Table 3.
Antimicrobial activity of liquid fractions of tested EOs’ emulsions in Tween 20 against planktonic (MIC (%) (v/v)) and biofilm cells (MBEC (%) (v/v)) of clinical (SA 2–SA 35) and reference (SA ATCC 6538 and SA ATCC 33591) strains of S. aureus. Dashes (-) indicate EOs where MIC and MBEC values were not reached in the highest concentration (25% (v/v) and 50% (v/v), respectively) of EOs applied. T-EO—thyme oil, TT-EO—tea tree oil, B-EO—basil oil, R-EO—rosemary oil, E-EO—eucalyptus oil, M-EO—menthol mint oil, L-EO—lavender oil.
| T-EO | TT-EO | B-EO | R-EO | E-EO | M-EO | L-EO | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Strain | MIC (%) | MBEC (%) | MIC (%) | MBEC (%) | MIC (%) | MBEC (%) | MIC (%) | MBEC (%) | MIC (%) | MBEC (%) | MIC (%) | MBEC (%) | MIC (%) | MBEC (%) |
| 2 | 0.05 | 0.05 | 0.1 | 1.6 | 1.6 | 25 | 0.4 | 12.5 | 1.6 | - | 0.05 | 50 | 0.2 | - |
| 4 | 0.05 | 0.05 | 0.2 | 1.6 | 1.6 | 50 | 0.4 | 6.3 | 0.8 | - | 0.05 | 0.2 | 0.8 | - |
| 5 | 0.05 | 0.05 | 0.8 | 1.6 | 1.6 | 12.5 | 0.8 | 6.3 | 0.8 | - | 0.4 | 50 | 0.8 | - |
| 6 | 0.1 | 0.1 | 0.4 | 1.6 | 3.1 | - | 0.8 | 3.1 | 1.6 | - | 0.2 | - | 3.1 | - |
| 7 | 0.05 | 0.05 | 0.4 | 3.1 | 3.1 | - | 0.8 | 50 | 1.6 | - | 0.1 | - | 1.6 | - |
| 10 | 0.05 | 0.05 | 0.2 | 3.1 | 0.8 | - | 0.4 | 50 | 1.6 | - | 0.1 | - | 0.4 | - |
| 26 | 0.05 | 0.05 | 0.2 | 6.3 | 0.8 | 12.5 | 0.4 | 6.3 | 0.8 | - | 0.1 | 3.1 | 0.8 | - |
| 27 | 0.025 | 0.05 | 0.8 | 6.3 | 1.6 | - | 0.1 | 25 | 6.3 | - | 0.2 | 50 | 1.6 | - |
| 28 | 0.05 | 0.1 | 0.2 | 3.1 | 0.8 | 25 | 0.4 | 6.3 | 1.6 | - | 0.1 | 0.2 | 0.4 | - |
| 29 | 0.05 | 0.1 | 0.8 | 1.6 | 3.1 | 50 | 0.8 | - | 1.6 | - | 0.1 | 0.4 | 1.6 | - |
| 32 | 0.05 | 0.1 | 0.2 | 6.3 | 0.8 | 12.5 | 0.4 | 6.3 | 0.8 | - | 0.2 | - | 0.8 | - |
| 33 | 0.05 | 0.1 | 0.1 | 6.3 | 1.6 | - | 0.4 | 50 | 0.1 | - | 0.05 | - | 0.2 | - |
| 34 | 0.05 | 0.1 | 0.4 | 6.3 | 0.4 | 25 | 0.4 | - | 3.1 | - | 0.2 | 50 | 0.2 | - |
| 35 | 0.05 | 0.1 | 0.2 | 1.6 | 1.6 | 25 | 0.4 | 50 | 1.6 | - | 0.2 | 50 | 0.8 | - |
| ATCC 33591 | 0.1 | 0.1 | 0.2 | 3.1 | 1.6 | 50 | 0.4 | 12.5 | 0.8 | - | 0.1 | 0.8 | 0.4 | - |
| ATCC 6538 | 0.025 | 0.4 | 0.1 | 0.8 | 0.8 | 12.5 | 0.4 | 6.3 | 0.8 | - | 0.1 | 0.2 | 0.2 | 1.6 |