Pubblicazione scientifica

Prebiotic Wheat Bran Fractions Induce Specific Microbiota Changes

FILONE TECNOLOGICO	TEMA
trasformazione e commercializzazione	certificazione e marchi di qualità macchinari di ausilio alla lavorazione e trasformazione del pesce sistemi di packaging, etichettatura e conservazione dei prodotti

RIASSUNTO

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 butyrate-producing 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.

DATA

Data di pubblicazione: 24/01/2018

AUTORI

D’HOE KEVIN
CONTERNO LORENZA
FAVA FRANCESCA
FALONY GWEN
VIEIRA-SILVA SARA
VERMEIREN JOAN
TUOHY KIERAN
RAES JEROEN

ENTE DI AFFERENZA

LAB OF MOLECULAR BACTERIOLOGY DEPT MICROBIOLOGY & IMMUNOLOGY REGA INST
JEROEN RAES LAB VIB KU LEUVEN CTR MICROBIOLOGY LEUVEN BELGIUM
RESEARCH GROUP OF MICROBIOLOGY DEPT BIOENGINEERING SCIENCES VRIJE UNIV BRUSSEL BRUSSELS BELGIUM
DEPT FOOD QUALITY & NUTRITION RSCH & INNOV CTR FNDN EDMUND MACH TRENTO ITALY
FERMENTATION & DISTILLATION LAIMBURG RSCH CTR BOLZANO ITALY
CARGILL R & D CTR EUR BVBA VILVOORDE BELGIUM

RIVISTA

Frontiers in Microbiology, 9, 31

IMPACT FACTOR

4,190

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