风吹楠种子油萃取工艺研究及其脂肪酸成分分析_薛宝金 . extraction of horsfieldia amygdalina seed oil and analysis of its fatty acids

Abstract

Horsfieldia amygdalina oil was extracted using three different solvents of chloroform, ethyl ether and hexaneisopropanol ( 3:2, volume ratio) . The results showed ethyl ether was the most efficient solvent for extraction． The effects of extraction time， ultrasonic wave and solvent volume on seed extraction yield were studied． The maximum extraction yield ( 60.27 wt% ) was achieved with a ratio 10:1 ( v /w) of ethyl ether to seed kernel for 2 h extraction time under ultrasonic conditions ( 25 ℃,60 W) . After transesterification of the seed oil with methanol， its major fatty acid composition was analyzed by GC-MS．The lauric acid ( 42.58% ) and myristic acid ( 47.55% ) accounted for 90.13% of total fatty acids， and unsaturated fatty acids was less than 3% ．