响应曲面法优化谷物复合挤压膨化最佳工艺参数的研究

Study on the Best Technological Parameters of Grain Complex Extruding Based on Response Surface Methodology

以小米、大麦和豆粕为原料(8∶1∶1),以德国进口的DSE-25型双螺杆挤压膨化实验室工作站为膨化设备,利用响应曲面法优化原料水分含量、加工温度、螺杆转速和喂料速度4个工艺参数,最终确定产品挤压膨化的最佳工艺参数为物料含水量为18.13%、加工温度为163.85℃、螺杆转速为176 r/min、喂料速度为30 r/min。此时,产品的膨化度为3.33,糊化度为98.52,达到最佳膨化效果。

This paper takes millet, barley, and bean pulp （with the rate of 8∶1∶1 ）as research material, makes use of Germany-imported DSE-25 double screw extruding and swelling experiment work station as the research facility and exploys Response surface methodology （RSM） as the research method to make a study on the four technological parameters , namely, material moisture content, processing temperature, screw speed and feeding speed and finally determine the best technological parameters of the products in the process of extrusion and swelling are designed as follows：Material moisture 18.13%, production temperature 163.85℃, screwing speed 176r/min, feeding speed 30r/min. at this time, the swelling degree is 3.33, and the gelatinization degree is 98.52, which is the perfect swelling expectation.