Assessment of Antioxidant and Cytotoxicity Activities of Saponin and Crude Extracts of Chlorophytum borivilianum
Figure 1
Haber-Weiss and Fenton reactions. (a) Fe3+ (5) is reduced to Fe2+ (6) by one-electron transfer from superoxide radical anion (2) to give dioxygen (1). (b) Fe2+ (6) is oxidized back to Fe3+ (5) by hydrogen peroxide (3) leading to the formation of hydroxyl radical (4) and hydroxide (7).
