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 497158
Title Characterization of (Glucurono)arabinoxylans from Oats Using Enzymatic Fingerprinting
Author(s) Tian, Lingmin; Gruppen, Harry; Schols, Henk A.
Source Journal of Agricultural and Food Chemistry 63 (2015)50. - ISSN 0021-8561 - p. 10822 - 10830.
Department(s) Food Chemistry Group
Publication type Refereed Article in a scientific journal
Publication year 2015
Keyword(s) arabinoxylan - Avena sativa - cell wall polysaccharides - distribution - enzymatic fingerprinting - oats

Cell wall material from whole oat grains was sequentially extracted to study the structural characteristics of individual arabinoxylan (AX) populations. Araf was singly substituted at both O-3 (mainly) and O-2 positions of Xylp, and no disubstitution of Xylp with Araf residues was found in oat AXs. Both highly substituted and sparsely substituted segments were found in AXs in Ba(OH)2 extracts, whereas AXs in 1 and 6 M NaOH extracts were rarely branched and easily aggregated. Both O-2-linked GlcA and 4-O-MeGlcA residues were present in oat AXs. A series of AX oligomers with galactose as a substituent was detected for the first time in oats. The present study suggested that the distribution of Araf was contiguous in oat AXs, different from the homogeneous distribution of Araf in wheat and barley AXs, which might result in different fermentation patterns in humans and animals.

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