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Polyphenol classification.
| Polyphenolic compounds | Sources | Examples | Chemical structure |
|---|---|---|---|
| Flavonoids | Chocolate, red wine, tea, apple, onions, broccoli, olives | Flavonols, flavones, flavanones, isoflavonoids, anthocyanidins, flavanols |
|
| Phenolic acids | Coffee, black tea, cereals | Benzoic acid, cinnamic acid |
|
| Stilbenes | Grapes, peanuts, red wine | Resveratrol |
|
| Lignans | Flaxseed oil, clover, lucerne | Secoisolariciresinol, matairesinol |
|
