食用菌菌糠双螺杆挤压膨化工艺的优化

The Optimization of Double-Screw Extrusion Technology by Spent Edible Fungi Substrate

以混合食用菌菌糠为原料,以菌糠粗纤维降解率作为评价参数,采用边心响应面设计(Box-Behnken Design,BBD),考察食用菌菌糠双螺杆挤压膨化中4个重要因素,并优化菌糠双螺杆挤压膨化工艺。结果表明,混合食用菌菌糠修正后最佳挤压膨化工艺条件为:菌糠水分含量30%,机筒温度160℃,螺杆转速为125 r/min,进料速度100 kg/h,在此工艺条件下,食用菌菌糠的粗纤维降解率平均为(40.86±0.18)%。

The Double-screw extrusion technology of spent edible fungi substrate（SMS）has been studied and optimized though four facters Box-Behnken design（BBD）of response surface method（RSM）,as index by curde fiber degradability.The optimal technology condition were material moisture of SMS 30 %,extrusion temperature 160 ℃,screw speed 125 r/min and feeding speed 100 kg/h,the crude fiber degradability of mixture SMS could reach up（40.86±0.18）% under this extrusion technology condition.