Table I.
Parameters | Characteristics |
---|---|
Morphology | Rods with rounded ends. Finely wrinkled, dull, opaque, adherent colonies on nutrient agar plate. |
Gram’s reaction | Positive |
Growth factors | |
Oxygen | Strict aerobe |
Temperature | Growth at 35°C, range, 25–45°C |
pH | Optimum 7.0, range, 5.0–9.0 |
Biochemical reaction | |
Indole | Positive |
Methyl Red | Negative |
Vogues Prosker | Positive |
Citrate | Utilized |
Starch hydrolysis | Positive |
Nitrite | Formed from nitrate |
Fermentation reaction | |
Glucose, fructose, galactose, lactose and sucrose | Acid |