Tannic acid is in a class of chemicals called tannins, which are found in many plants. Tannic acid refers to tannins that can be dissolved in water, as opposed to the other type, or condensed tannins.According to Cornell University Department of Animal Science, tannins are a group of compounds known as plant polyphenols, which cause proteins to bind and form complexes. 

1.Tannic Acid With the function of antioxidant and antimicrobial;
2.Tannic Acid has the effect on improving the body disease-resistant ability, liver and gastrointestinal system function ;
3.Tannic Acid With the function of treating chronic diarrhea and dysentery;
4.Tannic Acid With the function of dispelling heat, eliminating irritability, diuretic, cooling blood and detoxification;
5.Tannic Acid With the function of enhancing immunity.
1.Tannic Acid are applied in food feild,can be produced into wine, canned, condensed juice and other more nourishment.
2.Tannic Acid are applied in cosmetic industry,gallic acid used as active ingredients of skin care products.
3.Tannic Acid are Widely applied in pharmaceutical.
4.Tannic Acid are applied in dyes, chemicals as well as in the analysis of rare metals.