Figure 3.

Direct ROS-scavenging activity of RWPs and several authentic RWPs. (a) Representative EPR signals induced by the reaction of TEMPONE-H with potassium superoxide in the absence and presence of superoxide dismutase (SOD), RWPs (30 μg ml⁻¹) or an authentic RWP (30 μM). (b) Bar graph showing cumulative data. Results are shown as mean±s.e.m. of four different experiments. ^*versus control.