Protein is the material basis of life, an organic macromolecule, a basic organic substance that constitutes cells, and the main undertaker of life activities. Without protein, there would be no life. Protein participates in every cell and all important parts of the body. Protein accounts for 65,438+06% ~ 20% of the body weight, that is, there are about 9.6 ~ 65,438+02 kg of protein in a 60kg adult. There are many kinds of protein in human body, with different properties and functions, but they are all composed of more than 20 kinds of amino acids in different proportions, which are constantly metabolized and updated in the body.
The role of protein in human body protein is the main functional molecule in cells. Except for some types of RNA, most other biomolecules need to be regulated by protein. Protein is also one of the most abundant molecules in cells. For example, protein accounts for half of the weight of E.coli stem cells, while other macromolecules such as DNA and RNA account for only 3% and 20% respectively. All protein expressed in a specific cell or cell type are called protein groups of corresponding cells.
Protein can play a variety of functions in cells, covering all aspects of cell life activities: enzymes that play a catalytic role; Participate in the regulation of organism metabolism, such as insulin; Some protein have the function of transporting metabolites, such as ion pump and hemoglobin; Play a storage role, such as a large number of protein in plant seeds, as a reserve during germination; Many structural proteins are used in the formation of cytoskeleton, such as myosin; There are also a large number of protein involved in the process of immunity, cell differentiation and apoptosis.
Protein is rich in food 1. Eggs?
Eggs are nutritious, especially in protein. Eggs are one of the best sources of nutrition for human beings. Eggs contain a lot of vitamins and minerals and have high biological value. Protein is the best food in protein. Studies show that every100g of eggs contains protein12.8g and fat11~15g. Therefore, if you want to supplement protein, you can usually eat some eggs, but you should pay attention to eating eggs: don't drink tea immediately after eating eggs; And don't eat undercooked eggs.
2. Meat (chicken, duck, pork, beef, etc. )
Eating some meat to supplement protein is also very effective. The content of protein in meat is between 10%-20%. Chicken and duck have always been at the top of the healthy food list. Nutritionists suggest that we eat more of these two foods in our daily life to ensure the nutrition and health of human body. At the same time, they are also rich in protein, but it is recommended to peel them when eating, which can better reduce the intake of unhealthy fat.
3.fish?
Fish is not only rich in trace elements, but also high in protein. The fat contained in fish is an unsaturated fatty acid that is really beneficial to human health; This fatty acid is very beneficial to human health, and moderate intake can help the human body effectively lower cholesterol. Moreover, some nutrition experts suggest that obese people can eat more fish, which can avoid obesity and prevent various chronic diseases, which is very healthy. For those who want to supplement protein, it is ideal to eat some fish.
4. Beans (soybeans and bean products)
Protein content in beans is also very rich. There are many kinds of beans, such as broad beans, soybeans, mung beans and peas. It is found that there are almost no bad fats in bean products, and all fats are unsaturated fatty acids, which are very beneficial to human body. Moreover, protein contained in bean products is also very rich; And is easily absorbed by the human body.
Protein should not be supplemented in excess. If you want to supplement protein at ordinary times, you can choose to eat the four foods mentioned above. You can choose these foods for cooking according to your favorite taste, which can not only supplement the protein needed by your body, but also supplement other nutrients. However, you should pay attention to supplement protein, don't be too full, just supplement it in moderation.