关键词: 光皮树, 抽出物, 不饱和脂肪酸, GC-MS

Abstract:

Cornus wilsoniana seeds were extracted with absolute ethanol, acetone, hexane, petroleum ether and ethyl acetate respectively, and the extracts obtained were decolorized with active carbon prior to GC-MS analysis. Palmitinic acid, oleic acid and linoleic acid were the predominant compounds in ethanol and acetone extracts. Among them, the relative content of linoleic acid was the highest, as high as more than 52% and that of oleic acid was the lowest, less than 8.2%. The main compounds in respective methyl esterification products of hexane, petroleum ether and ethyl acetate extracts were palmitinic acid, steric acid, oleic acid and linoleic acid. Among them, the relative content of oleic acid was the highest, as high as more than 42%, followed by linoleic acid. The relative contents of total unsaturated fatty acids in hexane, petroleum ether and ethyl acetate extracts were all more than 70%. No triunsaturated fatty acids were detected in any of the 5 extracts.

Key words: Cornus wilsoniana, extract, unsaturated fatty acid, GC-MS