Study Of Extruder Technology To High Fibre Food

This thesis, wheat bran, bean dregs, and wheat germ as raw material, using SLG32-II twin-screw extrusion technology, researches in high-fiber foods Molding. This paper examines the composition of raw materials and extrusion process parameters on physical and chemical properties, also studies the process of extrusion organization changes in key nutrients, and product efficacy, the water painted clothing type and the properties of keeping shape in the water. The main conclusions are as follows:. Extrusion ratio of best raw materials:25%addition level tofu, wheat germ addition level of6%,0.8%addition level of sodium alginate, calcium lactate addition level0.4%. In this ratio, the extrusion product expansion ratio, hardness and water holding capacity and other sensory indicators, texture properties can achieve a better stateTo wheat bran, soybean residue, wheat germ as raw material, the use of response surface analysis of different operating parameters (extrusion temperature, screw speed, humidity and particle size of materials) on the product Physicochemical Properties. The results showed that:the hardness increased with the extrusion temperature, humidity, and with the materials, the increase of particle size reduction; extrusion products, extrusion temperature and water holding capacity of materials as the humidity increased first and then minus Small, with the increase of particle size, screw speed on the hardness and the impact of lower water holding capacity; extruded products, water-soluble protein with the extrusion temperature, screw speed, humidity and particle size of materials Increases then decreases By squeezing on water, protein, fat, crude fiber, starch, enzymatic determination of glucose and other physical and chemical properties before and after extrusion proved significant. Compared with before extrusion, the moisture content was significantly lower protein content, fat content, starch content, hydrolysis of glucose concentrations are decreased, while the increase in crude fiber contentBy examining the product of the water time to study the product after extrusion coating effects and clothing type and type retaining in the water by controlling the concentration of sodium alginate, calcium lactate content, drying temperature and drying time and other factors, the optimum parameters,1%sodium alginate concentration, calcium lactate content of0.4%, drying temperature is60℃,drying time is20min...