A direct correlation between antioxidant activities and reducing power of certain plant extracts has been reported.
The reducing power properties are generally associated with the presence of reductones, which have been shown to exert antioxidant action by breaking the free radicals’ chain by donating a hydrogen atom (Yuanet al., 2006; Sun et al., 2008).
This result may be related to the fact that molecules with different electron-donating groups affected the activity of electron-donating, which led to the different reducing power.