Table 2.
Mean, Standard Deviation, Median, and Range of Zone Diameters (mm) for Essential Oils Against Gram-Positive Clinical Isolates
| Species (n) | Oregano | Thyme | Cinnamon Bark | Lemongrass | Manuka | Clove | Tea Tree | Thieves | Vanco |
|---|---|---|---|---|---|---|---|---|---|
| MRSA (10) | |||||||||
| Mean (SD) | 23.6 (0.84) | 26.8 (1.69) | 29.7 (0.82) | 29.2 (2.04) | 19.7 (1.34) | 12.8 (0.63) | 9.4 (0.52) | 18.8 (1.81) | 17.8 (0.42) |
| Median, range | 23, 2 | 26, 5 | 30, 3 | 29, 5 | 20, 4 | 13, 2 | 9, 1 | 18, 1 | 18, 1 |
| MSSA (10) | |||||||||
| Mean (SD) | 26.6 (2.21) | 29.7 (1.77) | 30.2 (2.78) | 31.4 (6.40) | 18.8 (1.62) | 13.4 (1.35) | 8.9 (2.42) | 19.5 (2.72) | 18.2 (3.05) |
| Median, range | 26, 7 | 30, 6 | 29, 7 | 30, 20 | 18, 5 | 13, 5 | 8.5, 7 | 19, 8 | 19, 11 |
| GAS | |||||||||
| Mean (SD) | 18.3 (0.48) | 19.7 (1.57) | 13.1 (0.32) | 23.2 (3.33) | 14.0 (1.94) | 13.0 (0.47) | 6.9 (0.99) | 19.1 (1.60) | 21.0 (1.16) |
| Median, range | 18. 1 | 19.5, 4 | 13, 1 | 22, 11 | 13, 2 | 13, 2 | 6.5, 2 | 18.5, 5 | 20.5, 3 |
Abbreviations: GAS, group A streptococcus; Streptococcus pyogenes; MRSA, methicillin-resistant Staphylococcus aureus; MSSA, methicillin-susceptible S aureus; SD, standard deviation.