In vitro fermentation kinetics and end-products of cereal arabinoxylans and (1,3;1,4)-beta-glucans by porcine feces

Williams, Barbara A., Mikkelsen, Deirdre, Le Paih, Laure and Gidley, Michael J. (2011) In vitro fermentation kinetics and end-products of cereal arabinoxylans and (1,3;1,4)-beta-glucans by porcine feces. Journal of Cereal Science, 53 1: 53-58. doi:10.1016/j.jcs.2010.09.003


Author Williams, Barbara A.
Mikkelsen, Deirdre
Le Paih, Laure
Gidley, Michael J.
Title In vitro fermentation kinetics and end-products of cereal arabinoxylans and (1,3;1,4)-beta-glucans by porcine feces
Formatted title
In vitro fermentation kinetics and end-products of cereal arabinoxylans and (1,3;1,4)-β-glucans by porcine feces
Journal name Journal of Cereal Science   Check publisher's open access policy
ISSN 0733-5210
Publication date 2011-01-01
Year available 2010
Sub-type Article (original research)
DOI 10.1016/j.jcs.2010.09.003
Volume 53
Issue 1
Start page 53
End page 58
Total pages 6
Place of publication United Kingdom
Publisher Academic Press
Language eng
Abstract Purified and semi-purified polysaccharides characteristic of cereals were fermented in vitro with a pig faecal inoculum, using the cumulative gas production technique, to examine the kinetics and end-products of fermentation after 48 h. It was shown that arabinoxylan and mixed linkage (1,3;1,4) β-glucan were rapidly fermented if soluble, while less soluble substrates (insoluble arabinoxylan, maize and wheat starch granules, and bacterial cellulose) were more slowly fermented. Relevant monosaccharides were fermented at very similar rates to soluble polymeric arabinoxylan and β-glucan, showing that depolymerisation was not a limiting step, in contrast to some previous studies. Bacterial cellulose is shown to be a useful model substrate for fermentation of plant cellulose which is difficult to obtain without harsh chemical treatments. Fermentation end-products were related to kinetics, with slow carbohydrate fermentation resulting in increased protein fermentation. Ratios of short-chain fatty acid products were similar for all arabinoxylan and β-glucan substrates. © 2010 Elsevier Ltd.
Keyword β-glucan
Arabinoxylan
Cumulative gas production
In vitro fermentation
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2011 Collection
Centre for Nutrition and Food Sciences Publications
 
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Created: Fri, 18 Mar 2011, 23:56:57 EST by Dr Deirdre Mikkelsen on behalf of Centre for Nutrition and Food Sciences