In the United States, as early as 1896, Ms. Ellen White, the founder of the Seventh-day Adventist Church, advocated eating soy instead of meat. Later, in response to her appeal, believers developed a variety of meat substitutes made from cereals and soybeans. However, most Americans do not like to eat soybeans, but sell most of their soybeans abroad, squeeze them into soybean oil, or use them as feed.
At the beginning of the 20th century, the nutrition industry began to notice soy beans. They have successively studied and published many reports of their beneficial effects on human health. They have also made people's impression that soybeans are not delicious enough and gradually changed. In recent years, soya bean food is not only favored by vegetarians, but also has become a favorite for health-conscious consumers.
First, the nutrition of soybeans
Soy protein is sufficient to provide human needs
Whole soybeans have a hard, hard-to-digest tissue, and soybeans contain substances that inhibit the stomach's digestive enzyme Trypsin, which can affect digestibility, but can be heated or broken up (tofu, skin). Or, by using fungi to decompose the ingredients (natto, stinky tofu), etc., the digestion and absorption rate can be increased to 85-95%.
Soy protein, which contains most of the "essential amino acids" required by the human body, although it lacks one of the methionine acids, it does meet the needs of the human body. As a result of some experiments, it was found that the "protein efficiency" of soybeans, that is, the degree of protein digestion and the type of amino acids, is similar to that of milk and meat. At the same time, if you eat together with your daily or every meal with grains, nuts, seeds, etc., you can achieve "complementary effects," and increase the quality and quantity of protein.
Experts point out that the average person who takes 0.8 grams of protein per kilogram of body weight is enough for the body's needs. Therefore, it is extremely easy to take enough protein. Unless there are special circumstances (such as developing children, pregnant women, etc.), there is no need to adopt a high-protein diet. To say that excessive protein is not conducive to health.
Reduce saturated fatty acids, cholesterol and total calories
Animal foods contain large amounts of saturated fatty acids and a small amount of unsaturated fatty acids, but most plant foods are the opposite. Taking soybeans as an example, about 50% of fat is linoleic acid, which is an unsaturated fatty acid. It is a nutrient required by the human body, unlike saturated fatty acids that increase cholesterol in the body, and thus helps reduce cardiovascular disease. .
In addition, it is of interest that it contains oleic acid, which accounts for about 8% of OMEGA-3 fatty acids. Omega-3 fatty acids mainly occur in fish, which can reduce the risk of heart disease and help the baby's brain development. Although the fatty acids contained in soybean oil are not the same as the fatty acids in fish oil, after entering the body, the soybean fat can be converted into Fatty fish oils, but usually 75% Omega-3 fatty acids are lost during the baking and processing of foods. In addition, soy oil will be converted into Trans fatty acids after hydrogenation, and increase the formation of saturated fatty acids, which will adversely affect human health.
Vitamins and minerals
Soybeans, in addition to rich in protein and fat, also contain other nutrients such as calcium, iron, zinc, vitamin B and a large number of dietary fiber, which are involved in the regulation of physiological functions in the human body.
Second, reduce or prevent diseases
In recent years, scientists have discovered thousands of different botanical compounds in plant-derived foods. These substances are not nutrients, but they play a very important role in the human body.
Soybean foods have been confirmed to contain isoflavones of 15 plant compounds. They have the functions of plant estrogens, antioxidants, and protein inhibitors. Among them, Genestein and daidzein have received special attention from scientists. These isoflavones not only prevent cancer, but also reduce the risk of blood cholesterol, osteoporosis and reduce the symptoms of menopause in some women.
Isolation Clothing,Sterile Protective Clothing,Plastic Protective Clothing,Cheap Protective Clothing
GUANGZHOU HTD INTERNATIONAL , https://www.maskhtd.com