Table 4.

Antioxidant activity of DPPH radical-scavenging activity

Concentrations, μg mL−1	Standard, percent inhibition	PAC, percent inhibition	PACAgNPs, percent inhibition	PACFeNPs, percent inhibition
10	93.29 ± 0.60	12.07 ± 0.37	13.92 ± 0.13	12.01 ± 0.27
20	95.13 ± 0.54	12.86 ± 0.25	16.83 ± 0.24	12.78 ± 0.16
30	96.16 ± 0.17	13.89 ± 0.24	18.95 ± 0.33	13.83 ± 0.30
40	97.76 ± 0.29	15.11 ± 0.41	19.80 ± 0.35	16.52 ± 0.40
50	98.73 ± 0.18	16.79 ± 0.32	20.83 ± 0.33	18.06 ± 0.60
IC50	–	12.50 ± 0.30	7.37 ± 0.27	9.31 ± 0.22

Values are expressed in triplicate mean SD