2017); 91-99
JURNAL KIMIA MULAWARMAN; Vol 14 No 2 (2017); 91-99
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/406/308
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/586
2023-06-20T02:05:10Z
JKM:ART
AKTIVITAS ANTIMALARIA SENYAWA FLAVANON TERISOPRENILASI DARI KULIT BATANG Erythrina fusca L.
Flavanon
Fatmawati, Novi
Anggreini, Novi
Saputri, Ratih Dewi
Tjahjandarie, Tjitjik Srie
Tanjung, Mulyadi
Two isoprenylated flavanones namely as lonchocarpol A (1) dan lupinifolin (2) were isolated from the stem bark of Limonia accidissima L. Erythrina fusca L. Their structures were determined based on spectroscopic data such as UV, IR, MS and NMR. Compounds 1–2 were evaluated for their antimalarial against Plasmodium falciparum strain 3D7 showing their IC50 were 1.18 and 0.8 µg/ml, respectively and very high activity.
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2018-11-29
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/586
10.30872/jkm.v16i1.586
JURNAL KIMIA MULAWARMAN; Vol 16 No 1 (2018); 36-41
JURNAL KIMIA MULAWARMAN; Vol 16 No 1 (2018); 36-41
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/586/447
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/608
2023-06-20T02:08:04Z
JKM:ART
INCORPORATION VITAMIN E FROM PFAD IN MATRIX OF MIXED GALAKTOMANAN KOLANG-KALING (Arenga pinnata) AND GUM ACASIA
INKORPORASI VITAMIN E PFAD PADA CAMPURAN GALAKTOMANAN KOLANG-KALING (Arenga pinnata) DAN GUM ACASIA
ZULMI, REZA
Kaban, Jamaran
Tarigan, Juliati
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%.
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2018-07-24
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/608
10.30872/jkm.v15i2.608
JURNAL KIMIA MULAWARMAN; Vol 15 No 2 (2018); 87-93
JURNAL KIMIA MULAWARMAN; Vol 15 No 2 (2018); 87-93
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/608/417
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/64
2017-09-02T13:19:24Z
JKM:ART
UJI TOKSISITAS DAN AKTIVITAS ANTIBAKTERI BERBAGAI FRAKSI EKSTRAK DAUN TANAMAN KAMBOJA (Plumeria acuminate Ait.)
Pasaribu, Subur P
Nuriah, Wahidatul
-, Erwin
Kimia
Plumeria acuminate Ait., Phytochemical Test, Antibacteria Activity Test, Bacteria, LC 50 .
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.
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2016-01-27
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/64
JURNAL KIMIA MULAWARMAN; Vol 10 No 2 (2013)
JURNAL KIMIA MULAWARMAN; Vol 10 No 2 (2013)
2476-9258
1693-5616
ind
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/64/65
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/495
2023-03-26T10:18:21Z
JKM:ART
Penentuan Total Fenolik Dan Aktivitas Antioksidan Ekstrak Etanolik Daun Samama (Anthocephalus Macrophylus) Asal Ternate, Maluku Utara
Khadijah, Khadijah
Jayali, Ahmad Muchsin
Umar, Sudir
Sasmita, Iin
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
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2017-11-28
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/495
10.30872/jkm.v15i1.495
JURNAL KIMIA MULAWARMAN; Vol 15 No 1 (2017); 11-18
JURNAL KIMIA MULAWARMAN; Vol 15 No 1 (2017); 11-18
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/495/331
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/1106
2023-11-30T16:34:11Z
JKM:ART
Analisis Fitokimia Dan Uji Aktivitas Antibakteri Ekstrak Metanol Daun Suji (Pleomle Angusitolia N.E Brown)
Kurnia, Lutfiana Devi
Ruga, Ritbey
Saleh, Chairul
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.
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2022-11-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1106
10.30872/jkm.v20i1.1106
JURNAL KIMIA MULAWARMAN; Vol 20 No 1 (2022); 17-22
JURNAL KIMIA MULAWARMAN; Vol 20 No 1 (2022); 17-22
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1106/756
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/24
2016-01-13T18:04:29Z
JKM:ART
MENINGKATKAN KUALITAS REPEATABILITY DAN REPRODUCIBILITY SAMPEL LIQUID GAS DE-ETHANIZER DI PT. BADAK DENGAN MEMODIFIKASI ALAT PREPARASI PADA KROMATOGRAFI GAS
-, Ardiansyah
Saleh, Chairul
Gunawan, Rahmat
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
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2016-01-14
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/24
JURNAL KIMIA MULAWARMAN; Vol 11 No 2 (2014)
JURNAL KIMIA MULAWARMAN; Vol 11 No 2 (2014)
2476-9258
1693-5616
ind
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/24/31
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/737
2023-03-26T10:13:40Z
JKM:ART
DECREASING OF COD AND TSS FROM LAUNDRY WASTE USES ALUMINUM (Al) AND COPPER (Cu) ELECTRODES IN THE ELECTROCOAGULATION METHOD
PENURUNAN COD DAN TSS PADA LIMBAH LAUNDRY MENGGUNAKAN ELEKTRODA ALUMINIUM (Al) DAN TEMBAGA (Cu) PADA METODE ELEKTROKOAGULASI
Sumawan, Mirna Desyderia
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%.
Penelitian tentang penurunan COD dan TSS pada limbah laundry dengan metode Elektrokoagulasi menggunakan elektroda Aluminium (Al) dan Tembaga (Cu) pada penurunan COD dan TSS telah dilakukan. Dalam penelitian ini ditentukan tegangan dan waktu optimum berdasarkan kejernihan yang terjadi pada proses Elektrokoagulasi. Hasil penelitian menunjukkan penurunan COD dan TSS pada waktu kontak 60 menit dengan waktu COD sebesar 90,5645% dan TSS sebesar 63,7279%. Kuat tegangan optimum yang diperoleh adalah 12 Volt, menghasilkan penurunan COD sebesar 90,2392% dan TSS sebesar 60,7052%.
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2021-05-31
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/737
10.30872/jkm.v18i2.737
JURNAL KIMIA MULAWARMAN; Vol 18 No 2 (2021); 84 - 89
JURNAL KIMIA MULAWARMAN; Vol 18 No 2 (2021); 84 - 89
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/737/682
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/622
2021-01-27T09:50:23Z
JKM:ART
THE EFFECT OF FREE FATTY ACID CONTENT TO THE CRUDE PALM OIL DENSITY CHANGING
PENGARUH KANDUNGAN ASAM LEMAK BEBAS (ALB) TERHADAP PERUBAHAN DENSITAS CRUDE PALM OIL (CPO)
FAHMI, ALIYAH
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
Densitas merupakan salah satu parameter fisika dalam penentuan mutu minyak sawit mentah atau Crude Palm oil (CPO) yang dilakukan dengan metode gravimetri (penimbangan berat sampel dengan piknometer kapasitas 50 mL (g/mL). Nilai densitas dipengaruhi oleh temperatur dimana semakin tinggi temperatur CPO maka densits akan semakin berkurang. Namun jika temperatur diberlakukan rendah pada saat penyimpanan atau saat pengangkutannya membuat CPO berubah menjadi padat dan keadaan ini tidak diinginkan dalam industri perdagangan CPO tersebut. Akibat dari tingginya temperatur dapat menyebabkan terjadi reaksi hidrolisis yang menyebabkan asam lemak bebas (ALB) semakin banyak terbentuk. Densitas minyak sawit mentah ditentukan dengan variasi ALB 2%, 3%, 4%, 5% dan 6% dengan temperatur 450C, 500C, 550C, 600C dan 650C. Dari hasil penelitian yang diperoleh dapat disimpulkan bahwa semakin tinggi kadar ALB maka densitas akan semakin turun seiring dengan kenaikan temperatur. Dari hasil penelitian yang dilakukan diperoleh hubungan linier menurun dimana pada temperatur yang sama yaitu 450C maka nilai densitas CPO dengan kadar ALB 2%, 3%, 4%, 5% dan 6% semakin menurun ((?=0,8934; 0,8391; 0,8926; 0,8921 dan 0,8920 (g/mL) dan semakin menurun dengan kenaikan temperatur pada 500C, 550C, 600C dan 650C.
Kata kunci: Densitas, CPO, ALB, Temperatur
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2020-05-29
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/622
JURNAL KIMIA MULAWARMAN; Vol 17 No 2 (2020); 56-60
JURNAL KIMIA MULAWARMAN; Vol 17 No 2 (2020); 56-60
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/622/601
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/55
2017-09-02T13:19:32Z
JKM:ART
VALIDASI METODE ANALISIS KADAR TIMBAL (Pb) DALAM MADU ALAM DI KALIMANTAN TIMUR
Aprianto, Finqo
Yusuf, Bohari
Gunawan, Rahmat
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
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2016-01-26
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/55
JURNAL KIMIA MULAWARMAN; Vol 9 No 2 (2012)
JURNAL KIMIA MULAWARMAN; Vol 9 No 2 (2012)
2476-9258
1693-5616
ind
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/55/56
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/450
2023-11-30T16:44:24Z
JKM:ART
ANALISIS KADAR ION BESI (Fe2+) DAN ION TIMBAL (Pb2+) DALAM IKAN MAKAREL KEMASAN KALENG BERDASARKAN LAMA WAKTU PENYIMPANAN
Karlina, Dessy
Alimuddin, Alimuddin
Saleh, Chairul
Analysis of iron ion (Fe2+) and lead ion (Pb2+) content in canned mackerel based long storage time has been investigated. The content of iron ion (Fe2+) and lead ion (Pb2+) has been analysed used the instrument Atomic Absorption Spectrophotometer (AAS). Based on long storage time result analysis of the content of iron ion (Fe2+) in canned mackerel the lowest is 2,71 mg/Kg with long storage time of 33 month and the highest is 5,21 mg/Kg with long storage time of 9 month while the result analysis of lead ion (Pb2+) in canned mackerel is not detected. Based on the result conclude is long storage time not affect the levels iron ion (Fe2+) and lead ion (Pb2+) in canned mackerel.
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2019-05-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/450
10.30872/jkm.v16i2.450
JURNAL KIMIA MULAWARMAN; Vol 16 No 2 (2019); 78-82
JURNAL KIMIA MULAWARMAN; Vol 16 No 2 (2019); 78-82
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/450/524
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/15
2017-12-15T04:02:05Z
JKM:ART
ADSORPSI LOGAM KADMIUM (Cd) OLEH ARANG AKTIF DARI TEMPURUNG AREN (Arenga pinnata) DENGAN AKTIVATOR HCl
Lestari, Indri Ayu
-, Alimuddin
Yusuf, Bohari
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+
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2014-11-24
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/15
JURNAL KIMIA MULAWARMAN; Vol 12 No 1 (2014)
JURNAL KIMIA MULAWARMAN; Vol 12 No 1 (2014)
2476-9258
1693-5616
ind
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/15/22
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/213
2017-12-15T04:00:55Z
JKM:ART
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
Gunawan, Rahmat
Kartika, Rudi
Methods of Molecular Mechanics, Zeolite A, Alkaline Metal, Window Size.
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.
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2016-11-08
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/213
JURNAL KIMIA MULAWARMAN; Vol 14 No 1 (2016)
JURNAL KIMIA MULAWARMAN; Vol 14 No 1 (2016)
2476-9258
1693-5616
ind
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/213/278
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/1263
2023-11-30T16:34:31Z
JKM:ART
Active Compounds of Sembung Leaves (Blumea balsamifera DC) in Silico Screening as Antihypertensives
Sjahriza, Ahmad
Shellia, Fyrda
Iswantini, Dyah
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.
