Abstract: The fatty acids of seed oil of microula sikkimensis Hemsl in Tianzhu Cunty of Gansu province were determined by using methods of GC/MS.11 Fatty acids which are about 99.92% of total seed oil have been identified.The main compounds are linoleic acid, oleic acid, a-Linolenoic acid,Gondoic acid, palmitic acid, γ-linoenoic acid, and stearic acid.Among 11 compounds there are 4 saturated fatty acids and 7 unsaturated fatty acids.The contents of them are 13.54% and 86.46% of total contents of 11 compounds respectively.Among them the conten of γ-linoenic is 6.37%.The seed oil content of Microula sikkimensis Hemsl is 43.5%.

Key words: Seed oil of Microula sikkimensis Hemsl, Fatty acid, γ-linolenoic acid, GC/MS

摘要： 采用色谱-质谱二联仪(GC/MS)研究天祝微孔草草籽油的化学成分。共分离鉴定出11种化合物,占油样总量的99.92％,主要是亚油酸、油酸、α-亚麻酸、顺-11-二十碳烯酸、软腊酸、γ-亚麻酸、硬脂酸。饱和脂肪酸4种,不饱和脂肪酸7种,含量分别占总量的13、54％和％.46％。γ-亚麻酸含量为6.37％。种子含油43.5％。

关键词: 微孔草籽油, 脂肪酸, γ-亚麻酸, 色质二联仪