Table 4.
The antimicrobial activity of tested samples. The activity was expressed as minimal inhibitory concentration (μg/mL).
| CIP | GEN | FOX | ETB | AMP | ND | E | |
|---|---|---|---|---|---|---|---|
| Staphylococcus aureus ATCC 25923 | 0.25 | 0.25 | - | - | - | >1000 | >1000 |
| Staphylococcus epidermidis ATCC 12228 | 0.06 | 0.125 | - | - | - | >1000 | >1000 |
| Escherichia coli ATCC 25922 | 0.008 | 0.5 | - | - | - | >1000 | >1000 |
| Pseudomonas aeruginosa ATCC 27853 | 0.25 | 2 | - | - | - | >1000 | >1000 |
| Candida albicans ATCC 10231 | - | - | - | - | 0.03 | >1000 | - |
| Candida parapsilosis ATCC 22019 | - | - | - | - | 0.25 | >1000 | - |
| Mycobacterium smegmatis ATCC 607 | 0.25 | - | 16 | - | - | >1000 | >1000 |
| Mycobacterium smegmatis ATCC 19420 | 0.25 | - | 16 | - | - | >1000 | >1000 |
| Mycobacterium tuberculosis H37Ra ATCC 25177 | 0.125 | - | - | 2 | - | 256 | 128 |
CIP—Ciprofloxacin; GEN—Gentamicin; FOX—Cefoxitin; AMP—AmphotericinB; ETB—Ethambutol; ND—Nigella damascena EO; E—β-elemene. Drugs were used as positive controls; 1% DMSO was used as a negative control.