非晶颗粒态玉米淀粉制备羧甲基淀粉  

Preparation of Carboxyl Methyl Starch by Non—crystal Granular Corn Starch

作　　者：张向阳[1] 张本山[1] 赵永青[1] 

机构地区：[1]华南理工大学轻工与食品学院

出　　处：《食品与发酵工业》2008年第7期90-92,共3页Food and Fermentation Industries

基　　金：国家科技支撑计划(2006BAD27B04)

摘　　要：以非晶颗粒态玉米淀粉、氯乙酸为主要原料,用乙醇溶剂法制备羧甲基淀粉。研究了反应温度、时间、氯乙酸、淀粉乳浓度、水分含量对样品取代度(DS)的影响。结果表明:在淀粉乳浓度20%,n(氯乙酸):n(淀粉) =1:4,n(NaOH):n(淀粉)=1:2,乙醇溶剂含水30%条件下,55℃反应4h得到较高取代度的羧甲基淀粉。In this paper,Carboxy methyl starch was preparared by Non-crystal Granular corn starch and chloroacetic acid under ethanol condition. The factors which affected degree of substitution of Carboxy methyl starch , such as reaction temparation,reaction time, consumption of choloacetic acid , consumption of Sodium hydroxide,starch concentration,moisture cotent, were discussed in this paper. The results showed that when the molar ratio of chloroacetic acid and starch was 25 %, the molar ratio of Sodium hydroxide and starch was 0.5, moisture cotent and starch concentration were 30%and 20% respectively, reaction temparation and reaction time were 55℃ and 4 hour respectively,the product has higher degree of substitution.

关 键 词：非晶颗粒态淀粉 羧甲基淀粉 醚化反应 样品取代度 

分 类 号：TS236.9[轻工技术与工程—粮食、油脂及植物蛋白工程] TS235.2[轻工技术与工程—食品科学与工程]