Figure 4.

Antioxidant activity of POAgNPs against different antioxidant assays. (A) DPPH free radical scavenging activity. (B) Superoxide anion scavenging activity. (C) Hydroxyl radical scavenging activity. (D) Nitric oxide scavenging activity. All the experiments were performed in triplicate. The p-value was calculated by comparing means ± SD of the free radical scavenging potential (%), using one-way ANOVA followed by Tukey to determine statistical significance values, which are as follows: ***p ≤ 0.001; **p ≤ 0.002; and *p ≤ 0.033.