Method for preparing wheat-drawn protein by twin-screw high-humidity extrusion and wheat-drawn protein

Abstract

The invention discloses a method for preparing wheat texturized fiber protein by twin-screw high-moisture extrusion. The method comprises the following steps: (1) providing raw materials which contain uniformly mixed wheat protein, starch and a texturizing agent; (2) inputting the raw materials into a solid feeder of a twin-screw extrusion system and carrying out secondary stirring and mixing, inputting the mixture into a cavity of the twin-screw extrusion system and mixing the mixture and water, and then extruding; and (3) drying the product obtained in the step (2) and cooling so as to obtain the wheat texturized fiber protein. The invention also provides wheat texturized fiber protein prepared by the above method. By adopting different screw-thread sets to change extrusion engagement mode of the screw, effect degrees of gluten protein are different so as to achieve finer and denser fiber effects. Supplemented with the texturizing agent, low texturizing degree, long rehydration time and poor rehydration effect of existing texturized fiber protein products can be overcome, and finally a wheat texturized fiber protein product with high fibrosis degree and high quality is obtained.

Description

technical field [0001] The invention relates to a method for producing and modifying wheat silk protein, in particular to a method for preparing wheat silk protein by twin-screw high-humidity extrusion. [0002] technical background [0003] Wheat is the second largest crop in my country and occupies an important position in China's grain production. At present, my country's wheat consumption accounts for about 23% of the total grain consumption, which is mainly distributed in people's staple food and convenience food processing industry. [0004] Protein is an indispensable nutrient for human beings. Wheat protein is the main by-product of wheat starch processing. It is rich in resources, and the world's annual output exceeds 600,000 tons. Wheat gluten is commonly known as gluten, and its protein content is 70% to 80%. As a high-protein material, gluten also contains a variety of amino acids, and its nutritional value is extremely high. The annual output of wheat protein i...

AI Technical Summary

Problems solved by technology

[0007] At present, there have been many reports on soybean protein and peanut protein imitation meat products and their preparation methods, but there are still relatively few studies on wheat drawing protein products, and there are still some problems in the quality of the obtained products, such as long rehydration time and texture degree. Low, poor quality indicators such as product elasticity

For example, CN102640838A discloses a production method of wheat textured protein, which uses gluten as a raw material to produce alternative meat products rich in fiber structure, which has defects such as low rehydration and poor elasticity.

CN104322858A discloses a method for preparing wheat protein by twin-screw extrusion, using gluten and starch as raw materials. Although the patent does not add any additives, the extruded product also has a wire drawing effect, but it does not solve the current production of wheat textured protein. The biggest problem in the application is that the rehydration is extremely slow and difficult to soak. After rehydration, dandruff and soft collapse will bring great inconvenience to the application of subsequent products.

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