Table 1.
Diameter values of the disk diffusion assay of E. divaricata and V. zizanioides against MSSA and MRSA strains.
| Extract | Concentration | Inhibition zone diameter (mm) | |||
|---|---|---|---|---|---|
| MRSA | MSSA (ATCC 25923) | ||||
| E. divaricata | V. zizanioides | E. divaricata | V. zizanioides | ||
| Hexane | 40 mg/mL (crude) | 9.9 (6.7–13.1)∗, n = 20 | 8.3 (6.5–11.4), n = 20 | 13.7 ± 0.1# | 11.4 ± 0.2 |
| 4 mg/mL (10x dilution) | — | — | — | — | |
| 0.4 mg/mL (100x dilution) | — | — | — | — | |
|
| |||||
| Ethanol | 300 mg/mL (crude) | 15.4 (13.1–18.7), n = 20 | 8.7 (6.4–13.3), n = 8 | 16.3 ± 0.2 | 12.1 ± 0.2 |
| 30 mg/mL (10x dilution) | 10.1 (7.4–11.7), n = 18 | 6.8 (6.3–9.0), n = 8 | 13.4 ± 0.2 | 7.3 ± 0.3 | |
| 3 mg/mL (100x dilution) | 7.1 (6.3–10.1), n = 8 | — | 7.6 ± 0.1 | — | |
|
| |||||
| Aqueous | 150 mg/mL (crude) | 9.4 (6.6–15.6), n = 20 | — | 7.4 ± 0.2 | — |
| 15 mg/mL (10x dilution) | — | — | — | — | |
| 1.5 mg/mL (100x dilution) | — | — | — | — | |
|
| |||||
| Vancomycin | 30 μg/disc | 20.6 ± 2.2† | 20.8 ± 0.1# | ||
n denotes the number of isolates that showed a measurable diameter; ∗data were expressed as mean (min-max); #data were expressed as mean ± SEM; †mean ± standard deviation.