Table 4.
Disc diffusion test for essential oil from D. viscosa (EOD), performed on six pathogenic strains and using antibiotics for comparison. Inhibition zone diameter in mm. Results are expressed as mean ± SD.
| Inhibition Zone Diameter (mm) | |||||
|---|---|---|---|---|---|
| Microorganisms | Antibiotics | ||||
| EOD | Streptomycin | Tetracycline | Imazalil | Fluconazole | |
| Gram-negative | |||||
| E. coli | 9.5 ± 0.5 | Resistant | 18.5 ± 1.5 | NA | NA |
| P. aeruginosa | Resistant | Resistant | 13.2 ± 0.5 | NA | NA |
| K. pneumoniae | Resistant | Resistant | 15.0 ± 0.7 | NA | NA |
| Gram-positive | |||||
| S. aureus | 31.0 ± 1.5 | 9.5 ± 0.2 | 17.0 ± 1.2 | NA | NA |
| Fungus | |||||
| C. albicans | 20.4 ± 0.5 | NA | NA | 45.7 ± 1.2 | 21.0 ± 1.0 |
| Yeast | |||||
| S. Cerevisiae | 28.0 ± 1.0 | NA | NA | 47.0 ± 2.5 | 27.5 ± 0.5 |
NA: Not applicable.