Polyphenols do not represent a uniform group of substances. This term covers substances based on the structure of phenol – aromatic compounds with more than one attached hydroxyl group (-OH group).
Natural polyphenols occur in all plants, but only a small number of polyphenol compounds are widely distributed, e.g. quercetin.
Polyphenols are divided into the following main groups and subgroups according to their carbon skeleton:
- Phenolic acids
- Hydroxycinnamic acid
- Coumarins
- Ferulic acid
- Curcuminoids
- Curcumin (curcumin)
- Etc.
- Gingerole
- Curcuminoids
- Caffeic acid
- Hydroxybenzoic acid
- Ellagic acid
- Gallic acid
- Salicylic acid
- Vanillic acid
- Hydroxycinnamic acid
- Flavonoids
-
Anthocyanins
- Anthocyanidins
- Aurantinidine
- Capensinidin
- Cyanidin
- Delphinidin
- Etc.
- Anthocyanidins
- Flavanols
- Catechin
- Epitcatechin
- Epigallocatechin gallate
- Gallocatechin
- Proanthocyanidins
- Etc.
- Flavanone
- Eriodictyol
- Hesperitin
- Naringenin
- Etc.
- Flavone
- Acacetin
- Apigenin
- Chrysetin
- Luteolin
- Etc.
- Flavonols
- Fisetin
- Camphorol
- Morin
- Myricetin
- Quercetin
- Etc.
-
Anthocyanins
- Lignins
- Phytoestrogens
- Lignans
- Matairesinol
- Secoisolariciresinol
- Etc.
- Isoflavones
- Biochanin A
- Coumestrol
- Daidzein
- Genistein
- Glycitein
- Etc.
- Lignans
