Table 1.
Antibacterial activity of AgNPs synthesized from Nocardiopsis valliformis strain OT1 and its synergistic effect with antibiotics (ø of disc 5 mm)
| Bacteria | AgNPs | Kanamycin | Ampicillin | Tetracycline | |||
|---|---|---|---|---|---|---|---|
| A | A + AgNPs | A | A + AgNPs | A | A + AgNPs | ||
| Escherichia coli ATCC8739 | 9.66 ± 0.57 | 14.66 ± 1.15 | 15.33 ± 0.57 | 16 ± 0.57 | 21.66 ± 0.57 | 19.33 ± 0.76 | 22.33 ± 0.57 |
| Klebsiella pneumoniae ATCC700603 | 10.16 ± 1.04 | NI | 10.33 ± 0.57 | NI | 6 ± 0 | 11.83 ± 0.28 | 13.83 ± 0.28 |
| Pseudomonas aeruginosa ATCC10145 | 11 ± 1 | NI | 10 ± 0 | 11.83 ± 0.28 | 9.83 ± 0.28 | 11.16 ± 0.76 | 16.16 ± 1.04 |
| Staphylococcus aureus ATCC6338 | 12.16 ± 1.25 | 15.83 ± 0.28 | 16.83 ± 0.28 | 33.33 ± 1.52 | 40.5 ± 0.5 | 26.5 ± 0.5 | 28.83 ± 1.04 |
| Bacillus subtilis PCM2021 | 13.66 ± 0.57 | 17.22 ± 0.26 | 19.5 ± 0.5 | 16.33 ± 1.04 | 18.25 ± .05 | 30.33 ± 0.57 | 32.5 ± 0.5 |
Inhibition zones in diameter (mm)
Mean value is significantly different at p ≤ 0.05
Values expressed in mean ± SD
A, antibiotic; AgNPs, silver nanoparticles; NI, no inhibition