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2023-11-26
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1263
10.30872/jkm.v21i1.1263
JURNAL KIMIA MULAWARMAN; Vol 21 No 1 (2023); 38-54
JURNAL KIMIA MULAWARMAN; Vol 21 No 1 (2023); 38-54
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1263/910
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/39
2017-12-15T04:01:27Z
JKM:ART
Uji Toksisitas Ekstrak Kelopak Jantung Pisang Kepok (Musa Paradisiaca Linn.) dengan Metode BSLT (Brine Shrimp Lethality Test)
Tekha, Kalmud Nia
-, Erwin
Kartika, Rudi
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)
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2016-01-19
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/39
JURNAL KIMIA MULAWARMAN; Vol 13 No 1 (2015)
JURNAL KIMIA MULAWARMAN; Vol 13 No 1 (2015)
2476-9258
1693-5616
ind
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/39/45
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/476
2018-03-16T08:40:38Z
JKM:ART
Korelasi Kadar Total Logam Pb Terhadap Kadar Protein Pada Udang Putih (Penaeus marguiensis) Yang Diambil Dipesisir Pulau Bunyu Kalimantan Utara
Korelasi Kadar Total Logam Pb Terhadap Kadar Protein Pada Udang Putih (Penaeus marguiensis) Yang Diambil Dipesisir Pulau Bunyu Kalimantan Utara
Kartika, Rudi
Research on "Correlation levels of Pb to the total protein content in the white shrimp (Penaeus merguiensis) taken around the coast of North Borneo Bunyu Island". This study aims to determine the total concentration of Pb and protein levels in white shrimp by size and sampling different regions. then the total levels of Pb and protein correlated with Least Square method. Analysis of Pb total metal content by using AAS (Atomic Absorption Spectrophotometer) and analysis of protein content using the Kjeldahl method. In this study, the levels of Pb total in area 1 with an average of 0,738 mg/L, the levels of Pb total in area 2 with an average of 0.926 mg/L, the levels of Pb total area 3 with an average of 0,841 mg/L. The protein content of white shrimp in area 1 with an average of 27,8644%, protein content in area 2 gained an average of 29,0333% and 3 area gained an average protein content of 27,8635%. Correlation levels of Pb total the protein content of the white shrimp (Penaeus merguiensis) r = 0.877
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2017-05-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/476
JURNAL KIMIA MULAWARMAN; Vol 14 No 2 (2017); 127-133
JURNAL KIMIA MULAWARMAN; Vol 14 No 2 (2017); 127-133
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/476/313
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/1015
2023-11-30T16:34:11Z
JKM:ART
Potensi Bakteri Endofit Daun Pucuk Merah (Syzygium Myrtifolium Walp.) Sebagai Antibakteri Terhadap Propionibacterium Acnes
Alhayyu, Wihda Nisa
Astuti, Winni
Marliana, Eva
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.
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2022-12-28
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1015
10.30872/jkm.v20i1.1015
JURNAL KIMIA MULAWARMAN; Vol 20 No 1 (2022); 1 - 8
JURNAL KIMIA MULAWARMAN; Vol 20 No 1 (2022); 1 - 8
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1015/754
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/5
2023-02-13T13:42:02Z
JKM:ART
PENENTUAN KADAR ION Pb 2+ (TIMBAL) DALAM RAMBUT KARYAWAN BENGKEL DI KOTA SAMARINDA
Ajang, Linda
Yusuf, Bohari
Panggabean, Aman S
Kimia
Lead, Hair, Atomic Absorption Spectrophotometer (AAS)
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.
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2015-09-22
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/5
JURNAL KIMIA MULAWARMAN; Vol 12 No 2 (2015)
JURNAL KIMIA MULAWARMAN; Vol 12 No 2 (2015)
2476-9258
1693-5616
ind
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/5/9
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/584
2023-03-26T10:19:15Z
JKM:ART
Isolation Of Antioxidant Compounds Of N-Hexane Extract Of Nutmeg (Myristica Fragrans Houtt) Leaves
Ginting, Binawati
Hadijah, Siti
Helwati, Hira
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.
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2017-11-29
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/584
10.30872/jkm.v15i1.584
JURNAL KIMIA MULAWARMAN; Vol 15 No 1 (2017); 46-52
JURNAL KIMIA MULAWARMAN; Vol 15 No 1 (2017); 46-52
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/584/381
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/1108
2023-12-02T16:09:36Z
JKM:ART
PREPARATION OF FE-DOPED ZINC OXYSULFIDE (Fe-Zn(O,S)) WITH SURFACE DEFECT FOR HYDROGEN EVOLUTION REACTION
Shuwanto, Hardy
Lie, Jenni
Abdullah, Hairus
Pasaribu, Subur P.
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+).
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2023-05-26
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1108
10.30872/jkm.v20i2.1108
JURNAL KIMIA MULAWARMAN; Vol 20 No 2 (2023); 92-97
JURNAL KIMIA MULAWARMAN; Vol 20 No 2 (2023); 92-97
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1108/778
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/76
2017-09-02T13:19:23Z
JKM:ART
PEMBUATAN LEMAK KAKAO RENDAH KALORI DENGAN MINYAK KELAPA (COCONUT OIL)) MELALUI REAKSI INTERESTERIFIKASI
Hilda, Lelya
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
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2016-02-23
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/76
JURNAL KIMIA MULAWARMAN; Vol 8 No 1 (2010)
JURNAL KIMIA MULAWARMAN; Vol 8 No 1 (2010)
2476-9258
1693-5616
ind
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/76/75
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/898
2023-12-04T11:25:36Z
JKM:ART
VALIDATION METHOD OF DETERMINATION OF Cd (II) IN NPK FERTILIZER BY FLAME ATOMIC ABSORPTION SPECTROPHOTOMETRY AT THE QUALITY CONTROL LABORATORY, PT. PUPUK KALIMANTAN TIMUR
VALIDASI METODE PENENTUAN Cd (II) DALAM PUPUK NPK SECARA SPEKTROFOTOMETRI SERAPAN ATOM NYALA DI LABORATORIUM UJI KUALITAS, PT. PUPUK KALIMANTAN TIMUR
Hayon, Leonardus Lewo
Alimuddin, Alimuddin
Panggabean, Aman Sentosa
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 %.
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2021-11-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/898
10.30872/jkm.v19i1.898
JURNAL KIMIA MULAWARMAN; Vol 19 No 1 (2021); 8-16
JURNAL KIMIA MULAWARMAN; Vol 19 No 1 (2021); 8-16
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/898/703
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/433
2023-06-20T02:05:00Z
JKM:ART
ACTIVITIES OF AMYLASE, PROTEASE and LIPASE FROM HONEY Trigona sp, Apis mellifera and Apis dorsata
AKTIVITAS AMILASE, PROTEASE dan LIPASE DARI MADU LEBAH Trigona sp, Apis mellifera dan Apis dorsata
Putra, Hendric Surya
Astuti, Winni
Kartika, Rudi
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.
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2018-11-29
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/433
10.30872/jkm.v16i1.433
JURNAL KIMIA MULAWARMAN; Vol 16 No 1 (2018); 27-31
JURNAL KIMIA MULAWARMAN; Vol 16 No 1 (2018); 27-31
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/433/471
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/626
2018-07-24T07:34:18Z
JKM:ART
FRONT MATTER
Mulawarman, Jurnal Kimia
FRONT MATTER include Cover, Indexing and Editorial Boar
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2018-05-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/626
JURNAL KIMIA MULAWARMAN; Vol 15 No 2 (2018)
JURNAL KIMIA MULAWARMAN; Vol 15 No 2 (2018)
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/626/422
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/200
2017-09-02T13:21:27Z
JKM:ART
Pengaruh Pemberian Ekstrak Etanol Daun Kecapi (Sandoricum koetjape (Burm.f.) Merr.) Terhadap Penurunan Kadar Kolesterol Total pada Mencit Jantan (Mus musculus)
Kartika, Rudi
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.
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2016-06-14
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/200
JURNAL KIMIA MULAWARMAN; Vol 13 No 2 (2016)
JURNAL KIMIA MULAWARMAN; Vol 13 No 2 (2016)
2476-9258
1693-5616
ind
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/200/176
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/29
2016-01-18T06:10:36Z
JKM:ART
IMPLEMENTASI BAKU MUTU AIR LIMBAH BERBASIS DAYA TAMPUNG BEBAN PENCEMARAN BADAN AIR PENERIMA PADA KEGIATAN PERTAMBANGAN BATUBARA
Sitorus, Saibun
Simangunsong, Binsar
This research is based on the fact that many rivers in East Kalimantan are complained to be polluted by coal mining activities even though many rules to protect surface waters are in place and obeyed. To explain why it is happened, an audit is conducted to the regulations and to the implementation of the regulations. Desk audit is carried out to assess whether the regulations about waste assimilative capacity and effluent limitation that are currently endorsed are appropriate or not compared to the TMDL concept. The audit of implementation is carried out to assess whether the regulations are applied thoroughly or not. The results is that the technical regulations to determine the class of water and to allocation waste load are absent.Therefore, many regulations related the water quality based effluent limitation are not implemented properly. Most of effluent limitation refer directly to the national or provincial standards that are usually less stringent than the water quality based standard of the local rivers or small rivers. The case study in Loa Haur River obtains that the waste assimilative capacity of the river is 33.696 ton of TSS/day. The WAC that is allocated to 6 (six) coal mining in the sub basin of Loa Haur is 5 ton/day. The allocation is based on their production capacity. The results of water quality based effluent limitation of coal mining companies in the Loa Haur sub basin is 0.17 ton TSS/day or its concentration of 114.63 mg/L.Keywords: Audit, implementation, polluted coal mining
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2013-05-18
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/29
JURNAL KIMIA MULAWARMAN; Vol 10 No 2 (2013)
JURNAL KIMIA MULAWARMAN; Vol 10 No 2 (2013)
2476-9258
1693-5616
ind
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/29/36
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/912
2021-01-27T09:50:23Z
JKM:ART
PENENTUAN KUALITAS AIR SUMUR BOR DI DAERAH MARANGKAYU KABUPATEN KUTAI KARTANEGARA
Anggraini, Yessy Parasamya
Aipassa, Marlon Ivanhoe
Panggabean, Aman S.
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.
Penelitian tentang penentuan kualitas air sumur bor di daerah Marangkayu Kabupaten Kutai Kertanegara telah dilakukan. Kualitas dari air sumur bor yang dihasilkan dapat diketahui dengan menentukan jumlah dari beberapa parameter penting kualitas air tanah yang dihasilkan sumur bor pemerintah yang dibangun oleh Dirjen SDA Kementerian PUPR dan sumur bor masyarakat di daerah pesisir Kecamatan Marangkayu, apakah memenuhi persyaratan Permenkes RI No.32 Tahun 2017 tentang Standar Baku Mutu Kesehatan Lingkungan dan Persyaratan Kesehatan Air untuk Keperluan Higiene Sanitasi. Hasil penelitian menunjukkan bahwa air sumur bor pemerintah dan air sumur bor masyarakat memenuhi baku mutu sesuai dengan Permenkes RI No. 32 Tahun 2017, kecuali kandungan E. Coli dan Total Coliform yang cukup tinggi melebihi baku mutu hasil pemeriksaan sampel air.
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2020-05-29
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/912
JURNAL KIMIA MULAWARMAN; Vol 17 No 2 (2020); 94-97
JURNAL KIMIA MULAWARMAN; Vol 17 No 2 (2020); 94-97
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/912/607
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/60
2017-09-02T13:19:25Z
JKM:ART
ISOLASI DAN IDENTIFIKASI SENYAWA STEROID DARI KULIT BATANG TUMBUHAN ANDONG (Cordyline fructicosa [L] A. Cheval)
Aisya, Annisa
Purba, Ritson
Sitorus, Saibun
The isolation of steroid compounds from the bark of Andong plant (Cordyline fructicosa [L] A. Cheval) that come from Samarinda have been done. Their air-dried powdered from bark of Andong plant (Cordyline fructicosa [L] A. Cheval) (250 gram) were extracted by methanol at room temperature (27oC) and fractioned with n-hexane-water (1:1). Separation of steroid compounds in n-hexane fraction by column chromatography with silica gel 60 (35-70 mesh) based on the Isocratic method and produce six fractions, that fractions were 1, 2, 3, 4, 5 and 6 fractions. Fraction 3 gave a blue fluorescent staining that was observed after under UV light and with the Lieberman Burchard produces a green stain, then the fraction 3 was tested for steroid and produces a blue color indicates a positive steroid that has a yield of 0.0536 gram. Purification of the fraction 3 produces greenish-yellow crystals with Rf value of 0.72 with eluent chloroform (100%) while the value of Rf in n-hexane = 0.68 and Rf in ethyl acetate = 0.42. the UV-Vis spectrum of the crystalline isolate results provide absorption at wavelenght of 252 nm, 263 nm and 334 nm. While the result of FT-IR spectrum gives absorption at wave numbers: 689.63; 768.03; 800.79; 901.81; 977.32; 1052.32; 1201.45; 1273.35; 1358.76; 1463.11; 1662.32; 2853.02; 2926.19; 3056.42 and 3456.33. The bark of Andong plant (Cordyline fructicosa [L] A. Cheval) contains steroid compounds.Keywords: Andong (Cordyline fructicosa [L] A. Cheval), Steroid, Isocratic, Isolation
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2016-01-26
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/60
JURNAL KIMIA MULAWARMAN; Vol 9 No 2 (2012)
JURNAL KIMIA MULAWARMAN; Vol 9 No 2 (2012)
2476-9258
1693-5616
ind
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/60/61
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/491
2023-03-26T10:18:08Z
JKM:ART
Isolasi Senyawa Kimia Stigmastan-3,5-Diena Yang Mempunyai Daya Toksik Dari Daun Ekaliptus (Eucalyptus Deglupta Blume.)
