冻绿种子油脂提取及脂肪酸组成分析-李硕(GC-MS) . Extraction and fatty acid composition of Rhamnus utilis seed oil

Abstract

The oil was extracted from Rhamnus utilis seed by counter—flow extraction with petroleum ether(60—90℃)as solvent．The effects of ratio of material to liquid，extraction temperature and extrac— tion time on the yield of oil were studied by single factor experiment，and the extraction conditions were optimized by uniform design as follows：ratio of material to hquid 1:19，extraction temperature 90℃，ex— traction time 2 h．Under these conditions．the yield of Rhamnus utilis seed oil Was 22．47％．The fatty acid composition of Rhamnus utilis seed oil Was analyzed by GC—MS．and the result showed that twenty—one kinds of fatty acids were detected from the oil，in which the contents of linoleic acid，oleic acid，linolenic acid。palmitic acid and stearie acid were 39．540％，30．140％，21．530％，4．700％and 2．430％，respeetively．