Subtle Variations in Dietary-Fiber Fine Structure Differentially Influence the Composition and Metabolic Function of Gut Microbiota.

ABSTRACT: The chemical structures of soluble fiber carbohydrates vary from source to source due to numerous possible linkage configurations among monomers. However, it has not been elucidated whether subtle structural variations might impact soluble fiber fermentation by colonic microbiota. In this study, we tested the hypothesis that subtle structural variations in a soluble polysaccharide govern the community structure and metabolic output of fermenting microbiota. We performed in vitro fecal fermentation studies using arabinoxylans (AXs) from different classes of wheat (hard red spring [AX_HRS], hard red winter [AX_HRW], and spring red winter [AX_SRW]) with identical initial microbiota. Carbohydrate analyses revealed that AX_SRW was characterized by

SUBMITTER: Tuncil YE 

PROVIDER: S-EPMC7203452 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature