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Bifidobacterium aquikefiri sp. nov., isolated from water kefir

, : Bifidobacterium aquikefiri sp. nov., isolated from water kefir. International Journal of Systematic and Evolutionary Microbiology (): -

NlmCategory="UNASSIGNED">A novel Bifidobacterium, strain LMG 28769T, was isolated from a household water kefir fermentation process. The cells were Gram-stain-positive, non-motile, non-spore-forming, catalase-negative, oxidase-negative, and facultatively anaerobic short rods. Analysis of its 16S rRNA gene sequence revealed Bifidobacterium crudilactis and Bifidobacterium psychraerophilum (97.4 % and 97.1 % similarity towards the respective type strain sequences) as nearest phylogenetic neighbors. Its assignment to the genus Bifidobacterium was confirmed by the presence of fructose 6-phosphate phosphoketolase (F6PPK) activity. Analysis of the hsp60 gene sequence revealed a very low similarity with nucleotide sequences in the NCBI nucleotide database. The genotypic and phenotypic analyses allowed to differentiate strain LMG 28769T from all established Bifidobacterium species. Strain LMG 28769T (= CCUG 67145T = R-54638T) therefore represents a new species, for which the name Bifidobacterium aquikefiri sp. nov. is proposed.


PMID: 26739269

DOI: 10.1099/ijsem.0.000877

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