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. 2021 Sep 30;32(3):97–118. doi: 10.21315/tlsr2021.32.3.6

Table 2.

Morphological, physiological and biochemical characteristics of isolates.

Characteristic Group I II III IV V VI






CP15 CP17 CP20 CP21 CPK29 PM44 CK33 CPK22 CPK35 HT31 CP25 CP27 CP28 HT24
Gram staining +
Colony colour* CB BP PY CB CW CW
Soluble pigment* B B B B B B B Y Y Y
Growth at 40°C w w w w w w w w + + w +
 at 45°C w w w
Growth in 1% NaCl w w w w w + + + +
 in 3% NaCl + + + +
Oxidase + + + + + +
VP +
Ornithine decarboxylation + + +
Nitrate reduction +
Lactate oxidation + + + + + + w + + +
Acetate oxidation + + +
Citrate utilisation + + +
Aesculin hydrolysis + + + +
Gelatin hydrolysis + + + +
β-Hemolysis +
Acid production from:
 D-Mannitol + +
 D-Maltose + +
 D-Sorbitol +
 Ducitol +
 Glycerol +
 Ethanol +
 Sucrose + + w w w w + + + + w w
 Lactose w +
 Raffinose w +
 Adonitol + +

Note:

*

CB = Creamy-beige; CW = Creamy-white; BP = Beige to pink; PY = Pink-yellowish white; B = Brown; Y = Yellow.

+ = positive reaction; w = weak reaction; − =, negative reaction