1. After extruding, the protein molecules are rearranged neatly, with the same direction structure and porous tissue like meat, so it has excellent water retention and chewing sensation.

2. After processing under short-term high temperature, high moisture and high pressure, all kinds of harmful substances (trypsinase inhibitor, urease, saponin and hemagglutinin) contained in soybean were eliminated, and the absorption and digestion ability of human body to protein was improved, and the nutritional value increased significantly.

3. When puffing, the bad odor of soybean can be removed and the gas-producing ability of soybean protein can be reduced due to the rapid decompression and explosion at the outlet.

4. Soybean tissue protein has good oil-preserving property. It is used to make food clean and not greasy.

5. Easy to use, soak in room temperature water for 30 minutes, then add to make all kinds of food.

6. Soybean tissue protein does not contain cholesterol, and people with cardiovascular diseases can safely eat it.

7. Soybean tissue protein is an ideal plant protein, which contains eight essential amino acids (leucine, isoleucine, lysine, methionine, threonine, tryptophan, phenylalanine and valine).

8. Soybean tissue protein can be divided into flake, bulk and granular in shape, and primary and red in color, so that it can be used more widely.

This paper briefly introduces the matters needing attention in the use of protein food extruding machinery.

First of all, we should pay attention to the fact that the ground or bracket of the extruder must be firm and level, and can withstand the working conditions of the machine at full load, otherwise it will affect the performance of the extruder; in addition, we should also pay attention to the thorough cleaning of the pipeline after the installation of the water and steam pipes, so as to avoid the residue in the pipeline clogging the valves or pipe fittings; and cause unnecessary trouble. It should also be noted that the installation position of the field control cabinet should be suitable for production operation, equipment maintenance and maintenance.