Setianingsih, Sari
Kartika, Rudi
Simanjuntak, Partomuan
This study was started by extraction of Eucalyptus deglupta Blume. Using organic solvent (n-hexane, ethyl acetate, ethanol and water) followed by phytochemical screening and toxicity test using Brine Shrimp Lethality Test (BSLT) method. Isolation and identification of chemical compounds contained in the fraction were done by column chromatography and Gas Chromatography-Mass Spectrometry (GC-MS) analysis. Phytochemical screening revealed the presence of alkaloids, flavonoids, steroids and phenolics in the extract. Toxicity test results showed that the ethyl acetate extract was potentially active with LC50 value of 617.95 ppm. The extract was continued to isolation stage and gave fraction EKEA-3.1 with LC50 value of 2759.93 ppm. Identification of chemical compounds in EKEA-3.1 with KG-MS analysis showed that EKEA-3.1 was suspected to be Stigmastan-3,5-diene.
Pada penelitian ini dilakukan ekstraksi serbuk daun ekaliptus (Eucalyptus deglupta Blume.) dengan metode maserasi menggunakan pelarut organik yaitu n-heksana, etil asetat, etanol dan air kemudian dilanjutkan dengan uji skrining fitokimia dan uji toksisitas terhadap larva udang dengan metode Brine Shrimp Lethality Test (BSLT). Isolasi menggunakan kromatografi kolom dan identifikasi senyawa kimia yang terdapat dalam fraksi menggunakan Kromatografi Gas-Spektrometri Massa (KG-MS). Hasil uji skrining fitokimia dalam ekstrak mengandung senyawa metabolit sekunder alkaloid, flavonoid, steroid dan fenolik. Hasil uji toksisitas menunjukkan bahwa ekstrak etil asetat berpotensi aktif dengan nilai LC50 sebesar 617,95 ppm. Ekstrak tersebut dilanjutkan ke tahap isolasi dan diperoleh isolat EKEA-3.1 dengan nilai LC50 sebesar 2759,93 ppm. Hasil identifikasi senyawa kimia pada isolate EKEA-3.1 dengan analisis KG-MS menunjukkan senyawa kimia yang diduga terdapat dalam ekstrak etil asetat daun ekaliptus (Eucalyptus deglupta Blume.) adalah senyawa Stigmastan-3,5-diena.
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2017-11-29
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/491
10.30872/jkm.v15i1.491
JURNAL KIMIA MULAWARMAN; Vol 15 No 1 (2017); 1-4
JURNAL KIMIA MULAWARMAN; Vol 15 No 1 (2017); 1-4
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/491/316
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/901
2023-11-30T16:35:42Z
JKM:ART
Acute Toxicity Test Of P-Metoxicynamic Acid Synthetic From Ethyl P-Methysicynamate
UJI TOKSISITAS AKUT SENYAWA ASAM p-METOKSISINAMAT YANG DISINTESIS DARI ETIL p-METOKSISINAMAT
Nurmala, Sara
Zahara, Indah
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.
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2022-05-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/901
10.30872/jkm.v19i2.901
JURNAL KIMIA MULAWARMAN; Vol 19 No 2 (2022); 76-80
JURNAL KIMIA MULAWARMAN; Vol 19 No 2 (2022); 76-80
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/901/744
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/20
2015-12-18T06:38:23Z
JKM:ART
ANALISA Pb 2+ PADA LOBSTER (Panulirus sp) DENGAN METODE ADISI STANDAR SPEKTROFOTOMETER UV-VIS MENGGUNAKAN PENGOMPLEKS DITIZON
Yusuf, Bohari
-, Alimuddin
Nurliana, Siti
Telah dilakukan penelitian tentang analisa Pb(II) pada lobster (Panulirus sp) dengan metode adisi standar spektrofotometer UV-Vis menggunakan pengompleks ditizon. Penelitian ini bertujuan untuk mengetahui kadar ion logam Pb(II) pada lobster (Panulirus sp) dengan metode adisi standar menggunakan pengompleks ditizon. Analisa kadar ion.logam Pb(II) dengan pengompleks ditizon menggunakan spektrofotometer uv-vis sebelum menggunakan metode adisi standar. Hasil penelitian menunjukkan bahwa kadar ion logam Pb(II) sebesar 0,215 ppm sedangkan pada penelitian menggunakan metode adisi standar kadar Pb(II) sebesar 1,210 ppm.Kata Kunci: Lobster, Adisi Standar, Ditizon, Ion logam Pb(II).
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2015-12-18
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/20
JURNAL KIMIA MULAWARMAN; Vol 11 No 2 (2014)
JURNAL KIMIA MULAWARMAN; Vol 11 No 2 (2014)
2476-9258
1693-5616
ind
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/20/27
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/667
2023-06-20T02:04:26Z
JKM:ART
VALIDATION OF THE METHODS OF Hg DETERMINATION ON WASTE WATER TREATMENT PLANT SAMPLES USING COLD VAPOUR-ATOMIC ABSORPTION SPECTROPHOTOMETER (CV-AAS)TECHNIQUES
validasi
anggraini, Rika
Hairani, Rita
Panggabean, Aman Sentosa
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.
Penelitian tentang validasi metode penentuan merkuri pada sampel waste water treatment plant (WWTP) dari PT. LNG Badak Bontang, Kalimantan Timur dengan menggunakan teknik bejana uap dingin spektrofotometer serapan atom (CV-AAS) telah dilakukan. Untuk memperoleh hasil pengukuran yang valid, telah dilakukan pengukuran beberapa parameter yang berpengaruh dalam validasi metode. Hasil penelitian menunjukkan larutan SnCl2 20% dapat digunakan sebagai reduktor. Kinerja analitik pengukuran yang diperoleh sangat baik, ditunjukkan dengan nilai linearitas (r) ≥ 0,995; LOD sebesar 0,2530 ppb, LOQ sebesar 0,8432 ppb, MDL sebesar 0,6427 ppb, pengulangan dan kebolehulangan dinyatakan sebagai %RSD < 2/3 nilai KV Horwitz. Keakuratan metode ini sangat baik dengan nilai presentase perolehan kembali sebesar 114,88%. Berdasarkan hasil penelitian ini, metode CV-AAS dapat digunakan dalam penentuan Hg pada sampel WWTP dengan hasil yang valid.
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2018-11-29
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/667
10.30872/jkm.v16i1.667
JURNAL KIMIA MULAWARMAN; Vol 16 No 1 (2018); 10-15
JURNAL KIMIA MULAWARMAN; Vol 16 No 1 (2018); 10-15
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/667/458
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/905
2020-02-16T16:11:48Z
JKM:ART
MODIFIKASI KARET ALAM SIKLIS DENGAN KOMONOMER MALEAT ANHIDRAT DAN ASAM OLEAT MELALUI METODE PENCANGKOKKAN DENGAN TEKNIK REFLUKS MENGGUNAKAN INISIATOR BENZOIL PEROKSIDA
Ritonga, Ahmad Hafizullah
Aritonang, Barito
Siahaan, Maniur Arianto
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.
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2019-11-29
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/905
JURNAL KIMIA MULAWARMAN; Vol 17 No 1 (2019); 37-44
JURNAL KIMIA MULAWARMAN; Vol 17 No 1 (2019); 37-44
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/905/564
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/44
2017-12-15T04:01:27Z
JKM:ART
ANALISIS KAFEIN DALAM KOPI ROBUSTA (TORAJA) DAN KOPI ARABIKA (JAWA) DENGAN VARIASI SIKLUS PADA SOKLETASI
Rizky, Tria Annisa
Saleh, Chairul
-, Alimuddin
The research about analysis of caffeine content on coffee Robusta (Toraja) and coffee Arabika (Jawa) with cycle variations using spectrophotometer UV has been done. Coffee extract obtained throughsoxhletation with ethanol 96 % and variation cycles used is 3, 6, 9, 12 and 15, tested with spectrophotometer UV at a wavelength of 272 nm. The result of this research was obtained the caffeine content in coffee Robusta (Toraja) for 3, 6, 9, 12, 15 cycles consecutive is 1.439 mg/L, 2.158 mg/L, 2.695 mg/L, 2.887 mg/L and 3.700 mg/L. The caffeine content obtained coffee Arabika (Jawa) for 3, 6, 9, 12, 15 cycles consecutive is 0.474 mg/L, 0.478 mg/L, 1.056 mg/L, 1.540 mg/L and 1.926 mg/L respectively.Keywords: Coffee Robusta, Coffee Arabika, Ethanol 96 %, Soxhletation, Caffeine, Spectrophotometer UV
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2016-01-19
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/44
JURNAL KIMIA MULAWARMAN; Vol 13 No 1 (2015)
JURNAL KIMIA MULAWARMAN; Vol 13 No 1 (2015)
2476-9258
1693-5616
ind
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/44/50
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/1127
2023-11-30T15:52:31Z
JKM:ART
Antifeedaant Compound From Daruju Leaves (Acanthus Ilicifolius Linn) Against Eggplant Leaves Beetle (Epilachna Sparsa)
Mariadi, Ade
Widiyantoro, Ari
Sayekti, Endah
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.
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2022-12-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1127
10.30872/jkm.v20i1.1127
JURNAL KIMIA MULAWARMAN; Vol 20 No 1 (2022); 47-50
JURNAL KIMIA MULAWARMAN; Vol 20 No 1 (2022); 47-50
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1127/773
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/11
2017-12-15T04:02:05Z
JKM:ART
ANALISIS TOTAL SULFUR TERHADAP SAMPEL FEED GAS DENGAN MEMBANDINGKAN STANDAR GAS DAN STANDAR LIQUID MENGGUNAKAN METODE TS-100V
Haryanto, Eko
Gunawan, Rahmat
Saleh, Chairul
The total sulfur analysis in the feed gas sample by using standard gas and liquid has been researched. The concentration of total sulfur obtained from a calibration curve by using standard gas or liquid by TS - 100V. Based on the analysis of measurement linearity, by making curve a linearity from a standard gas H 2 S was 0.999 and standard liquid dibutyl sulfide was 0.998, where both the standard curve can be as a calibration curve because each the value of the correlation coefficient (r) having worth >0.995. Based on the analysis of measurement precision namely repeatability by measuring a feed gas sample train G as many as 5 times been gained. RSD value was 4.17 in standard gas and 4.70 in standard liquid. Both the calibration curve has been accepted because the relative standard deviation values less than 0.67 from Horwitz and still into get allowed range values from 7.3 to 11%. Based on the analysis of accuracy’s measurement is percent recovery for the standard gas was 100.578% and for standard liquid was 104.380%. Both of them has been accepted because it still fit in the allowed range values 80-110%.Keywords : Total Sulfur, H 2 S Standard Gas, Standard Liquid Dibutyl Sulphites and TS-100V
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2015-11-19
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/11
JURNAL KIMIA MULAWARMAN; Vol 12 No 1 (2014)
JURNAL KIMIA MULAWARMAN; Vol 12 No 1 (2014)
2476-9258
1693-5616
ind
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/11/17
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/259
2017-12-15T04:00:55Z
JKM:ART
Uji Fitokimia, Toksisitas dan Aktivitas Antioksidan Fraksi n-heksan dan Etil Asetat terhadap Ekstrak Jahe Merah (Zingiber officinale var. amarum)
Kaban, Alpina Nora
Tarigan, Daniel
Saleh, Chairul
Zingiber officinale var. amarum., phytochemical, Brine Shrimp Lethality Test (BSLT), antioxidants, DPPH.
