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1. A flavonoid, C15H14O6, originally derived from catechu, found in various foods such as green tea, cacao, and many fruits, and used in tanning and dyeing.
2. Any of various isomers or derivatives of this compound. In both senses also called catechol.


1. (Biochemistry) a soluble yellow solid substance found in catechu and mahogany wood and used in tanning and dyeing. Formula: C15H14O6
2. (Dyeing) a soluble yellow solid substance found in catechu and mahogany wood and used in tanning and dyeing. Formula: C15H14O6
3. (Tanning) a soluble yellow solid substance found in catechu and mahogany wood and used in tanning and dyeing. Formula: C15H14O6
[C19: from catechu + -in]


(ˈkæt ɪ tʃɪn, -kɪn)

a yellow, astringent compound, C15H14O6, used in tanning and dyeing.
[1850–55; catech (u) + -in1]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.catechin - a tannic acid that is extracted from black catechu as a white crystalline substance
tannic acid, tannin - any of various complex phenolic substances of plant origin; used in tanning and in medicine
References in periodicals archive ?
Non-carotenoid antioxidants, including the flavonoids epicatechin and epigallocatechin 3-0-gallate, vitamins C and E, and the minerals manganese, selenium, zinc, and boron,
There are increasing evidence demonstrating the ability of GSE to retard lipid oxidation in meat and meat products during storage, most likely due to the fact that GSE is a rich source of monomeric phenolic compounds, such as catechin, epicatechin and especially proanthocyanidins (Ozvural and Vural, 2011).
Abundant in the antioxidant compounds epigallocatechin gal late (EGCG), epigallocatechin (EGC), epicatechin gal late (ECG), and epicatechin (EC), green tea (Camellia sinensis) intake helps to manage blood pressure.
High recoveries of the physiologically active monomers, catechin (145%) and epicatechin (104%), were achieved in crude extracts, compared with conventional organic solvent extraction.
Protective effect of epicatechin, epicatechin gallate and quercetin on lipid peroxidation in phospholipid bilayers.
The findings support recent research linking flavanols, especially epicatechin, to improved blood circulation, heart health and memory in mice, snails and humans.
Studies have found that the antioxidant epicatechin, found in cacao beans, might be able to reduce the signs of aging in the skin, while cocoa butter can serve as an effective moisturizer.
who led the work, explained that cocoa powder, an ingredient in chocolate, contains several polyphenolic, or antioxidant, compounds such as catechin and epicatechin, and a small amount of dietary fiber.
Epicatechin is a naturally occurring molecule that has been shown to improve the flexibility of arteries and improve bloodflow, which is good for people with poor vascular health who suffer from high blood pressure, he said.
It's all down to a naturally-occurring substance inside the cocoa bean, epicatechin, which can improve the functioning of the muscle cell's power-producing units, the mitochondria.
Green tea (Camellia sinensis) is a rich source of bioactive ingredients including a specific type of flavonoid known as catechins (GTCs) which include catechin, epicatechin, epigallocatechin, epicatechin-3-gallate, epigallocatechin gallate (EGCG), gallocatechin, catechin gallate and gallocatechin gallate.
Despite his misgivings, Lukowiak and Fruson decided to concentrate on a group of compounds -- the flavonoids -- found in a wide range of 'superfoods' including chocolate and green tea, focusing on one particular flavonoid, epicatechin (epi).