The synergistic synbiotic potential of 1-kestose and Bifidobacterium longum in the mouse gut

•1-Kestose is bifidogenic prebiotcs.•Synbiotics stimulate gut microbiota either complementary or synergistically.•1-Kestose synergistically stimulates ingested Bifidobacterium longum in the mouse cecum.•Our regimen provides evidence of the synergistic impact of synbiotics without alteration of indigenous microbiota profiles in the mouse.