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The fate of a toxigenic strain of Staphylococcus aureus in vacuum-packaged bacon

Published online by Cambridge University Press:  15 May 2009

J. F. Dempster
Affiliation:
Dunsinea Research Centre, An Foras Taluntais, Castleknoct, Co. Dublin, Ireland
W. R. Kelly
Affiliation:
Faculty of Veterinary Medicine, University College, Dublin
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Summary

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Pork was cured by (a) the Wiltshire method and (b) a hygienic sweet cure process. Representative samples of both bacons were inoculated at ‘low’ density (103 organisms/g.) and ‘high’ density (106 organisms/g.) with a toxin-producing strain of Staphylococcus aureus, ‘High’ and ‘low’ density samples of both bacons were each stored at 5° C. for 42 days and 15° C. for 21 days.

Results indicated that the test organism at high inoculum density grew slowly in both bacons at 5° C. The organism survived at 5° C. in both ‘low density’ bacons. At 15° C. the test organism grew; growth being more pronounced in the ‘hygienic’ than in Wiltshire bacon.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1973

References

REFERENCES

Angelotti, R., Foter, M. J. & Lewis, K. H. (1961). Time-temperature effects on Salmon-ellae and Staphylococci in foods. III. Thermal death time studies. Applied Microbiology 9, 308.CrossRefGoogle ScholarPubMed
Baird-Parker, A. C. (1962). An improved diagnostic and selective medium for isolating coagulase-positive Staphylococci. Journal of Applied Bacteriology 25 (1), 12.CrossRefGoogle Scholar
Bardsley, A. J. & Taylor McM, A. (1960). Survival of some food poisoning organisms in vacuum-packaged bacon. British Food Manufacturing Industries Research Association. Research Report, no. 99.Google Scholar
Bryan, F. L. (1968). What the sanitarian should known about Staphylococci and Salmon-ellae in non-dairy products. I. Staphylococci. Journal of Milk and Food Technology 31 (4), 10.CrossRefGoogle Scholar
Buttiaux, R. & Moriamez, J. (1958). Le comportement des germes tests de contamination fécale dans les saumures de viandes. Proceedings of 2nd International Symposium on Food Microbiology, p. 247. London: H.M.S.O.Google Scholar
Castellani, A. G. & Niven C, F. JR. (1955). Factors affecting the bacteriostatic action of sodium nitrite. Applied Microbiology 3, 154.CrossRefGoogle ScholarPubMed
Chapman, G. H. (1945). The significance of NaCl in studies of Staphylococci. Journal of Bacteriology 50, 201.Google Scholar
Chapman, G. H. (1946). A single culture medium for selective isolation of plasma-coagulating Staphylococci and for improved testing of chromogenesis, plasma coagulation, mannitol fermentation and the ‘Stone’ reaction. Journal of Bacteriology 51, 409.Google Scholar
Christiansen, L. N. & Foster, E. M. (1965). Effect of vacuum packaging on growth of Clostridium botulinum and Staphylococcus aureus in cured meats. Applied Microbiology 13, 1023.Google Scholar
Dempster, J. F. (1972). Vacuum-packaged bacon; the effect of processing and storage temperature on shelf life. Journal of Food Technology 7 (3), 271.CrossRefGoogle Scholar
Di Giacinto, J. V. & Frazier, W. C. (1966). Effect of Coliform and Proteus bacteria on growth of Staphylococcus aureus. Applied Microbiology 8, 124.CrossRefGoogle Scholar
Eddy, B. P. & Ingram, M. (1962). The occurrence and growth of Staphylococci on packed bacon with special reference to Staphylococcus aureus. Journal of Applied Bacteriology 25, 237.CrossRefGoogle Scholar
Follet, M. J. & Ratcliff, P. W. (1963). Determination of nitrite and nitrate in meat products. Journal of the Science of Food and Agriculture 14, 138.CrossRefGoogle Scholar
Ginsberg, A. (1945). The action of three different bacon brines on pathogenic bacteria. Veterinary Journal 101, 123.Google Scholar
Graves, R. R. & Frazier, W. C. (1963). Food microorganisms influencing the growth of Staphylococcus aureus. Applied Microbiology 11, 513.Google Scholar
Hansen, N. H. & Riemann, H. (1962). Prepacked meats; microbiological conditions. Danish Meat Research Institute, publication no. 166E.Google Scholar
Ingram, M. (1960). Bacterial multiplication in packed Wiltshire bacon. Journal of Applied Bacteriology 23, 206.Google Scholar
Ingram, M. (1962). Microbiological principles in prepackaging meats. Journal of Applied Bacteriology 25, 259.Google Scholar
Kitchell, A. G. & Ingram, M. (1963). Vacuum-packed sliced Wiltshire bacon. Food Processing and Packaging 32, 2.Google Scholar
Lechowich, R. V., Evans, J. B. & Niven, C. F. Jr. (1956). Effect of curing ingredients and procedures on the survival and growth of Staphylococci in and on cured meats. Applied Microbiology 4, 360.CrossRefGoogle Scholar
McCoy, D. W. & Faber, J. E. (1966). Influence of food microorganisms on Staphylococcal growth and enterotoxin production in meat. Applied Microbiology 14, 372.CrossRefGoogle ScholarPubMed
Miles, A. A., Williams, R. E. O. & Clayton-Cooper, B. (1944). The carriage of Staphylococcus (pyogenes) aureus in man and its relation to wound infection. Journal of Pathology and Bacteriology 56, 513.Google Scholar
Oberhofer, T. R. & Frazier, W. C. (1961). Competition of Staphylococcus aureus with other organisms. Journal of Milk and Food Technology 24, 172.Google Scholar
Peterson, A. C., Black, J. J. & Gunderson, M. F. (1962). Staphylococci in competition. II. Effect of total numbers and proportion of Staphylococci in mixed cultures on growth in artificial culture media. Applied Microbiology 10, 23.Google Scholar
Ravenholt, R. T., Eelkema, R. C., Mulhern, M. & Watkins, R. B. (1961). Staphylococcal infection in meat animals and meat workers. Public Health Reports 76 (10), 879.CrossRefGoogle ScholarPubMed
Tarr, H. L. A. (1941). The action of nitrites on bacteria. Journal of the Fisheries Research Board, Canada 5, 265.CrossRefGoogle Scholar
Tarr, H. L. A. (1942). The action of nitrites on bacteria; further experiments. Journal of the Fisheries Research Board, Canada 6, 74.CrossRefGoogle Scholar
Thatcher, F. S., Robinson, J. & Ergman, I. (1962). The vacuum pack method of packaging food in relation to the formation of the botulinum and staphylococal toxins. Journal of Applied Bacteriology 25, 120.Google Scholar
Vogel, A. I. (1948). Quantitative Inorganic Analysis. London: Longmans, Green.Google Scholar
Wilson, G. S. & Miles, A. A. (1964). Topley and Wilson's Principles of Bacteriology and Immunity, 5th ed.London: Arnold.Google Scholar