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Table 6 Key polyphenols found in review food sources

From: Effect of food sources of nitrate, polyphenols, L-arginine and L-citrulline on endurance exercise performance: a systematic review and meta-analysis of randomised controlled trials

Group Subclasses Food sources Example compounds
Flavonoids Anthocyanidins Berries, cherries, blackcurrants, grapes [15] Cyanidin
  Flavanols (Flavan-3-ol) Green tea, cocoa, [15] Catechin
  Flavanones Citrus, cherries [15] Hesperidin
  Flavones Beetroot, fruit skins, Thai ginseng [15, 175] Luteolin
  Flavonols Apples, beetroot, cherries, nuts, olive oil, cranberries [15] Quercetin
Phenolic acids Benzoic acid derivatives
Cinnamic acid derivatives
Beetroot, nuts, cranberries, ginger, chokeberry [15], Yerba mate [176], ginseng [177,178,179], cranberries, banana [180], Aloe arborescens [181], Danggui Buxue Tang [182], honey [183], Spirulina [184], Protandim [185, 186] Gallic acid
Vanillic acid
p-coumaric acid
Caffeic acid
Chlorogenic acid
Stilbenes Stillbenoids Grapes, nuts [15] Resveratrol
Tannins Hyrdolysable tannins
Condensed tannins (Proanthocyanidins)
Pomegranate, blackcurrant, French maritime bark [187], Carob [188], Ecklonia cava [189], Rhodiola rosea [190] Ellagitannins