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Dietary modulation of the human gut microflora using prebiotics
1Microbiology Department, Institute of Food Research, Reading, UK.
The British Journal of Nutrition
|January 30, 1999
Summary
Fructo-oligosaccharides (FOS) are beneficial prebiotics that selectively promote the growth of good gut bacteria like bifidobacteria. A daily intake of 4g FOS can significantly increase beneficial gut flora, improving host health.
Area of Science:
- Microbiology
- Nutrition Science
- Gastroenterology
Background:
- The human colonic microbiota possesses both beneficial and pathogenic properties.
- Modulating gut microbiota composition is of significant interest for improving host health.
- Prebiotics are non-viable food components selectively fermented by beneficial indigenous bacteria, such as bifidobacteria and lactobacilli.
Purpose of the Study:
- To explore the potential of fructo-oligosaccharides (FOS) as prebiotics.
- To investigate the selective fermentation of FOS by bifidobacteria in the colon.
- To establish the effective dosage and assess future research directions for prebiotic applications.
Main Methods:
- Review of current research on non-digestible oligosaccharides as prebiotics.
- Analysis of studies demonstrating specific fermentation of FOS by bifidobacteria.
- Examination of controlled feeding studies on FOS efficacy.
Main Results:
- Fructo-oligosaccharides (FOS) are non-digestible carbohydrates that occur naturally in various plants.
- FOS are specifically fermented by bifidobacteria, leading to their numerical dominance in feces.
- A daily dose of 4g FOS has been indicated as effective for prebiotic effects.
Conclusions:
- FOS meet the criteria for effective prebiotics due to their selective fermentation by bifidobacteria.
- Dietary modulation with FOS can positively influence gut microbiota composition.
- Further research is needed on microbiota determination, molecular methodologies, food sources, and health impacts of prebiotics.