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The effect of dietary protein source and guar gum on gastrointestinal growth and enteroglucagon secretion in the rat

Published online by Cambridge University Press:  09 March 2007

Susan Southon ,
Jennifer M. Gee  and
I. T. Johnson
Susan Southon
Affiliation:
AFRC Institute of Food Research, Norwich Laboratory, Colney Lane, Norwich NR4 7UA
Jennifer M. Gee
Affiliation:
AFRC Institute of Food Research, Norwich Laboratory, Colney Lane, Norwich NR4 7UA
I. T. Johnson
Affiliation:
AFRC Institute of Food Research, Norwich Laboratory, Colney Lane, Norwich NR4 7UA
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Abstract

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1. Male Wistar rats (approximately 100 g) were given fibre-free semi-synthetic diets containing either casein or albumin (168 g/kg diet) as the protein source with or without guar gum (75 g/kg diet) (casein, albumin, casein- guar gum and albumin-guar gum groups).

2. Small intestinal length, weights of caecal tissue and contents and plasma enteroglucagon concentration were significantly increased in guar-gum-fed animals compared with the fibre-free groups.

3. Total caecal weight and plasma enteroglucagon concentration were higher in the albumin-guar gum group compared with the casein-guar gum group. The weights of caecal tissue and contents were significantly increased in rats given the fibre-free albumin diet compared with those consuming a similar diet with casein as the protein source, although daily food intake tended to be lower.

4. It is concluded that the effect of materials classed as dietary fibre may be significantly influenced by the non- polysaccharide component of the diet, and that such interactions may influence both the growth and endocrine activity of the gastrointestinal tract.

Type
Clinical and Human Nutrition papers
Information
British Journal of Nutrition , Volume 58 , Issue 1 , July 1987 , pp. 65 - 72
Copyright
Copyright © The Nutrition Society 1987

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