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Table 2 Antibacterial activity of synthesized silver nanoparticles

From: Alpinia calcarata: potential source for the fabrication of bioactive silver nanoparticles

Bacterial strains

Zone of inhibition (mean ± SD in mm)

AgNO3 (1 mM)

Streptomycin

(1 mg/ml)

Plant extract (50 µl)

Synthesized AgNPs

10 µl

30 µl

50 µl

E. coli

12.17 ± 0.34

24.12 ± 0.61

2.87 ± 0.16

9.13 ± 0.52

22.13 ± 0.54

27.70 ± 0.31

S. aureus

15.06 ± 0.12

19.54 ± 0.73

5.38 ± 0.61

13.41 ± 0.33

17.52 ± 0.37

22.43 ± 0.45

P. aeruginosa

10.11 ± 0.43

27.42 ± 0.57

3.67 ± 0.35

17.09 ± 0.42

21.17 ± 0.63

29.14 ± 0.63

  1. SD standard deviation