四棱豆油脂的脂肪酸组成测定

Analysis of fatty acid composition of winged bean(Psophocarpus tetragonolobus [L.] D.c.)seeds oil

选取4个四棱豆品种的种子,用甲醇和氯仿提取其中的油脂,并用毛细管柱测定脂肪酸组成。结果显示,四棱豆油中主要含有28种脂肪酸,其中单不饱和脂肪酸的平均含量为38·20%,主要为油酸;多不饱和脂肪酸平均含量为34·88%,主要为亚油酸、α-亚麻酸和EPA;饱和脂肪酸平均含量为25·76%,主要为棕榈酸和硬脂酸。

The compositions of fatty acid from 4 kinds of winged seeds oils extracted with methanol and chloroform were determined by GC equipped with capillary column. The results indicated that the oil was composed of 28 fatty acids. The average content of MUFA was 38.20%,and the major component was oleic acid. The content of PUFA was 34.88%,and the major component was linoleic acid,α-linolenic acid and EPA. The content of SFA was 25.76%,and the major component was palmitic acid and stearic acid.