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.
出处
《食品与生物技术学报》
CAS
CSCD
北大核心
2005年第5期94-97,共4页
Journal of Food Science and Biotechnology
关键词
半干法
阳离子淀粉
反应效率
取代度
semi-dry process
cationic starch
reaction efficiency
degree of substitution
