Table 3.
Effect of new azo Schiff bases on the growth of tested bacteria
| Gram positive | Gram negative | |||||
|---|---|---|---|---|---|---|
| Compound | S. aureus | B. subtilis | K. pneumonia | P. aeruginosa | E. coli | |
| Ampicillin | - | - | - | - | - | |
| Streptomycin | + + | + + + | + + + | + + + | + + + | |
| 4 | + + | + + | - | - | - | |
| 5a | + + | + + | - | - | - | |
| 5b | - | - | - | - | - | |
| 5c | + + | + + | - | - | - | |
| 5d | + + | + + | - | - | - | |
| 5e | - | - | - | - | - | |
| 5f | - | - | - | - | - | |
| 5g | + + | + + | - | - | - | |
| 5h | - | - | - | - | - | |
| 7a | - | - | - | - | - | |
| 7b | + + | + + + | - | - | - | |
Key to symbols:
- Highly active = + + + (inhibition zone > 12 mm)
- Moderately active = + + (inhibition zone 9-12 mm)
- Slightly active = + (inhibition zone 6-9 mm)
- Inactive = - (inhibition zone < 6 mm)