酶法与碱法提取糜子淀粉的最佳工艺条件研究  

Optimal technological conditions of enzymatic and alkaline isolation procedure for starch from proso millet

作　　者：王学川[1] 李飞虎[1] 强涛涛[1] 张婷[1] 

机构地区：[1]陕西科技大学资源与环境学院,陕西西安710021

出　　处：《粮食与饲料工业》2013年第1期19-22,共4页Cereal & Feed Industry

基　　金：陕西科技大学研究生创新基金

摘　　要：采用酸性蛋白酶浸泡法和碱液浸泡法从糜子籽粒中提取淀粉。通过单因素试验确定酶法最佳提取工艺条件为:pH4.0,酸性蛋白酶体积分数2%,浸泡时间10h,浸泡温度50℃,此条件下淀粉提取率为70.12%。碱法最佳提取工艺条件为:pH11.0,料液比1∶5,浸泡时间8h,浸泡温度25℃,此条件下淀粉提取率为81.59%。The acidic protease and alkaline method were used to extract starch from proso millet. The optimal extraction con- ditions of enzymolysis and alkaline were gained by single experiments. The optimal enzymatic extraction conditions were as fol- lows： pH4.0,acidic protease content of 2% （v/v）, time of 10 h and temperature of 50℃. Under this optimal condition, the yield of starch was about 70.12%. The optimal alkaline isolation conditions were as follows., pHll. 0, solid-to-liquid ratio of 1 ： 5, time of 8 h, and temperature of 25~C. Under this optimal condition, the yield of starch was about 81.59%.

关 键 词：糜子 淀粉 酶法 碱法 提取 

分 类 号：TS235.1[轻工技术与工程—粮食、油脂及植物蛋白工程] TS234[轻工技术与工程—食品科学与工程]