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Structural features of the flavonoids tested
| Chemical formula | Name | Substitution | |||
|---|---|---|---|---|---|
| Flavonols | 5 | 7 | 3′ | 4′ | |
 |
Kaempferol | OH | OH | H | OH |
| Quercetin | OH | OH | OH | OH | |
| Flavones | 5 | 7 | 3′ | 4′ | |
 |
Apigenin | OH | OH | H | OH |
| Chrysin | OH | OH | H | H | |
| Diosmetin | OH | OH | OH | OCH3 | |
| Luteolin | OH | OH | OH | OH | |
| Isoflavones | 5 | 7 | 3′ | 4′ | |
 |
Daidzein | H | OH | H | OH |
| Genistein | OH | OH | H | OH | |
| Flavanones | 5 | 7 | 3′ | 4′ | |
 |
Hesperetin | OH | OH | OH | OCH3 |
