Table 5.
Measure of inhibition zone diameters (mm) for essential oils against bacterial strains.
| Essential Oils | S. aureus | MRSA | E. coli | S. Typhimurium | L. monocytogenes | C. albicans |
|---|---|---|---|---|---|---|
| Thymus vulgaris | 33.0 ± 1.0 | 33.0 ± 2.0 | 38.0 ± 3.6 | 41.0 ± 1.0 | 35.3 ± 5.0 | 58.0 ± 2.6 |
| Origanum vulgare | 28.7 ± 5.5 | 30.7 ± 3.8 | 33.3 ± 4.2 | 35.7 ± 1.2 | 31.7 ± 2.9 | 50.7 ± 1.2 |
| Rosmarinus officinalis | 10.7 ± 1.2 | 10.0 ± 0.0 | 11.0 ± 1.7 | 12.7 ± 1.2 | N | 18.7 ± 2.3 |
| Apium graveolens | 12.0 ± 2.6 | 11.3 ± 0.6 | N | 13.0 ± 1.0 | 11.7 ± 1.5 | 20.7 ± 1.2 |
| Salvia lavandulifolia | 10.3 ± 0.6 | 10.3 ± 0.6 | 10.7 ± 0.6 | 13.3 ± 0.6 | N | 25.0 ± 3.0 |
| Cinnamomum zeylanicum | 18.3 ± 2.3 | 18.3 ± 1.2 | 21.3 ± 1.2 | 21.7 ± 1.2 | 14.3 ± 0.6 | 34.7 ± 0.6 |
| Cinnamomum cassia | 36.0 ± 3.5 | 34.7 ± 2.3 | 29.0 ± 4.6 | 28.0 ± 1.7 | 28.0 ± 2.0 | 55.7 ± 3.5 |
| Citrus sinensis | N | N | N | N | N | N |
| Citrus reticulata | 10.3 ± 0.6 | 10.0 ± 0.0 | N | 14.0 ± 1.0 | 10.3 ± 0.6 | 22.0 ± 1.7 |
| Citrus limon | N | N | N | N | N | N |
| Citrus paradise | N | N | N | N | N | N |
| Foeniculum vulgare | N | N | N | 12.0 ± 2.0 | N | 12.7 ± 2.5 |
| Mentha piperita | 11.0 ± 0.0 | 11.0 ± 1.0 | 13.3 ± 1.5 | 22.3 ± 2.5 | N | 40.3 ± 4.0 |
| AA | 15.3 ± 0.6 | 17.3 ± 0.6 | 32.3 ± 4.0 | 30.7 ± 1.2 | 19.0 ± 1.0 | 25.7 ± 1.2 |
Results are presented by mean values from three experiments ± standard deviations. S. aureus: Staphylococcus aureus; MRSA: methicillin-resistant Staphylococcus aureus; E. coli: Escherichia coli; S. Typhimurium: Salmonella enterica serovar Typhimurium; L. monocytogenes: Listeria monocytogenes; C. albicans: Candida albicans; N: no inhibition zone; AA: antimicrobial agents (ciprofloxacin 2 mg/mL for MRSA, 0.1 mg/mL for L. monocytogenes, 0.01 mg/mL for the rest of bacteria, and ketoconazole 0.01 mg/mL for C. albicans).