唐古特白刺籽油的超临界CO_2流体萃取及GC/MS分析  

Supercritical CO_2 fluid extraction of Nitraria tangutorum Bobr.seed oil and GC/MS analysis

作　　者：王洪伦[1] 王小艳[1] 张凤枰[2] 张蓉健[2] 索有瑞[1] 

机构地区：[1]中国科学院西北高原生物研究所 [2]国家粮食储备局成都粮食储藏科学研究所,成都市610031

出　　处：《中国油脂》2006年第10期61-63,共3页China Oils and Fats

摘　　要：利用超临界CO2萃取唐古特白刺籽油，并对籽油进行了GC／MS分析。实验确定的最佳超临界CO2流体萃取条件是：萃取温度45℃，萃取压力20MPa，CO2流量为35～40kg／h，萃取时间120min，在此条件下白刺籽油的萃取率为15．11％。利用GC／MS对白刺籽油分析，发现其不饱和脂肪酸的相对含量高达93．37％。比较了超临界CO2萃取白刺籽油油样和石油醚萃取白刺籽油油样的理化性质，发现超临界CO2流体萃取的籽油质量优于传统溶剂萃取的籽油。Nitraria tangutorum Bobr. seed oil was obtained acid composition was analyzed by GC/MS. The results showed by supercritical carbon dioxide extraction and its fatty that the optimum parameters were as follows：pressure 20 MPa, temperature 45 ℃, CO2 flow rate 35 - 40 kg/h and dynamic extraction time 120 min. The oil yiehl was 15. 11% in the optimum conditions. The oil contained abundant unsaturated fatty acids. The content of unsaturated fatty acid was 93.37%. The oil extracted with supercritical CO2 was superior to that with petroleum ether.

关 键 词：唐古特白刺 超临界CO2萃取 不饱和脂肪酸 GC/MS分析 

分 类 号：TS224[轻工技术与工程—粮食、油脂及植物蛋白工程]