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| Test organism | Zone diameter (mm) |
| Bacteria | |
| Bacillus cereus | 20±0.25 |
| Staphylococcous aureus | 18±0.12 |
| Pseudomonas aeruginosa | nil |
| Escherichia coli | 10±0.05 |
| Control | 30±0.012 |
| Fungi | |
| Saccharomyces cerevisiae | 9±0.25 |
| Candida albicans | nil |
| Aspergillus niger | nil |
| Control | 30±0.012 |
