The important role of soy protein isolate on the human body

The Chinese Nutrition Society recommends protein intake: 70-90g/day for adults; an additional 20g per day for pregnant women, and an additional 25-30g per day for lactating mothers. The World Health Organization (WHO) recommends: 140g for men and 106g for women.

Both animal protein and plant protein are composed of amino acids, but their quality is different (depending on the content and proportion of essential amino acids). The human body has a total of 8 amino acids that must be absorbed from food, called essential amino acids.

The quality of animal protein is often closer to the needs of the human body (after all, humans are also animals), and the absorption rate is higher. It is called high-quality protein or complete protein. Plant proteins often lack 1-2 essential amino acids (this does not mean that they are completely absent, but the content is low, which is quite different from the needs of the human body).

The intake of plant protein and animal protein should be basically equal, half and half. Generally, plant protein has a higher content than animal protein, is obtained from a wide range of sources, and has a large daily intake. Moreover, in the process of processing and production, the cost and technology are relatively easy and cheap.
However, plant protein is protein from plants after all, and there is a certain gap between the type and relative amount of protein and the requirements of the human body.

People often believe that if they do not supplement animal foods, they will be malnourished, which will induce a series of health problems. But this view turns out to be wrong. In addition, the latest scientific research in the United States shows that adults who grew up eating milk are much more likely to develop allergies than those who grew up breastfeeding.

In addition, animal protein foods contain high sulfur content, and many high-protein meats are often accompanied by high fat and cholesterol. Long-term consumption will increase the burden on the kidneys, liver and gallbladder, and harm human health.
Soybeans (including soybeans, black soybeans, green soybeans, and edamame) are one of the few common plants rich in high-quality protein. In addition to methionine (which can be combined with methionine-rich cereals), the rest are essential The proportion of amino acids meets the needs of the human body, and the absorption rate is close to that of meat. Other non-animal foods rich in high-quality protein include quinoa and yeast. In addition to being rich in high-quality protein like animal foods, soybeans are also rich in milk and eggs. Nutritional characteristics (rich in calcium and phospholipids).

The protein content of soy protein isolate is more than 90%, there are nearly 20 kinds of amino acids, and it contains essential amino acids for the human body. It is rich in nutrients and contains no cholesterol. It is one of the few plant proteins that can replace animal protein.

The role of soy protein isolate

1. Helps lower cholesterol when combined with a low-fat diet
Cardiovascular disease is the number one killer of adults. The most direct cause is excessive dietary cholesterol intake. Research has found that eating soy protein isolate can reduce the concentration of cholesterol in the serum, increase good cholesterol, and inhibit the oxidation of bad cholesterol. , remove junk fat on blood vessel walls and improve blood vessel health. In 1999, the US FDA issued an authoritative health statement: Eating low-saturated fat and low-cholesterol foods containing 25 grams of soy protein per day can reduce the risk of cardiovascular disease. The Dietary Nutrition Guidelines for Chinese Residents also specifically recommend that we pay attention to the intake of soybeans in our daily diet. People who already have cardiovascular disease or who are on the verge of developing it should increase their intake of soy protein isolate and reduce their intake of animal protein in their diet.

2. Consistent consumption may help reduce the risk of certain cancers.
Although a large number of people die from cardiovascular disease, people are generally more afraid of getting cancer. Soy protein may reduce the risk of certain cancers. Studies have shown that eating soy protein foods can reduce the incidence of breast cancer in women by 20%, prostate cancer in men by 35%, and gastrointestinal cancer by 30%. It also has a certain inhibitory effect on the occurrence of thyroid cancer.

3. It has unique sports nutritional value and is a healthy food for athletes and dieters.
Soy protein can help build and maintain muscle mass, and can restore and relieve muscle soreness, redness, and fatigue caused by exercise. It is sports nutrition that relieves muscle soreness and fatigue and helps to quickly recover physical strength. Today, obesity is increasingly becoming a concern for modern people. Compared with animal protein, soy protein can promote the secretion of glucagon and accelerate the use of fat stored in the body to provide energy. It is a very good healthy weight loss nutrition.

4. Promote calcium absorption and utilization and improve bone health.
Studies have found that high intakes of animal protein will increase the excretion of calcium by the kidneys. In a study of 755 Japanese men and women, it was found that there is a significant direct relationship between calcium excretion and animal protein intake, but the intake This does not happen with soy protein. The conclusion is that compared with animal protein, soy protein does not increase calcium excretion, but promotes calcium absorption and utilization, prevents osteoporosis, increases bone density, and maintains bone health.

5. Transport nutrients and balance endocrine
Protein is the carrier and receptor of various nutrients such as calcium, iron, and zinc, and can help the absorption and utilization of these nutrients. It can also enhance immunity and promote growth. Soy protein isolate can also help alleviate the frequency and severity of menopausal hot flashes and calm your mood.