| Bifidobacterium aquikefiri |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum “Actinobacteria”, Class Actinobacteria, Order Bifidobacteriales, Family Bifidobacteriaceae, Genus Bifidobacterium,
Bifidobacterium aquikefiri Laureys, Cnockaert, De Vuyst and Vandamme, 2016.
Bifidobacterium aquikefiri Laureys, Cnockaert, De Vuyst and Vandamme, 2016.
Gram-positive short rods, 0,5-1.0/1-2 µm. Non-motile. Non-spore-forming.
Colonies are convex, cream-coloured, smooth, translucent, 1 mm in diameter after 6
days of anaerobic incubation at 28 ºC on M144 agar (per litre: 23 g special peptone
Oxoid, 1 g soluble starch Merck, 5 g NaCl Merck, 0.3 g cysteine hydrochloride
Sigma-Aldrich, 5 g glucose Merck, 15 g agar Oxoid). Optimum growth temperature 28
ºC; range 4-37 ºC. Grows at pH 4.0-8.0. Facultatively anaerobic.
days of anaerobic incubation at 28 ºC on M144 agar (per litre: 23 g special peptone
Oxoid, 1 g soluble starch Merck, 5 g NaCl Merck, 0.3 g cysteine hydrochloride
Sigma-Aldrich, 5 g glucose Merck, 15 g agar Oxoid). Optimum growth temperature 28
ºC; range 4-37 ºC. Grows at pH 4.0-8.0. Facultatively anaerobic.
Isolated from a household water kefir fermentation process, Belgium.
Undetermined.
- 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.
Description is based mostly on API ZYM (5 h anaerobic incubation AnaeroGen Oxoid at 28 ºC), API 50 CHL (6-13 days anaerobic
incubation AnaeroGen Oxoid at 28 ºC).
Positive results for acid phosphatase (weak), alpha- and beta-galactosidase, alpha- and beta-glucosidase, leucine arylamidase,
naphtol-AS-BI-phosphohydrolase (weak), acid production from amygdalin (weak), L-arabinose, D-fructose, D-galactose, gentiobiose,
D-glucose, gluconate, maltose, D-mannitol (weak), D-mannose, melibiose, methyl alpha-D-glucopyranoside, N-acetylglucosamine
(weak), raffinose, D-ribose, sucrose, and D-turanose.
Negative results for alkaline phosphatase, casein hydrolysis, catalase, cystine arylamidase, esterase C4, esterase lipase C8,
lipase, alpha-fucosidase, gelatin hydrolysis, beta-glucuronidase, N-acetyl-beta-glucosaminidase, alpha-mannosidase, oxidase,
trypsin, chymotrypsin, valine arylamidase, acid production from D-adonitol, D-arabinose, D- and L-arabitol, arbutin, cellobiose,
dulcitol, erythritol, esculin, D- and L-fucose, glycogen, glycerol, inositol, inulin, 2- and 5-ketogluconate, D-lactose, D-lyxose,
melezitose, methyl alpha-D-mannopyranoside, methyl beta-D-xylopyranoside, rhamnose, salicin, D-sorbitol, sorbose, starch,
D-tagatose, trehalose, xylitol, D- and L-xylose.
incubation AnaeroGen Oxoid at 28 ºC).
Positive results for acid phosphatase (weak), alpha- and beta-galactosidase, alpha- and beta-glucosidase, leucine arylamidase,
naphtol-AS-BI-phosphohydrolase (weak), acid production from amygdalin (weak), L-arabinose, D-fructose, D-galactose, gentiobiose,
D-glucose, gluconate, maltose, D-mannitol (weak), D-mannose, melibiose, methyl alpha-D-glucopyranoside, N-acetylglucosamine
(weak), raffinose, D-ribose, sucrose, and D-turanose.
Negative results for alkaline phosphatase, casein hydrolysis, catalase, cystine arylamidase, esterase C4, esterase lipase C8,
lipase, alpha-fucosidase, gelatin hydrolysis, beta-glucuronidase, N-acetyl-beta-glucosaminidase, alpha-mannosidase, oxidase,
trypsin, chymotrypsin, valine arylamidase, acid production from D-adonitol, D-arabinose, D- and L-arabitol, arbutin, cellobiose,
dulcitol, erythritol, esculin, D- and L-fucose, glycogen, glycerol, inositol, inulin, 2- and 5-ketogluconate, D-lactose, D-lyxose,
melezitose, methyl alpha-D-mannopyranoside, methyl beta-D-xylopyranoside, rhamnose, salicin, D-sorbitol, sorbose, starch,
D-tagatose, trehalose, xylitol, D- and L-xylose.
(c) Costin Stoica
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