Table 4.
Minimal inhibition concentration (MIC), minimal bactericidal concentration (MBC) and ration MBC/MIC of the aerial parts essential oils extracted from 05 Tunisian Lamiaceae plants against 5 bacterial strains
| Essential oils | Tested microorganisms | ||||
|---|---|---|---|---|---|
| E. colia) | S. ent | P. aer | B. sub | S. aur | |
| S. officinalis | |||||
| MIC | 22.78b) | 22.78 | 22.78 | 22.78 | 22.78 |
| MBC | 45.55 | 22.78 | 22.78 | 22.78 | 22.78 |
| MBC/MIC | 2.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| T. capitatus | |||||
| MIC | 0.73 | 0.73 | 1.47 | 2.94 | 0.73 |
| MBC | 0.73 | 0.73 | 2.94 | 2.94 | 0.73 |
| MBC/MIC | 1.00 | 1.00 | 2.00 | 1.00 | 1.00 |
| R. officinalis1 | |||||
| MIC | 11.38 | 22.75 | 22.75 | 22.75 | 22.75 |
| MBC | 22.75 | 22.75 | 45.50 | 22.75 | 45.50 |
| MBC/MIC | 2.00 | 1.00 | 2.00 | 1.00 | 2.00 |
| R. officinalis2 | |||||
| MIC | 45.50 | 45.50 | 91.00 | 91.00 | 45.50 |
| MBC | 182.00 | 91.00 | 182.00 | 91.00 | 91.00 |
| MBC/MIC | 4.00 | 2.00 | 2.00 | 1.00 | 2.00 |
| O. majorana | |||||
| MIC | 45.00 | 22.50 | 45.00 | 22.50 | 22.50 |
| MBC | 45.00 | 22.50 | 45.00 | 22.50 | 22.50 |
| MBC/MIC | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
aE. coli = Escherichia coli CIP 53.126; S. ent = Salmonella enterica CIP80.39;
P. aer = Pseudomonas aeruginosa CIP 82118; B. sub = Bacillus subtilis CIP 52.62; S. aur = Staphylococcus aureus CIP 4.83.
bValues are expressed as mg/mL