Has conducted research on the phytochemical test, toxicity test and test the antioxidant activity of the fraction of n-hexane and ethyl acetate to extract red ginger (Zingiber officinale amarum var.). The dried leaves weighing 382 grams, was macerated using methanol, filtered and concentrated by rotary evaporator. Then the total extract of red ginger in fractionation with n-hexane and ethyl acetate. Based on the test results of secondary metabolites phytochemical extracts of total red ginger (Zingiber officinale var amarum.) Are alkaloids, flavonoids, triterpenoids and phenolic. N-hexane fraction contains alkaloids, flavonoids, steroids, triterpenoids and phenolic. Ethyl acetate fractions contain alkaloids, flavonoids, triterpenoids and phenolic. Toxicity test showed the mortality rate of shrimp larvae Artemia salina Leach using Probit Analysis SAS (Statistical Analysis System) to determine the value of 50% Lethal Concentration (LC50), showed that the fraction of n-hexane toxicity with LC50 values of 63.8130 ppm; extracts of total was 71.0121 ppm and ethyl acetate was 3821.89 ppm. Test the antioxidant activity using DPPH free radical reduction in the spectrophotometer and IC50 values obtained on a total extract was 32.19 ppm; n-hexane was fraction 35.63 ppm; and ethyl acetate fraction was 25.69 ppm.
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2016-11-08
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/259
JURNAL KIMIA MULAWARMAN; Vol 14 No 1 (2016)
JURNAL KIMIA MULAWARMAN; Vol 14 No 1 (2016)
2476-9258
1693-5616
ind
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/259/274
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/1007
2023-11-30T16:34:31Z
JKM:ART
Determination of Total Antioxidant and Phenolic Content from Malvaceae Family Leaves Infusion by Spectrophotometry
Yefrida, Yefrida
Susanti, Silvia Detri
Refilda, Refilda
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.
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2023-11-22
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1007
10.30872/jkm.v21i1.1007
JURNAL KIMIA MULAWARMAN; Vol 21 No 1 (2023); 1-7
JURNAL KIMIA MULAWARMAN; Vol 21 No 1 (2023); 1-7
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1007/907
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/884
2023-11-30T16:35:42Z
JKM:ART
UTILIZATION OF COFFEE GROUNDS AS ACTIVATED CARBON FOR RHODAMINE B ADSORBENT
PEMANFAATAN AMPAS KOPI SEBAGAI ARANG AKTIF UNTUK ADSORBEN RHODAMIN B
Anggriani, Evifania Juvita
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
Penelitian tentang pemanfaatan arang aktif ampas kopi sebagai adsorben untuk mengurangi kandungan pewarna Rhodamin B telah dilakukan. Arang aktif yang digunakan diaktivasi secara kimia dengan perendaman menggunakan larutan H3PO4 1 M selama 24 jam kemudian dibakar pada suhu 500ËšC selama 45 menit, sedangkan aktivasi secara fisika dilakukan dengan pembakaran pada suhu 500ËšC selama 45 menit. Hasil penelitian menunjukkan karakteristik yang mengacu pada SNI 06-3730-1995, kondisi optimum adsorpsi Rhodamin B pada kedua arang aktif adalah pada pH 7 dan waktu kontak 15 menit. Isoterm adsorpsi Rhodamin B pada arang aktif teraktivasi secara kimia dan fisika mengikuti model isoterm adsorpsi Langmuir dengan kapasitas adsorpsi maksimum masing-masing adalah 1,6943 mg/g dan 1,5936 mg/g. Arang aktif ampas kopi teraktivasi secara kimia dan fisika diaplikasikan untuk menurunkan Rhodamin B dari limbah kain sarung di Samarinda. Penurunan kadar Rhodamin B dalam 25 mL sampel limbah yang mengandung Rhodamin B 14,1860 mg/g dengan 1 gram adsorben masing-masing adalah 89,1125% dan 60,7923%.
Kata Kunci: Arang Aktif, Ampas Kopi, Rhodamin B, Adsorpsi
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2020-11-27
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/884
10.30872/jkm.v18i1.884
JURNAL KIMIA MULAWARMAN; Vol 18 No 1 (2020); 22-29
JURNAL KIMIA MULAWARMAN; Vol 18 No 1 (2020); 22-29
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/884/597
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/81
2017-09-02T13:19:17Z
JKM:ART
ISOLASI SENYAWA ALKALOID DARI DAUN SIDAGURI (Sida rhombifolia L.)
Lenny, Sovia
Barus, Tonel
S, Evi Yoana
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
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2016-02-24
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/81
JURNAL KIMIA MULAWARMAN; Vol 8 No 1 (2010)
JURNAL KIMIA MULAWARMAN; Vol 8 No 1 (2010)
2476-9258
1693-5616
ind
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/81/80
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/1012
2023-03-26T10:16:42Z
JKM:ART
STUDI KOMPUTASI INTERAKSI ZEOLIT LTA (LINDE TYPE A) DENGAN KATION ALKALI (LI+, NA+, K+) MENGGUNAKAN METODE MEKANIKA MOLEKULER
Iswaradi, Audi Zahid
Gunawan, Rahmat
Hindryawati, Noor
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.
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2021-11-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1012
10.30872/jkm.v19i1.1012
JURNAL KIMIA MULAWARMAN; Vol 19 No 1 (2021); 24-29
JURNAL KIMIA MULAWARMAN; Vol 19 No 1 (2021); 24-29
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1012/704
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/1
2023-03-21T02:23:57Z
JKM:ART
UJI FITOKIMIA, TOKSISITAS DAN AKTIVITAS ANTIBAKTERI EKSTRAK BERBAGAI FRAKSI DAUN MARA (Macaranga tanarius (L.) M.A) TERHADAP BAKTERI Staphylococcus aureus dan Escherichia coli
UJI FITOKIMIA, TOKSISITAS DAN AKTIVITAS ANTIBAKTERI EKSTRAK BERBAGAI FRAKSI DAUN MARA (Macaranga tanarius (L.) M.A) TERHADAP BAKTERI Staphylococcus aureus dan Escherichia coli
Sari, Ana Arum
Saleh, Chairul
-, Erwin
Kimia, Kimia Bahan Alam
(Macaranga tanarius (L.) M.A), phytochemical test, Antibacteria activity test and LC 50 .
Phytochemical, toxicity and antibacterial activity tests of total extract, fractions of n-heksana, ethyl acetate and ethanol-water from mara leaf (Macaranga tanarius (L.) M.A) from Samboja, East Kalimantan has been carried out. Based on the secondary metabolites phytochemical test of the (Macaranga tanarius (L.) M.A) leaf show that total extract is contain alkaloid, flavonoid, phenolic and steroid. n-hexane fraction is contain alkaloid, flavonoid and steroid. Ethyl acetate fraction is contain phenolic and triterpenoid. Ethanol-water fraction is contain alkaloid and phenolic. Brine shrimp lethality test values obtained Lethal Concentration 50 % (LC50) total extract 23.99 ppm , n-heksana fraction 13,93 ppm, ethyl acetate fraction 468,25 ppm and ethanol-water fraction 283,67 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 0,125- 0,5 % (b/v) which clear zone diameter was 7,25 mm on Staphylococcus aureus bacteria and 6,25 mm on Escherichia coli bacteria.
Phytochemical, toxicity and antibacterial activity tests of total extract, fractions of n-heksana, ethyl acetate and ethanol-water from mara leaf (Macaranga tanarius (L.) M.A) from Samboja, East Kalimantan has been carried out. Based on the secondary metabolites phytochemical test of the (Macaranga tanarius (L.) M.A) leaf show that total extract is contain alkaloid, flavonoid, phenolic and steroid. n-hexane fraction is contain alkaloid, flavonoid and steroid. Ethyl acetate fraction is contain phenolic and triterpenoid. Ethanol-water fraction is contain alkaloid and phenolic. Brine shrimp lethality test values obtained Lethal Concentration 50 % (LC50) total extract 23.99 ppm , n-heksana fraction 13,93 ppm, ethyl acetate fraction 468,25 ppm and ethanol-water fraction 283,67 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 0,125- 0,5 % (b/v) which clear zone diameter was 7,25 mm on Staphylococcus aureus bacteria and 6,25 mm on Escherichia coli bacteria.
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
Universitas Mulawarman
2015-09-22
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1
JURNAL KIMIA MULAWARMAN; Vol 12 No 2 (2015); 53-58
JURNAL KIMIA MULAWARMAN; Vol 12 No 2 (2015); 53-58
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1/4
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/206
2018-03-19T05:53:03Z
JKM:ART
Aktivitas Antioksidan Senyawa Flavonoid Dari Macaranga pearsonii Merr.
AKTIVITAS ANTIOKSIDAN SENYAWA FLAVONOID DARI Macaranga pearsonii Merr.
Marliana, Eva
Tjahjandarie, Tjitjik Srie
Tanjung, Mulyadi
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.
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.
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2016-06-14
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/206
JURNAL KIMIA MULAWARMAN; Vol 13 No 2 (2016)
JURNAL KIMIA MULAWARMAN; Vol 13 No 2 (2016)
2476-9258
1693-5616
ind
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/206/181
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/772
2023-12-02T14:30:49Z
JKM:ART
LARVICIDE EFFECT OF TAGETES ERECTA EXTRACT HEXANE AND ACETONE FRACTION ON INSTAR 3 AND 4 AEDES AEGYPTI MOSQUITO LARVAE
Efek Larvasida Ekstrak Tegates erecta Fraksi Heksan dan Aseton terhadap Larva Nyamuk Aedes aegypti Instar 3 dan 4
Aminu, November Rianto
Soetjipto, Hartati
Kristijanto, A Ign
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
Resistensi terhadap temephos sebagai larvasida nyamuk A. aegypti telah terjadi di Indonesia. Oleh karena itu, dirasa perlu mencari senyawa aktif lain yang dapat berperan sebagai larvasida, namun juga harus ramah lingkungan. Penelitian ini menggunakan ekstrak daun dan akar T. erectafraksi heksan dan aseton sebagai larvasida. Proses diawali dengan pengeringan dan ekstraksi sampel (daun dan akar T. erecta) masing – masing dengan pelarut heksan dan aseton. Dibuat larutan uji dengan konsentrasi 0, 0,0075, 0,015, 0,03, dan 0,1 % (b/v) dari ekstrak yang dihasilkan. Uji larvasida dilakukan mengacu pada WHOPES dengan mengamati mortalitas larva instar 3 dan 4 pada masing – masing ekstrak. Hasil yang diperoleh menunjukan persen mortalitas larva bertambah seiring dengan bertambahnya konsentrasi dan waktu paparan pada kedua jenis larva. LC50terendah diperoleh dari ekstrak akar fraksi heksan (37 ppm) untuk larva instar 3 dan fraksi aseton (61 ppm) untuk larva instar 4.
Kata kunci: Larva,A. aegypti, T. erecta. Fraksi
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2023-05-23
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/772
10.30872/jkm.v20i2.772
JURNAL KIMIA MULAWARMAN; Vol 20 No 2 (2023); 64-69
JURNAL KIMIA MULAWARMAN; Vol 20 No 2 (2023); 64-69
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/772/774
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/35
2017-12-15T04:01:27Z
JKM:ART
ANALISIS PERUBAHAN KADAR LOGAM TEMBAGA (Cu) PADA PENAMBAHAN ION PERAK (Ag) DENGAN METODE ELEKTROKOAGULASI
Pratiwi, Agustin
Yusuf, Bohari
Gunawan, Rahmat
The analysis of changes in levels of copper (Cu) on the addition of silver ions (Ag) with electrocoagulation method has been researched by using Atomic Absorption Spectrophotometer (AAS) as an instrument for the determination of levels. The addition of ionic silver (Ag) in a solution of copper (Cu) using varying concentrations of silver (Ag) 4, 6, 8, 10 and 12 ppm. The results showed that the effect of the addition of ionic silver (Ag) 4,6, 8, 10 and 12 resulted in changes in the levels of copper (Cu) are deposited successively in the ppm concentration is 9.375; 9.324; 9.272; 9.168; 9.142 and 9.116. Metalcontentof silver(Ag) in a medium containing copper (Cu) with a variety of metallic silver( Ag) differentat 4, 6, 8, 10 and 12ppm after the electrocoagulation metal contentof silver(Ag) depositedin the amount3.99; 5.99; 7.96; 9.91 and 11.88ppm.
