制备条件对玉米醇溶蛋白膜机械性能的影响  

Effects of preparation conditions on the mechanical properties of zein film

作　　者：贾祥祥[1] 郭兴凤[1] 鲁亚楠[1] 吴晓华[1] 曲孟[1] 崔和平[1] 

机构地区：[1]河南工业大学粮油食品学院,河南郑州450052

出　　处：《粮食与饲料工业》2012年第7期36-40,共5页Cereal & Feed Industry

基　　金：河南工业大学2010年研究生科技创新基金项目资助(10YJS017)

摘　　要：以玉米醇溶蛋白为原料制备蛋白膜时,研究了乙醇浓度、蛋白质浓度等制备条件对蛋白膜机械性能的影响。在单因素实验基础上,以蛋白质浓度、甘油添加量、聚乙二醇400添加量、半胱氨酸添加量4个因素为变量进行响应面优化,结果表明:当乙醇体积分数为75%、水浴成膜温度70℃、蛋白质浓度0.103 4g/ml、甘油质量分数30%、聚乙二醇400质量分数24%、半胱氨酸质量分数0.80%时,蛋白膜的拉伸强度为7.5MPa,断裂延伸率为202.7%。The effects of ethanol concentration, zein concentration and other preparation conditions on the mechanical proper- ties of zein film were investigated. Based on single factor experiment, 4 factors as variables including protein concentration, the addition of glycerol, polyethylene glycol 400（PEG400） and cysteine were optimized by response surface methodology. The results showed that： As ethanol concentration of 75% （v/v）, film-forming temperature of 70%, protein concentration of 0. 103 4 g/ml, glycero 30 % （w/w）, PEG400 24 % （w/w）, cysteine 0.80% （w/w）, TS of the zein films was 7.5 MPa, and EB of that was 202.7%.

关 键 词：蛋白膜 玉米醇溶蛋白 机械性能 制备条件 

分 类 号：TS201.21[轻工技术与工程—食品科学] TS213.4[轻工技术与工程—食品科学与工程]