Table 2.
Inhibition zone diameter and minimum inhibitory concentration of the active compound (R f value 0.56) produced by Streptomyces sannanensis SU118
| Test microorganisms | Inhibition zone diameter (mm) ¥ | MIC (μg/ml) | MIC of penicillin (μg/ml) |
|---|---|---|---|
| Bacillus subtilis MTCC 736 | 25 ± 1.0 | 2.0 | 0.5 |
| Bacillus circulans MTCC 8074 | 23 ± 1.2 | 3.0 | 0.5 |
| Bacillus megaterium MTCC 8075 | 26 ± 1.5 | 2.0 | 0.5 |
| Staphylococcus aureus MTCC 96 | 31 ± 0.9 | 0.5 | 0.25 |
| Staphylococcus aureus (Clinical isolate) | 30 ± 0.9 | 0.5 | 0.25 |
| Micrococcus luteus MTCC 2987 | 25 ± 1.3 | 2.0 | 0.5 |
| Mycobacterium phlei MTCC 1724 | 25 ± 1.0 | 2.0 | 0.5 |
| Mycobacterium smegmatis MTCC 6 | 21 ± 0.5 | 3.0 | 1.0 |
| Escherichia coli MTCC 739 | ND | ND | |
| Klebsiela pneumoniae MTCC 3040 | ND | ND | |
| Pseudomonas aeruginosa MTCC 2453 | ND | ND |
Note: Data express as mean ± SD (n =3) “ – ” : No Inhibition Zone; ¥ Concentration of the active compound: 1 mg/ml; ND – Not determined.