酶法选择性合成麦芽糖月桂酸酯的溶剂体系研究

he selectivity, esterification ratio, and residual enzymatic activity in the enzymatic synthesis of lauroyl maltose ester in five organic solvents were studied. The characteristics of different composite solvent combinations were tested and it was found that the combination of acetone-hexane has a good selectivity for the synthesis of lauroyl maltose diesters. A yield of 66.8% was obtained with following conditions: molar ratio between acetone and hexane 7:3, lipase 20 g/L, maltose 50 mmol/L, lauric acid 200mmol/L, molecular sieve 80g/L, condensation for 72 hours at 50℃.