Journal
FOOD CHEMISTRY
Volume 134, Issue 4, Pages 2007-2013Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2012.03.131
Keywords
(1,3:1,4)-beta-D-glucan; Arabinoxylan; Bile salt; Viscosity; Dialysis kinetics
Funding
- CSIRO
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The kinetics of passage of a model bile salt and complete porcine bile across a dialysis membrane, in the presence and absence of two cereal-derived soluble dietary fibre polysaccharides, were studied as a model for passage across the unstirred water layer that lines the small intestine. A first-order kinetic analysis allowed rate coefficients to be derived which quantified the effectiveness of barley mixed linkage beta-glucan and wheat arabinoxylan in retarding the transport of bile. For both, a model bile salt and complete porcine bile, rate coefficients decreased with both concentration and viscosity. A combination of viscosity and molecular interaction effects is suggested to control the effect of the two polysaccharides on the transport of bile. (C) 2012 Elsevier Ltd. All rights reserved.
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