| Bifidobacterium thermophilum |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum “Actinobacteria”, Class Actinobacteria, Order Bifidobacteriales, Family Bifidobacteriaceae, Genus Bifidobacterium,
Bifidobacterium thermophilum Mitsuoka 1969.
Synonym: Bacillus ruminale Scardovi, Trovatelli, Crociana and Sgorbati 1969.
Bifidobacterium thermophilum Mitsuoka 1969.
Synonym: Bacillus ruminale Scardovi, Trovatelli, Crociana and Sgorbati 1969.
Slender rods, 3-8 µm, slightly curved often with tapered ends, protuberances or
irregularities, branchings rare and arranged singly or in pairs; aged cells often
banded and take Gram-stain irregularly.
irregularities, branchings rare and arranged singly or in pairs; aged cells often
banded and take Gram-stain irregularly.
Pantothenate, pyridoxine and riboflavin are required for growth. Anerobic. Optimum
growth temperature is 36-38 ºC. Can grow at 46.5 ºC and pH 6.5-7.0. No growth at pH
5.0 or pH 8.0.
growth temperature is 36-38 ºC. Can grow at 46.5 ºC and pH 6.5-7.0. No growth at pH
5.0 or pH 8.0.
Isolated from bovine rumen, faeces of swine, chickens, suckling calves and baby, sewage.
Undetermined.
- Biavati B, Mattarelli P, 2012. Genus I. Bifidobacterium Orla-Jensen 1924. In: Parte et al. (ed). Bergey’s manual of systematic
bacteriology: The Actinobacteria, Part A and B. Springer, New York, 171-206. - Rogosa M. 1975. Genus III. Bifidobacterium Orla-Jensen 1924. In: Buchanan RE & Gibbons NE (ed). Bergey’s Manual of
Determinative Bacteriology, Eight Edition, The Williams & Wilkins Company, Baltimore, 669-676.
Positive results for acid production from amylose, amylopectin, D-fructose, D-galactosamine, D-galactose, glucose, maltose,
melibiose, raffinose, starch, and sucrose.
Negative results for catalase, indole production, nitrate reduction, acid production from adonitol, dextran, dulcitol, erythritol, L- and D-
fucose, gluconate, D-glucuronate, glycerol, inositol, D-mannitol, D-mannose, alpha-methyl-D-mannoside, porcine gastric mucin,
rhamnose, D-ribose, and D-sorbitol.
Variable results for acid production from amygdalin, L-arabinose, cellobiose, esculin, D-glucosamine, inulin, D-lactose, melezitose,
pectin, salicin, trehalose, xylose and xylan.
melibiose, raffinose, starch, and sucrose.
Negative results for catalase, indole production, nitrate reduction, acid production from adonitol, dextran, dulcitol, erythritol, L- and D-
fucose, gluconate, D-glucuronate, glycerol, inositol, D-mannitol, D-mannose, alpha-methyl-D-mannoside, porcine gastric mucin,
rhamnose, D-ribose, and D-sorbitol.
Variable results for acid production from amygdalin, L-arabinose, cellobiose, esculin, D-glucosamine, inulin, D-lactose, melezitose,
pectin, salicin, trehalose, xylose and xylan.
(c) Costin Stoica
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