In vitro kinetic analysis of fermentation of prebiotic inulin-type fructans by Bifidobacterium species reveals four different phenotypes.

ABSTRACT: Kinetic analyses of bacterial growth, carbohydrate consumption, and metabolite production of 18 Bifidobacterium strains grown on fructose, oligofructose, or inulin were performed. A principal component analysis of the data sets, expanded with the results of a genetic screen concerning the presence of a beta-fructofuranosidase gene previously encountered in Bifidobacterium animalis subsp. lactis DSM 10140(T), revealed the existence of four clusters among the bifidobacteria tested. Strains belonging to a first cluster could not degrade oligofructose or inulin. Strains in a second cluster could degrade oligofructose, displaying a preferential breakdown mechanism, but did not grow on inulin. Fructose consumption was faster than oligofructose degradation. A third cluster was composed of strains

SUBMITTER: Falony G 

PROVIDER: S-EPMC2620708 | biostudies-literature | 2009 Jan

REPOSITORIES: biostudies-literature