超临界CO_2萃取浓缩天然维生素E的研究  

Extraction and Concentration Natural Vitamin E Using Supercritical CO_2

作　　者：刘云[1] 丁霄霖[2] 朱丹华[1] 

机构地区：[1]浙江省农业科学院国家大豆改良分中心 [2]江南大学食品学院,江苏无锡214036

出　　处：《化学工程》2006年第4期59-62,65,共5页Chemical Engineering(China)

摘　　要：以大豆油脱臭馏出物预处理产物为原料,在温度40—60℃、压力9—17 MPa范围内等温、等压和等密度3种条件下分别测定了预处理产物中天然维生素E和脂肪酸甲酯在超临界CO2中的溶解度,并计算了它们之间的相对分离因子。在此基础上,比较了单柱萃取、萃取+精馏和双柱萃取3种超临界CO2逆流浓缩天然维生素E的工艺方案。结果表明,双柱萃取优于其他2种方案。Solubilities were determinated for natural vitamin E and fatty acid esters under isothermal, isobaric and isochoric conditions at 40-60℃ and 9-17 MPa based on soybean deodorizer pretreatment, their relative separation factors were also measured. Three different technology projects, i.e. single column extraction, extraction and fractionation, two-column extraction, were compared. The result shows that two-column extraction has an advantage over the other ones.

关 键 词：超临界CO2 溶解度 相对分离因子 工艺方案 大豆油脱臭馏出物 

分 类 号：TQ466.5[化学工程—制药化工]