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Catethin introduction and application
Oct 10, 2017


Appearance: white to yellow powder or irregular crystal

Bouquet: no special odor

Solubility: slightly soluble in cold water, ether, soluble in hot water, ethanol, glacial acetic acid and acetone, insoluble in benzene, chloroform and petroleum ether.

Solubility: soluble in methanol.

Source of extraction: tea leaves

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Catechin (Catechin), also known as tea tannin and catechol, is a general term for the flavanone of tea. Catechin is one of the most important polyphenols in tea, which accounts for about 75% to 80% of tea polyphenol content. It is also one of the sources of tea's bitter taste. 


Catechin is mainly divided into four types: epicatechin (Epicatechin EC), epigallocatechin (Epigallocatechin EGC), epicatechin gallate (Epicatechin gallate ECG) and epigallocatechin gallate (Epigallocatechin gallate EGCG).

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Main function:


1.controlling obesit

Drinking green tea can reduce cardiovascular and cancer risk. The main reason is that green tea is rich in flavonoids, especially catechins. A large number of clinical trials have demonstrated that catechins have cellular regulatory and antioxidant functions. It has a certain effect on controlling obesity.


2.pharmacological action

Catechin is an important component of tea. It has many functions, such as preventing and treating cardiovascular diseases and preventing cancer. Dextrorotation catechin and reduce capillary permeability, diarrhea, bleeding, antiviral, antifungal, inhibition of ACE and prevention of gastric ulcer and other effects.


3.Industrial field

It is a reducing phenolic compound, easily oxidized by air in aqueous solution, and is often used as an antioxidant. Also can be used to dye and tanning industry.