Figure 4

Response surface plots for representation of the combined effects of (a) A and B on FRAP, (b) A and C on FRAP (c) B and C on FRAP, (d) A and B on ABTS, (e) A and C on ABTS (f) B and C on ABTS, (g) A and B on DPPH, (h) A and C on DPPH (i) B and C on DPPH (A: Temperature (°C), B: Time (minutes), C: Solid to solvent ratio (w/v)).