Table 1. Classification of polyphenols.

Classification	Representative members
Flavonoids
Anthocyanins	Delphinidin, pelargonidin, cyanidin, malvidin, aurantinidin, peonidin, petunidin, rosinidin
Flavanols	Epicatechin, epigallocatechin, EGCG, procyanidins, prodelphinidins
Flavanones	Hesperidin, naringenin, butin, eriodictyol, homoeriodictyol, isosakuranetin Naringin, pinocembrin, poncirin, sakuranetin Sakuranin, sterubin, pinostrobin
Flavones	Apigenin, chrysin, luteolin, acacetin, genkwanin, echioidinin, baicalein, oroxylon, wogonin, geraldone, tithonine, diosmetin, pilloin, velutin, scutellarein, hispidulin, sorbifolin, pectolinarigenin, zapotin, tricetin, jaceosidin, sinensetin, onopordin, tangeretin
Flavonols	Quercetin, kaempferol, myricetin,isorhamnetin, galangin, azaleatin, fisetin, gossypetin, kaempferide, morin, natsudaidain, pachypodol, rhamnazin
Isoflavonoids	Genistein, daidzein, formononetin
Phenolic acids
Hydroxybenoic acid	Ellagic acid, gallic acid, syringic acid
Hydroxycinnamic acid	Ferulic acid, chlorogenic acid, caffeic acid
Lignans	Sesamin, secoisolariciresinol diglucoside, pinoresinol, lariciresinol, syringaresinol, hydroxymatairesinol, matairesinol
Stilbenes	Resveratrol, pterostilbene, piceatannol, viniferins