Fig. 9.

Antioxidant activities of EPS-K2 at different concentrations (0, 2.5, 5, 7.5 and 10 g/l): a DPPH radical scavenging activity; b Reducing power; c Fe²⁺ chelating activity. BHA was used as standard. All values are expressed as mean ± SD of three measurements. d DNA protection assay: Lane 1: Native plasmid DNA, lane 2: plasmid DNA incubated with Fenton’s reagent, lane 3, 4 and 5: plasmid DNA incubated with Fenton’s reagent and 5, 7.5 and 10 g/l of EPS-K2, respectively. (empty circle): EPS-K1; (empty triangle): reference antioxidant