Flavonoid subclasses and sources [20]

FlavonoidsSample polyphenolsSources
Simple flavonoidsFlavan-3-ols(+)-catechins, (−)-epicatechin, (−)-epigallocatechin-3-gallateGreen tea, chocolate, tree fruits, grapes, red wine
FlavanonesHesperetinnaringenin, eriodictyolCitrus fruits and juices
FlavonesLuteolin, apigeninParsley, celery seed, oregano
IsoflavonesDaidzein, genistein, glyciteinSoybeans, soy-based foods
FlavonolsQuercetin, kaempferol, myricetin, isorhamnetinOnions, apples, tea, berries
AnthocyanidinsCyanidin, delphinidin, malvidin, pelargonidin, peonidin, petunidinMost berries, stone fruits
Complex flavonoidsCondensed tannins (proanthocyanidins)Procyanidins, prodelphinidins, propelargonidinChocolate, stone fruit (apples, pears), grapes, strawberries, cranberries, nut skins, cinnamon, beer, wine