制备条件对玉米醇溶蛋白与小麦谷朊粉复合膜性能影响

该实验研究玉米醇溶蛋白添加量、增塑剂PEG400添加量、液固比、温度对由玉米醇溶蛋白与小麦谷朊粉制得复合膜性能影响。结果表明,复合膜断裂延伸率与抗拉强度分别在玉米醇溶蛋白添加量为20%和60%时达最大值;复合膜断裂延伸率和抗拉强度随PEG400添加量增加分别增大和减小;复合膜断裂延伸率在加热处理温度为60℃时达最大值,而抗拉强度随加热处理温度升高逐渐增大;复合膜断裂延伸率和抗拉强度在液固比为8∶1时分别达到最小值和最大值。

Effect of preparing conditions on mechanical properties of composite film based on zein and gluten

In this research,effect of the ratio of zein,plasticizer,temperature,liquid/solid ratio on the properties of composite film based on zein and gluten w as studied. The results showed that Elongation( E) and Tensile Strength( TS) of the film was biggest when the ratio of zein was 20% and 60% respectively;E of the film increased along with PEG 400 added gradually,but TS was reduced;E of the film was biggest when the treat temperature of protein solution was 60℃ and TS increased constantly as the temperature was raised;E of the film was smallest and TS was biggest while liquid/solid ratio was 8∶1.