Process Optimization of High Dietary Fiber Edible Mushroom Extruded Nutrition Engineering Rice

This study aimed to develop a new type of high dietary fiber edible mushroom nutrition extruded nutrition engineering rice.In this study, rice, corn, common edible fungus (Auricularia auricula, hazel mushroom, Lentinus edodes, Tremella) were used as raw materials for preparing high dietary fiber extruded edible fungus nutritional engineering rice. Using programming to determine the raw materials were corn and hazel mushroom, and the ratio of corn to hazel mushroom was 92.4:7.6.On the basis, the single factor combined with the response surface method were used to optimize the extrusion process of the nutrition engineering rice with twin-screw extruder. Results showed that the optimal conditions of extrusion process were concluded as follows:Screw speed 126 r/min, water contents 26%, and diehead temperature 51℃. Under these conditions, the prepared extruded nutrition engineering rice had high rehydration rate and texture comprehensive evaluation value, which were 185.35%±3.17% and (78.37±1.25) scores, respectively. And the dietary fiber contents of engineering rice was about 7.3%. The prepared extruded nutrition engineering rice was homogeneous light brown, with a grain size close to that of ordinary rice and a special odor of mushrooms in this paper. The development of this product could provide a new type of extruded nutrition engineering rice for the market, and provided a certain supplement for the promotion of nutrition engineering rice.