秦岭山区漆树种籽含油率与脂肪酸成分分析_王森 . Oil content and fatty acid composition of Toxicodendron vernicifluum seeds from the Qinling Mountains

Abstract

Toxicodendron vernicifluum seeds of four cultivars 'Huoguanzi','Baipigaobachi','Huangronggaobachi',and 'Guizhouhuang' grown in Qinling mountainous areas were collected,and oil content and fatty acid composition were analyzed by Soxhlet extraction and GC-MS(gas chromatography-mass spectrography) respectively.The results show that: ①The oil contents varied significantly with cultivars,ranging from 10.90% to 16.21%.②Twenty-three fatty acids were identified for each cultivar,including seven principal acids,i.e.linoleic acid,oleic acid(E),oleic acid(Z),linolenic acid,zoomaric acid,palmic acid,and stearic acid;the total content of these seven acids made up 97.28%,98.09%,98.12%,and 95.02% for the cultivars,respectively.③The contents of unsaturated fatty acids also varied greatly with the cultivar,ranging from 67.41% to 83.03%.④Fatty acid composition differed markedly between the local cultivars 'Huoguanzi','Baipigaobachi','Huangronggaobachi',and the introduced 'Guizhouhuang',particularly in the composition of nine fatty acids such as pentadecoic acid,octadecane-9,12-dienoic acid,and tricosoic acid,which expressed highly significant difference between the two cultivar groups.