干法制备硬脂酸淀粉酯的研究  

Study on Preparation of Stearic Acid Starch Ester by Dry Process

作　　者：周君[1] 王蕾 汝远 侯汉学[1] 刘传富[1] 代养勇[1] 董海洲[1] 

机构地区：[1]山东农业大学食品科学与工程学院,泰安271018 [2]山东省食品药品检验研究院,济南250101

出　　处：《中国粮油学报》2016年第7期34-40,共7页Journal of the Chinese Cereals and Oils Association

基　　金：国家自然科学基金(31471619);山东省自然科学基金(ZR2014JL020)

摘　　要：针对硬脂酸淀粉酯的制备存在生产成本高、食用安全差等问题,在不添加任何有机溶剂条件下,采用挤压机干法制备硬脂酸淀粉酯,探讨转速、含水量、套筒温度及硬脂酸加入形式对硬脂酸淀粉酯性质的影响,并通过XRD、SEM、FT-IR揭示其高效性机理。结果表明,挤压机的高温高剪切作用破坏了淀粉原有的晶体和颗粒结构,从而硬脂酸可进入淀粉颗粒内部与淀粉分子反应,显著提高了反应均匀性和反应效率。并确定了该法制备硬脂酸淀粉酯的最佳工艺条件:转速为900 r/min、含水量为22%、套筒温度为140℃。To solve the high cost of production, food safety issues of the preparation of starch searate, an extru- der was used as a dry reactor to prepare stearic acid starch ester under solvent -free conditions, studying the influ- ence of speed, moisture content, barrel temperature and the adding form of stearic acid on properties of stearic acid starch ester. And the efficiency mechanism was revealed by XRD,SEM and FT- IR. The results showed that high temperature and high shear of the extruder destroyed the crystal and granular structures of starch. So stearic acid could enter the inside of starch granules and react with starch molecules, which improved reaction uniformity and effi- ciency. The optimum conditions of producing stearic acid starch ester were speed 900 r/min, moisture content 22%, and barrel temperature 140 ℃.

关 键 词：挤压机 干法 硬脂酸淀粉酯 

分 类 号：TS235.1[轻工技术与工程—粮食、油脂及植物蛋白工程]