| Bifidobacterium crudilactis |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum “Actinobacteria”, Class Actinobacteria, Order Bifidobacteriales, Family Bifidobacteriaceae, Genus Bifidobacterium,
Bifidobacterium crudilactis Delcenserie, Gavini, Beerens, Tresse, Franssen, Daube 2007.
Nomenclatural status: not validly published.
Bifidobacterium crudilactis Delcenserie, Gavini, Beerens, Tresse, Franssen, Daube 2007.
Nomenclatural status: not validly published.
Gram-positive irregular rods, 0,5/1.5-2.5 µm, occurring singly, with occasional
bifurcations and spatulated ends. Non-motile. Non-spore-forming.
bifurcations and spatulated ends. Non-motile. Non-spore-forming.
Colonies are convex, cream-coloured, 1 mm in diameter after 48 h of anaerobic
incubation at 39 ºC on TPY agar and less than 1 mm under aerobic conditions.
Optimum growth temperature 39 ºC; range 5-45 ºC; variable at 4 ºC within 14 days.
Grows at pH 4.7-8.0. Facultatively anaerobic.
incubation at 39 ºC on TPY agar and less than 1 mm under aerobic conditions.
Optimum growth temperature 39 ºC; range 5-45 ºC; variable at 4 ºC within 14 days.
Grows at pH 4.7-8.0. Facultatively anaerobic.
Isolated from raw milks and raw milk cheeses, France; the origin of the raw milk contamination was not known.
Undetermined.
- Delcenserie V, Gavini F, Beerens H, Tresse O, Franssen C, Daube G, 2007. Description of a new species, Bifidobacterium
crudilactis sp. nov., isolated from raw milk and raw milk cheeses. Syst Appl Microbiol 30, 381-389. - Laureys D, Cnockaert M, De Vuyst L and Vandamme P, 2016. Bifidobacterium aquikefiri sp. nov., isolated from water kefir. Int J Syst
Evol Microbiol 66, 1281-1286.
Positive results for acid and alkaline phosphatase (weak), arginine arylamidase, cystine arylamidase (weak), alpha- and
beta-galactosidase, alpha- and beta-glucosidase, glycine arylamidase, histidine arylamidase, leucine arylamidase,
naphtol-AS-BI-phosphohydrolase (weak), proline arylamidase, phenylalanine arylamidase, tyrosine arylamidase, acid production
from cellobiose, D-fructose, D-galactose, D-glucose, D-lactose, maltose, melibiose, raffinose, D-ribose, sucrose and D-turanose.
Negative results for alpha-arabinosidase, arginine dihydrolase, alpha-fucosidase, beta-glucuronidase, indole production, nitrate
reduction-N-acetyl-beta-glucosaminidase, urease, acid production from D-adonitol, amygdalin, D- and L-arabinose, D- and
L-arabitol, dulcitol, erythritol, D- and L-fucose, gentiobiose, glycogen, glycerol, inositol, inulin, 2- and 5-ketogluconate, D-lyxose,
D-mannitol, D-mannose, methyl beta-D-xylopyranoside, N-acetylglucosamine, rhamnose, salicin, D-sorbitol, sorbose, starch,
D-tagatose, trehalose, xylitol, D- and L-xylose.
Variable results for acid production from gluconate, melezitose and methyl alpha-D-glucopyranoside.
beta-galactosidase, alpha- and beta-glucosidase, glycine arylamidase, histidine arylamidase, leucine arylamidase,
naphtol-AS-BI-phosphohydrolase (weak), proline arylamidase, phenylalanine arylamidase, tyrosine arylamidase, acid production
from cellobiose, D-fructose, D-galactose, D-glucose, D-lactose, maltose, melibiose, raffinose, D-ribose, sucrose and D-turanose.
Negative results for alpha-arabinosidase, arginine dihydrolase, alpha-fucosidase, beta-glucuronidase, indole production, nitrate
reduction-N-acetyl-beta-glucosaminidase, urease, acid production from D-adonitol, amygdalin, D- and L-arabinose, D- and
L-arabitol, dulcitol, erythritol, D- and L-fucose, gentiobiose, glycogen, glycerol, inositol, inulin, 2- and 5-ketogluconate, D-lyxose,
D-mannitol, D-mannose, methyl beta-D-xylopyranoside, N-acetylglucosamine, rhamnose, salicin, D-sorbitol, sorbose, starch,
D-tagatose, trehalose, xylitol, D- and L-xylose.
Variable results for acid production from gluconate, melezitose and methyl alpha-D-glucopyranoside.
(c) Costin Stoica
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