Table 1.
Morphological and biochemical characterisation of Streptomyces sp.
| Characteristics | Results |
|---|---|
| morphological characterisation | |
| spore chains | spiral |
| spore mass | grey |
| spore surface | smooth |
| colour of aerial mycelium | white |
| colour of substrate mycelium | brown |
| motility | non‐motile |
| biochemical tests | |
| indole test | − |
| MR‐VP test | − |
| Simmon citrate agar test | + |
| nitrate test | − |
| starch hydrolysis test | + |
| gelatin test | − |
| urease test | + |
| triple sugar iron test | − |
| catalase test | + |
| casein hydrolysis | − |
| acid production from carbohydrates | |
| dextrose | ++ |
| fructose | ++ |
| inositol | − |
| lactose | + |
| maltose | + |
| mannitol | + |
| sucrose | + |
| xylose | − |
| growth at different pH | |
| 3 | − |
| 5 | + |
| 7 | +++ |
| 9 | + |
| growth at different temperature | |
| 15 | + |
| 20 | ++ |
| 25 | +++ |
| 35 | ++ |
| other conditions | |
| agitator speed | 220 rpm |
| dissolved oxygen | 0.3 gm/l |
| aeration | ∼6 psi |
| media volume | 2 l |
−, Negative reaction/no growth; +, positive reaction/moderate growth; ++, good growth; +++,optimised growth.