TY - JOUR AU - Panannangan, Josua K. AU - Daniel, Daniel AU - Saleh, Chairul PY - 2017/12/29 TI - SINTESIS ESTER GALAKTOSA ASAM LEMAK DARI METIL ESTER MINYAK BIJI KOPI ARABIKA (Coffea arabica) DAN GALAKTOSA ASETAT JF - PROSIDING SEMINAR NASIONAL KIMIA; SEMINAR NASIONAL KIMIA 2017 KW - N2 - The synthesis of ester galactose fatty acid from methyl ester of arabica coffee seed oil (Coffea arabica) and galactose acetate with a toxic solvent-free synthesis process has been performed. Methyl ester oil of coffee beans is synthesized from coffee seed oil that has been macerated for 3 days with oil content of 17% and the result of methyl ester synthesis of coffee seed oil has a yield percentage of 87.93% with methanol reaction medium with 1% H 2 SO 4 catalyst. Galactose acetate was synthesized from galactose and anhydrous acetic acid on a 1: 1 ratio resulting in galactose acetate with a yield percentage of 91.29%. The synthesis of fatty acid galactose ester from methyl ester coffee seed oil and galactose acetate was synthesized with a 1: 1 mole ratio using a 1 M M NaHCO 3 catalyst with a temperature of 80-100 ÂșC for 6 hours yielding galactosil ester of fatty acid coffee seed oil. FTIR analysis showed that ester group formed from coffee seed oil methyl ester at wave number 1745,58 cm -1 . FTIR analysis of galactosil acetate showed the presence of ester group formed from galactose at wave number 1728,22 cm -1 . FTIR analysis of galactose oil seed oil ester showed the presence of ester group at wave number 1743,65 cm -1 and group (CH 2 )n at wave number 721,38 cm -1 with value of HLB obtained 3,494.   Keywords: C offee bean oil, galactose acetate, interesterification, fatty acid ester galactose UR - http://jurnal.kimia.fmipa.unmul.ac.id/index.php/prosiding/article/view/543