What are the nutrients in food?

There are five or seven kinds of nutrients in food: sugar, lipid, protein, vitamins and inorganic salts.

First of all, sugar

Carbohydrates are polyhydroxyaldehydes, polyhydroxyketones and organic compounds that can be hydrolyzed to polyhydroxyaldehydes or polyhydroxyketones, which can be divided into monosaccharides, disaccharides and polysaccharides.

Second, lipids.

Lipid is one of the important nutrients needed by human body, which provides energy and essential fatty acids for human body and is a component of human cell tissue. The human body needs to consume a certain amount of lipid substances every day, but excessive intake will lead to the occurrence and development of diseases such as hyperlipidemia and atherosclerosis.

Third, protein.

Protein is the material basis of life, an organic macromolecule, a basic organic substance that constitutes cells, and the main undertaker of life activities. There is no life without protein. Amino acids are the basic components of protein.

Fourth, vitamins.

Vitamin is a trace organic substance that people and animals must obtain from food in order to maintain normal physiological functions, and it plays an important role in the process of human growth, metabolism and development. Vitamins in the body neither participate in the formation of human cells nor provide energy for the human body.

Verb (abbreviation of verb) inorganic salt

Inorganic salts are mineral nutrients existing in the body and food. Inorganic salts in cells mostly exist in the form of ions, which are composed of organic and inorganic substances.