Prebiotic Dietary Fibers and Gut Microbiota Modulation

Prebiotic dietary fibres are non-digestible carbohydrate compounds that resist host enzymatic breakdown yet are fermented by the resident microbial community within the colon. These fibres comprise a diverse range of sources, including inulin‐type fructans, galacto‐oligosaccharides, resistant starches and highly branched neo‐fructans derived from plants. On fermentation by gut bacteria, prebiotics stimulate the selective proliferation of commensal microorganisms such as Bifidobacterium and Lactobacillus species, thereby enriching beneficial microbial taxa and restoring ecological balance. A principal outcome of this fermentation process is the generation of short‐chain fatty acids (SCFAs), especially acetate, propionate and butyrate, which exert multifaceted effects on host physiology. These metabolites contribute to maintenance of gut barrier integrity, modulation of immune responses, regulation of energy homeostasis and suppression of low‐grade inflammation. In recent years, mechanistic and clinical studies have elucidated the dose–response relationships of prebiotic fibres and their matrix effects in functional foods, highlighting their potential to attenuate metabolic endotoxaemia, improve glycaemic control and support neuroprotective pathways. Moreover, advances in biotechnological modification of fibre structures, including bioconjugation with fatty acid moieties, have refined the selectivity and efficacy of prebiotic interventions. The global significance of prebiotic fibres extends to the prevention and management of cardiometabolic disorders, inflammatory bowel conditions and age‐related dysbiosis, fostering a paradigm shift towards microbiota‐targeted nutritional strategies. Emerging applications encompass synbiotic formulations, personalised dietary regimens based on microbial signatures and integration of prebiotics into conventional diets to achieve sustainable health benefits at the population level.

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Prebiotic Dietary Fibers and Gut Microbiota Modulation publication trend

The graph below shows the total number of articles in prebiotic dietary fibers and gut microbiota modulation across all publications each year (not limited to Nature Index journals).

Technical terms

Prebiotic: A substrate selectively utilised by host microorganisms that confers a health benefit.

Gut microbiota: The community of microorganisms residing in the gastrointestinal tract.

Short-chain fatty acids (SCFAs): Fatty acids with fewer than six carbons produced by microbial fermentation, including acetate, propionate and butyrate.

Metabolic endotoxaemia: Elevated circulating levels of bacterial lipopolysaccharide leading to systemic inflammation.

Dysbiosis: A state of microbial imbalance associated with disease processes in the host.

References

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