The true nature of astringency! A thorough explanation of the function and health benefits of tannins

What are tannins?

Tannins are a type of substance produced by plants and are found in tea, wine, fruits, and other foods that we consume on a daily basis.

This astringent component acts as a barrier to protect plants from external enemies, and also has various functions that are useful for maintaining the health of humans.

What is the difference between tannins and catechins?

In the past, the astringent compounds found in plants were collectively called "tannins."

However, as research progressed, it became clear that many of the bitter components in tea are a specific group of substances called "catechins."

Tannin is a general term for substances with various chemical structures, and catechin is one type of tannin.

Tannins are a type of polyphenol

Tannins and catechins are a type of bitter and pigmentary component produced by plants, and belong to a group of substances broadly known as "polyphenols."

Polyphenols are a general term for compounds that cause pigments and bitterness in plants, and are known to have antioxidant properties.

The polyphenols contained in red wine and green tea are said to be beneficial to your health because of their antioxidant properties.

Functions and effects of tannins

In addition, tannins have a wide range of functions and are expected to have various effects, such as preventing lifestyle-related diseases, tooth decay, and dementia.

Also, because it easily binds to proteins, it has long been used widely in our daily lives, such as as a tanning agent and dye for leather.

Finally

As such, tannins are deeply involved in our diet and health, and are also an extremely important component that is used in plant ecology and industry.

It is expected that the various functionalities of tannins will continue to be elucidated, leading to the development of new foods and medicines.