Professor Li pointed out that protein in soybean is not only high in content, but also comparable to high-quality animal protein such as eggs and milk in quality. The new evaluation method shows that soybean protein can completely meet the needs of human body for various essential amino acids (over 2 years old). From 65438 to 0977, American scientists found that soybean protein can reduce the cholesterol content in blood. A large number of clinical studies show that as long as you consume at least 25 grams of soy protein every day, you can reduce the cholesterol content in your blood and effectively prevent cardiovascular diseases.
Therefore, in 1999, the US Food and Drug Administration designated soybean as a food with health care function, and issued the approval announcement of "soybean protein health care label". According to this announcement, in the United States, if a soybean food contains more than 6.25 grams of soybean protein, it can be labeled as a "cardiovascular health care product". In 2003, the United Kingdom also announced the health labeling law of soybean protein, which is almost the same as that of the United States.
Then, if you eat more than 25 grams of soy protein every day to play its health care function, how many soy products should everyone eat every day?
"Eat at least half a piece of tofu every day." Professor Li said: "The main nutrition of tofu and soybean milk is no less than milk. The concentration of protein and calcium in tofu is even higher than that in milk, and the iron content is more than 10 ~ 20 times of that in milk.
In particular, the absorption rate of calcium and iron in tofu is high, and soybean protein can reduce the excretion of calcium. Therefore, soybean food is a kind of health food with the functions of supplementing calcium and preventing osteoporosis. Compared with calcium supplements such as milk, tofu and soybean milk are much cheaper.
In addition, compared with eating meat and drinking milk, the cholesterol content of bean products such as tofu and soybean milk is almost zero. Therefore, many nutritionists call bean products the best health food with good quality and low price. "
In recent years, scientists have also found that soybean protein can produce peptides with antioxidant, blood pressure lowering and immunity improving effects after enzymolysis. Soybean peptides have the functions of lowering blood sugar, lowering blood pressure and preventing arteriosclerosis. Traditional fermented soybean foods in China, such as douchi and sufu, contain functional soybean peptides with high activity.
In fact, epidemiological studies show that the incidence of cardiovascular disease, breast cancer and prostate cancer is much lower than that of Americans and western Europeans, because Asians have more soy products in their diets. For your health, please eat more than half a piece of tofu every day.