Table 1.

Major bioactive compounds in different parts of grape and grape products.

Grape part/product	Bioactive compounds	References
Seeds	catechin epicatechin epicatechin-3-O-gallate proanthocyanidins procyanidin B2 dimeric procyanidin gallic acid	[15, 29, 32–36]
Skin	epigallocatechin kaempferol myricetin trans-resveratrol quercetin proanthocyanidins ellagic acid	[15, 32, 33, 37–40]
Leaves	kaempferol myricetin quercetin gallic acid ellagic acid	[32, 41]
Stems	quercetin 3-O-glucuronide rutin astilbin trans-resveratrol	[15, 38, 42, 43]
Raisin	hydroxymethylfurfural hydroxycinnamic acid	[41, 44, 45]
Red wine	catechin cyanidin-3-glucoside peonidin-3-glucoside cetunidin-3-glucoside delphinidin-3-glucoside resveratrol quercetin hydroxycinnamic acid	[43, 45–47]