Table 2.
Screening results for antimicrobial activity of the three essential oils.
| Essential oil | E. coli | S. aureus | B. subtilis | |
|---|---|---|---|---|
| S1 | AWD a | 8.14 ± 0.05 | 10.29 ± 0.20 | 11.68 ± 0.26 |
| MIC b | 6.25 | 3.125 | 0.39 | |
| MBC c | 25 | 6.25 | 12.5 | |
| S2 | AWD a | 7.00 ± 0.02 | 11.25 ± 0.02 | 11.57 ± 0.02 |
| MIC b | 6.25 | 0.195 | 0.195 | |
| MBC c | 12.5 | 6.25 | 12.5 | |
| S3 | AWD a | 7.52 ± 0.26 | 8.10 ± 0.24 | 9.39 ± 0.30 |
| MIC b | 12.5 | 1.56 | 0.78 | |
| MBC c | >25 | 12.5 | >25 | |
| Gentamicin | AWD a | 23.08 ± 0.88 | 21.45 ± 1.77 | 23.73 ± 0.32 |
| MIC b | 0.487 | 0.487 | 0.487 | |
| MBC c | 0.487 | 0.487 | 0.487 | |
| DMSO | AWD a | 0 | 0 | 0 |
| ddH2O | AWD a | 0 | 0 | 0 |
a AWD = agar well diffusion method. The diameters of the inhibition zone, including the well diameters, are 6 mm; b MIC = minimum inhibitory concentration. The values of the three oil samples are given in mg/mL, and the values of gentamicin are given in μg/mLp; c MBC = minimum bactericidal concentration. The values of the three oil samples are given in mg/ml, and the values of Gentamicin are given in μg/mL.