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The biological effects and digestible energy value of a sugar-beet fibre preparation in the rat

Published online by Cambridge University Press:  09 March 2007

I. T. Johnson ,
G. Livesey ,
J. M. Gee ,
J. C. Brown  and
G. M. Wortley
I. T. Johnson
Affiliation:
Department of Nutrition and Food Quality, Institute of Food Research, Norwich Laboratory, Colney Lane, Norwich NR4 7UA
G. Livesey
Affiliation:
Department of Nutrition and Food Quality, Institute of Food Research, Norwich Laboratory, Colney Lane, Norwich NR4 7UA
J. M. Gee
Affiliation:
Department of Nutrition and Food Quality, Institute of Food Research, Norwich Laboratory, Colney Lane, Norwich NR4 7UA
J. C. Brown
Affiliation:
Department of Nutrition and Food Quality, Institute of Food Research, Norwich Laboratory, Colney Lane, Norwich NR4 7UA
G. M. Wortley
Affiliation:
Department of Nutrition and Food Quality, Institute of Food Research, Norwich Laboratory, Colney Lane, Norwich NR4 7UA
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Abstract

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A sugar-beet fibre preparation (SBF) was incorporated into a semi-synthetic rat diet at a level of 100 g/kg. The material caused no feed aversion, and gain of live weight was unimpaired. SBF appeared to be slightly more fermentable than wheat bran and only marginally less effective as a faecal bulking agent when compared with equalized intakes of non-starch polysaccharide. SBF did not stimulate mucosal cell turnover in the small intestine. Some enlargement of the caecum was observed in animals given SBF, but it was no greater than that of animals given wheat bran. Animals given SBF had a lower serum cholesterol concentration than both the fibre-free controls and those given wheat bran. This hypocholesterolaemic effect was less than that of guar gum however. The partial digestibility of energy for SBF was 0.64, and its partial digestible energy value was 11.3 kJ (2.7 keal)/g. The partial digestibility of energy for non-starch polysaccharide in SBF was estimated to be 0.53 and its partial digestible energy value was 9.1 kJ (2.2 kcal)/g. This value was not significantly different from that expected for unavailable carbohydrate in mixed human diets.

Keywords

Sugar-beet fibreDietary fibreDigestible energyRat
Type
Dietary Fibre
Information
British Journal of Nutrition , Volume 64 , Issue 1 , July 1990 , pp. 187 - 199
Copyright
Copyright © The Nutrition Society 1990

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