一种共轭化植物油的光化学制备方法  

A photochemical preparation method for conjugated vegetable oil

作　　者：吴伟[1] 张晓云[1] 康寿兴[1] 

机构地区：[1]中国石油大学(华东)化学化工学院,山东青岛266555

出　　处：《中国油脂》2010年第7期28-30,共3页China Oils and Fats

基　　金：山东省科技攻关计划资助项目(2008GG1006008)

摘　　要：对共轭化植物油的光化学制备方法进行了研究,考察了引发剂DPIS用量、溶剂种类、植物油质量浓度、温度等因素对共轭化反应的影响。结果表明:在玉米油40 g,环己烷300 mL,72℃,引发剂用量0.2%条件下,玉米油可在30 min内被完全共轭化。利用核磁共振氢谱和气相色谱分析了光化学共轭化玉米油中脂肪酸的组成,其共轭亚油酸(CLA)异构体主要为t9,t11-CLA(含量39.10%),与碱法共轭产品中CLA主要为c9,t11-CLA和t10,c12-CLA有明显区别。The preparation of conjugated vegetable oil by a photochemical method was reported. The parameters affecting the conjugation reaction, including the amount of initiator（ DPIS）, the type of solvents, the concentration of corn germ oil and temperature, were investigated. Under the condition of 72℃, 0.2% initiator, 40 g corn germ oil and 300 mL cyclohexane, corn germ oil could be totally conjugated within 30 min. The composition of fatty acids of totally conjugated corn germ oil was measured by 1H NMR and gas chromatography. It revealed that the CLA from photochemical conjugation was mainly t9, t11 -CLA （39.10%）, which was significantly different from the base -conjugated CLA（ mainly c9, t11- CLA,t10 ,c12 - CLA）.

关 键 词：共轭化植物油 光化学反应 共轭 玉米油 

分 类 号：TS224[轻工技术与工程—粮食、油脂及植物蛋白工程]