Journal
ANAEROBE
Volume 23, Issue -, Pages 74-81Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.anaerobe.2013.06.012
Keywords
Pectin; Guar gum; Inulin; Arabinoxylan; beta-glucan; Resistant starch
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Funding
- Agricultural Research Division of the University of Nebraska-Lincoln
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The effects of six dietary fibers [pectin, guar gum, inulin, arabinoxylan, beta-glucan, and resistant starch] on the human fecal microbiota during in vitro fermentation were determined. Bifidobacterium increased almost 25% on pectin compared with the control; a significant increase in Bifidobacterium adolescentis type-2 was observed on resistant starch. Bacteroides exhibited a positive correlation with propionate/short chain fatty acid (SCFA) production (r = 0.59, p < 0.01), while Ruminococcaceae and Faecalibacterium displayed positive correlations with butyrate/SCFA production (r = 0.39, 0.54, p < 0.01). A negative correlation was detected between inulin utilization and Subdoligranulum (r = 0.73, p <= 0.01), while strong positive relationships were found between beta-glucan utilization and Firmicutes (r = 0.73, p < 0.01) and resistant starch utilization and Blautia wexlerae (r = 0.82, p < 0.01). Dietary fibers have specific and unique impacts on intestinal microbiota composition and metabolism. These findings provide a rationale for the development of functional ingredients targeted towards a targeted modulation of the gut microbiota. (c) 2013 Elsevier Ltd. All rights reserved.
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