Table 1.

Phenolic constituents as nutraceuticals from different fruit residues.

Fruit Phenolic	Waste Residue	Constituent	References
Apple	Peel and pomace	Epicatechin, catechins, hydroxycinnamates, phloretin glycosides, quercitin glycosides, procyanidins, chlorogenic acid, anthocyanins	[49,50,51,52,53,54,55,56,57,58,59,60,61,100,101,102]
Grapes	Seed and skin	Cinnamic acid, coumaric acid, caffeic acid, ferulic acid, chlorogenic acid, neochlorogenic acid, p-hydroxybenzoic acid, protocatechuic acid, vanillic acid, gallic acid, proanthocyanidins, quercetin 3-O-gluuronide, quercetin, resvaratrol, pullulan	[14,28,39,103,104]
Citrus	Peel	Hesperidin, naringin, eriocitrin, narirutin	[12,13,105]
Banana	Peel	Gallocatechin, anthocyanins, delphindin, cyaniding, catecholamine	[41,42,43,106,107,108]
Litchi	Pericarp, seeds	Cyanidin-3-glucosides, cyanidin-3-rutonoside, malvidin-3-glucoside, gallic acid, epicatechin-3-gallate	[69,70,71,72,73,74,109,110]
Mango	Kernel	Gallic acid, ellagic acid, gallates, gallotannins, condensed tannins	[111,112]