Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 507132
Title Effects of in vitro fermentation of barley β-glucan and sugar beet pectin using human fecal inocula on cytokine expression by dendritic cells
Author(s) Rosch, Christiane; Taverne, Nico; Venema, Koen; Gruppen, Harry; Wells, Jerry M.; Schols, Henk A.
Source Molecular Nutrition & Food Research 61 (2017)1. - ISSN 1613-4125
Department(s) Food Chemistry Group
Host Microbe Interactomics
Publication type Refereed Article in a scientific journal
Publication year 2017
Keyword(s) Batch fermentation - Dendritic cells - Digesta - Human fecal inocula - Immunomodulation

Scope: This study simulates the fermentation process of barley β-glucan and sugar beet pectin in the human colon and monitors the degradation products formed. Additionally, immune effects of the degradation products were investigated. Methods and results: Immunostimulatory activity of fermentation digesta was investigated using bone marrow derived dendritic cells (BMDCs) from toll-like receptor 2/4 (TLR2/4) knockout mice, which were unresponsive to microbe-associated molecular patterns. Cytokine responses were elicited to dietary fibers and not to the SCFA and microbiota. The fermentation digesta were analyzed for their SCFA profiles and glycan metabolites over time. During fermentation the amount of insoluble precipitating fibers increased and induced as well as soluble molecules of lower molecular mass greater amounts of cytokines in BMDCs than the parental fiber. Additionally, high amounts of cytokines can be attributed to soluble galactose-rich beet pectin molecules. Conclusions: The fermentation of the two fibers led to fiber-specific amounts of SCFA, glycosidic metabolites, and different immunomodulatory properties. BMDC from TLR2/4 knockout mice did not respond to the digest microbiota and SCFA, making it a useful approach to study temporal effects of fermentation on the immunomodulatory effects of fibers.

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