Research Article
Efficient Degradation of Feather by Keratinase Producing Bacillus sp.
Table 1
Morphological and biochemical characterization of BF isolates.
| Character | Test | Isolates | BF11 | BF21 |
| Growth at (°C) | 4 | − | − | 10 | − | − | 27 | + | + | 37 | + | + | 45 | + | + | 55 | + | + | 65 | − | − | 4 | − | − |
| Growth at different pH | 4.5 | − | − | 5.5 | + | + | 6.5 | + | + | 7.5 | + | + | 8.5 | + | + | 9.5 | + | + | 10.5 | − | − |
| Biochemical tests | Indole | − | − | MR | − | − | VP | + | + | Citrate | + | + |
| Oxygen requirement | A | A |
| Spore staining | + | + |
| Motility | + | + |
| Sugar utilization | Arabinose | − | − | Glucose | + | + | Sucrose | + | + | Lactose | − | − | Fructose | + | + | Maltose | + | + | Mannitol | + | + | Xylose | − | − | Glycerol | + | + | Galactose | − | − | Starch | + | + |
| Enzymatic activity | Oxidase | − | − | Catalase | + | + | Urease | − | − | Nitrate reduction | + | + | Gelatinase | + | + | Caseinase | + | + | Amylase | + | + | -Galactosidase | − | − |
| Salt Tolerance (%) | 2 | + | + | 5 | + | + | 7 | + | + | 10 | − | − |
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