Table 6 Antibacterial activity of plant extracts (inhibition zone)
Sample | Concentration (μg/ml) | Inhibition zone (mm) | |||
|---|---|---|---|---|---|
P. aeruginosa | S. aureus | E. coli | K. pneumonia | ||
P. roxburghii | 500 | – | – | – | – |
1000 | – | 10.2 ± 0.5 | – | 10.95 ± 0.5 | |
1500 | – | 12.1 ± 0.5 | – | 13.2 ± 0.5 | |
P.wallichiana | 500 | – | – | – | – |
1000 | 11.25 ± 0.5 | 11.93 ± 0.5 | – | 10.12 ± 0.5 | |
1500 | 14.1 ± 0.5 | 14.21 ± 0.5 | – | 12.3 ± 0.5 | |
P. gerardiana | 500 | – | – | – | – |
1000 | – | – | – | – | |
1500 | 10.05 ± 0.5 | – | – | – | |