There are many things that can be used to supplement protein in winter, such as protein, which we are familiar with, and lean meat that we often eat. These protein ingredients are many, and we are the easiest to get.

Extended reading:

Protein is a biomacromolecule, which is a linear polymer formed by different L-type α-amino acids. Protein is an important part of all cells and tissues in human body. All important parts of the body need protein's participation, and the most important thing is that it is related to life phenomena.

Foods rich in protein:

? Protein is an important substance that constitutes the human body, and it is also the basic substance of human life. Various tissues of the body-muscles, bones, skin, nerves, etc. Both contain protein. The material basis of growth is protein, and protein is the main component of enzyme. More than 60% of the human body is water. After removing water, about half of it is made up of protein.

The main component of muscle is protein. After removing minerals such as calcium and phosphorus, bones still contain a lot of protein, and these protein keep bones elastic and energetic. Protein is the main component of blood, lymph, tendons, skin, hair and nails. The mucosa on the surface of digestive tract and respiratory tract is also protein. Sweat, saliva and mucus all contain protein. Animal meat, such as cattle, sheep and pork. ; Poultry meat, such as chicken, duck, goose, quail, ostrich, etc. Eggs, such as eggs, duck eggs, quail eggs and fish, shrimp, crabs, etc. ; Soybeans, including soybeans, green beans and black beans, have the highest nutritional value. Dried fruits: sesame, melon seeds, walnuts, almonds, pine nuts, etc. spirulina

About nutritional value:

The content of protein in beans, peanuts, meat, milk, eggs, fish and shrimp is higher, while the content of cereals is less, even less in vegetables and fruits. The human demand for protein depends not only on the content of protein, but also on the types and proportions of essential amino acids contained in protein. Because the types and proportions of amino acids contained in animal protein are more in line with human needs, the nutritional value of animal protein is higher than that of plant protein.

In plant foods, protein in rice and flour lacks lysine, and protein in beans lacks methionine and cystine. Therefore, eat more mixed foods, and have complementary functions to improve the utilization rate of mixed protein. If proper animal protein is added, the nutritional value of protein in the diet can be improved. Although the content of protein in human milk, cow milk and eggs is low, their essential amino acids are basically the same as human body, so their nutritional value is high.

Protein is an important substance that constitutes the human body, and it is also the basic substance of human life. Various tissues of the body-muscles, bones, skin, nerves, etc. Both contain protein. The material basis of growth is protein, and protein is the main component of enzyme. More than 60% of the human body is water. After removing water, about half of it is made up of protein.

Food in protein is more expensive than ordinary food. We can mix several low-priced foods together to improve the utilization rate of protein in the body. For example, the biological values of corn, wheat and soybean are 60%, 67% and 64% respectively. If these three foods are matched in proportion, the utilization rate of protein can reach 77%.