Polymerase chain reaction and denaturing gradient gel electrophoresis monitoring of fecal Bifidobacterium populations in a prebiotic and probiotic feeding trial

Reetta Satokari, Elaine Vaughan, Antoon Akkermans, Maria Saarela, Willem de Vos

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78 Citations (Scopus)


A culture-independent approach based on genus-specific PCR and denaturing gradient gel electrophoresis (DGGE) was used to monitor qualitative changes in fecal bifidobacterial communities in a human feeding trial. DNA was extracted directly from feces and bifidobacterial 16S rDNA sequences were amplified using genus-specific PCR. The PCR fragments were subsequently separated in a sequence-specific manner by DGGE in order to obtain a profile of bifidobacterial fragments. The DGGE profiles revealed that in general, administration for two weeks of galactooligosaccharide and/or Bifidobacterium lactis Bb-12 (8 g and 3 × 1010 cfu per day, respectively) did not affect the qualitative composition of the indigenous Bifidobacterium population, while B. lactis Bb-12 transiently colonised the gut.
Original languageEnglish
Pages (from-to)227-231
Number of pages5
JournalSystematic and Applied Microbiology
Issue number2
Publication statusPublished - 2001
MoE publication typeA1 Journal article-refereed


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