Table 4.
Antimicrobial activity of the extracts obtained from the basil samples (mg/mL, mean ± SD, n = 3).
| Antimicrobial Activity | O. basilicum cv. ’Cinnamon’ | O. × citriodorum | Ampicillin (20 mg/mL) |
Imipenem (1 mg/mL) |
Vancomycin (1 mg/mL) |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| EtOH/H2O | Infusion | EtOH/H2O | Infusion | |||||||||||
| MIC | MBC | MIC | MBC | MIC | MBC | MIC | MBC | MIC | MBC | MIC | MBC | MIC | MBC | |
| Gram-negative bacteria | ||||||||||||||
| E. coli | 20 | >20 | 20 | >20 | 10 | >20 | 10 | >20 | <0.15 | <0.15 | <0.0078 | <0.0078 | n.t. | n.t. |
| K. pneumoniae | 20 | >20 | 20 | >20 | 10 | >20 | 10 | >20 | 10 | 20 | <0.0078 | <0.0078 | n.t. | n.t. |
| M. morganii | 10 | >20 | 10 | >20 | 10 | >20 | 10 | >20 | 20 | >20 | <0.0078 | <0.0078 | n.t. | n.t. |
| P. mirabilis | >20 | >20 | >20 | >20 | >20 | >20 | >20 | >20 | <0.15 | <0.15 | <0.0078 | <0.0078 | n.t. | n.t. |
| P. aeruginosa | 20 | >20 | 20 | >20 | 20 | >20 | >20 | >20 | >20 | >20 | 0.5 | 1 | n.t. | n.t. |
| Gram-positive bacteria | ||||||||||||||
| E. faecalis | 10 | >20 | 10 | >20 | 10 | >20 | 10 | >20 | <0.15 | <0.15 | n.t. | n.t. | <0.0078 | <0.0078 |
| L. monocytogenes | 10 | >20 | 20 | >20 | 10 | >20 | 10 | >20 | <0.15 | <0.15 | <0.0078 | <0.0078 | n.t. | n.t. |
| MRSA | 5 | >20 | 10 | >20 | 5 | >20 | 10 | >20 | <0.15 | <0.15 | n.t. | n.t. | 0.25 | 0.5 |
MRSA- Methicillin resistant Staphylococcus aureus; MIC: minimal inhibitory concentration; MBC: minimal bactericidal concentration; n.t.: not tested.