Industrialization technology of soybean traditional staple food

Have you ever heard of whey protein and soybean protein? Have you ever heard of "rice protein"? Whey protein is extracted and purified from milk; Soy protein is extracted and purified from soybeans; And "rice protein" is protein powder purified from our traditional staple food "rice" by enzymolysis.

As we all know, milk and soybeans are the main sources of protein in the diet, and they are also nutritious foods that many fitness friends will pay attention to supplement; Can extract protein, also feel it is a matter of course.

However, "rice" is a whole grain food, the source of sugar in the diet, and the cooked rice seen on the table; Rice is not strange to us at all, you know? Can be cooked and eaten with vegetables and meat; Even protein powder can be extracted, and it is excellent rice protein!

The main component of rice protein rice is starch, accounting for about 80-90%, which can provide the source of energy in diet.

Figure/Rice provided by nutritionists is rich in nutritional value besides starch, including fat-soluble vitamin E, unsaturated fatty acids, water-soluble vitamin B, dietary fiber and various minerals; The content of protein can account for 5-8%, which is more than that in general dairy products. (The moisture content in dairy products accounts for about 85%, and that in protein accounts for about 3.5%). Furthermore, if analyzed by protein efficiency ratio (PER), the score of rice is about 2.3, which belongs to the excellent protein with PER score above 2.0.

In addition, when evaluating the integrity of protein, nine essential amino acids (essential amino acids; Whether EAA) is enough.

Whey protein Whey protein contains about 47% EAA, and 9 essential amino acids are quite sufficient. Soybean protein and rice protein contain about 37% EAA, which is relatively small, but the content of essential amino acids is also slightly insufficient. This insufficient amount of amino acids will be called "restricted amino acids".

Figure/Nutritionist provides soy protein. The restrictive amino acid in soybean protein is methionine, while the restrictive amino acid in rice protein is lysine, but it is not much lacking, so it is easy to obtain from other foods.

Regarding the nutritional supplement of fitness, what is the content of BCAA branched-chain amino acids for people who are concerned about fitness or need nutritional supplement? Whey protein contains about 2 1%, soybean protein contains about 17%, and rice protein contains about 18%. There is little difference in the content. A study published in the Journal of Nutrition on 20 13 tells us that supplementing plant rice protein and animal whey protein after resistance training is helpful to muscle shaping and repair, and has no difference in improving body composition and sports performance.

Figure/Rice protein provided by nutritionists can also become a new choice for fitness friends. In addition, compared with whey protein and soybean protein, rice protein has the advantage of low allergenicity and contains no lactose, which will be a more suitable choice for people with allergic problems, lactose intolerance or vegetarianism.

Related applications of rice protein and food rice protein can be directly used as a nutritional supplement, directly brewed or added with soybean milk for drinking; At present, it is also used in many foods, such as bread biscuits, cereal brewing bags, vegetable double protein drinks, instant porridge, rice porridge, noodles, etc., to increase the intake of high-quality protein.

In recent years, due to the progress of processing and extraction technology, functional peptide chains can be extracted from rice protein. In some cell and animal experiments, it has been found to have antihypertensive or anti-inflammatory effects. In the future biomedical field, rice protein will have the potential to be developed into health functional food or made into medical preparations. In addition, the selection of rice protein from plants also helps to reduce carbon emissions and contribute to the earth.