Like fish, meat, eggs, milk and other animal foods, soybean contains better protein and amino acid pattern, which is more in line with the needs of human body and has higher nutritional value.
Although soy protein is a better protein, but there are better than. Soy protein has less of an essential amino acid called methionine, not only less than animal protein, but also less than some cereal proteins. If soybean is used as feed for livestock, it is necessary to add some methionine to meet the needs of livestock animals. In addition, lysine in soybean protein is not stable, which is lost in the processing of soybean products, resulting in insufficient content. Therefore, soy protein has less nutritional value than cow's milk protein (whey protein), egg protein, or meat protein.
Actually, the advantage of soybean is not that soy protein is better than animal protein, however soybean and its products do not contain cholesterol, adipose content is low, and mainly be unsaturated fatty acid, this is rare and valuable to the cardiovascular disease such as obesity to prevention and cure and hypertension, abnormal blood fat, coronary heart disease. To that end, in 1999, FDA allowed soy manufacturers to claim that "soy protein may reduce the risk of heart disease" and that "eating 25 grams of soy protein per day as part of a diet low in saturated fat and cholesterol may reduce the risk of heart disease."
In addition, soybean is one of the plant foods with high protein content and good quality, and it is rich in lysine, which can improve the overall dietary nutritional value through complementary effects when eaten together with cereals.
