响应面法优化硬脂酸淀粉酯合成的研究  

OPTIMIZATION OF STARCH STEARATE SYNTHESIS BY RESPONSE SURFACE METHODOLOGY

作　　者：韩立鹏[1] 李琳[1,2] 刘国琴[1,2] 

机构地区：[1]河南工业大学粮油食品学院,河南郑州450052 [2]华南理工大学轻工与食品学院,广东广州510640

出　　处：《河南工业大学学报（自然科学版）》2009年第4期36-40,共5页Journal of Henan University of Technology：Natural Science Edition

基　　金：河南省杰出人才基金(074200510008);河南省科技攻关基金(072102270023);河南工业大学博士基金(2006BS023)

摘　　要：以小麦淀粉为原料,硬脂酸为酯化剂,盐酸为催化剂,在干法条件下合成硬脂酸淀粉酯.通过单因素实验研究了各因素对产品取代度(DS)和反应速率(RE)的影响,确定了合成硬脂酸淀粉酯的适宜工艺条件:盐酸用量(淀粉干基)0.05%、体系含水量20%、硬脂酸添加量(淀粉干基)3%、反应时间180 min、反应温度150℃,得到取代度为0.0138的产品.在单因素实验的基础上,通过响应面实验得到最优工艺条件,获得取代度为0.0142的产品.Starch stearate was synthesized from wheat starch, stearic acid as esterifying agent, and hydrochloric acid as catalyzer under dry condition. The influences of each factor on the degree of substitution （DS） and the reaction efficiency （RE） were investigated by single factor experiments. The product with DS of 0. 0138 can be obtained under the following optimal conditions ： hydrochloric acid amount 0.05 % （ dry starch ） , water content 20% , stearie acid amount 3% （dry starch） , reaction time 180 min and reaction temperature 150 ℃. On the basis of single factor experiments, the optimized process conditions were analyzed by response surface methodology （RSM） to obtain a product with DS of 0. 014 2.

关 键 词：小麦淀粉 硬脂酸淀粉酯 取代度 

分 类 号：TS23[轻工技术与工程—粮食、油脂及植物蛋白工程]