Table 2.

Phenolic compounds detected in unripe fruits.

Unripe Fruits	Cultivars	Maturity Stages	Mono-Phenol Component						Reference
			Phenolic Acids	Flavanols	Flavanones	Flavonols	Stilbenes	Others
Apricots	Pink Cot	42 and 48 days after full bloom	Neochlorogenic acid, chlorogenic acid, 4-p-coumaroylquinic acid, 4-caffeoylquinic acid, 3-feruloylquinic acid, and 3-p-coumaroylquinic acid	Proanthocyanidins	Quercetin-3-O-rutinoside and kaempherol-3-O-rutinoside	——	——	——	[42]
Cherries	13S-20-09	42 and 48 days after full bloom	Neochlorogenic acid, chlorogenic acid, isochlorogenic acid, 4-p-coumaroylquinic acid, 4-caffeoylquinic acid, 3-feruloylquinic acid, and 3-p-coumaroylquinic acid	Proanthocyanidins	Quercetin-3-O-rutinoside and kaempherol-3-O-rutinoside	——	——	——
Peaches	UFO-3, Royal Glory, Laura	42 and 48 days after full bloom	Neochlorogenic acid, chlorogenic acid, isochlorogenic acid, 4-p-coumaroylquinic acid, 4-caffeoylquinic acid, 3-feruloylquinic acid, and 3-p-coumaroylquinic acid	Proanthocyanidins	Quercetin-3-O-rutinoside, quercetin-3-O-hexoside, kaempherol-3-O-hexoside, and kaempherol-3-O-rutinoside	——	——	——
Plums	Tolosa	42 and 48 days after full bloom	Neochlorogenic acid, chlorogenic acid, Isochlorogenic acid, 4-p-coumaroylquinic acid, 4-caffeoylquinic acid, 3-feruloylquinic acid, and 3-p-coumaroylquinic acid	Proanthocyanidins	Quercetin-3-O-rutinoside	——	——	——
Grape	Thompson Seedless	——	Ggallic acid, benzoic acid, hydroxybenzoic acid, syringic acid, and p-coumaric acid	——	Quercetin and rutin	——	Resveratrol	——	[41]
Apple	Fuji, Nagafu 2	30 days after blossoming	5-Caffeoylquinic acid, 4-p-coumarylquinic acid, chlorogenic acid, caffeic acid, and phenylalanine ester	(+)-Catechin, (−)-epicatechin, and procyanidin B2	Rutin, quercetin quercetin-3-O-galactoside, quercetin-3-O-rhamnoside, isoquercetin, and quercetin	Phloretin-2′-O-xyloglucoside, hydroxyphospholipid monoglycoside, hydroxychrometin diglycoside, and hyperoside	——	——	[44]
Pomegranate	Borde de Albatera 1, PiñónTierno deOjós PiñónTierno deOjós5, Mollar de Elche 14 et al. (all of 9)	Middle of June to the first week of July (Orihuela, Alicante, Spain)	——	Ellagic tannin, gallic acyl-hexahydroxy, dibenzoyl-hexanoside, and gallic acyl-glucoside	——	——	——	——	[19]
Kiwifruit	Zesy002, Zesy004, Hayward	20 days after fruit set	Gallic acid, protocatechuic acid, chlorogenic acid, caffeic acid, vanillic acid, p-Coumaric acid, and ferulic acid	Catechin epigallocatechin gallate, and epicatechin	Rutin, quercitrin, and quercetin hyperoside	——	——	——	[37]
Pears	Fengshui, Cuiguan, Dangshansuli et al. (all of 10)	20 days after full bloom	Quinic acid, cinnamic acid isomer, chlorogenic acid, 1-O-caffeoylquinic acid, 4-p-coumaroylquinic acid, caffeoylshikimic acid, 3-O-feruloylquinic acid, caffeoyl-malonyl-methylcitric acid, isochlorogenic acid A, and p-coumaroylcaffeoylquinic acid	(+) -Catechin, (−)-epicatechin, and procyanidin dimer	——	——	——	Arbutin, caffeoylarbutin, p-coumaroylarbutin, and p-coumaroylarbutin	[46]
Orange	Navel variety	Physiologically matured with green peel	Caffeic acid	Catechin and epicatechin	Rutin, quercitrin, quercetin, naringin, kaempferol, and luteolin	——	——	——	[40]
Raspberry	Rubus chingii Hu	Green fruit stage	Ellagic acid	(+)-Catechin, (−)-epicatechin, and proanthocyanidin B1	Rutin, quercetin, kaempferol, quercetin-3-O-glucuronide, kaempferol-3-O-rutinoside, and kaempferol-3-O-glucoside	——	——	——	[48]

——: not mentioned in the literature.