阳离子糯玉米淀粉制备工艺

Process for preparing cationic waxy maize starch

以特种糯玉米淀粉为原料,以N-(2,3-环氧丙基)三甲基氯化铵为阳离子化试剂,制备糯玉米阳离子变性淀粉,根据单因素的实验,选择N-(2,3-环氧丙基)三甲基氯化铵用量、氢氧化钠用量、加水量,反应温度、反应时间,五因素三水平正交实验设计,实验结果表明,糯玉米阳离子变性淀粉的最佳制备条件是:N-(2,3-环氧丙基)三甲基氯化铵用量为1mL,氢氧化钠用量为0.29g,加水量为5mL,反应温度为90℃,反应时间为3.23h;同时,本研究对样品进行了取代度分析。

Waxy corn cationi starch was prepared from wheat starch by using 2, 3 - epoxypropyl trimethyl ammonium chloride （GTA） as cationic reagent. The five factors （GTA amounts, sodium hydroxide amounts, water amounts, reaction temperature and reaction time） and three leverls＇ response surface methods text were designed. It was found that the optimum condition was GTA amounts 12mL, sodium hydroxide amounts 0. 29g. water am ounts 5mL. reaction temperature 90℃ and reaction time 3.23h. In addition, interaction effect to dual -factor on the degree of substitution was analyzed.