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2016-01-19
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/35
JURNAL KIMIA MULAWARMAN; Vol 13 No 1 (2015)
JURNAL KIMIA MULAWARMAN; Vol 13 No 1 (2015)
2476-9258
1693-5616
ind
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/35/41
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/435
2018-03-16T08:27:31Z
JKM:ART
Isolasi Dan Identifikasi Senyawa Metabolit Sekunder Dari Fraksi Etil Asetat Pada Daun Berwarna Merah Pucuk Merah (Syzygium myrtifolium walp.)
ISOLASI DAN IDENTIFIKASI SENYAWA METABOLIT SEKUNDER DARI FRAKSI ETIL ASETAT PADA DAUN BERWARNA MERAH PUCUK MERAH (Syzygium myrtifolium walp.).
Wati, Mila
Erwin, Erwin
Tarigan, Daniel
The study aims to find secondary metabolites isolated from leave of pucuk merah (Syzygium Myrtifilium Walp). The method used is maceration, fractionation, column chromatography, thin layer chromatography and identified using Fourier Transform-Infra Red (FT-IR) and Gass Cromatography-Mass Spectroscopy (GC-MS). Phytochemical preliminary test of ethyl acetate fraction contained alkaloids, flavonoids, phenolic and triterpenoids, while the results of phytochemical test against stains 2 ethyl acetate fraction showed a positive test result contains the alkaloid compounds and compounds phenolic. The results of the analysis using cluster bonding FT-IR emergence OH (Hydroksi), C-H (Aromatic), CH3 (Aliphatic), and CO Ether, whereas the MS chromatograms obtained peak (peak) which have a similarity value above 90% according to willey09th.L database. estimates of the results of the analysis can be concluded that the stain 2 ethyl acetate fraction is estimated compound 2,4-di-tersier-butyl-fenol.
ABSTRACT
The study aims to find secondary metabolites isolated from leave of pucuk merah (Syzygium Myrtifilium Walp). The method used is maceration, fractionation, column chromatography, thin layer chromatography and identified using Fourier Transform-Infra Red (FT-IR) and Gass Cromatography-Mass Spectroscopy (GC-MS). Phytochemical preliminary test of ethyl acetate fraction contained alkaloids, flavonoids, phenolic and triterpenoids, while the results of phytochemical test against stains 2 ethyl acetate fraction showed a positive test result contains the alkaloid compounds and compounds phenolic. The results of the analysis using cluster bonding FT-IR emergence OH (Hydroksi), C-H (Aromatic), CH3 (Aliphatic), and CO Ether, whereas the MS chromatograms obtained peak (peak) which have a similarity value above 90% according to willey09th.L database. estimates of the results of the analysis can be concluded that the stain 2 ethyl acetate fraction is estimated compound 2,4-di-tersier-butyl-fenol.
Keywords: Secondary metabolites, Isolation dan fractionation, leave of pucuk merah (Syzygium Myrtifilium Walp.), 2,4-di-tersier-butyl-fenol.
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2017-05-29
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/435
JURNAL KIMIA MULAWARMAN; Vol 14 No 2 (2017); 100-107
JURNAL KIMIA MULAWARMAN; Vol 14 No 2 (2017); 100-107
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/435/309
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/665
2023-06-20T02:05:36Z
JKM:ART
SYNTHESIS AND PRELIMINARY EVALUATION OF 3,3’-DIHYDROXY-4,4’-DIMETHOXYDIBENZYLIDENEACETONE AS SUNSCREEN AND ANTIOXIDANT ACTIVE COMPOUND
Sintesis dan Uji Senyawa 3,3’-dihidroksi-4,4’-dimetoksidibenzilidenaseton sebagai Bahan Aktif Tabir Surya dan Antioksidan
Harizal, Harizal
Hidayanto, Ariyo Prabowo
Sari, Nindya Wulan
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.
Sintesis dan uji senyawa 3,3’-dihidroksi-4,4’-dimetoksidibenzilidenaseton (DDB) sebagai senyawa aktif tabir surya dan antioksidan telah berhasil dilakukan. Senyawa ini disiapkan melalui reaksi kondensasi terkatalisis asam antara vanilin dan aseton menggunakan katalis larutan HCl jenuh dalam asam asetat glasial. Pengujian senyawa tabir surya yang dilakukan berupa penentuan profil serapan elektronik senyawa hasil sintesis, lamdamaks, e, lamda c, rasio UVA/UVB, rasio UVA/UVB, dan fotostabilitas. Adapun uji aktivitas antioksidan dilakukan dengan metode penangkapan radikal DPPH. Berdasarkan hasil yang diperoleh, senyawa yang diperoleh memiliki efek perlindungan yang sangat baik pada daerah UVA dengan aktivitas antioksidan yang tinggi.
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2018-11-29
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/665
10.30872/jkm.v16i1.665
JURNAL KIMIA MULAWARMAN; Vol 16 No 1 (2018); 49-59
JURNAL KIMIA MULAWARMAN; Vol 16 No 1 (2018); 49-59
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/665/465
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/609
2023-06-20T02:08:08Z
JKM:ART
SINTESIS SURFAKTAN TURUNAN AMIDA YANG DIPEROLEH DARI REKASI METIL RISINOLEAT DAN ETILENDIAMINA
Tarigan, Daniel
Agustina, Magdaleni Rahayu
Kosenarpadi, Soerja
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
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2018-05-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/609
10.30872/jkm.v15i2.609
JURNAL KIMIA MULAWARMAN; Vol 15 No 2 (2018); 94-98
JURNAL KIMIA MULAWARMAN; Vol 15 No 2 (2018); 94-98
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/609/418
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/531
2017-12-27T06:16:15Z
JKM:ART
FRONT MATTER
Mulawarman, Jurnal Kimia
FRONT MATTER
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2017-12-27
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/531
JURNAL KIMIA MULAWARMAN; Vol 15 No 1 (2017)
JURNAL KIMIA MULAWARMAN; Vol 15 No 1 (2017)
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/531/332
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/1195
2023-02-13T13:36:53Z
JKM:FM
Front Matter
Mulawarman, Jurnal Kimia
FRONT MATTER include Cover, Indexing and Editorial Boar
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2022-05-31
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Front Matter
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1195
JURNAL KIMIA MULAWARMAN; Vol 18 No 2 (2021)
JURNAL KIMIA MULAWARMAN; Vol 18 No 2 (2021)
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1195/739
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/25
2016-01-13T18:05:43Z
JKM:ART
ISOLASI DAN IDENTIFIKASI SENYAWA FLAVONOID DARI DAUN TUMBUHAN KEREHAU (Callicarpa longifolia Lam.)
Pasaribu, Subur P
-, Erwin
Istiyanti, Putri
The flavonoid had been isolated from ethyl acetate extract of Kerehau leaf (Callicarpa longifolia Lam.). Extraction was done by maceration and fraction method. Isolation of pure compound was done by chromatographic flash coloumn. The resulted of isolated flavonoid was yellow greeness powder and 174-178°C melting point. Based on data IR can be conclude that isolated compound is flavonol group. Effect of toxicity from isolate identified with presentage of prawn larva (BSLT method) and counted by probit analysis (LC 50 ). The results of this test showed that the the isolate was very toxic with LC 50 value of 26,8824 ppm.
Keywords: Kerehau (Callicarpa longifolia Lam.), Isolation, Flavonoid, BSLT
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2014-05-14
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/25
JURNAL KIMIA MULAWARMAN; Vol 11 No 2 (2014)
JURNAL KIMIA MULAWARMAN; Vol 11 No 2 (2014)
2476-9258
1693-5616
ind
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/25/32
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/742
2023-03-26T10:13:45Z
JKM:ART
Validasi Metode Penentuang Minyak dan Lemak dalam air Laut dengan Spektrofotometri Inframerah
Samban, Gaisandry Devira
Validation research method of determining oil and grease in sea water with Infrared Spectrophotometry has been conducted. To obtain valid measurement results, the research stages included measurements in the form of validation parameters such as linearity test, limit detection (LOD), quantization limit (LOQ), recovery, precision, reproducibility, detection limit of method (MDL), instrument validation and measurement uncertainty. The results showed that linearity met the good results with a correlation coefficient (R2) ≥ 0.995; LOD is 0.1 mg/L, LOQ is 0.5 mg/L, % recovery with a range of(104,59 ± 1,73)%; repetition and reproducibility was expressed as % SBR <% KV Horwitz, MDL is 0.2745 mg/L. Based on the results of this study, infrared spectrophotometry methods can be used in determining oil and fat in seawater samples with valid results.
Keywords: method validation, oil and greace, infrared spectrophotometry.
Penelitian validasi metode penentuan minyak dan lemak dalam air laut dengan Spektrofotometri Inframerah telah dilakukan. Untuk mendapatkan hasil pengukuran yang valid, maka dilakukan tahapan penelitian meliputi pengukuran berupa parameter validasi seperti uji linieritas, limit deteksi (LOD), limit kuantisasi (LOQ), recovery, presisi, reproducibility, batas deteksi metode (MDL), validasi instrumen serta ketidakpastian pengukuran. Hasil penelitian menunjukkan pengukuran linieritas memenuhi hasil baik dengan koefisien korelasi (R2) ≥ 0,995; LOD sebesar 0,1 mg/L, LOQ sebesar 0,5 mg/L, % recovery dengan rentang (104,59 ± 1,73)%; pengulangan dan reproducibility dinyatakan sebagai %SBR < % KV Horwitz, MDL sebesar 0,2745 mg/L. Berdasarkan hasil penelitian ini, metode spektrofotometri inframerah dapat digunakan dalam penentuan minyak dan lemak pada sampel air laut dengan hasil yang valid.
Kata kunci: Validasi metode, minyak dan lemak, spektrofotometri inframerah
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2021-05-31
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/742
10.30872/jkm.v18i2.742
JURNAL KIMIA MULAWARMAN; Vol 18 No 2 (2021); 90 - 96
JURNAL KIMIA MULAWARMAN; Vol 18 No 2 (2021); 90 - 96
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/742/683
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/692
2021-01-27T09:50:23Z
JKM:ART
PEMBUATAN SURFAKTAN BERBAHAN DASAR MINYAK BIJI MAHONI Swietenia macrophylla King DENGAN DIETANOLAMINA
Oktaviani, Catur
Daniel, Daniel
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
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2020-05-29
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/692
JURNAL KIMIA MULAWARMAN; Vol 17 No 2 (2020); 61-67
JURNAL KIMIA MULAWARMAN; Vol 17 No 2 (2020); 61-67
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/692/602
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/56
2017-09-02T13:19:30Z
JKM:ART
STUDI KOMPUTASI BERBASIS DFT TERHADAP FENOMENA QUANTUM TUNNELING DALAM ISOMERISASI METILHIDROKSIKARBENA
Awal, Jumaidil
Gunawan, Rahmat
Marliana, Eva
Density functional theory-based methods have been applied to predict the most possible one among the isomerizations of methylhydroxycarbene considering the probability of hydrogen tunneling occurrence. B3LYP/6-31+G(d,p) and M08-SO/6-31+G(d,p) methods were applied in all computations using GAMESS-US software. There were three steps of computation in this research. First, electronic structure computations of both equilibrium and transition compounds involved in all isomerization alternatives in order to obtain the optimum structures of the compounds. Second, vibrational computations of optimum transition structures to ensure that each of the respective structures is well on its potential energy surface. Third, tunneling analysis accomplished by intrinsic reaction coordinate (IRC) computatuins for all isomerization alternatives followed by tunneling probabilitycalculation using the Wentzel-Kramers-Brillouin (WKB) formula for methylhydroxycarbene isomerizations. The result of this research showed that the DFT methods successfully produced the optimum structure of each compound. Both DFT methods also successfully mapped all the intrinsic reaction coordinates. B3LYP/6-31+G(d,p) method gave tunneling probabilities of 3.55 x 10-19 for the isomerization into acetaldehyde and 3.30 x 10-20 for that into vinyl alcohol. While M08-SO/6-31+G(d,p) method gave tunneling probabilities of 2.38 x 10-23 for the isomerization into acetaldehyde and 4.79 x 10-23 for that into vinyl alcohol.Keywords: DFT, methylhydroxycarbene, hydrogen tunneling, isomerization
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2016-01-26
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/56
JURNAL KIMIA MULAWARMAN; Vol 9 No 2 (2012)
JURNAL KIMIA MULAWARMAN; Vol 9 No 2 (2012)
2476-9258
1693-5616
ind
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/56/57
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/875
2023-11-30T16:44:24Z
JKM:ART
SINTESIS SURFAKTAN DIETANOLAMIDA DARI METIL ESTER MINYAK BIJI BUNGA MATAHARI (Helianthus annuus. L) MELALUI REAKSI AMIDASI
Khsanah, Nur
Daniel, Daniel
Marliana, Eva
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.
