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Composition of faeces from human subjects consuming diets based on conventional foods containing different kinds and amounts of dietary fibre

Published online by Cambridge University Press:  09 March 2007

Elisabet Forsum ,
Cecilia Eriksson ,
Helen Göranzon  and
Annica Sohlström
Elisabet Forsum
Affiliation:
Department of Medical Nutrition, Huddinge Hospital, F69, Karolinska Institute, S-141 86 Huddinge, Sweden
Cecilia Eriksson
Affiliation:
Institute of Nutrition, University of Uppsala, Box 551, S-751 22 Uppsala, Sweden
Helen Göranzon
Affiliation:
Institute of Nutrition, University of Uppsala, Box 551, S-751 22 Uppsala, Sweden
Annica Sohlström
Affiliation:
Department of Medical Nutrition, Huddinge Hospital, F69, Karolinska Institute, S-141 86 Huddinge, Sweden
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Abstract

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The stool-bulking effect of dietary fibre (DF) is well-documented and believed to be important in the postulated beneficial effect of DF on human health. The aim of the present study was to investigate the digestibility of DF in relation to its stool-bulking properties and to study possible mechanisms for this effect. Four diets, based on conventional foods only, were studied in balance experiments on human subjects. Diet A contained DF mainly from whole-grain cereals while diets B1 and B2 contained DF mainly from pulses, vegetables and fruit. Diet C was a low-fibre diet. Faeces was fractionated into four fractions, each enriched in one of the following three components: undigested DF (fractions 1 + 2), faecal bacteria (fraction 3) and soluble components (fraction 4). The digestibility of DF in diets A, B1 and B2 was 0.62, 0.88 and 0.90 respectively. Subjects consuming diet A excreted slightly more fraction 3 than subjects consuming the other diets. Thus, the statement that DF of high digestibility stimulates microbial growth in the gut was not supported. The water-holding capacity of fraction 1 was studied in vitro and was found to be low. It is suggested that undigested soluble DF is important in the stool-bulking properties of DF.

Keywords

BacteriaDietary fibreFaecal composition
Type
Dietary Fibre
Information
British Journal of Nutrition , Volume 64 , Issue 1 , July 1990 , pp. 171 - 186
Copyright
Copyright © The Nutrition Society 1990

References

Åman, P. & Hesselman, K. (1984). Analysis of starch and other main constituents of cereal grains. Swedish Journal of Agricultural Research 14, 135–139.Google Scholar
Amtsblatt der Europäischen Gemeinschaften (1971). Bestimmung von Rohfett. L.279/17.Google Scholar
Armitage, P. (1971). Statistical Methods in Medical Research, pp. 118–121, 150–163, 187–207, 398. New York: Halsted Press, John Wiley & Sons. Inc.Google Scholar
Burkitt, D. P. & Trowell, H. C. (1975). Refined Carbohydrate Foods and Disease. Some Implications of Dietary Fibre. London: Academic Press.Google Scholar
Candlish, J. K., Gourley, L. & Lee, H. P. (1987). Dietary fiber and starch in some Southeast Asian fruits. Journal of Food Composition and Analysis 1, 81–84.CrossRefGoogle Scholar
Cummings, J. H. (1982). Consequences of the metabolism of fiber in the human large intestine. In Dietary Fibre in Health and Disease, pp. 9–22 [Vahouny, G. V. and Kritchevsky, D., editors]. New York: Plenum Press.CrossRefGoogle Scholar
Cummings, J. H. (1983). Fermentation in the human large intestine: evidence and implications for health. Lancet i, 1206–1209.CrossRefGoogle Scholar
Drasar, B. S., Jenkins, D. J. A. & Cummings, J. H. (1976). The influence of a diet rich in wheat fibre on the human faecal flora. Journal of Medical Microbiology 9, 423–431.CrossRefGoogle Scholar
Dreher, M. L. (1987). Handbook of Dietary Fiber. An Applied Approach, p. 45. New York: Marcel Dekker Inc.Google Scholar
Durrington, P. N., Manning, A. P., Bolton, C. H. & Hartog, M. (1976). Effect of pectin on serum lipids and lipoprotein, whole-gut transit-time, and stool weight. Lancet ii, 394–395.CrossRefGoogle Scholar
Englyst, H., Wiggins, H. S. & Cummings, J. H. (1982). Determination of the non-starch polysaccharides in plant foods by gas-liquid-chromatography. Analyst 107, 307–318.CrossRefGoogle ScholarPubMed
Finegold, S. M., Sutter, V. L. & Mathisen, G. E. (1983). Normal indigenous intestinal flora. In Human Intestinal Microflora in Health and Disease, pp. 3–31 [Hentges, D. J., editor]. New York: Academic Press.CrossRefGoogle Scholar
Göranzon, H. & Forsum, E. (1987). Metabolizable energy in humans in two diets containing different sources of dietary fiber. Calculations and analysis. Journal of Nutrition 117, 267–273.CrossRefGoogle ScholarPubMed
Henninger, G. (1979). Enzymatische Lebensmittelanalytik. Zeitschrift fur Lebensmitteltechnologie and Ver- fahrenstechnik 30, 137–144, 182–185.Google Scholar
Kelsay, J. L. (1978). A review of research on effects of fiber intake on man. American Journal of Clinical Nutrition 31, 142–159.CrossRefGoogle ScholarPubMed
Kronvall, G. & Myhre, E. (1977). Differential staining of bacteria in clinical specimens using acridine orange buffered at low pH. Acta Pathologica et Microbiologica Scandinavica 85, 249–254.Google ScholarPubMed
National Food Administration. (1978). Livsmedelstabeller. Stockholm: Liber Tryck.Google Scholar
Official Swedish Agricultural Methods of Analyses (1966). Kungliga Lantbruksstyrelsens Kungrörelse. Stockholm: Svenska Reproduktionscentralen AB no 15.Google Scholar
Southgate, D. A. T, Bailey, B., Collinson, E. & Walker, A. F. (1976). A guide to calculating intakes of dietary fiber. Journal of Human Nutrition 30, 303–313.Google Scholar
Stephen, A. M. & Cummings, J. H. (1979). Water-holding by dietary fibre in vitro and its relationship to faecal output in man. Gut 20, 722–729.CrossRefGoogle ScholarPubMed
Stephen, A. M. & Cummings, J. H. (1980 a). Mechanism of action of dietary fibre in the human colon. Nature 284, 283–284.CrossRefGoogle ScholarPubMed
Stephen, A. M. & Cummings, J. H. (1980 b). The microbial contribution to human faecal mass. Journal of Medical Microbiology 13, 45–55.CrossRefGoogle ScholarPubMed
Theander, O. & Westerlund, E. (1986). Studies on dietary fiber. 3. Improved procedures for analysis of dietary fiber. Journal of Agricultural and Food Chemistry 34, 330–336.CrossRefGoogle Scholar
Van Soest, P. J. & Wine, R. H. (1967). Use of detergents in the analysis of fibrous feeds. IV. Determination of plant cell-wall constituents. Journal of the Association of Official Analytical Chemists 50, 50–55.Google Scholar