三频复合超声强化酯交换合成蔗糖单月桂酸酯工艺  

Synthesis of sucrose laurate via transesterification under tri-frequency ultrasonic irradiation

作　　者：徐勇士[1,2,3] 陶加明 董明英 闫雨洁 周昊 李大成[4] 杭方学 XU Yong-shi;TAO Jia-ming;DONG Ming-ying;YAN Yu-jie;ZHOU Hao;LI Da-cheng;HANG Fang-xue(Engineering Research Center for Sugar and Comprehensive Utilization of Guangxi University,Ministry of Education,Nanning 530004,China;Guangxi Sugar Society,Nanning 530004,China;Guangxi Baiguitang Food Science and Technology Co.,Ltd.,Guigang 537121,China;College of Light Industry and Food Engineering,Guangxi University,Nanning 530004,China)

机构地区：[1]广西大学糖业及综合利用教育部工程研究中心,广西南宁530004 [2]广西制糖学会,广西南宁530004 [3]广西百桂堂食品科技有限公司,广西贵港537121 [4]广西大学轻工与食品工程学院,广西南宁530004

出　　处：《应用化工》2021年第8期2042-2045,2050,共5页Applied Chemical Industry

基　　金：国家自然科学基金资助项目(11164001);广西科技计划项目(桂科AB16380011)。

摘　　要：以蔗糖、月桂酸甲酯为反应原料,二甲基亚砜为溶剂,无水碳酸钾催化,研究三频复合超声场中酯交换反应合成蔗糖单月桂酸酯。结果表明,三频复合超声相比于单频超声和双频超声,明显提高了单酯产率,53+20+40 kHz三频复合超声作用下单酯产率最高,最佳工艺为糖酯摩尔比6.4∶1,催化剂用量12.4%和反应温度77℃。此条件下,蔗糖单月桂酸酯产率为90.05%。The sucrose and methyl laurate used as raw materials,dimethyl sulfoxide used as the solvent,and anhydrous potassium carbonate used as catalyst,the sucrose laurate was synthesized via transesterification under tri-frequency ultrasonic irradiation.Results indicated that tri-frequency ultrasonic irradiation can significantly increases sucrose monolaurate yield,compared with single frequency and dual frequency ultrasound,and the yield of monoester was the highest under 53+20+40 kHz tri-frequency ultrasonic irradiation.The optimum condition was the molar ratio of sucrose to methyl laurate 6.4∶1,amount of catalyst 12.4%,and the temperature of 77℃.Under the optimum condition,the sucrose monolaurate yield could reach 90.05%.

关 键 词：蔗糖月桂酸酯 三频复合超声 酯交换 响应面优化 

分 类 号：TQ423.2[化学工程] TQ225