Table 3.
Antimicrobial activity of metabolite fractions against non-pathogenic and pathogenic microorganisms
| Target organisms | Metabolite fractions Zones of inhibition (cm) Mean ± SD |
Tetracycline (10 µg ml−1) | |
|---|---|---|---|
| Active fraction (TLC) | Active fraction (column chromatography) | ||
| B. subtilis | 1.3 ± 0.04 | 1.2 ± 0.08 | 2.7 ± 0.08 |
| S. epidermidis | 1.65 ± 0.04 | 1.5 ± 0.12 | 2.3 ± 0.04 |
| B. linens | 1.5 ± 0.08 | 1.6 ± 0.06 | 2.5 ± 0.08 |
| M. luteus | 1.8 ± 0.12 | 1.7 ± 0.10 | 3.0 ± 0.08 |
| P. fluorescens | 0.95 ± 0.04 | 0.8 ± 0.08 | 2.6 ± 0.12 |
| E. coli | 0.8 ± 0.04 | 0.63 ± 0.04 | 1.8 ± 0.04 |
| S. cereviseae | 0 | 1.8.0 ± 0.12 | 2.8 ± 0.20 |
| Clinical isolates | |||
| E. coli (26423) | 0 | 0 | 2.8 ± 0.04 |
| E. coli (26437) | 1.2 ± 0.04 | 1.0 ± 0.08 | 2.7 ± 0.12 |
| E. coli (26479) | 0.8 ± 0.06 | 0.95 ± 0.04 | 2.0 ± 0.04 |
| P. aeruginosa (26460) | 1.0 ± 0.12 | 0.8 ± 0.14 | 2.1 ± 0.06 |
| P. aeruginosa (26418) | 1.1 ± 0.22 | 1.0 ± 0.12 | 0 |
| P. aeruginosa (26484) | 1.2 ± 0.26 | 0.96 ± 0.04 | 2.8 ± 0.08 |