Friday, April 30, 2021

Polyphenols of catechins

Catechins (flavan-3-ols) belong to the group of polyphenols. Catechins can be harvested from a variety of sources including many herbs, fruits, vegetables, beverages, algae, and confectionary items. But their contents and types vary considerably among various sources.

Catechins are flavonoid derivatives that play a major role in determining the taste of the tea (bitter, astringent, and slight sweet tastes) as well as possessing health benefits in disease prevention.

The four main catechins that occur in green tea are (-)-epicatechin (EC), (-) epicatechin-3-gallate (ECG), (-)-epigallocatechin (EGC), and (-)-epigallocatechin-3-gallate (EGCG). Of these catechins, EGCG and EGC are found in the highest amounts in green tea and have been the subject of most of the studies.

A positive correlation between green tea consumption and cardiovascular health due to several actions such as antioxidative, antihypertensive, anti-inflammatory, antiproliferative, antithrombogenic, and anti-hyperlipidemic etc., is well established based upon epidemiological and experimental studies.

Catechins have been reported to be useful in combating aging and age related disorders like cancer, cardiovascular disorders and neurodegenerative diseases.
Polyphenols of catechins

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