IDEAS home Printed from https://ideas.repec.org/a/caa/jnlcjf/v27y2009i2id1052-cjfs.html
   My bibliography  Save this article

High pressure inactivation of Enterococcus faecium - modelling and verification

Author

Listed:
  • Aleš Landfeld

    (Food Research Institute Prague, Prague, Czech Republic)

  • Jan Strohalm

    (Food Research Institute Prague, Prague, Czech Republic)

  • Karel Kýhos

    (Food Research Institute Prague, Prague, Czech Republic)

  • Jiřina Průchová

    (Food Research Institute Prague, Prague, Czech Republic)

  • Milan Houška

    (Food Research Institute Prague, Prague, Czech Republic)

  • Pavla Novotná

    (Food Research Institute Prague, Prague, Czech Republic)

  • Ljuba Schlemmerová

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

  • Hana Šmuhařová

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

  • Vladimir Špelina

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

  • Pavel Čermák

    (University Hospital Hradec Kralove, Hradec Kralové, Czech Republic)

  • Kveta Pavlišová

    (University Hospital Hradec Kralove, Hradec Kralové, Czech Republic)

  • Pavel Měřicka

    (University Hospital Hradec Kralove, Hradec Kralové, Czech Republic)

Abstract

High-pressure inactivation data were obtained for model working suspensions of Enterococcus faecium in saline solutions in pH range from 5.5 to 6.8, at water activity 0.99 (corresponding to the saline solution). The data were predicted for the pressure range of 450 MPa to 550 MPa, at the initial model suspension temperature 6-7°C prior to pressurising. The results indicate that E. faecium is a highly resistant organism under physiological pH values. With decreasing the substrate pH, the tolerance to the inactivation effects of high pressure decreased. The high-pressure inactivation proved ineffective for the above organism in the range of physiological pH values. The values for high-pressure inactivation model were specified and the calculated parameters of high-pressure inactivation were compared to the experimental data for the working suspensions of E. faecium in cow and human milks. As to cow milk, the predicted data showed some deviation from the model experimental results, while with human milk the model failed completely. High-pressure inactivation of E. faecium in human milk proved to be significantly more effective than that predicted by a model based on the saline solution.

Suggested Citation

  • Aleš Landfeld & Jan Strohalm & Karel Kýhos & Jiřina Průchová & Milan Houška & Pavla Novotná & Ljuba Schlemmerová & Hana Šmuhařová & Vladimir Špelina & Pavel Čermák & Kveta Pavlišová & Pavel Měřicka, 2009. "High pressure inactivation of Enterococcus faecium - modelling and verification," Czech Journal of Food Sciences, Czech Academy of Agricultural Sciences, vol. 27(2), pages 134-141.
    • Handle: RePEc:caa:jnlcjf:v:27:y:2009:i:2:id:1052-cjfs
    DOI: 10.17221/1052-CJFS
    as

    Download full text from publisher

    File URL: http://cjfs.agriculturejournals.cz/doi/10.17221/1052-CJFS.html
    Download Restriction: free of charge
    File URL: http://cjfs.agriculturejournals.cz/doi/10.17221/1052-CJFS.pdf
    Download Restriction: free of charge
    File URL: https://libkey.io/10.17221/1052-CJFS?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    References listed on IDEAS

    as
    1. Vladimiír Špelina & Ljuba Schlemmerová & Aleš Landfeld & Karel Kýhos & Pavel Měřička & Milan Houška, 2007. "Thermal inactivation of Enterococcus faecium," Czech Journal of Food Sciences, Czech Academy of Agricultural Sciences, vol. 25(5), pages 283-290.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Pavel Čermák & Aleš Landfeld & Pavel Měřička & Milan Houška, 2009. "Enterococcus faecium growth model," Czech Journal of Food Sciences, Czech Academy of Agricultural Sciences, vol. 27(5), pages 361-371.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:caa:jnlcjf:v:27:y:2009:i:2:id:1052-cjfs. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Ivo Andrle (email available below). General contact details of provider: https://www.cazv.cz/en/home/ .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.