Epicatechin 3-gallate flavan

Epicatechin 3-gallate (flavan-3-ol) Camellia sinensis (Theaceae) Proteasome CHY-like activity (194 nM) [100]... 

Epicatechin 3-O-gallate (flavan-3-ol gallic acid ester) Cinnamomum sp. (Lauraceae), Rheum palmatum (Polygonaceae), Camellia sinensis (Theacaeae) PEP (52 nM) [116]... 

Epicatechin 3-O-gallate (flavan-3-ol gallic acid ester)... 

Grape peel and seeds are especially rich in the flavan-3-ols, catechin, epicatechin, gallocatechin, epigallocatechin, epicatechin gallate and catechin gallate (Fig. 3). The content in the peel varies greatly (10-520 mg/kg), since it depends on the cultivar and seasonal and environmental factors [16]. In addition, the occurrence of the flavanonols astilbin (dihydroquercetin 3-rhamnoside) and engeletin (dihydrokaempferol 3-rhamnoside) has been described. 

Flavanols are one of the most abundant classes of flavonoids, often referred to as flavan-3-ols or catechins. They are present as monomers, oligomers, and polymers and are often esterified with gallic acid [1]. The focus of this chapter are bioavailability and metabohsm of the flavanol monomers, catechin, epica-techin, and the green tea flavanols epigallocatechin gallate, epigallocatechin, and epicatechin gallate (Fig. 1). 

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