【摘要】 本文首次用超临界CO₂萃取菜籽油下脚料中的天然V_E和脂肪油,并用GC-MS联用技术对萃取物中天然V_E进行了含量测定,将萃取的脂肪油进行了GC-MS分析。结果表明,超临界CO₂萃取能从油下脚料中萃取出天然V_E,萃取物中V_E的含量比原料（油脚）提高5倍左右,V_E的萃取率达95％;所萃取的脂肪油中含有10种脂肪酸,主要成分为油酸、亚油酸及亚麻酸等,其中亚油酸和亚麻酸等人体必须脂肪酸含量明显提高,芥酸的含量大大低于食用菜籽油的水平。更多还原

【Abstract】 Natural VE and fatty oil from the oil foot of Brassica campestris are extracted by supercritical-CO2. After saponification and esterification these acidesters and natural VE in the extraction are analyzed by GC-MS. The results show that the fatty acids from SFE-CO2 contain 10 components which of oleic acid, linodeic acid and linolenic acid are main components, hnodenic acid and linoleic acid of them are increased signifantly, at the same time, natural VE can be extracted from the materials and the rate of extraction gets to 95%.更多还原