紫苏油中α-亚麻酸的分离纯化  

Separation and Purification of Alpha Linolenic Acid from Perilla Oil

作　　者：陈新新[1] 王昌禄[1] 李风娟[1] 王玉荣[1] 

机构地区：[1]食品营养与安全教育部重点实验室,天津科技大学食品工程与生物技术学院,天津300457

出　　处：《天津科技大学学报》2012年第4期17-20,共4页Journal of Tianjin University of Science & Technology

基　　金：国家高技术研究发展计划"863计划"资助项目(2007AA100404)

摘　　要：研究了紫苏油中α–亚麻酸的分离纯化技术.采用尿素包合与硝酸银溶液络合萃取相结合的方法,考察了尿素包合过程中混合脂肪酸、尿素、乙醇的比例以及硝酸银萃取过程中硝酸银浓度对α–亚麻酸纯化的影响.结果表明,在脂肪酸、尿素和95%乙醇质量比为1﹕1.5﹕4.8,包合温度为–18,℃,包合时间为12,h,硝酸银浓度为4,mol/L,0,℃条件下络合,α–亚麻酸纯度达99.08%,回收率为39.24%,尿素和硝酸银的回收率分别为60%和90%以上.Abstract： Techniques of separation and purification of alpha linolenic acid（α-LNA） from perilla oil were investigated. By combining the methods of urea adduction fractional and silver ion complexation, the effect ratio of the mixed fatty acid to urea to alcohol in the process of urea adduction fractional and the effect of the concentration of silver nitrate in the process of silver ion complexation on the content of α-LNA were studied. Results indicated that when the ratio of the mixed fatty acid to urea and to 95% alcohol was 1 ： 1.5 ： 4.8, adduction temperature -18℃, adduction time 12 hours, silver nitrate concentra- tion 4 mol/L and complexation temperature 0℃, the purity of α-LNA was 99.08% and the recovery rate was 39.24%, while the recovery rates of urea and silver nitrate were above 60%, and 90%, respectively.

关 键 词：紫苏油 Α-亚麻酸 尿素包合 硝酸银络合 

分 类 号：TQ645.6[化学工程—精细化工]