As we all know, protein, fat and sugar (also known as carbohydrates) are the three major nutrients of the human body and the three basic substances that make up the human body. Among these three basic substances, protein is called the material basis of all life, is an important part of the muscle cells, and is the main raw material for the renewal and repair of human tissues. Every tissue of the human body, hair, skin, muscle, bones, internal organs, brain, blood, nerves, endocrine, etc., is composed of protein.
People get nutrients from food to make the various proteins that the body needs to sustain life.
Protein is composed of amino acids, there are more than twenty kinds of amino acids that constitute human protein, among these twenty kinds of amino acids, there are eight kinds that cannot be synthesized by human body and must be obtained from food, called essential amino acids. The other ten or so can be obtained from the nutrients ingested by the body.
People ingest food, which is broken down in the body. One of them, protein, is broken down into complex acid molecules. The body uses these amino acids to recombine to form the proteins that make up the structure of the body and sustain life activities. For amino acids, other than the eight essential amino acids, other types of amino acids can be synthesized in the body through other components. Thus, to evaluate the nutritional value of a food, one is to look at its protein content, and the other is to look at the content of essential amino acids animals have similar material structure and physiological properties to humans, and the content of essential amino acids in their bodies is close to that of the human body, so people have long used animal food as an important source of protein for the human body, especially in the past two decades, with the improvement of people's living standards. The consumption of meat food is greatly increased
Although meat provides people with high protein nutrition, at the same time, the cholesterol and saturated fatty acids contained in meat food also pose a health hazard to people. As we all know, modern medical research has confirmed that excessive intake of cholesterol and saturated fatty acids can damage the cardiovascular system, resulting in thick blood, thrombosis, atherosclerosis, hypertension, fatty liver, and insufficient blood supply to the heart and brain, which can lead to heart attacks and strokes. People now call these diseases "diseases of affluence", and I'm sure there are many examples of these "diseases of affluence" around your friends. So nowadays on many occasions people are advocating a light diet, our ancestors also have a saying that "fish produces fire, meat produces phlegm, radish and cabbage keep safe". Although there is some truth in the saying, but the radish and cabbage alone can not guarantee the normal supply of camping beauty.
Soybean, a high-quality crop, its protein content is up to 38% or more. Its amino acid composition, and milk protein is similar. In addition to low methionine content, the rest of the essential amino acids are abundant. In addition, soybeans contain unsaturated fatty acids, calcium, potassium, B vitamins, isoflavones and other nutrients.
Soybean cultivation originated in China, and our old ancestors created many ways for us to make and eat soybeans, tofu, bean curd, curd milk, bean drums, bean paste .... In the long agrarian society where animal husbandry was not developed, soybeans served as an important source of protein. I remember when I was a child in the countryside, only the Mid-Autumn Festival and the New Year's Eve can eat some meat, usually is tofu and pickled soybeans to improve the food, I guess the partners who grew up in the countryside in those days, most of them are the same, right?