| Galactobacter caseinivorans |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Actinomycetota, Class Actinomycetes, Order Micrococcales, Family Micrococcaceae, Genus Galactobacter, Galactobacter
caseinivorans Hahne et al. 2019.
caseinivorans Hahne et al. 2019.
Gram-positive rods, 0.7-1.1 x 1.3-1.7 µm. Non-motile. Rod-coccus life cycle is not
present.
present.
Colonies on TSA incubated at 30 ºC for 48 h are 2 mm in diameter, white, shiny and
entire-edged. Growth occurs at 4 ºC but not at 37 ºC, optimum temperature is 20 ºC.
Tolerates maximum 10% NaCl. Growth at pH 6.0-8.0, optimum at pH 7.0. Aerobic.
entire-edged. Growth occurs at 4 ºC but not at 37 ºC, optimum temperature is 20 ºC.
Tolerates maximum 10% NaCl. Growth at pH 6.0-8.0, optimum at pH 7.0. Aerobic.
Isolated from raw cow’s milk with high bacterial counts from the bulk tank of a dairy farm in Germany.
Undetermined.
- Hahne J, Isele D, Heidler von Heilborn D, Czaja-Hasse L, Huttel B, Lipski A. Galactobacter caseinivorans gen. nov., sp. nov. and
Galactobacter valiniphilus sp. nov., two novel species of the family Micrococcaceae, isolated from high bacterial count raw cow's
milk. Int J Syst Evol Microbiol 2019; 69:2862-2869.
Positive results for acid phosphatase, catalase, esterase (C4), esterase lipase (C8), leucine arylamidase,
naphtol-AS-BI-phosphohydrolase and alpha-mannosidase. Proteolytic and lipolytic activity is detected on skim milk and tributyrin agar
at 4, 10 and 30 ºC.
Assimilate D-glucose and D-fructose.
Negative results for alpha- and beta-glucosidase, alpha- and beta-galactosidase (esculin), oxidase, trypsin, and valine arylamidase.
No assimilation of cellobiose and maltose.
Variable results for the assimilation of N-acetylglucosamine, methyl-alpha-D-glucopyranoside, glycerol, maltose, D-mannose,
melibiose, D-ribose, and trehalose.
naphtol-AS-BI-phosphohydrolase and alpha-mannosidase. Proteolytic and lipolytic activity is detected on skim milk and tributyrin agar
at 4, 10 and 30 ºC.
Assimilate D-glucose and D-fructose.
Negative results for alpha- and beta-glucosidase, alpha- and beta-galactosidase (esculin), oxidase, trypsin, and valine arylamidase.
No assimilation of cellobiose and maltose.
Variable results for the assimilation of N-acetylglucosamine, methyl-alpha-D-glucopyranoside, glycerol, maltose, D-mannose,
melibiose, D-ribose, and trehalose.
(c) Costin Stoica
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