中文摘要：

丙酸是一种非常有效的增塑剂，它大大降低了大豆蛋白可降解材料的吸水率，可用来代替甘油。采用响应面分析法对丙酸增塑的大豆分离蛋白可降解材料最佳加工条件进行了探讨，确定最佳加工条件为：丙酸添加量35％、成型温度117℃、成型压力20MPa、成型时间5min。

英文摘要：

Propionic Acid is a very effective plasticizer. It can greatly degrade water absorption rate of degradable material prepared from soybean protein isolate and can be used as substitute of glycerin. The optimal processing conditions for degradable material prepared from soybean protein isolate plasticized by propionic acid were investigated by means of response surface method. The optimal processing conditions were determined： adding amount of plasticizer 35%, processing temperature 117℃, pressure 20 MPa and forming time 5 min.