固体碱催化合成中碳链脂肪酸聚甘油酯  

Synthesis of polyglycerol medium chain fatty acid ester catalyzed by solid base catalyst

作　　者：曾哲灵[1,2] 邹强[1,3] 聂蓉蓉[1] 龙俊敏[4] 张驰[5] 

机构地区：[1]南昌大学食品科学与技术国家重点实验室,南昌330047 [2]南昌大学环境与化学工程学院,南昌330031 [3]南昌大学生命科学与食品工程学院,南昌330031 [4]江西生物科技职业学院,南昌330200 [5]西南科技大学 材料科学与工程学院,四川绵阳621010

出　　处：《中国油脂》2012年第5期39-43,共5页China Oils and Fats

基　　金：江西省对外科技合作项目(2010EHB02500)

摘　　要：以聚甘油、樟树籽仁油脂肪酸为原料,固体碱KOH/Al2O3为催化剂,催化酯化合成中碳链脂肪酸聚甘油酯。采用单因素试验研究反应温度、反应时间、聚甘油与中碳链脂肪酸质量比、催化剂用量对酯化率的影响,通过正交试验优化中碳链脂肪酸聚甘油酯的合成工艺。最优合成工艺条件为反应温度220℃、反应时间2.5 h、聚甘油与中碳链脂肪酸质量比2∶1、催化剂用量4.5%,该条件下酯化率为87.5%,所得中碳链脂肪酸聚甘油酯的酸值(KOH)、皂化值(KOH)、碘值(I)、熔点分别为1.86 mg/g1、48.4 mg/g、2.9 g/100 g、47.3℃。The solid base KOH/Al2O3 was used as catalyst to catalyze esterification of polyglycerol and fatty acids of camphor tree seed kernel oil to synthesize polyglyeerol medium chain fatty acid ester. The effects of reaction temperature, reaction time, mass ratio of polyglycerol to medium chain fatty acid and dosage of catalyst on esterification rate were studied by single factor tests, and the synthesis technology of polyglycerol medium chain fatty acid ester was optimized by an orthogonal test. The optimal synthesis conditions were as follows ： reaction temperature 220 ℃, reaction time 2. 5 h, mass ratio of polyglycerol to medium chain fatty acid 2： 1, dosage of catalyst 4. 5%. Under the optimal conditions, the esterifieation yield reached 87. 5%, and the acid value, saponification value, iodine value, and melting point of the product were 1.86 mgKOH/g,148. 4 mgKOH/g, 2. 9 gI/100 g and 47.3 ℃, respectively.

关 键 词：樟树籽仁油 聚甘油 固体碱 中碳链脂肪酸聚甘油酯 

分 类 号：TS221[轻工技术与工程—粮食、油脂及植物蛋白工程]