Table 2.
MIC exhibited by the myrtle EO and its main components against the pathogenic strains
|
Myrtle EO (mg/ml) |
Myrtenyl acetate (mg/ml) |
1,8-Cineole (mg/ml) |
α-pinene (mg/ml) |
Linalool (mg/ml) |
Tetracycline (μg/ml) |
|
|---|---|---|---|---|---|---|
| E. coli | 6 (± 0.2) | 7 (± 0.2)*** | 7 (± 0.2)*** | 7 (± 0.2)*** | 6 (± 0.2) | 18 (± 0.1) |
| L. monocytogenes | 3 (± 0.2) | 6 (± 0.2)**** | 4 (± 0.1)*** | 6 (± 0.2)**** | 6 (± 0.2)**** | 24 (± 0.1) |
| P. carotovorum | 4 (± 0.5) | 7 (± 0.2)**** | > 10 | 5 (± 0.2)** | 5 (± 0.2)** | 14 (± 0.1) |
| P. aeruginosa | 3 (± 0.5) | 4 (± 0.1)* | > 10 | 8 (± 0.5)**** | 4 (± 0.2)* | 25 (± 0.2) |
| S. aureus | 5 (± 0.1) | 8 (± 0.5)**** | 4 (± 0.2)** | 4 (± 0.2)** | 6 (± 0.2)** | 8 (± 0.2) |
The data, expressed in mg/ml, are the average of three independent experiments (± SD). *p < 0.05, **p < 0.01; ***p < 0.001; ****p < 0.0001 compared with values obtained with EO (ANOVA followed by Dunnett’s multiple comparison test)