尿素包合法制备高纯度油酸甲酯的研究  

Study on preparation of high purity methyl oleate by urea adduction fractionation

作　　者：路光辉[1] 刘伟[1] LU Guang-hui LIU Wei(College of Food Science and Technology, Henan University of Techonlogy, Zhengzhou 450001, Henan, China)

机构地区：[1]河南工业大学粮油食品学院,河南郑州450001

出　　处：《粮食与油脂》2017年第6期45-49,共5页Cereals & Oils

基　　金：河南省高等学校青年骨干教师资助计划(2014GGJS-058);河南工业大学青年骨干教师培育计划(2014003)

摘　　要：将油茶籽油甲酯化后得到油籽脂肪酸甲酯,再对油茶籽脂肪酸甲酯进行尿素包合,使其中的油酸甲酯含量得到提高。为了进一步提高油酸甲酯的纯度,进行了2次尿素包合优化。试验结果表明:在尿素用量与第2次尿素包合原料的质量比2.75:1、结晶温度0℃、结晶时间12 h、包合搅拌速度650 r/min、包合搅拌时间2 h的条件下进行尿素包合,效果最佳。通过气相色谱对包合后的脂肪酸甲酯产品进行分析,表明油酸甲酯的纯度由78.98%提高到93.53%。Fatty acid methyl ester of the tea seed oil was obtained by methyl esterification. The method of urea adduction fractionation was used to purify the methyl oleate. In order to further improve the purity of methyl oleate, two urea adduction fractionation was conducted. The results showed that the optimum conditions were mass ratio of urea to the second urea adduction of raw materials 2.75 ： 1, crystallization temperature 0℃, crystallization time 12 h, adduction stirring speed 650 r/min and adduction stirring time 2 h. The composition of fatty acid methy ester was analyzed by GC. The purity of methyl oleate was improved from 78.98% to 93.53% under the optimum conditions.

关 键 词：油茶籽油 甲酯化 尿素包合法 油酸甲酯 

分 类 号：TS201.2[轻工技术与工程—食品科学]