挤压膨化工艺参数对水酶法提取大豆总蛋白得率的影响  

Effects of Extrusion Parameters on Recovery of Soybean Protein Extracted by Aqueous Enzymatic Method

作　　者：李杨[1] 江连洲[1,2] 吴海波[2] 许晶[1] 吴霞[1] 杨柳[1] 

机构地区：[1]东北农业大学食品学院,哈尔滨150030 [2]东北农业大学国家大豆工程中心,哈尔滨150030

出　　处：《中国粮油学报》2009年第12期47-51,共5页Journal of the Chinese Cereals and Oils Association

基　　金：农业部现代大豆产业技术体系建设项目(nycytx-004)

摘　　要：采用水酶法结合挤压膨化预处理提取大豆蛋白。通过响应曲面分析方法以总蛋白质得率为考察指标,确定最佳挤压膨化工艺参数为:模孔孔径为12 mm,物料含水率为17%,螺杆转速为94 r/min,套筒温度为92℃。经过验证与对比试验可知在最优挤压膨化工艺条件下总蛋白得率可达到94.17%左右,比传统的湿热预处理后酶解的总蛋白得率提高了近15%。Aqueous enzymatic extraction combined with extrusion pretreatment was used to produce soybean protein.The response surface methodology was adopted using total protein recovery as terminal parameter to optimize the extrusion parameters.Results： The optimal extrusion parameters are die diameter 12 mm,moisture 17%,rotation speed 94 r/min,and barrel temperature 92 ℃.The total recovery of soybean protein is 94.17% at the conditions,15 percent point higher than the protein recovery by using the traditional method with hydrothermal pretreatment.

关 键 词：挤压膨化 水酶法 大豆蛋白 响应曲面 

分 类 号：TS214[轻工技术与工程—粮食、油脂及植物蛋白工程]