Table 3.
Antibacterial activity of clinical strains of AgNPs extracts compared to aqueous extracts alone and standard antimicrobial drugs, shown as inhibition zone in mm ± SD at concentration 1 mg/mL.
| Tested compound | Mean zone of inhibition of clinical isolates (mm) | ||||
|---|---|---|---|---|---|
| S. aureus∗ | A. baumannii∗ | K. pneumonia∗ | E. coli∗ | P. mirabilis∗ | |
| T. vulgaris | —∗∗ | — | — | — | — |
| T. vulgaris AgNPs | 8.5 ± 0.7 | — | — | — | — |
| M. piperita | — | — | — | — | — |
| M. piperita AgNPs | 12.5 ± 0.7 | 8.0 ± 0.0 | 10.0 ± 0.0 | 9.0 ± 0.0 | — |
| Z. officinalis | — | — | — | — | — |
| Z. officinalis AgNPs | 10.0 ± 0.0 | — | 7.2 ± 0.3 | 8.2 ± 0.3 | — |
∗ ∗ Staphylococcus aureus, Acinetobacter baumannii, Klebsiella pneumonia, Escherichia coli, and Proteus mirabilis; ∗∗(—) = 6.0 mm well diameter (no activity), mean of three replicates ± SD.