Table 2.
Biochemical and physiological traits of the strain Al-Dhabi-2.
| Characteristics | Results |
|---|---|
| Gram stain | Positive |
| Growth | Filamentous aerial growth |
| diffusible pigment production | – |
| Melanoid production | – |
| Growth temperature range | 29 °C to 55 °C |
| Growth optimal temperature | 50 °C |
| Growth pH range | 5–9 |
| Optimal pH for growth | 7.0 |
| Production of H2S | − |
| Amylase | + |
| Protease | − |
| Gelatinase | + |
| deoxyribonuclease (DNase) production | + |
| NaCl tolerant | 4% to 7% |
| Carbon sources utilization | |
| Negative control; none carbon source | − |
| Positive control; glucose | ++ |
| Sucrose | − |
| D-fructose | + |
| D-rhamnose | ++ |
| D-Xylose | ++ |
| D-arabinose | ++ |
| D-manitol | ++ |
| Sensitivity to antibiotics | |
| Ciprofloxacin (5 µg) | S |
| Gentamicin (10 µg) | S |
| Penicillin (10 µg) Ampicillin (25 µg) |
R R |
| Chloramphenicol (30 µg) | S |
| Vancomycin (30 µg) | S |
| Tetracycline (30 µg) | S |
| Nystatin (100 µg) | R |
+: presence; −: absence; S: Sensitive; R: Resistance.