半干法制备低取代度阳离子淀粉研究  

Preparations of Cationic Starch with Low Degree of Substitution Using the Semi-Dry Process

作　　者：张晓宇[1] 童群义[1] 

机构地区：[1]江南大学食品学院,江苏无锡214036

出　　处：《食品与生物技术学报》2005年第5期94-97,共4页Journal of Food Science and Biotechnology

摘　　要：采用3-氯-2-羟丙基三甲基氯化铵为醚化剂,半干法合成低取代度阳离子淀粉.采用单因素实验、正交实验确定了获得高反应效率的最优条件为:催化剂与醚化剂的摩尔比1.6、反应温度100℃、反应时间3 h、反应中水分质量分数为25%、醚化剂用量1.7 g.The cationic starch with low degree of substitution was prepared via reacting starch with 3-chloro-2-hydroxypropyltrimethylammonium chloride（CHPTMA） using the semi-dry process. Through single factor tests and orthogonal tests, it was concluded that under the conditions that sodium/amine molar ratios 1.6, temperature 100℃, reaction duration 3 h, the contents of water 25%, and amine 1.7 g, the optimized reaction efficiency was obtained; under the conditions that sodium/amine molar ratios 1.6, temperature 100℃, reaction duration 2.5 h, the contents of water 25%, amine 3.75 g,the optimized and relatively high DS was obtained.

关 键 词：半干法 阳离子淀粉 反应效率 取代度 

分 类 号：TS236.9[轻工技术与工程—粮食、油脂及植物蛋白工程]