半干法制备非晶颗粒态玉米淀粉  

Preparation of Non-crystal Granular Starch by Semidry Process

作　　者：陈福泉[1] 张本山[1] 李芬芬[1] 周雪[1] 高凌云[1] 陈翠兰[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》2010年第6期66-70,共5页Food and Fermentation Industries

基　　金：国家科技支撑计划(2006BAD27B04);广东省科技计划项目(2007B080401010)

摘　　要：采用捏合机为反应器,结合高压,乙醇保护法和中等水分湿热制备非晶颗粒态淀粉原理,研究制备非晶颗粒态淀粉的新方法。考察了反应温度,乙醇体积分数,淀粉湿度,反应时间和反应压力对玉米淀粉的非晶化的影响,用偏光显微镜观测处理后的淀粉颗粒结构变化。结果表明∶捏合机反应槽中,反应温度为80℃,乙醇溶液中水与95%乙醇质量比为1∶1,原淀粉与乙醇溶液质量比为8∶5,在密闭的环境下反应时间为20min,可制备出非晶化率达到体积分数95%以上,无需洗涤可直接干燥,分散性良好的非晶颗粒态玉米淀粉。A kneader used as a reactor to study a new method for preparation of non-crystal granular starch with principles of high-pressure process, ethanol＇s protect and heat treatment in mid-content water. It investigated that the effects of reaction temperature, concentration of ethanol, humidity of starch, reaction time and pressure on non-crystal granular corn starch, the structures of treated starch particles were observed by polarizing microscope. The results indicate ： when reaction temperature was 80℃ , weight ratio of alcohol solution which was the mixture of water and 95% of ethanol（ 1：1, m/m） to native starch was 5 to 8 in the airtight environment for 20min, 95% of original corn starch particles was converted into amorphous non-crystal granular state which was no need to washing, direct drying and dispersed well.

关 键 词：半干法 捏合机 非晶颗粒态淀粉 玉米淀粉 亚晶颗粒态淀粉 

分 类 号：TS235.1[轻工技术与工程—粮食、油脂及植物蛋白工程]