452024.fig.001a
(a)
452024.fig.001b
(b)
452024.fig.001c
(c)
452024.fig.001d
(d)
452024.fig.001e
(e)
452024.fig.001f
(f)
Figure 1: (a–f) Contour plot showing effect of different variables on antioxidant potential (hold value: 0.05% of sodium nitrate). (a) DPPH assay (% activity); (b) reducing power (absorbance); (c) FRAP assay (% activity); (d) nitric oxide ion scavenging activity (% activity); (e) ferrous ion scavenging activity (% activity); (f) total phenolic content (mg/ml).