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2019-05-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/875
10.30872/jkm.v16i2.875
JURNAL KIMIA MULAWARMAN; Vol 16 No 2 (2019); 83-89
JURNAL KIMIA MULAWARMAN; Vol 16 No 2 (2019); 83-89
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/875/525
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/16
2017-12-15T04:02:05Z
JKM:ART
UJI FITOKIMIA, TOKSISITAS DAN AKTIVITAS ANTIBAKTERI TERHADAP EKSTRAK ETANOL DAUN RAMBUSA (Passiflora foetida L.) TERHADAP BAKTERI Staphylococcus aureus DAN Escherichia coli
Y, Noviyanti
Pasaribu, Subur P
T, Daniel
Phytochemical tests were conducted, brine shrimp lethality test / BSLT and antibacterial activity test of the coarse extract and fractions from the Rambusa leaves (Passiflora foetida L.) derived from Samarinda, East Kalimantan. Rambusa leaf samples (Passifloa foetida L.) was extracted by ethanol, then concentrated using rotary evaporator. Then fractionated by using n-hexane and ethyl acetate solvent. According the test results, phytochemical compounds of secondary metabolites has contained alkaloids and steroidal compounds, triterpenoids. Within the antibacterial activity test using Staphylococcus aureus (Positive gram) and Escherichia coli (Negative Gram) using the discs method. This test using concentration in 1%, 5%, 10%, 15%, 20% resulted that the most active fraction is the fraction of n-hexane with minimum inhibitory rate was 1% and brine shrimp lethality test within concentration in 1000; 500; 250; 125; 62.5; 31.25; 15.625; 7,8125 ppm showing larval lethality of Artemia salina (L.) using SAS probit analysis to determine the value of Lethal Concentration 50% (LC 50 ). This test resulted that the most active fraction is the fraction of n-hexane with 133.7473 ppm of LC 50 values .Keywords : Passiflora foetida L. , phytochemical test , test antibacterial activity , bacterial and LC 50
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2014-11-24
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/16
JURNAL KIMIA MULAWARMAN; Vol 12 No 1 (2014)
JURNAL KIMIA MULAWARMAN; Vol 12 No 1 (2014)
2476-9258
1693-5616
ind
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/16/23
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/375
2018-03-12T05:46:05Z
JKM:ART
Uji Fitokimia, Toksisitas Serta Antioksidan Ekstrak Propolis Pembungkus Madu Lebah Trigona Incisa Dengan Metode 2,2-Diphenyl-1-Picrylhidrazyl (Dpph)
Thamrin, Aswin
-, Erwin
-, Syafrizal
Propolis, Trigona Incisa, Antioxidant Activity.
Phytochemical test, test the mortality of larvae shrimp (Brine Shrimp Lethality Test) and test the antioxidant activity of secondary metabolites extract of propolis Trigona Incisa been done. Based on the test results of phytochemical screening of secondary metabolites contained in propolis extracts showed that the crude extract contains phenolic compounds and alkaloids. Ethanol fraction containing alkaloids and phenolic compounds. Ethyl acetate fraction containing alkaloid compounds. Mortality of shrimp larvae test performed to determine the toxicity values propolis extract obtained values of 50% Lethal Concentration (LC50) at 249.6079 ppm for ethanol fraction as the most active fraction. Based on the test of antioxidant activity with DPPH values obtained Inhibition Concentration 50% (IC50) in the crude extract of 139.47 ppm ethanol, ethanol fraction at 109.44 ppm, 91.42 ppm ethyl acetate fraction and vitamin C amounted to 59.44 ppm , It can be stated that the most active fraction is the fraction of ethyl acetate with IC50 value of 91.42 ppm..
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2016-11-08
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/375
JURNAL KIMIA MULAWARMAN; Vol 14 No 1 (2016)
JURNAL KIMIA MULAWARMAN; Vol 14 No 1 (2016)
2476-9258
1693-5616
ind
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/375/280
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/1120
2023-11-30T15:54:01Z
JKM:ART
Uji Aktivitas Penghambatan Enzim α-Amilase dan Glukoamilase dari Ekstrak Etanol Daun Kirinyuh (Chromolaena odorata L.)
Gaspersz, Nelson
Fransina, Eirene Grace
Ngarbingan, Anancy Reza
Research has been carried out to test the inhibitory activity of α-amylase and glucoamylase enzymes in the ethanolic extract of kirinyuh (Chromolaena odorata L.) leaves. The use of kirinyuh leaf ethanol extract as a diabetes drug in vivo has been carried out, but its mechanism of action have never been researched before, so further research is needed on the specific mechanism of ethanolic extract of kirinyuh leaves in reducing blood sugar levels, especially through inhibition of α-amylase and glucoamylase enzymes in vitro. The purpose of this study was to test the antidiabetic activity of the ethanol extract of kirinyuh leaves in vitro using α-amylase and glucoamylase inhibition methods. This research uses DNS spectrophotometric method. The results showed that kirinyuh leaf ethanol extract proved to have inhibitory activity against α-amylase and glucoamylase enzymes with IC50 values of 3730.15 ± 28.91 ppm or 3730.15 ± 28.91 µg/mL and 2510.78. ± 383.37 ppm or 2510.78 ± 383.37 µg/mL. From the results, it can be concluded that the ethanolic extract of kirinyuh leaves has inhibitory activity against α-amylase and glucoamylase enzymes.
Telah dilakukan penelitian uji aktivitas penghambatan enzim α-amilase dan glukoamilase ekstrak etanol daun kirinyuh (Chromolaena odorata L.). Penggunaan ekstrak etanol daun kirinyuh sebagai obat diabetes secara in vivo telah dilakukan,tetapi belum diketahui mekanisme kerjanya, sehingga perlu dilakukan penelitian lebih lanjut mengenai mekanisme spesifik ekstrak etanol daun kirinyuh pada penurunana kadar gula darah terutama melalui aktivitas penghambatan terhadap enzim α-amilase dan glukoamilase secara in-vitro. Tujuan penelitian ini untuk untuk menguji aktivitas antidiabetes ekstrak etanol daun kirinyuh secara in vitro menggunakan metode penghambatan enzim α-amilase dan glukoamilase. Penelitian ini menggunakan metode DNS secara spektrofotometri. Hasil penelitian menunjukkan ekstral etanol daun kirinyuh terbukti memiliki aktivitas penghambatan terhadap enzim α-amilase dan glukoamilase dengan nilai IC50 masing-masing, yaitu sebesar 3730,15 ± 28,91 ppm atau 3730,15 ± 28,91 μg/mL dan 2510,78 ± 383,37 ppm atau 2510,78 ± 383,37 μg/mL. Dari hasil dapat disimpulkan bahwa ekstrak etanol daun kirinyuh memiliki aktivitas penghambatan terhadap enzim α-amilase dan glukoamilase.
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2022-05-31
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1120
10.30872/jkm.v19i2.1120
JURNAL KIMIA MULAWARMAN; Vol 19 No 2 (2022); 51-57
JURNAL KIMIA MULAWARMAN; Vol 19 No 2 (2022); 51-57
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1120/707
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/1288
2023-11-30T16:34:31Z
JKM:ART
Pengujian Toksisitas dan Antioksidan Ekstrak Etilasetat dan n-Butanol Hipokotil Sarang Semut, Myrmecodia pendens Merr. & Perry
Simanjuntak, Vino Soaduon Hamonangan
Wydiastuti, Endah
Marlina, Lina
Simanjuntak, Partomouan
Kartika, Rudi
Sarang semut, Myrmecodia pendens Merr. & Perry (Rubiaceae) is an epiphytic plant from Papua which is used to cure various diseases. The purpose of this study is to see the chromatogram profile [Thin Layer Chromatography (TLC) and High Performance Liquid Chromatography (HPLC)] analysis, and biological test of ethyl acetate and n-butanol of Sarang semut’s hypocotyl extracts from methanol extracts. Meanwhile, the biological tests carried out were toxicity tests on Artemia salina L shrimp larvae and antioxidant assay with free radical scavenging methods (DPPH). The results of the antioxidant activity test showed that the antioxidant activity of the ethyl acetate extract was higher (IC50=18.23μg/ml) than the n-butanol extract (IC50=29.58μg/ml). The results of the toxicity test on the ethyl acetate extract were higher (LC50=101.84 g/ml) than the n-butanol extract (LC50=154.59 g/ml). TLC analysis results showed that the mobile phase for the best separation of chemical compounds in ethyl acetate extract was chloroform-methanol (10:1) and n-butanol extract was the mobile phase chloroform-methanol-water (5:5:1), while HPLC analysis showed that the mobile phase for the separation of chemical compounds in the ethyl acetate extract was n-hexane-ethyl acetate (10:1) and the n-butanol extract was methanol-water (10:1).
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2023-11-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1288
10.30872/jkm.v21i1.1288
JURNAL KIMIA MULAWARMAN; Vol 21 No 1 (2023); 55-61
JURNAL KIMIA MULAWARMAN; Vol 21 No 1 (2023); 55-61
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1288/911
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/819
2020-02-16T16:11:48Z
JKM:ART
AKTIVASI BIOCHAR DARI KAYU Macaranga gigantea MENGGUNAKAN ZnCl2
Amanda, Intan Rizky
Putri, Kandi
Artika, Novi
Subagyono, Dirgarini Julia Nurlianti
Sanjaya, Ari Susandy
Aktivasi biochar hasil pirolisis lambat Macaranga gigantea dengan ZnCl2 telah dilakukan. Penelitian ini bertujuan untuk mengetahui karakteristik dari biochar sebelum dan sesudah aktivasi. Tahap yang dilakukan meliputi preparasi biochar dan aktivasi menggunakan ZnCl2 yang selanjutnya dikarakterisasi menggunakan TGA, FTIR dan SEM. Hasil analisa TGA menunjukkan kadar abu (%) biochar sesudah aktivasi (6,38%) lebih besar dibandingkan biochar sebelum aktivasi (1,71%), kadar zat terbang (%) biochar sebelum aktivasi (46,83%) lebih besar dibandingkan biochar sebelum aktivasi (10,29%) dan kadar karbon terikat (%) biochar sesudah aktivasi (66,28%) lebih besar dibandingkan biochar sebelum aktivasi (47,03%). Analisa FTIR biochar sebelum aktivasi menunjukkan adanya gugus –OH, C=C, C-H, C=O dan CN, sedangkan biochar sesudah aktivasi menujukkan adanya gugus C=C dan CO. Analisa SEM menunjukan adanya perbedaan morfologi biochar sebelum aktivasi dengan sesudah aktivasi.
