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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