Discrimination between Bifidobacterium Species from Human and Animal Origin by PCR-Restriction Fragment Length Polymorphism
Bifidobacteria are normal intestinal flora in humans and animals. The genus Bifidobacterium includes 31 species of significant host specificity. Taking into account their properties, we proposed
to use bifidobacteria as fecal contamination indicators. PCR-restriction fragment length polymorphism on the 16S rDNA gene was used to distinguish the different Bifidobacterium species. Sixty-four
strains belonging to 13 different species were differentiated from animal or human origin using one or two restriction enzymes. Moreover, the primers used were specifics of the Bifidobacterium genus.
Therefore, this method made it possible to determine both the presence of bifidobacteria in a sample and its origin of contamination.
Document Type: Short Communication
University of Liege, Faculty of Veterinary Medicine, Food Sciences Department, Sart Tilman, B43b 4000 Liege, Belgium