Table 2.
The inhibitory and cidal concentrations of E. rostkoviana essential oil.
| Microorganism | Euphrasia rostkoviana EO | CIP | TIO | ||||
|---|---|---|---|---|---|---|---|
| MIC (µg/mL) | IC50 (µg/mL) | MBC/MFC (µg/mL) | MIC (µg/mL) | MIC (µg/mL) | |||
| 24 h | 48 h∗ | 24 h | 48 h | 24 h | 24 h | 48 h | |
| Enterococcus faecalis | 512 | — | 128 | — | 1024 | 0.5 | — |
| Staphylococcus aureus | 512 | — | 128 | — | >2048 | 0.5 | — |
| Staphylococcus epidermidis | 512 | — | 256 | — | >2048 | 0.25 | — |
| Klebsiella pneumoniae | 2048 | — | 1024 | — | >2048 | 0.125 | — |
| Escherichia coli | 2048 | — | 1024 | — | >2048 | 0.015 | — |
| Pseudomonas aeruginosa | >2048 | — | >2048 | — | >2048 | 0.125 | — |
| Candida albicans | 128 | 1024 | 128 | 1024 | 2048 | — | 0.063 |
∗The growth inhibition was measured after 24 h and 48 h of incubation in case of C. albicans; EO: essential oil; CIP: ciprofloxacin; TIO: tioconazole; MIC: minimum inhibitory concentration; IC50: inhibitory concentration causing ≥50% of bacterial growth; MBC: minimum bactericidal concentration; MFC: minimum fungicidal concentration.