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Prebiotic Wheat Bran Fractions Induce Specific Microbiota Changes.
- Source :
- Frontiers in Microbiology; 1/24/2018, p1-N.PAG, 11p
- Publication Year :
- 2018
-
Abstract
- Wheat bran fibers are considered beneficial to human health through their impact on gut microbiota composition and activity. Here, we assessed the prebiotic potential of selected bran fractions by performing a series of fecal slurry anaerobic fermentation experiments using aleurone as well as total, ultrafine, and soluble wheat bran (swb) as carbon sources. By combining amplicon-based community profiling with a fluorescent in situ hybridization (FISH) approach, we found that incubation conditions favor the growth of Proteobacteria such as Escherichia and Bilophila. These effects were countered in all but one [total wheat bran (twb)] fermentation experiments. Growth of Bifidobacterium species was stimulated after fermentation using ultrafine, soluble, and twb, in the latter two as part of a general increase in bacterial load. Both ultrafine and swb fermentation resulted in a trade-off between Bifidobacterium and Bilophila, as previously observed in human dietary supplementation studies looking at the effect of inulin-type fructans on the human gut microbiota. Aleurone selectively stimulated growth of Dorea and butyrateproducing Roseburia. All fermentation experiments induced enhanced gas production; increased butyrate concentrations were only observed following soluble bran incubation. Our results open perspectives for the development of aleurone as a complementary prebiotic selectively targeting colon butyrate producers. [ABSTRACT FROM AUTHOR]
- Subjects :
- WHEAT bran
GUT microbiome
PREBIOTICS
Subjects
Details
- Language :
- English
- ISSN :
- 1664302X
- Database :
- Complementary Index
- Journal :
- Frontiers in Microbiology
- Publication Type :
- Academic Journal
- Accession number :
- 127597433
- Full Text :
- https://doi.org/10.3389/fmicb.2018.00031