Figure 6
Effect of puerarin on the free radical-scavenging activity in the H 2 O 2 /NaOH/DMSO system. The signal of hydroxyl radical peaks was observed in electron spin resonance (ESR) experiments. (A) Typical ESR spectra in the presence of solvent control (0.5% DMSO) or puerarin (B, 200 μM), (C, 500 μM) in the H2O2/NaOH/DMSO system, the spectrum is a representative example of four similar experiments.