| dc.description.abstract | The production of isopropyl myristate througli the esterification reaction of myristic acid with, iso prop)1l alcohol has been carried oi t using the lipase en.zyme as a biocatalyst with microwave radiation. The parameters examined in this study were
the molar ratio o'f m yristic acid to isopropyl alcohol with variatons of·1:1, 1:2, 1:3,
1:4, 1:5 and the i'7:fluence of the weight o,f the lipase enzyme with variations of 1%, 5% , 10%, 15%, 20%, 25%, 30%, 40%. The conversion of isopropyl niyristate obtained was determined by alkalimetric titration and confirmed by using an FT-IR SfJectro ph.otometer. The h.ighest conversion of iso propyl myristate for the molar ratio parameter of myristic acid to isopropyl alcohol of· 94.57 + 0.24% was obtained at reaction conditions of 1:2, microwave power 20%, catalyst weight 20 %, and reaction tinze 1 minitte, while for the l-vei gh.t of enzyme lipase para,neter maxitnum conversiori of 94.68 + 1.33% was obtained under reaction conditions of 20% microl-va ve power , 5% ca talyst weight , 1 mitzute reaction ti,ne, and 1:2 molar ratio. The.forma tion , of /PM is characte rized by an, absorption band in the area of 1692.21 cm-1, proving the existence of· stretching vibrations of the carbonyl group (C=O) from the ester and is supported by stretcliing vibrations of -C-0 -C- ester at wave numbers 1300 - 1000 cm-1. | en_US |
