Table 2.
Antimicrobial activity of two essential oils (from E. uniflora and P. trunciflora) evaluated by the disk diffusion method (IZ) and minimal inhibitory concentration (MIC).
| Strains | Eugenia uniflora | Plinia trunciflora | Positive control | ||
|---|---|---|---|---|---|
| IZ | MIC | IZ | MIC | MIC | |
| (mm) | (mg/mL) | (mm) | (mg/mL) | (mg/mL) | |
| S. equi | 1.4 | 7.50 (55 ± 6%) | 1.4 | 0.12 (94 ± 3%) | 0.025 ** |
| S. epidermidis | 1.6 | 7.50 (87 ± 2%) | 1.6 | 0.12 (95 ± 4%) | 0.400 ** |
| C. dubliniensis | 1.4 | 0.23 (93 ± 22%) | 1.2 | 0.06 (99 ± 5%) | 0.006 * |
| C. tropicalis | 1.4 | 0.90 (85 ± 1%) | - | - | 0.050 * |
| C. albicans | 1.4 | 1.80 (93 ± 1%) | 1.4 | 0.06 (82 ± 6%) | 0.025 * |
| C. glabrata | 1.6 | 0.93 (85 ± 8%) | 1.4 | 0.12 (100 ± 0%) | 0.050 * |
| C. parapsilosis | 1.4 | 3.75 (85 ± 1%) | 1.4 | 0.12 (98 ± 5%) | 0.006 * |
| C. grubii (serotype A) | 1.6 | 0.45 (89 ± 2%) | 1.6 | 0.12 (97 ± 7%) | 0.013 * |
| C. gattii (serotype C) | 1.6 | 1.80 (75 ± 21%) | 1.2 | 0.12 (98 ± 4%) | 0.025 * |
| C. gattii (serotype B) | 1.6 | 0.22 (99 ± 3%) | - | - | 0.006 * |
| C. neoformans (serotype D) | 1.6 | 0.11 (87 ± 13%) | - | - | 0.006 * |
| S. cerevisiae | 1.6 | 0.22 (91 ± 12%) | 1.6 | 0.12 (100 ± 0%) | 0.013 * |
| Negative control | 1.0 | NA | 1.0 | NA | NA |
Numbers in parenthesis represent the average percentage inhibition (three repetitions) and standard deviation at each MIC; Legend: * fluconazole; ** chloramfenicol; - no biological activity detected; NA, does not apply.