Table 4.
Antimicrobial potential (MICa) of different plant extracts by nutrient-broth micro-dilution bioassay
| Plant name | E. coli a | K. pneumoniae | S. typhi | B. subtilis | Staph. epidermidis | Staph. aureus |
|---|---|---|---|---|---|---|
| S. aegyptiaca | NA b | NA | 5 | NA | NA | NA |
| S. aethiopis | NA | 10 | 5 | NA | NA | NA |
| S. atropatana | 2.5 | NA | 5 | 2.5 | NA | NA |
| S. eremophila | 2.5 | 2.5 | 0.31 | 2.5 | 0.3 | 0.6 |
| S. hypoleuca | NA | 2.5 | 5 | NA | 1.25 | 1.25 |
| S. limbata | 5 | 2.5 | 1.25 | 5 | 2.5 | 2.5 |
| S. nemorosa | NA | NA | 10 | NA | NA | NA |
| S. santolinifolia | 2.5 | 5 | 1.25 | 2.5 | 1.25 | 2.5 |
| S. sclarea | 5 | 2.5 | 0.31 | 5 | 0.31 | 1.25 |
| S. syriaca | NA | NA | 2.5 | NA | 2.5 | 1.25 |
| S. xanthocheila | 5 | 2.5 | 2.5 | 2.5 | NA | 1.25 |
| Chloramphenicol | 0.05 | 0.05 | 0.05 | 0.0125 | 0.025 | 0.0125 |
a) Minimum inhibitory concentration (MIC) of the plant extracts in the bacterial suspension in the nutrient broth media (mg/ mL). b) NA= not active.