Sugar mainly includes unsweetened starch and sweet maltose. It is the most important energy substance in the human body and plays an important role in the human body. As biological energy, such as muscle contraction and nerve conduction. As a carbon source for the biosynthesis of other substances. As the structural substance of organisms.

Glycoproteins and glycolipids have many physiological functions, such as cell recognition and immune activity. As substances for storing nutrients (such as starch and glycogen) or as cell walls of animal exoskeletons and plant cells (such as chitin and cellulose). Ribose is a five-carbon aldose, an indispensable substance for various cofactors, and also the skeleton of some genetic material molecules. It is closely related to immune system, fertilization, disease prevention, coagulation and growth.

Extended data

Sugar source:

Sugar is an important organic compound widely distributed in nature. Sucrose eaten by wisdom, starch in grains, cellulose in plants and glucose in human blood are all sugars.

A variety of foods are rich in sugar, including fruits, soft drinks, bread, pasta, beans, potatoes, rice bran, rice and wheat. Sugar is a common energy source in living things, but it is not a necessary nutrition for human beings. Sugar is not an essential component of any other molecule, and the human body can also get energy from protein and fat.

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