List of major classes and subclasses of phytochemicals and other sources
| Major class | Subclass | Compounds | Source |
|---|---|---|---|
| Polyphenols-flavonoids | Flavanols | Catechins, proanthocyanidins, epigallocatechin | Apricots, apples, peaches, green tea, and chocolate |
| Flavonols | Kaempferol, quercitin | Broccoli, onions, radish, and blueberries | |
| Flavones | Luteolin, apigenin | Celery, lettuce, and capsicum peppers | |
| Isoflavones | Genistein, daidzein | Soya and its processed products | |
| Flavanones | Hesperetin, naringenin | Citrus fruits like oranges and grapefruits | |
| Anthocyanidin | Cyanidin, delphinidin | Red wine, berry fruits, and colored fruits | |
| Polyphenols-non-flavonoids | Lignans | Pinoresinol | Flaxseeds and sesame seeds |
| Stilbenes | Resveratrol | Grapes, pomegranate, berries | |
| Phenolic acids | Ferulic acid, caffeic acid, ellagic acid, vanillic acid | Coffee, berries, onions, cereals, and legumes | |
| Curcumins | Curcumin, demethoxycurcumin, cyclic curcumin | Rhizomes of turmeric | |
| Saponins | Cycloartane saponins | Uttroside B, timosaponin A-III | Medicinal plants |
| Dammarane saponins | |||
| Oleananes | |||
| Spirostanes | |||
| Furostanes | |||
| Terpenes | Monoterpenoids | Thymoquinone | Nigella sativa |
| Diterpenoids | Paclitaxel | Bark of the Pacific yew tree | |
| Triterpenoids | Ursolic acid | Marjoram leaves, oregano leaves, rosemary, and wax layer of edible fruits | |
| Cucurbitacin | Cucurbitaceae plants | ||
| Alkaloids | Tryptanthrin | Bacteria, fungi, and plants like Couroupita guianensis, Wrightia tinctoria | |
| Cepharanthine | Stephania tubers | ||
| Oxysophocarpine | Robinia genus plants | ||
| Miscellaneous compounds | Organosulfur compounds | Sulforaphane, allicin, isothiocyanates | Garlic, onions, and cruciferous vegetables like broccoli, cauliflower, and cabbage |
| Polysaccharides | Pectin | Citrus fruits and apples | |