Table 3.
Mechanisms of antioxidant activity of flavonoids.
| Responsible structural elements | Mechanisms of antioxidant activity | References |
|---|---|---|
| 4-(-C = O) group in conjugation with 3-OH group | Metal chelating activity | [207] |
| 4-(-C = O) group with 5-OH group | ||
| 3′,4′-OH groups | ||
| 3′,4′-OH groups | Scavenge Peroxynitrite | [210] |
| 3-OH group | ||
| Flavones structure | Inhibit protein kinase C | [210] |
| 7-OH group | ||
| 3′,4′-OH groups | ||
| 3′,4′-OH groups | Scavenge ROS | [207] |
| 3,5,7-OH groups | ||
| 4-(-C = O) group in conjugation with 2,3-double bond |