1, sugar
Sugar is an important organic compound widely distributed in nature. Sucrose, starch in grains, cellulose in plants and glucose in human blood are all sugars. Sugar plays an important role in the process of life activities and is the main source of energy needed by all living things to maintain life activities. The most important sugars in plants are starch and cellulose, and the most important polysaccharide in animal cells is glycogen.
2. 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.
3. protein
Protein is an important part of all cells and tissues in human body. Eating more protein's eating habits will increase the risk of cancer. All important components of an organism need protein's participation. Generally speaking, protein accounts for about 18% of the total body mass, and the most important thing is related to life phenomena.
4. Minerals
Minerals are natural compounds or elements in the crust. Also known as inorganic salts, it is the general name of inorganic substances in human body. It is the general name of various elements that constitute human tissues and maintain normal physiological functions, and it is one of the seven essential nutrients for human body.
5, 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.
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Baidu encyclopedia-sugar
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