Decontamination of a rotating cutting tool during operation by means of atmospheric pressure plasmas

Frank Leipold, Yukihiro Kusano, F. Hansen, T. Jacobsen

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    The decontamination of a rotating cutting tool used for slicing in the meat industry by means of atmospheric pressure plasmas is investigated. The target is Listeria monocytogenes, a bacterium which causes listeriosis and can be found in plants and food. The non-pathogenic species, Listeria innocua, is used for the experiments. A rotating knife was inoculated with L. innocua. The surface of the rotating knife was partly exposed to an atmospheric pressure dielectric barrier discharge operated in air, where the knife itself served as a ground electrode. The rotation of the knife ensures a treatment of the whole cutting tool. A log 5 reduction of L. innocua is obtained after 340 s of plasma operation. The temperature of the knife after treatment was found to be below 30 °C. The design of the setup allows a decontamination during slicing operation.
    Original languageEnglish
    JournalFood Control
    Volume21
    Issue number8
    Pages (from-to)1194-1198
    ISSN0956-7135
    DOIs
    Publication statusPublished - Aug 2010

    Keywords

    • Plasma processing
    • Fusion energy
    • Dielectric barrier discharge (DBD)
    • Listeria
    • Ozone
    • Sterilization

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