摘要
以玉米淀粉为原料,采用复合酶解法制备玉米多孔淀粉,考察了酶用量、酶配比、反应时间、反应温度、淀粉浓度以及pH值对多孔淀粉吸附性能的影响。通过单因素实验确定了制备玉米多孔淀粉的优化条件为:酶用量为1.2%,酶配比为1∶2,反应温度为55℃,反应时间为12 h,pH为6.0,淀粉的浓度为30%。制备得到的多孔淀粉吸油率达到82.14%,远远高于原淀粉,吸附性能良好。
Using corn starch as raw material , corn porous starch was prepared by enzyme hydrolysis method.Its parameters, such as enzyme concentration , the ratio of enzyme, reaction time, reaction temperature , starch concentration , and pH conditions were investigated .The optimal conditions for preparation of porous corn starch were determined by single factor experiment .The optimal conditions were enzyme concentration 1.2%,enzyme ratio 1∶2,the reaction temperature 55℃,the reaction time 12 h,the starch concentration 30%and pH 6.0.The oil absorption ratio of porous starch was 82.14%,far higher than the original starch adsorption performance .
基金
济南市科技成果转化项目(201013035)
济南市企业创新计划(201101224201013035)
关键词
多孔淀粉
复合酶解
吸附性能
porous starch
composite enzymatic hydrolysis
oil absorption ratio
