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Influence of soft cheese technology on the growth and enterotoxin production of Staphylococcus aureus

Author

Listed:
  • Lenka Necidová

    (Department of Milk Hygiene and Technology, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences Brno, Brno, Czech Republic)

  • Zora Šťástková

    (Department of Milk Hygiene and Technology, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences Brno, Brno, Czech Republic)

  • Markéta Pospíšilová

    (National Institute of Public Health Prague, Brno, Czech Republic)

  • Bohumíra Janštová

    (Department of Milk Hygiene and Technology, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences Brno, Brno, Czech Republic)

  • Jan Strejček

    (Department of Milk Hygiene and Technology, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences Brno, Brno, Czech Republic)

  • Marta Dušková

    (Department of Milk Hygiene and Technology, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences Brno, Brno, Czech Republic)

  • Renáta Karpíšková

    (Department of Milk Hygiene and Technology, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences Brno, Brno, Czech Republic
    National Institute of Public Health Prague, Brno, Czech Republic)

Abstract

The aim of this study was to monitor S. aureus growth and toxin production in soft cheese during the technological processing. In model experiments, raw milk was inoculated separately with five S. aureus strains isolated from milk and milk products. All the strains were producers of staphylococcal enterotoxins (SEs) of types A, B, or C. SEs were detected by the enzyme-linked fluorescence assay (ELFA) performed in the MiniVIDAS device. This study has shown that the amount of SEs varied with the tested strains and stages of the technological process. SEs were detected in soft cheese made from pasteurised milk inoculated with 2.9 × 105 CFU/g of S. aureus. The prevention of S. aureus contamination and multiplication during the cheese making process is a prerequisite for the production of safe soft cheese. The most important enterotoxin dose build-up factor can be overcome by strict compliance with the cooling requirements during the manufacture, distribution and storage of the product.

Suggested Citation

  • Lenka Necidová & Zora Šťástková & Markéta Pospíšilová & Bohumíra Janštová & Jan Strejček & Marta Dušková & Renáta Karpíšková, 2009. "Influence of soft cheese technology on the growth and enterotoxin production of Staphylococcus aureus," Czech Journal of Food Sciences, Czech Academy of Agricultural Sciences, vol. 27(2), pages 127-133.
    • Handle: RePEc:caa:jnlcjf:v:27:y:2009:i:2:id:131-2008-cjfs
    DOI: 10.17221/131/2008-CJFS
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