Soybean protein product types and raw material processing

There are two soy protein products: soy protein powder and textured soy protein.

Powdered soy protein products are products rich in soy protein obtained by degreasing, removing or partially removing carbohydrates from soybeans as raw materials. Depending on the protein content, they can be divided into three types: (1) soy protein powder (soy flour), protein content 50-65% (dry base meter); (2) soy protein concentrate (soy protein concentrate), trade names such as Solcon, Kangtu.com Tomson Biogen protein powder and Health Yison soy high calcitonin powder, with a protein content of 65-90% (dry basis). Products with emulsifying and gelling functions obtained by physical modification from soybean protein concentrate are called functional soy protein concentrate (Solcon S), whose trade name is Solcon S. (3) soy protein isolate (soy protein isolate), trade name such as Solpro, contains more than 90% protein (dry base meter).

Organized soybean protein is a product with a tissue structure similar to meat that is obtained by extrusion cooking process from powdered soybean protein products. Depending on the protein content, it can be divided into two types: (1) textured soy protein flour, with 50-65% protein (dry base), commercial products such as Soytex, (2) organized soy protein concentrate, English name textured soy protein concentrate, trade name such as Kangtai protein content 70% (dry base meter).

Processing of raw materials

Most of the commercial soybean protein products we are exposed to are nonfat soybean protein products, and the main raw material source is low-temperature nonfat soybean meal.There are two processing methods for low-temperature defatted soybean meal: one is subcritical low-temperature extraction of butane, the other is low-temperature leaching with No.6 solvent (A, B cylinder or flash distillation). The protein content of defatted soybean meal can reach more than 50% after low temperature leaching.