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Bifidobacteria in the intestinal tract of infants: an in-vitro study

C L Bullen, P V Tearle

    Journal of Medical Microbiology
    |August 1, 1976
    PubMed

    Insights

    Breast milk

    Area of Science:

    • Microbiology
    • Infant Nutrition
    • Gut Microbiome

    Background:

    • The gut microbiome of newborn infants is crucial for health.
    • Bifidobacteria play a key role in infant gut health.
    • Factors influencing bifidobacterial flora and low pH are important.

    Purpose of the Study:

    • To investigate factors influencing bifidobacterial flora in newborn infants.
    • To understand the role of bacterial metabolites in gut health.
    • To identify key components of breast milk that support a healthy infant gut.

    Main Methods:

    • In-vitro studies were conducted.
    • Analysis of bacterial metabolism end products in the large intestine.
    • Examination of the composition of infant fecal flora.

    Main Results:

    • Acetic acid and other bacterial metabolites suppress Gram-negative organisms.
    • Bifidobacteria are unaffected by these metabolites.
    • Breast milk composition (high lactose, low protein, low phosphate) supports bifidobacteria.

    Conclusions:

    • Bacterial metabolites play a role in shaping the infant gut microbiome.
    • Dietary factors, particularly breast milk composition, significantly influence gut flora.
    • Maintaining a bifidobacterial flora and low pH is achievable through specific dietary interventions.

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