Table 1.

Inhibition zone (mm) caused by silver nanoparticles synthesized by extracellular agents of Bacillus pumilus (NPs-1), B. persicus (NPs-2), and B. licheniformis (NPs-3) on cultures of human pathogens bacteria and fungi.

	NPs-2	NPs-1	NPs-3
Escherichia coli	25 ± 2	15 ± 2	15 ± 1
Shigella sonnei	22 ± 2	18 ± 2	15 ± 0
Pseudomonas aeruginosa	20 ± 0	18 ± 1	16 ± 0
Klebsiella pneumonia	23 ± 1	18 ± 1	15 ± 0
Streptococcus bovis	14 ± 0	13 ± 0	12 ± 0
Staphylococcus epidermidis	18 ± 2	10 ± 0	6 ± 1
Staphylococcus aureus	15 ± 1	12 ± 0	16 ± 2
Aspergillus flavus	15 ± 0	10 ± 0	10 ± 1
Candida albicans	20 ± 2	20 ± 0	13 ± 1

For details see text. The values are the means of three experiments ±SD.