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2019-11-29
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/819
JURNAL KIMIA MULAWARMAN; Vol 17 No 1 (2019); 6-10
JURNAL KIMIA MULAWARMAN; Vol 17 No 1 (2019); 6-10
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/819/558
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/40
2017-12-15T04:01:27Z
JKM:ART
PEMANFAATAN ARANG AKTIF DARI KULIT DURIAN (Durio zibethinus L.) SEBAGAI ADSORBEN ION LOGAM KADMIUM (II)
-, Marlinawati
Yusuf, Bohari
-, Alimuddin
The research of adsorption cadmium (II) metal ions in the solution by activated carbon from durian peel has been done. Adsorption process is done by using a variation of pH (1, 2, 3, 4, 5 and 6), variation of contact time (15, 30, 45, 60, 75 dan 90 menit), variation of the concentration (20, 30, 40, 50 dan 60 mg/L). Analysis of metal ion concentration of cadmium (II) used by Atomic Absorption Spectrophotometer (AAS). The results of this research shows that the optimum condition was achieved at the pH value of 4 and the contact time of 60 minutes. Metal ion adsorption of cadmium (II) by activated carbon from durian’s peel at pH value of 4 and the contact time of 60 minutes can achieve 64,540%. Metal ion adsorption capacity of cadmium (II) adsorbed by activated carbon from durian’s peel can achieve 0,4951 mg/g.Keywords : Adsorption, Activated Carbon, Durian Peel, Metal Ions Cadmium (II)
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2016-01-19
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/40
JURNAL KIMIA MULAWARMAN; Vol 13 No 1 (2015)
JURNAL KIMIA MULAWARMAN; Vol 13 No 1 (2015)
2476-9258
1693-5616
ind
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/40/46
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/482
2018-03-16T08:42:49Z
JKM:ART
Sintesis Dialdehid Alginat Melalui Reaksi Oksidasi Natrium Alginat Dengan Natrium Metaperiodat
Sintesis Dialdehid Alginat Melalui Reaksi Oksidasi Natrium Alginat Dengan Natrium Metaperiodat
Pasaribu, Subur P
Kaban, Jamaran
Ginting, Mimpin
Sinaga, Kasmirul Ramlan
Synthesis of dialdehyde alginate has been done by oxidation reactions of sodium alginate with sodium metaperiodate (ratio of mol 1: 1). The formation of dialdehyde alginate as a result of oxidation are characterized by FT-IR spectroscopy with a peak absorption at 1627.92 cm-1, which is the vibration stretching C = O of functional groups from the aldehyde group resulting from the -OH group oxidation process, the absorption peak is changing its wavelength and intensity more sharply compared to initial sodium alginates. In addition, the C-O-C band (cyclic ether ) at 1033 cm-1 are reduced as a result of chains cleavage. The absorption peaks that appear at 794.67 cm-1 and 732.95 cm-1 are included in the bond CH which contributes to cleavage the bending C-C of oxidized sodium alginate.
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2017-05-29
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/482
JURNAL KIMIA MULAWARMAN; Vol 14 No 2 (2017); 134-138
JURNAL KIMIA MULAWARMAN; Vol 14 No 2 (2017); 134-138
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/482/314
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/1134
2023-11-30T16:34:11Z
JKM:ART
Profil Senyawa Metabolit Sekunder Dalam Minyak Obat Ramuan Tradisional Masyarakat Sandosi Adonara Dan Masyarakat Lamatuka Lembata
Sabon, Maria Vitriani Barek
Tukan, Gerardus Diri
Bulin, Christiani Dewi Q. M.
Taek, Maximus
Penelitian ini dilakukan dengan tujuan untuk mengetahui tumbuh-tumbuhan yang digunakan dalam pembuatan minyak obat tradisional masyarakat Sandosi di pulau Adonara dan masyarakat Lamatuka di pulau Lembata serta kandungan senyawa dalam minyak obat tradisional yang digunakan dan manfaat senyawa-senyawa yang terkandung. Metode penelitian yaitu wawancara untuk mengetahui jenis-jenis tumbuhan yang digunakan dalam pembuatan ramuan minyak obat, serta analisis senyawa dalam sampel ramuan minyak obat tradisional menggunakan GC-MS. Hasil penelitian yang diperoleh bahwa tumbuhan yang digunakan dalam pembuatan ramuan minyak obat tradisional masyarakat Sandosi yakni 3 jenis tumbuhan dan masyarakat Lamatuka 45 jenis tumbuhan. Senyawa dominan dari hasil analisis GC-MS ramuan minyak obat tradisional masyarakat Lamatuka antara lain: senyawa asam laurat, asam miristat, Dilauri, Tridecanal, asam oleat, oleamide, 1,3-dipalmitin, trilaurin, trioctanoin dan corwin. Sedangkan senyawa dominan pada ramuan minyak obat tradisional masyarakat Sandosi Adonara antara lain: senyawa asam laurat, asam palmitat, asam oleat, delta decalactone, oxacyclododecan-2-one, 10-undecenyl chloride, 9-octadecenal, asam tridekanoat, ethyl trans-3-(2-oxo-5-methylcyclohexyl) propionate, delta dodecalactone, trioctanoin, 10-Undecenoic acid, methyl ester dan oleamide
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2022-12-28
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1134
10.30872/jkm.v20i1.1134
JURNAL KIMIA MULAWARMAN; Vol 20 No 1 (2022); 31-38
JURNAL KIMIA MULAWARMAN; Vol 20 No 1 (2022); 31-38
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1134/758
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/6
2023-02-13T13:42:02Z
JKM:ART
UJI TOKSISITAS (Brine Shrimp Lethality Test) dan UJI AKTIVITAS ANTIBAKTERI DAUN KEMBANG BULAN (Tithonia diversifolia A. Gray) TERHADAP BAKTERI Staphylococcus aureus dan Escherichia coli
Wahyuni, Mira
Saleh, Chairul
Kartika, Rudi
Kimia
Tithonia diversifolia A. Gray, phytochemical test, Antibacteria activity test, LC 50 .
Phytochemical, toxicity tests (Brine Shrimp Lethality Test) and the antibacterial activity of kembang bulan leaf (Tithonia diversifolia A. Gray). Phytochemical test results of secondary metabolites kembang bulan leaf (Tithonia diversifolia A. Gray) show that the ethanol extract contains alkaloids, flavonoids, steroids, phenolic and saponins. N-hexane fraction containing alkaloids and steroids. Ethyl acetate fraction contain flavonoids and steroids. Shrimp larvae toxicity test values obtained Lethal Concentration 50% (LC 50 ) at 383.5660 ppm ethanol extract, fractions 325.1583 ppm n-hexane and ethyl acetate fraction 196.3755 ppm. Test antibacterial activity against Staphylococcus aureus (Gram positive) and Escherichia coli (Gram negative) indicates that the most active fraction was ethanol extract the value of minimum inhibitory 1-2% (w / v) where the clear zone diameter of 8.5 to 9, 75 mm in the bacterium Escherichia coli and from 7.5 to 9.75 mm in Staphylococcus aureus.
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2015-09-22
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/6
JURNAL KIMIA MULAWARMAN; Vol 12 No 2 (2015)
JURNAL KIMIA MULAWARMAN; Vol 12 No 2 (2015)
2476-9258
1693-5616
ind
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/6/10
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/217
2017-12-15T04:00:55Z
JKM:ART
KAJIAN PERUBAHAN UKURAN RONGGA ZEOLIT RHO BERDASARKAN VARIASI RASIO Si/Al DAN VARIASI KATION ALKALI MENGGUNAKAN METODE MEKANIKA MOLEKULER
KAJIAN PERUBAHAN UKURAN RONGGA ZEOLIT RHO BERDASARKAN VARIASI RASIO Si/Al DAN VARIASI KATION ALKALI MENGGUNAKAN METODE MEKANIKA MOLEKULER
Sari, Wahdana Kusuma
Gunawan, Rahmat
Erwin, Erwin
Zeolite RHO, Molecular Mechanics Method, Alkaline, Pore Diameters
The structure modeling of zeolite RHO with variation of Si/Al ratio (5; 4.33; 3.8; 3.36; 3; 2.69; 2.43; 2.2; 2) and variation of alkaline cations (Li+, Na+, K+, Rb+, Cs+, Fr+) calculated by the molecular mechanics method has been investigated. The result shows that the structure of zeolite RHO with Si/Al ratio 3.36 has the most stable structure with a minimum energy 2652.0308 kcal/mol. The most stable structures of zeolite RHO impregnated with cation is that impregnated with Fr+ (alkaline) with a minimum energy 3006.6587 kcal/mol. The result shows that the zeolite RHO structure with cations Fr+ (alkaline) has the largest pore diameter which potentially has the best adsorption capacity.
The structure modeling of zeolite RHO with variation of Si/Al ratio (5; 4.33; 3.8; 3.36; 3; 2.69; 2.43; 2.2; 2) and variation of alkaline cations (Li+, Na+, K+, Rb+, Cs+, Fr+) calculated by the molecular mechanics method has been investigated. The result shows that the structure of zeolite RHO with Si/Al ratio 3.36 has the most stable structure with a minimum energy 2652.0308 kcal/mol. The most stable structures of zeolite RHO impregnated with cation is that impregnated with Fr+ (alkaline) with a minimum energy 3006.6587 kcal/mol. The result shows that the zeolite RHO structure with cations Fr+ (alkaline) has the largest pore diameter which potentially has the best adsorption capacity.
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2016-11-08
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/217
JURNAL KIMIA MULAWARMAN; Vol 14 No 1 (2016)
JURNAL KIMIA MULAWARMAN; Vol 14 No 1 (2016)
2476-9258
1693-5616
ind
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/217/270
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/524
2023-03-26T10:19:26Z
JKM:ART
Sintesis Silika Mesopori Sba-15 Dari Abu Daun Jagung (Zea Mays L)
Nasri, Nasri
Subagyono, R R Dirgarini J. N
Gunawan, Rahmat
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.
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2017-11-29
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/524
10.30872/jkm.v15i1.524
JURNAL KIMIA MULAWARMAN; Vol 15 No 1 (2017); 60-65
JURNAL KIMIA MULAWARMAN; Vol 15 No 1 (2017); 60-65
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/524/382
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/735
2023-11-30T16:44:24Z
JKM:ART
SYNTHESIS OF N-LAUROYL SERINAMIDE THROUGH AMIDATION REACTION OF SERINE WITH METHYL LAURATE AND AMIDATION REACTION OF SERINE WITH LAUROYL CHLORIDE
SINTESSI N-LAUROIL SERINAMIDA MELALUI REAKSI AMIDASI SERIN DENGAN METIL LAURAT DAN REAKSI AMIDASI SERIN DENGAN LAUROIL KLORIDA
Nande, Friskila Delfia
Research on synthesis N-lauroyl serinamide through serine reaction with methyl laurate and lauroyl chloride has been carried out. Synthesis N-lauroyl serinamide by two reaction methods, the first method was through the esterification reaction of lauric acid to produce methyl laurate and then an amidation reaction was carried out by serine to produce N-lauroyl serinamide with percent yield of 73.86% and HLB value of 6.54. Through the FTIR test showed vibration absorption of the carbonyl amide group at wave number 1624.96 cm-1. The second method is through the chlorination reaction where lauric acid is converted to lauroyl chloride and then an amidation reaction is carried out by serine to produce N-lauroyl serinamide with percent yield of 93.75% and HLB value of 7.27. Through the FTIR test showed vibration absorption of the amide carbonyl group at wave number 1631.78 cm-1. The result shows that N-lauroyl serinamide can be synthesized through serine reaction with methyl laurate and lauroyl chloride which can be used as an emulsifier o/w (oil in water).
Penelitian sintesis N-lauroil serinamida melalui reaksi amidasi serin dengan metil laurat dan lauroil klorida telah dilakukan. Sintesis N-lauroil serinamida melalui 2 metode reaksi, yang pertama melalui reaksi esterifikasi asam laurat menghasilkan metil laurat dan selanjutnya dilakukan reaksi amidasi dengan serin untuk menghasilkan N-lauroil serinamida dengan persen rendemen sebesar 73,86% dan nilai HLB sebesar 6,54. Melalui uji FT-IR menunjukkan serapan vibrasi dari gugus karbonil amida pada bilangan gelombang 1624,96 cm-1. Yang kedua melalui metode reaksi klorinasi dimana asam laurat dikonversi menjadi lauroil klorida dan selanjutnya dilakukan reaksi amidasi dengan serin untuk menghasilkan N-lauroil serinamida dengan persen rendemen sebesar 93,75% dan nilai HLB sebesar 7,27. Melalui uji FT-IR menunjukkan serapan vibrasi gugus karbonil amida pada bilangan gelombang 1631,78 cm-1. Hal ini menunjukkan N-lauroil serinamida dapat disintesis melalui reaksi amidasi serin dengan metil laurat dan lauroil klorida yang dapat digunakan sebagai pengemulsi o/w (oil in water).
