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Table 4 Antioxidant activity of DPPH radical-scavenging activity

From: Green synthesis of silver and iron nanoparticles of isolated proanthocyanidin: its characterization, antioxidant, antimicrobial, and cytotoxic activities against COLO320DM and HT29

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
  1. Values are expressed in triplicate mean SD