K_2CO_3/Al_2O_3催化大豆油甘油解制备单甘酯的研究  

Production of monoglycerides from soybean oil and glycerol catalyzed by K_2CO_3/Al_2O_3

作　　者：张震[1] 吴贤权[1] 罗慧文[1] 刘蔓蔓[1] 欧阳泽标[1] 汪勇[1] 

机构地区：[1]暨南大学食品科学与工程系,广州510632

出　　处：《中国油脂》2013年第8期34-37,共4页China Oils and Fats

基　　金："十二五"农村领域国家科技计划课题(2011BAD02B04-6);粤港关键领域重点突破项目(2009A020700003);广东省教育部产学研结合项目(2012B091100035)

摘　　要：利用K2CO3/Al2O3固体碱催化大豆油甘油解制备单甘酯。在单因素试验的基础上,利用正交试验对单甘酯制备条件进行优化,得到最优条件为:反应温度210℃,反应时间1.5 h,催化剂添加量0.8%(占大豆油质量),大豆油与甘油物质的量比1∶3。在最优条件下,单甘酯含量达到58.26%。经过两级分子蒸馏,单甘酯含量高达95.69%,回收率为90.8%。Monoglycerides （MG）were produced by glycerolysis of soybean oil and glycerol catalyzed by K2CO3/Al2O3. The reaction conditions were optimized by orthogonal experiment on the basis of single factor experiment. The optimal conditions were as follows： reaction temperature 210 ℃, solid base cata- lyst dosage 0. 8% （ based on the mass of soybean oil） , molar ratio of soybean oil to glycerol 1 ： 3 and re- action time 1.5 h. Under the optimal conditions, the content of MG was 58.26%. After two - stage mo- lecular distillation, the content of MG was 95.69% and the recovery rate.was 90. 8%.

关 键 词：固体碱催化剂 单甘酯 大豆油 分子蒸馏 制备 

分 类 号：TS225[轻工技术与工程—粮食、油脂及植物蛋白工程] TQ645[轻工技术与工程—食品科学与工程]