Hydroxybenzoic and Phenolic Aids
Polyphenols (Flavonoids)
Still Benes
Ellagic acid*
Flavones Luteolin* Diosmetin Apigenin Chrysin wogonin
Flava-3-ols Catechin* Edpicatechin* Epigalloctechin* Epigalloctechin-3-gallete* B1,B2,B3,B4 procyanidins*
Flavanones Naringenin* Hesperidin Eriodictyol
Flavonds Quercetin* Myricetin* Kaemoferol* Rutin*
Isoflavones Genistein Daidzein
Anthocyamins Delphinidin Pelargonidin malvidin cyanidin petunidin
Gallic acid*
Reveratrol*
Vanillic acid*
Trans-reveratrol*
Caffeic acid*
Coumaric acid*
Ferulic acid*
Gentistic acid*
Table 1:
Grape seed composition. Principal classes of polyphenols and phenolic acids; stars evidence compounds found in grape seeds by different analytical studies [15,19-22,28-30,39-40].
