宽叶独行菜中脂肪酸的GC-MS分析

GC-MS Analysis of Fatty Acid from Lepidium latifolium L.

采用气质联用技术对宽叶独行菜中脂肪酸成分进行了分析,从其乙醇提取物的石油醚萃取部分共分离得到20个组分,采用面积归一化法测定了各组分的含量,其中棕榈酸(hexadecanoic acid)53.980%,硬脂酸(oc-tadecanoic acid)17.063%,二十二烷酸(docosanoic acid)4.769%,二十四烷酸(tetracosanoic acid)3.363%,二十八烷酸(octacosanoic acid)2.773%,花生酸(eicosanoic acid)2.719%,十五烷酸(pentadecanoic acid)2.476%,十七烷酸(heptadecanoic acid)2.291%。此外,三十烷酸(triacontanoic acid,十四烷酸(tetradecanoic acid),二十三烷酸(tricosanoic acid)和二十六烷酸(hexacosanoic acid)的含量均已超过了1%。

Constituents eluted with petroleum ether of Lepidium latifolium L.were analyzed by capillary GC-MS method.The relative content of each component was calculated by area normalization and 20 constituents were separated and identified.The main chemical components were hexadecanoic（53.980%）,octadecanoic acid（17.063%）,docosanoic acid（4.769%）,eicosanoic acid（3.363%）,octacosanoic acid（2.773%）,eicosanoic acid（2.719%）,pentadecanoic acid（2.476%）,and heptadecanoic acid（2.291%）.In addition,the contents of triacontanoic acid,tetradecanoic acid,tricosanoic acid and hexacosanoic were also more than 1%.All fatty acid are saturated fatty acid.