Table 3.
Morphological and biochemical properties of the PAH-degrading bacterial isolates
| Parameter | A. faecalis | M. varians | P. putida |
|---|---|---|---|
| Gram reaction | – | + | – |
| Cellular morphology | Rods | Cocci | Short rods |
| Catalase | + | + | + |
| Oxidase | + | + | + |
| Indole | – | – | – |
| Motility | + | – | + |
| Methyl red | – | – | – |
| Voges-Proskauer | – | – | – |
| Citrate | + | + | – |
| Urease | – | – | – |
| Starch hydrolysis | – | – | – |
| Gelatin hydrolysis | – | + | – |
| NO3 reduction | + | + | + |
| Coagulase test | – | – | – |
| Spore test | – | – | – |
| Mannitol | – | – | – |
| Glucose | + | + | + |
| Xylose | – | + | + |
| Lactose | – | – | – |
| Sucrose | + | + | – |
| Arabinose | – | – | – |
| Maltose | – | + | – |
| Galactose | + | – | – |