刺梨籽油脂肪酸的提取及其成分测定GC-MS . Analysis on the components of fatty acids extracted from Rosa roxburghii seed oil with different extraction solvents

Abstract

Fatty acids in the seed oil of Rosa roxburghii were extracted by soxhlet extraction with five solvents(anhydrous ethanol,n-hexane,petroleum ether(60~90 ℃),diethyl ether and acetone).After being methyl esterification catalysed with KOH,the fatty compositions were detected by GC/MS.The results showed that extraction solvents had little effects on the components and contents of fatty acids from R. roxburghii seed oil.The major fatty acids were hexadecanoic acid,linoleic acid,linolenic acid,octadecanoic acid and eicosanoic acid,their average content was 92.3%.