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2020-11-27
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/735
10.30872/jkm.v18i1.735
JURNAL KIMIA MULAWARMAN; Vol 18 No 1 (2020); 1-7
JURNAL KIMIA MULAWARMAN; Vol 18 No 1 (2020); 1-7
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/735/593
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/1129
2023-12-02T16:20:16Z
JKM:ART
IDENTIFIKASI SENYAWA METABOLIT SEKUNDER DAN UJI AKTIVITAS ANTIOKSIDAN PADA LIMBAH KULIT BUAH
Amnestiya, Prilla
Putra, Arief Yandra
Sari, Yelfira
Indonesia adalah negara yang menyimpan kekayaan sumber daya hayati, terutama buah tropika. Tingginya keragaman tanaman buah di Indonesia menghasilkan berbagai manfaat untuk kesehatan, di antara lain sebagai antioksidan. Tidak hanya terdapat dibuah, kulit buah juga mengandung antioksidan untuk kesehatan. Manfaat antioksidan bagi tubuh di antaranya untuk melindungi sel-sel tubuh dari kerusakan yang diakibatkan oleh radikal bebas. Senyawa radikal bebas terdapat dalam lingkungan kehidupan sehari-hari manusia. Polusi udara merupakan salah satu contoh sumber radikal bebas. Sumber radikal bebas lainnya yaitu racun, paparan sinar matahari berlebih, asap rokok, makanan yang digoreng, dan obat-obat tertentu. Tujuan dari literature review ini adalah untuk mengetahui metabolit sekunder dan aktivitas antioksidan yang terdapat pada limbah kulit buah sebagai mengakal radikal bebas. Metode yang digunakan dalam karya tulis ini penelusuran pustaka melalui database Google dan Google Scholar dengan menggunakan keyword. Jurnal yang telah ditemukan dilakukan screening dengan kriteria inklusi dan eksklusi. Berdasarkan hasil dari berbagai penelusuran yang dicantumkan dalam artikel menunjukkan aktivitas antioksidan yang tinggi terdapat pada limbah kulit buag naga yaitu nilai IC50 adalah 2,69 ppm.
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2023-05-26
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1129
10.30872/jkm.v20i2.1129
JURNAL KIMIA MULAWARMAN; Vol 20 No 2 (2023); 98-104
JURNAL KIMIA MULAWARMAN; Vol 20 No 2 (2023); 98-104
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/1129/779
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/77
2017-09-02T13:19:21Z
JKM:ART
STUDI AB INITIO GRAFIT BATUBARA SEBAGAI MATERI PENYIMPAN HIDROGEN
Gunawan, Rahmat
David, Melanie
Kasai, Hideaki
Martoprawiro, Muhammad A.
Radiman, Cynthia L.
Dipojono, Herman K.
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
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2016-02-23
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/77
JURNAL KIMIA MULAWARMAN; Vol 8 No 1 (2010)
JURNAL KIMIA MULAWARMAN; Vol 8 No 1 (2010)
2476-9258
1693-5616
ind
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/77/76
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/909
2023-03-26T10:16:36Z
JKM:ART
COMPARISON OF ANALYTIC PERFORMANCE OF RESULTS OF DETERMINATION OF Pb METAL IONS USING ATOMIC ABSORPTION SPECTROPHOTOMETER of VARIOUS in SAMARINDA LABORATORIES
PERBANDINGAN KINERJA ANALITIK HASIL PENENTUAN ION LOGAM Pb DENGAN MENGGUNAKAN SPEKTROFOTOMETER SERAPAN ATOM DI BERBAGAI LABORATORIUM SAMARINDA
Surya, Arifin Syam
Yusuf, Bohari
Panggabean, Aman Sentosa
The study about the comparison of analytical performance of the determination of Pb metal ions using Atomic Absorption Spectrophotometer in various laboratories in samarinda has been conducted. The validated methods are linearity, detection limits, quantity and precision limits. The results showed, a standardized regression test obtained by laboratory A, a value of R2 ≥ 0.4103, laboratory B a value of R2 ≥ 0.983 and laboratory C, a value of R2 ≥ 0.000. The detection limit found at laboratory A was 0.6728 µg/L, laboratory B was 0.1989 µg/L and laboratory C was 0.0001 µg/L. The quantization limit obtained by laboratory A was 0.6817 µg/L, laboratory B was 0.6063 µg/L and laboratory C was 0.0001 µg/L. The precision test of laboratory A was 7.2208, laboratory B was 5.4557 and laboratory C was 0,000. The result of determining Pb of gas station soil samples in laboratory A is 0.737 µg/L and laboratory B is 0.391 µg/L, so that means they have exceeded the quality standards set by the Indonesian National Standard (INS).
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2021-11-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/909
10.30872/jkm.v19i1.909
JURNAL KIMIA MULAWARMAN; Vol 19 No 1 (2021); 17-23
JURNAL KIMIA MULAWARMAN; Vol 19 No 1 (2021); 17-23
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/909/705
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/604
2023-06-20T02:08:42Z
JKM:ART
Identifikasi Potensi Jeruk Purut Sebagai Demulsifier Untuk Memisahkan Air Dari Emulsi Minyak di Lapangan Minyak Riau
Erfando, Tomi
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).
Stabilitas emulsi merupakan indikator yang perlu dikontrol guna mencegah penurunan kualitas minyak bumi. Pemecahan emulsi ialah salah satu mekanisme yang dilakukan guna memisahkan fasa air dari minyak. Hal ini ditransformasikan menjadi senyawa kimia yang diharapkan dapat berfungsi sebagai emulsion blocking atau lazim dikenal dengan demulsifier. Demulsifier organik adalah salah satu gagasan yang tepat dalam mencegah pencemaran lingkungan tanpa mengurangi fungsi utamanya sebagai pemecah emulsi. Metode bottle test merupakan salah satu metode yang paling sering digunakan dalam uji demulsifikasi. Pengujian menggunakan metode ini dilakukan dengan memasukkan emulsi yang telah dipreparasi ke dalam botol, kemudian akan diletakkan ke dalam waterbath dengan kondisi temperatur tertentu selama beberapa jam. Pengujian ini akan dilakukan dengan melihat demulsifikasi yang terjadi setiap 30 menit. Dari pengujian temperatur, konsentrasi, serta efektivitas dari formula yang diformulasikan didapatkan kondisi optimal berdasarkan efisiensi demulsifikasi tertinggi. Berdasarkan penelitian yang dilakukan, kondisi optimal dari formula demulsifier organik adalah (3ml,80˚C) dengan perolehan efisiensi demulsifikasi sebesar 7 ml. Hasil yang diperoleh dari formulasi bahan organik belum mampu meningkatan efektivitas proses pemecahan emulsi dibandingkan dengan demulsifier komersil dan kondisi basecase (sebesar 20ml).
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2018-05-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/604
10.30872/jkm.v15i2.604
JURNAL KIMIA MULAWARMAN; Vol 15 No 2 (2018); 117-121
JURNAL KIMIA MULAWARMAN; Vol 15 No 2 (2018); 117-121
2476-9258
1693-5616
eng
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/604/423
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/201
2018-03-19T06:31:42Z
JKM:ART
Sintesis Sabun Lunak Yang Mengandung Polihidroksi Dari Minyak Biji Kakao (Theobroma cacao,L)
Sintesis Sabun Lunak Yang Mengandung Polihidroksi Dari Minyak Biji Kakao (Theobroma cacao,L)
Saleh, Chairul
Tarigan, Daniel
Al-Idrus, Rabiatul Adhawiyah
The research about synthesis of Soft Soap Containing polyhydroxy from Cocoa seed Oil, beginning with the manufacture of the polyhydroxy compound wherein the polyhydroxy compound is obtained through a process of epoxidation and hydroxylation by reacting oils cocoa beans with peroxide acetic acids (peroxy acetate was obtained from the reaction of glacial acetic acid with hydrogen peroxide) with an acid catalyst sulfate followed by oxirane ring opening process (hydrolysis) at a temperature of 40-45 oC for 2 hours, the results obtained with the reaction yield of 60 %. In the form of a mixture of soft soap is obtained by saponification of compounds polyhydroxy with Potassium Hydroxide at a temperature 70-75 oC for 1 hour with a yield of 86,45 %. Polyhydroxy compound and soap from the cocoa bean oil was analyzed by FT-IR spectrophotometer.
Respectively iodine from the cocoa bean oil 102,93mg I / gram of oil and polyhydroxy compound is 20,21 mg I / gram of oil. HLB of soap Software of oil and polyhydroxy cocoa beans from the cocoa bean oil is determined by titration method and obtained HLB of soft soap from the cocoa bean oil was 8.74 while the polyhydroxy from cacao seed oil is 10,94.
The research about synthesis of Soft Soap Containing polyhydroxy from Cocoa seed Oil, beginning with the manufacture of the polyhydroxy compound wherein the polyhydroxy compound is obtained through a process of epoxidation and hydroxylation by reacting oils cocoa beans with peroxide acetic acids (peroxy acetate was obtained from the reaction of glacial acetic acid with hydrogen peroxide) with an acid catalyst sulfate followed by oxirane ring opening process (hydrolysis) at a temperature of 40-45 oC for 2 hours, the results obtained with the reaction yield of 60 %. In the form of a mixture of soft soap is obtained by saponification of compounds polyhydroxy with Potassium Hydroxide at a temperature 70-75 oC for 1 hour with a yield of 86,45 %. Polyhydroxy compound and soap from the cocoa bean oil was analyzed by FT-IR spectrophotometer.
Respectively iodine from the cocoa bean oil 102,93mg I / gram of oil and polyhydroxy compound is 20,21 mg I / gram of oil. HLB of soap Software of oil and polyhydroxy cocoa beans from the cocoa bean oil is determined by titration method and obtained HLB of soft soap from the cocoa bean oil was 8.74 while the polyhydroxy from cacao seed oil is 10,94.
Keywords: Cocoa bean oil, Polyhydroxy compound, Soft soap polyhydroxy.
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2016-06-14
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/201
JURNAL KIMIA MULAWARMAN; Vol 13 No 2 (2016)
JURNAL KIMIA MULAWARMAN; Vol 13 No 2 (2016)
2476-9258
1693-5616
ind
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/201/177
oai:ojs.jurnal.kimia.fmipa.unmul.ac.id:article/30
2016-01-18T06:26:19Z
JKM:ART
UJI KADAR ASAM LAKTAT PADA KEJU KACANG TANAH (Arachis hypogaea L.) BERDASARKAN VARIASI WAKTU DAN KONSENTRASI BAKTERI Lactobacillus bulgaricus DAN Streptococcus lactis
Mutia, Ulfa
Saleh, Chairul
-, Daniel
The research has done of “Test content of free fatty acids in cheese peanut (Arachis hypogaea L.) by variations storage period difference and the concentration of bacteria Streptococcus lactis and Lactobacillus bulgaricus.” The cheese processing includes: coagulation, formation or salting and storage period. And the addition of skim milk and starter bacteria Streptococcus lactis and Lactobacillus bulgaricus. In the research purpose for determination the effect of concentration of starter bacteria Streptococcus lactis and Lactobacillus bulgaricus and storage period difference to free fatty acid of peanut cheese. This research used 2 factors and conducted by three time repetition. The first factor was the concentration of starter (1%, 2% and 3%) and the second factor storage period (5, 10 and 15 days). The results showed that the highest free fatty acid of starter bacteria at a concentration of 3% and storage period of 10 and 15 days. The lowest free fatty acid of starter bacteria at a concentration of 1% and storage period at zero day.Keywords: Peanut, free fatty acid, fermentation, cheese.
Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman
2016-01-18
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/30
JURNAL KIMIA MULAWARMAN; Vol 10 No 2 (2013)
JURNAL KIMIA MULAWARMAN; Vol 10 No 2 (2013)
2476-9258
1693-5616
ind
http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JKM/article/view/30/37
fa00a540dc69f4287ce11c97d014f7bb