Sintesis Isopropil Palmitat dari Esterifikasi Isopropil Alkohol dan Asam Palmitat pada Perbandingan Waktu Reaksi dan Kekuatan Mikrowave Menggunakan Katalis Enzim Lipase

Abstract

Synthesis of isopropyl palmitate from the esterification of isopropyl alcohol and palmitic acid using a lipase enzyme catalyst has been performed using microwave radiation. The parameters studied in this study were the effect of reaction time and microwave power. Confirmation of the formation of isopropyl palmitate was carried out using an FT-IR spectrophotometer while the conversion was determined using an alkalimetric titration. The highest conversion of isopropyl palmitate in the parameters of reaction time and microwave power was obtained under the conditions of reaction time of 5 minutes, microwave power of 20p, catalyst weight of 20% and molar ratio of 1: 2 of 94. 05 ± 0. 21 %. The formation of isopropyl palmitate was indicated by the appearance of an ester absorption band at wave number of 1297. I cm-] indicating the C-OC group with bending vibrations.