火麻仁油超临界CO_2梯度萃取与分析  

Gradient Supercritical Carbon Dioxide Extraction and Analysis of Hemp Oil

作　　者：董海胜[1] 朱景涛[1] 臧鹏[1] 张淑静[1] 陈斌[1] 

机构地区：[1]航天医学基础与应用国家重点实验室中国航天员科研训练中心,北京100094

出　　处：《食品科学技术学报》2013年第1期55-59,共5页Journal of Food Science and Technology

基　　金：国家自然科学基金青年基金资助项目(31101251);载人航天医学工程预研项目(SJ201001;BX110C029)

摘　　要：以脱壳火麻仁为原料,采用超临界CO2梯度萃取火麻仁油,采用标准方法分别分析火麻仁油的脂肪酸组成及生育酚组成.结果表明:采用三段式超临界CO2梯度萃取,不同萃取阶段得到的火麻仁油脂肪酸组成存在一定差异,随着萃取压力及温度的升高,超临界CO2萃取出部分微量脂肪酸,包括:C20:3n6、C22:0及C24:0.火麻仁油中生育酚以(β+γ)-生育酚为主,采用三段式超临界CO2梯度萃取火麻仁油,生育酚主要在前两个阶段被萃取出来.The hemp oil was extracted from the hemp kernels by gradient supercritical carbon dioxide and analyzed using national standard method. The result showed that the fatty acid compositions of hemp oil were different at every stage when using three-step gradient supercritical carbon dioxide. As the extraction pressure and temperature rised, certain trace fatty acids were extracted , namely C20：3n6, C22：0, and C24：0. The tocopherol isomer of hemp oil was mainly （β＋γ） - tocopherol. Tocopherol was concentrated by the former two extraction step during the three-step gradient supercritical carbon dioxide extraction.

关 键 词：火麻仁油 萃取 脂肪酸 生育酚 

分 类 号：TS224.4[轻工技术与工程—粮食、油脂及植物蛋白工程]