半干法制备低取代度阳离子淀粉的工艺研究  

Half-dry Preparation of Cationic Starch with Low Substitution Degree

作　　者：张凤[1] 董海洲[1] 侯汉学[1] 刘传富[1] 

机构地区：[1]山东农业大学食品科学与工程学院,山东泰安271018

出　　处：《食品与发酵工业》2007年第9期113-117,共5页Food and Fermentation Industries

摘　　要：以玉米淀粉为原料,以3-氯-2羟丙基三甲基氯化铵(CHPTMA)为醚化剂,以NaOH为催化剂的条件下,半干法制备了低取代度阳离子淀粉。确定了半干法制备低取代度阳离子淀粉的工艺路线,研究了各反应因素对阳离子淀粉反应效率的影响,并以反应效率为指标,利用二次通用旋转试验建立了相应的回归方程,确定了最佳工艺参数为:NaOH与醚化剂的摩尔比1.85∶1,体系含水量20.49%,反应温度60.65℃,反应时间4.49h,最佳条件下制备的阳离子淀粉反应效率可达到89.48%,取代度为0.0335。The cationic starch with low degree of substitution was half-dry prepared from corn starch, CHPTMA and NaOH. The technology process and the effect of four factors have been studied. Using quadratic general rotary experiment design, the regression equation of the degree of substitution with factors was established. The optimum technology conditions were confirmed as followings： the ratio of CHPTMA and NaOH was 1.85, the water content was 20.49 %, the reaction temperature was at 55℃, the reaction time was 4 hours, the reaction efficiency was up to 89.48% ,the degree of substitution was 0. 033 5.

关 键 词：阳离子淀粉 3-氯-2羟丙基三甲基氯化铵 反应效率 半干法 

分 类 号：TS236.9[轻工技术与工程—粮食、油脂及植物蛋白工程]