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The influence of dietary tea, coffee and cocoa on protein and energy utilization of soya-bean meal and barley in rats

Published online by Cambridge University Press:  09 March 2007

B. O. Eggum ,
Birthe Pedersen  and
Ingeborg Jacobsen
B. O. Eggum
Affiliation:
National Institute of Animal Science, Department of Animal Physiology and Chemistry, Rolighedsvej 25, DK-1958 Copenhagen, Denmark
Birthe Pedersen
Affiliation:
National Institute of Animal Science, Department of Animal Physiology and Chemistry, Rolighedsvej 25, DK-1958 Copenhagen, Denmark
Ingeborg Jacobsen
Affiliation:
National Institute of Animal Science, Department of Animal Physiology and Chemistry, Rolighedsvej 25, DK-1958 Copenhagen, Denmark
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Abstract

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1. Two series of balance experiments were performed with growing rats to test the effect of black tea, green tea, coffee and cocoa on protein and energy utilization. In Expt 1 soya-bean meal was fed as a basal diet and supplemented with freeze-dried materials from 11 black tea, green tea or coffee/500 g dry matter. Cocoa powder, corresponding to 11 of the beverage, was also added to the basal diet. In Expt 2 the procedure was repeated with a barley-based diet.

2. In both experiments both tea varieties and coffee had significantly negative effects on true protein digestibility and biological value, while digestible energy was only slightly affected in the barley-based diet. Cocoa had no effect on protein or energy utilization in either soya-bean meal or barley diets, although the protein in cocoa powder was completely indigestible.

3. As the tannin concentration in both tea varieties and coffee was very high it is assumed that the observed deleterious effects might, in part, be explained by anti-nutritional effects of tannin.

4. The strongest deleterious effect was recorded for black tea.

Type
Papers of direct relevance to Clinical and Human Nutrition
Information
British Journal of Nutrition , Volume 50 , Issue 2 , September 1983 , pp. 197 - 205
Copyright
Copyright © The Nutrition Society 1983

References

REFERENCES

Association of Official Agricultural Chemists (1975). Official Methods of Analysis. Washington DC: Association of Official Agricultural Chemists.Google Scholar
Booth, A. N., Robbins, D. J. & DeEds, F. (1961). Journal of Nutrition 75, 104–106.CrossRefGoogle Scholar
Brown, P. J. & Wright, W. B. (1963). Journal of Chromatography 11, 504–514.CrossRefGoogle Scholar
Das, D. N., Ghosh, J. J. & Guha, B. (1964). Indian Journal of Applied Chemistry 27, 6–10.Google Scholar
Derman, D., Sayers, M., Lynch, S. R., Charlton, R. W. & Bothwell, T. H. (1977). British Journal of Nutrition 38, 261–269.CrossRefGoogle Scholar
Eggum, B. O. (1973). A study of certain factors influencing protein utilization in rats and pigs. Beretning fra Forsøgslaboratonèt, no. 406.Google Scholar
Eggum, B. O. & Christensen, K. D. (1975). Breeding for Seed Protein Improvement Using Nuclear Techniques, 229 pp. Vienna: International Atomic Energy Agency.Google Scholar
Fenwick, R. G. & Hoggan, S. A. (1976). British Poultry Science 17, 59–62.CrossRefGoogle Scholar
Fuller, H. L., Chang, S. I. & Potter, D. K. (1967). Journal of Nutrition 91, 477–481.CrossRefGoogle Scholar
Gill, J. L. (1978). Design and Analyses of Experiments in the Animal and Medical Sciences, vol. 1, 409 pp. Iowa: Iowa State University Press.Google Scholar
Hessling, P. B., Klopper, J. F. & Van Heerden, P. D. R. (1979). South African Medical Journal 55, 631–632.Google Scholar
McCance, R. A. & Widdowson, E. M. (1960). The Composition of Foods (MRC Special Reports Series No. 297). London: HM Stationery Office.Google Scholar
Mason, V. C., Bech-Andersen, S. & Rudemo, M. (1980). Zeitschrift für Tierphysiologie, Tierernährung und Futtermittelkunde 43, 146–164.CrossRefGoogle Scholar
Naismith, D. J., Akinyanju, P. A. & Yudkin, J. (1969). Journal of Nutrition 97, 375–381.CrossRefGoogle Scholar
Potter, D. K. & Fuller, J. L. (1968). Journal of Nutrition 96, 187–191.CrossRefGoogle Scholar
Rossander, L., Hallberg, L. & Bjørn-Rasmussen, E. (1979). American Journal of Clinical Nutrition 32, 2484–2489.CrossRefGoogle Scholar
Sibbald, I. R. (1982). Nutrition Reports International 25, 133–137.Google Scholar
Stagg, G. V. & Millin, J. (1975). Journal of the Science of Food and Agriculture 26, 1439–1459.CrossRefGoogle Scholar
Swain, T. (1965). The Tannins in Plant Biochemistry, 552 pp. [Bonner, J. and Varner, E. V., editors]. New York: Academic Press.CrossRefGoogle Scholar
Weidner, K. & Jakobsen, P. E. (1962). In Øvelsesvejledning for Landbrugs-, Mejeribrugs- og Licentiatstuderende [Forlag, D. S. R., editor]. Copenhagen, Denmark: Royal Veterinary and Agricultural University.Google Scholar
Williams, R. T. (1959). Detoxification Mechanisms, 2nd ed. New York: Wiley.Google Scholar