Synthesis, Radical-Scavenging Activities, and Protective Effects against AAPH-Induced Oxidative Damage in DNA and Erythrocytes of Piperine Derivatives

Figure 8

(a) Protective effects of piperine derivatives on AAPH-induced hemoglobin oxidation (3 h). (b) Kinetic curve of the protective effect of 20 μM piperine derivatives on AAPH-induced hemoglobin oxidation. Control (); AAPH (); AAPH + 5a (); AAPH + 5b (); AAPH + 5c (); AAPH + 5d (). indicates a significant difference from the control group (); indicates a significant difference from the control group ().

(a)

(b)