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Article
In Vitro Bile Acid Binding of Flours from Oat Lines Varying in Percentage and Molecular Weight Distribution of β-Glucan
Journal of Agricultural and Food Chemistry
  • Sedat Sayar, Iowa State University
  • Jean-Luc Jannink, Iowa State University
  • Pamela J. White, Iowa State University
Document Type
Article
Publication Date
11-2-2005
DOI
10.1021/jf051380g
Abstract

Two experimental high β-glucan oat (Avena sativa) lines (7.64 and 8.05%) and two traditional lines (4.77 and 5.26% β-glucan) were used to evaluate the effect of β-glucan quantity and molecular weight on bile acid (BA) binding. The oat flour samples were digested by an in vitro system that simulated human digestion. No significant differences among oat type were found in the overall β-glucan, starch, and pentosan digestibilities. Considering the standard, cholestyramine, as 100% bound, the relative BA binding for the oat flour samples on a dry matter basis was in the range of 7.5−14.8%, which is higher than the values determined for some other grains and plant materials in the literature. Although the high β-glucan flours bound a high amount of BA, no significant correlations were found between β-glucan content in the flours and BA binding. Significant correlations were found between BA binding and insoluble dietary fiber content. Partial hydrolysis with lichenase of the β-glucan molecules did not affect the BA binding. A summary of all data suggested that BA binding is a multicomponent-dependent process.

Comments

Posted with permission from Journal of Agricultural and Food Chemistry 53 (2005): 8797–8803, doi:10.1021/jf051380g. Copyright 2005 American Chemical Society.

Copyright Owner
American Chemical Society
Language
en
Date Available
2013-10-30
File Format
application/pdf
Citation Information
Sedat Sayar, Jean-Luc Jannink and Pamela J. White. "In Vitro Bile Acid Binding of Flours from Oat Lines Varying in Percentage and Molecular Weight Distribution of β-Glucan" Journal of Agricultural and Food Chemistry Vol. 53 Iss. 22 (2005) p. 8797 - 8803
Available at: http://works.bepress.com/pamela_white/14/