Tannin is a type of polyphenolic compound that widely exists in plants. It is an important substance for plants to resist the external environment and control their growth and development. Tannins can be divided into two types, one is yellow-brown proanthocyanidin tannins, which are found in tea, coffee, wine and other foods and beverages; the other is brown urea tannins, which are found in rice noodles, vegetables Waiting for food.

Tannin has a variety of biological activities, including antioxidant, anti-cancer, antibacterial, etc., and is widely used in medicine, health products and food industry. Foods containing tannins can enhance human immunity, prevent arteriosclerosis, and also have positive effects on vision protection, analgesia, and lowering blood sugar.

An appropriate intake of tannins can bring a series of benefits. Common foods containing tannins include red wine, green tea, black tea, coffee, grapes, apples, strawberries, apricots, peaches, plantains, gardenias, etc., which can be eaten and drank in moderation. At the same time, you can also consider taking some health products and medicines rich in tannins, such as grape seed extract, tea polyphenols, rutin, etc.