Table 3.
In-vitro antibacterial activity and MIC of S. anquetilia methanol leaf extract against tested bacterial strains.
| Concentration (mg mL−1) |
Zone of Inhibition (mm) (Mean ± SD) | ||||
|---|---|---|---|---|---|
| Gram-Negative Bacteria | Gram-Positive Bacteria | ||||
| E. coli * | P. aeruginosa * | K. pneumoniae * | S. typhi * | S. aureus ** | |
| 10 | 13.0 ± 0.57 | 10.0 ± 5.18 | 14.0 ± 0.57 | 7.0 ± 6.08 | 10.0 ± 0.57 |
| 20 | 14.0 ± 0.57 | 12.0 ± 0.57 | 15.0 ± 0.57 | 7.0 ± 6.08 | 12.0 ± 1.15 |
| 40 | 14.0 ± 0.57 | 12.0 ± 0.57 | 15.0 ± 0.57 | 8.0 ± 6.65 | 12.0 ± 0.57 |
| 80 | 13.0 ± 0.57 | 13.0 ± 0.57 | 13.0 ± 0.57 | 9.0 ± 7.57 | 13.0 ± 0.57 |
| 160 | 19.0 ± 0.57 | 18.0 ± 0.57 | 17.0 ± 0.57 | 8.0 ± 6.92 | 16.0 ± 1.52 |
| PC (10 µg) | 26.0 ± 1.0 | 29.0 ± 1.0 | 28.0 ± 0.57 | 29.0 ± 1.73 | 28.0 ± 1.52 |
| MIC (mg mL−1) | 8.0 ± 0.56 | 2.0 ± 0.57 | 8.0 ± 0.55 | 32.0 ± 0.57 | 16.0 ± 0.50 |
Values are in triplicate and represented as mean ± SD; PC = positive control. * Gram-negative bacteria, ** Gram-positive bacteria.