Bifidobacterium magnum
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum “Actinobacteria”, Class Actinobacteria, Order Bifidobacteriales, Family Bifidobacteriaceae, Genus Bifidobacterium,  
Bifidobacterium magnum
Scardovi and Zani 1974.
Gram-positive long, thick, irregular rods, 2/10-20 µm, occurring in aggregates; long
branches are common and some cells have tapered ends or are spindle shaped.
Non-motile. Non-spore-forming.
Colonies are raised with elevated central area, whitish to gray, opaque and soft.
Tween 80 is stimulatory.
Growth temperature 28-43 ºC, optimum 37-39 ºC. Optimum
pH range is 5
.3-5.5; not growing at pH 4.2 and 7.0. Anaerobic.
Isolated from feces of adult rabbits.
Undetermined.
  1. 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.
  2. Scardovi V, and Zani G, 1974. Bifidobacterium magnum sp. nov., a large, acidophilic Bifidobacterium isolated from rabbit feces. Int J
    Syst Bacteriol 24(1), 29-34.
Positive results for acid production from L-arabinose, D-fructose, D-galactose, D-glucose, D-glucosamine, D-lactose, maltose,
melibiose, raffinose, D-ribose, sucrose, and D-xylose.

Negative results for ammonia production from urea or arginine, catalase, gelatin liquefaction, indole production, nitrate reduction,
Voges-Proskauer test acid production from cellobiose, dextrin, D- and L-fucose, gluconate, D-glucuronate, glycerol, inulin, D-
mannitol, D-mannose, melezitose, pectin, porcine gastric mucin, rhamnose, salicin, D-sorbitol, starch, trehalose, and xylan.

Variable results for acid production from amylopectin, amylose and D-galactosamine.
(c) Costin Stoica
Antibiogram
Encyclopedia
Culture media
Biochemical tests
Stainings
Images
Movies
Articles
Identification
Software
R E G N U M
PROKARYOTAE
Previous page
Back