The substances contained in tea are vitamins, fluoride, sugar, tea polyphenols, amino acids, alkaloids and so on. Tea, commonly known as tea, generally includes leaves and buds of tea trees. Alias tea, tea, tea, tea. Tea beverage made of tea is one of the three major beverages in the world.

1, vitamins: Tea contains a variety of vitamins, mainly vitamin C, vitamin B 1, vitamin B2, folic acid, nicotinic acid, vitamin E and so on. It is an indispensable nutrient for the human body;

2. Fluoride: Generally, food contains little fluorine, while tea is rich in fluorine;

3. Sugar substances: Sugar substances in tea, including monosaccharides, oligosaccharides, polysaccharides and a small amount of other sugars. Monosaccharide and disaccharide are the main components of soluble sugar in tea. Polysaccharides in tea mainly include cellulose, hemicellulose, starch and pectin.

4. Tea polyphenols: the main chemical component in tea, which is the general name of more than 30 phenolic substances in tea. It tastes bitter, and the content of tea polyphenols in green tea is the highest. Tea polyphenols have anti-aging and anti-radiation effects;

5. Amino acids: Theanine in tea is a unique amino acid in tea trees. It is very soluble in water and tastes fresh and sweet, similar to the fresh taste of monosodium glutamate. It is rare in general plants and is also a characteristic substance in tea trees.

6. Alkaloids: The alkaloids in tea are mainly caffeine, which has the effects of excitement and diuresis, so tea is a good stimulant and diuretic.