Table 2.
Preliminary biochemical tests for isolated bacterial strains.
| Characteristics | KPW.1-S1 | HRW.1-S3 | DSW.1-S4 |
|---|---|---|---|
| Gram nature | Negative | Negative | Negative |
| Shape | Rod | Coccobacillary | Coccobacillary |
| Diffusible pigments | + | + | − |
| Motility | + | + | + |
| Citrate utilization | ++ | ++ | ++ |
| Lysine utilization | + | + | + |
| Ornithine utilization | + | + | + |
| Urease test | − | − | − |
| Phenylalanine test | NC | NC | NC |
| Nitrate reduction | NC | NC | NC |
| H2S production | +++ | ++ | + |
| Production of acid by utilization of sugar∗ |
|||
| (i) Glucose | − | − | − |
| (ii) Adonitol | − | − | − |
| (iii) Lactose | − | − | − |
| (iv) Arabinose | − | − | − |
| (v) Sorbitol | − | − | − |
NC: not conclusive.
∗The test attributed the change of the color of pH indicator by production of acid and gas when grown in presence of various sugars.