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Fermentation of wheat bran and gum arabic in rats fed on an elemental diet

Published online by Cambridge University Press:  09 March 2007

D. J. Walter ,
M. A. Eastwood ,
W. G. Brydon  and
R. A. Elton
D. J. Walter
Affiliation:
Wolfson Laboratories, Gastrointestinal Unit, Department of Medicine, University of Edinburgh, Western General Hospital, Edinburgh EH4 2XU
M. A. Eastwood
Affiliation:
Wolfson Laboratories, Gastrointestinal Unit, Department of Medicine, University of Edinburgh, Western General Hospital, Edinburgh EH4 2XU
W. G. Brydon
Affiliation:
Wolfson Laboratories, Gastrointestinal Unit, Department of Medicine, University of Edinburgh, Western General Hospital, Edinburgh EH4 2XU
R. A. Elton
Affiliation:
Medical Statistics Unit, Faculty of Medicine, University of Edinburgh, Teviot Place, Edinburgh EH8 9AG
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Abstract

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1. Gum arabic and wheat bran were added to an elemental diet (100 g/kg) in order to study their metabolism in the caeca of adult male albino Wistar rats.

2. Dry stool weight (g/d) over 12 weeks was 0.70 (SE 0.05) on the elemental control diet. Wheat bran increased mean dry stool weight to 1.09 (SE 0.08), an increase of 56 %. There was no significant difference between faecal weights (0.65 (SE 0.08)) of the gum-arabic-supplemented group and the unsupplemented group.

3. Wet caecal-sac weight, dry caecal-contents weight, and faecal and caecal bacterial mass (measured by 2,6-diaminopimelic acid) all increased significantly with the gum-arabic-supplemented diet but not with the wheatbran-supplemented diet.

4. Total short-chain fatty acids (mostly acetate) increased in the caecum and faeces with the gum-arabic-supplemented diet but not with the wheat-bran-supplemented diet.

5. Breath hydrogen and methane production decreased to negligible amounts over the 12 weeks of the experiment.

Type
Clinical and Human Nutrition papers: Studies Relevant to Human Nutrition
Information
British Journal of Nutrition , Volume 60 , Issue 2 , September 1988 , pp. 225 - 232
Copyright
Copyright © The Nutrition Society 1988

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