(1) Degreasing
Soybean defatting methods are divided into two types: squeezing method and leaching method, which are usually carried out under oil. The pressing method is divided into two types: ordinary pressing and screw pressing.
(2) Separation
The so-called soy protein isolate is a high-purity soy product from the product point of view. The protein content of isolated soybean is as high as 90% or more. Produce isolated soybean protein at home and abroad
The treatment is mainly alkaline extraction and acid precipitation. Therefore, beating and callback are also required to improve the dispersibility of protein and the applicability of the final product.
(3) Dry
Using spray drying method. The spray-dried slurry concentration is usually between 12% and 20%, depending on the viscosity. The inlet temperature of the spray tower is 160～170℃, and the temperature of the tower body is 95～
100℃, the moisture discharge temperature is 85～90℃. After drying, the separated protein can be supplied to the next channel after inspection
(4) Spinning
The production of soybean protein fiber is a wet spinning process, which is similar to other wet fiber production. It is divided into two stages: slurry preparation and spinning and post-processing. After drying, oiling, curling and cutting, packing and finishing
