关键词: 蔗糖月桂酸酯, 超声, 酯交换, 响应面优化方法

Abstract: Sucrose laurate was synthesized under 40 kHz ultrasonic irradiation using sucrose and methyl laurate as raw materials and anhydrous potassium carbonate as catalyst .Effects of reaction time，molar ratio of sucrose to methyl laurate，DMSO amount and amount of catalyst on monoester yield were investigated. According to the Box-Benhnken design，the response surface methodology with 3 factors and 3 levels was used to set up a quadratic polynomial regression equation for the monoester yield as function of above three factors. The optimum conditions were obtained as follows：molar ratio of sucrose to methyl laurate 3.7∶1，DMSO amount 7.9mL and amount of catalyst 12.8%. Under these conditions，monoester yield was 68.16%.

Key words: sucrose laurate, ultrasonic, transesterification, response surface methodology