Table 3.
Antimicrobial activity of test samples of L. speciosa
| Test microorganisms | Diameter of zone of inhibition (mm) | |||||
|---|---|---|---|---|---|---|
| ME | HXSF | CTCSF | CSF | AQSF | Ciprofloxacin/ Fluconazole (30 μg/disc) | |
| Gram positive bacteria | ||||||
| Bacillus cereus | 8.0 ± 0.12 | – | – | 7.00 ± 0.92 | – | 45 ± 2.01 |
| Bacillus megaterium | 16.0 ± 0.43 | 15.0 ± 0.73 | – | – | – | 42 ± 1.17 |
| Bacillus subtilis | 9.0 ± 0.56 | – | 9.0 ± 0.33 | – | – | 42 ± 0.73 |
| Staphylococcus aureus | 10.0 ± 0.57 | – | 19.0 ± 0.48 | 7.0 ± 1.45 | 7.0 ± 1.3 | 42 ± 0.23 |
| Micrococcus luteus | 9.0 ± 0.16 | – | 6.0 ± 0.45 | 7.0 ± 1.11 | 7.0 ± 0.92 | 42 ± 0.56 |
| Gram negative bacteria | ||||||
| Escherichia coli | 8.0 ± 0.54 | – | 7.0 ± 0.81 | 7.0 ± 0.45 | – | 42 ± 0.43 |
| Pseudomonas aeruginosa | 10.0 ± 0.36 | – | 7.0 ± 0.32 | 8.0 ± 0.31 | – | 42 ± 1.11 |
| Salmonella paratyphi | 8.0 ± 0.68 | – | – | 10.0 ± 0.55 | 8.0 ± 1.56 | 47 ± 2.33 |
| Salmonella typhi | – | – | 9.0 ± 0.17 | – | 9.0 ± 0.41 | 45 ± 0.73 |
| Shigella boydii | 7.0 ± 0.87 | – | 6.0 ± 0.66 | 7.0 ± 1.90 | – | 34 ± 0.58 |
| Shigella dysenteriae | 10.0 ± 0.73 | – | 9.0 ± 0.25 | 12.0 ± 0.22 | 7.0 ± 0.83 | 42 ± 0.22 |
| Vibrio mimicus | 6.0 ± 0.21 | – | 6.0 ± 0.16 | 8.0 ± 0.48 | – | 40 ± 0.45 |
| Vibrio parahemolyticus | 9.0 ± 1.56 | – | 6.0 ± 1.12 | 8.0 ± 2.12 | 7.0 ± 0.21 | 35 ± 0.44 |
| Fungi | ||||||
| Saccharomyces cerevisiae | 7.0 ± 1.12 | – | 7.0 ± 0.53 | 7.0 ± 1.43 | 6.0 ± 0.21 | 38 ± 0.11 |
| Aspergillus niger | 8.0 ± 0.43 | – | 8.0 ± 0.48 | 7.0 ± 0.33 | 5.0 ± 0.54 | 37 ± 0.33 |
ME = Methanolic crude extract; HXSF = Hexane soluble fraction; CTCSF = Carbon tetrachloride soluble fraction; CSF = Chloroform soluble fraction; AQSF = Aqueous soluble fraction