Table 1.
Antimicrobial activity of plant extracts presented as zone of inhibition, viable count, and MBC
| Tested agent | Zone of inhibition (mm) |
Viable counta (CFU/ml) |
MBC (mg/ml) |
|---|---|---|---|
| S. aureus | S. aureus | S. aureus | |
| Ethanolb | 7 | 3.4 × 107 | NTc |
| S. ceratophylla | 0 | 3.6 × 107 | NTc |
| S. dominica | 1 | 1.6 × 107 | NTc |
| S. hierosolym | 0 | 3.8 × 107 | NTc |
| S. indica | 0.5 | 3.1 × 107 | NTc |
| S. syriaca | 1 | 3.3 × 107 | NTc |
| S. triloba | 5 | NDd | 1.0 ± 0.35 |
| S. verbena | 0 | 3.1 × 107 | NTc |
Results are presented for microorganisms showing susceptibility. Each experiment was performed in triplicate
a
Viable count was performed at a plant ethanol extract concentration of 1.56 mg/ml
b
Positive contro
c
Not tested
d
No detectable growth (<30 CFU/ml)