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The pyruvate test for monitoring the bacteriological quality of raw silo tank milk

Published online by Cambridge University Press:  01 June 2009

Christina M. Cousins ,
Ubaldina M. Rodrigues  and
Rosemary J. Fulford
Christina M. Cousins
Affiliation:
National Institute for Research in Dairying, Shinfield, Reading, RG2 9AT
Ubaldina M. Rodrigues
Affiliation:
National Institute for Research in Dairying, Shinfield, Reading, RG2 9AT
Rosemary J. Fulford
Affiliation:
National Institute for Research in Dairying, Shinfield, Reading, RG2 9AT
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Summary

Samples of milk from silo tanks were stored at refrigeration temperatures and examined at intervals for pyruvate content and total colony count. Significant relationships between pyruvate, μg/ml, and log colony forming units (cfu)/ml were established for samples stored at 2°C for 2, 3 and 4 d (3, 4 and 5 d of age respectively) but at 5 and 7°C the relationships after 2-d storage (3 d of age) were not significant. From an overall relationship it was predicted that 4 μg pyruvate/ml would correspond to a bacterial content of 3·7 x 106 cfu/ml with 95% confidence limits of 6·6 x 10 cfu/ml. 2·1 x 107 cfu/ml.

Type
Original Articles
Information
Journal of Dairy Research , Volume 48 , Issue 1 , February 1981 , pp. 45 - 50
Copyright
Copyright © Proprietors of Journal of Dairy Research 1981

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References

REFERENCES

Albrecht, J. E. & Tatini, S. R. (1976). Journal of Milk and Food Technology 39, 776–777.CrossRefGoogle Scholar
American Public Health Association (1967). Standard methods for the examination of dairy products, 12th Edn.New York: American Public Health Association Inc.Google Scholar
Arold, W. (1977). Thesis, Ludwig-Maximilians-Universität, Munich.Google Scholar
British Standards Institution (1968). B.S. No. 4285.Google Scholar
Cogan, T. M. (1977). Irish Journal of Food Science and Technology 1, 143–147.Google Scholar
Cousins, C. M., Sharpe, M. E. & Law, B. A. (1977). Dairy Industries International 42(7), 12–17.Google Scholar
Law, B. A., Andrews, A. T. & Sharpe, M. E. (1977). Journal of Dairy Research 44, 145–148.CrossRefGoogle Scholar
Law, B. A., Sharpe, M. E. & Chapman, H. R. (1976). Journal of Dairy Research 43, 459–468.CrossRefGoogle Scholar
Marshall, R. T. & Harmon, C. C. (1978). Journal of Food Protection 41, 168–177.CrossRefGoogle Scholar
Muir, D. D., Kelly, M. E., Phillips, J. D. & Wilson, A. G. (1978). Journal of the Society of Dairy Technology 31, 137–144.CrossRefGoogle Scholar
Pettipher, G. L., Mansell, R., Mckinnon, C. H. & Cousins, C. M. (1980). Applied and Environmental Microbiology 39, 423–429.CrossRefGoogle Scholar
Roberts, A. W. (1979). Journal of the Society of Dairy Technology 32, 24–28.CrossRefGoogle Scholar
Suhren, G., Heeschen, W. & Tolle, A. (1976). Milchwissenschaft 31, 257–260.Google Scholar
Suhren, G., Heeschen, W. & Tolle, A. (1978). Deutsche Molkerei-Zeitung (München) 99, 520–526.Google Scholar
Tolle, A., Heeschen, W. & Mabbitt, L. A. (1976). Information on Agriculture, no. 21. Brussels: Commission of the European Communities.Google Scholar
Tolle, A., Heeschen, W., Wernery, H., Reichmuth, J. & Suhren, G. (1972). Milchwissenschaft 27, 343–352.Google Scholar
Zandstra, T. & De Vries, Tj. (1977). Netherlands Milk and Dairy Journal 31, 109–119.Google Scholar