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  • Microbial decontamination of chicken using atmospheric plasma bubbles

    Author(s)
    Mai-Prochnow, Anne
    Alam, David
    Zhou, Renwu
    Zhang, Tianqi
    Ostrikov, Kostya Ken
    Cullen, Patrick J
    Griffith University Author(s)
    Ostrikov, Ken
    Year published
    2020
    Metadata
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    Abstract
    In this study, we demonstrate that atmospheric air plasma bubbles are an effective, energy-efficient, residue-free alternative to current decontamination techniques. Five to fifteen minutes of plasma-bubble treatments of inoculated chicken skin led to a significant reduction in colony-forming units (CFUs). We show that the activation efficiency is dependent on the plasma discharge frequency, with a higher one (2,000 Hz) leading to a higher CFU reduction (1.4 log) as compared with a lower (0.3 log) reduction at 1,000 Hz. Scanning electron microscopy pictures of treated bacteria reveal damage to the cells. An evaluation of the ...
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    In this study, we demonstrate that atmospheric air plasma bubbles are an effective, energy-efficient, residue-free alternative to current decontamination techniques. Five to fifteen minutes of plasma-bubble treatments of inoculated chicken skin led to a significant reduction in colony-forming units (CFUs). We show that the activation efficiency is dependent on the plasma discharge frequency, with a higher one (2,000 Hz) leading to a higher CFU reduction (1.4 log) as compared with a lower (0.3 log) reduction at 1,000 Hz. Scanning electron microscopy pictures of treated bacteria reveal damage to the cells. An evaluation of the physicochemical properties of the generated plasma-activated water revealed an increase in conductivity and in ozone, nitrite, nitrate, hydroxyl, and peroxide concentrations with higher frequencies, all contributing to the observed antimicrobial effect.
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    Journal Title
    Plasma Processes and Polymers
    DOI
    https://doi.org/10.1002/ppap.202000052
    Note
    This publication has been entered as an advanced online version in Griffith Research Online.
    Subject
    Atomic, molecular and optical physics
    Nuclear and plasma physics
    Particle and high energy physics
    Physical chemistry
    Materials engineering
    Science & Technology
    Physical Sciences
    Physics, Applied
    Physics, Fluids & Plasmas
    Physics, Condensed Matter
    Publication URI
    http://hdl.handle.net/10072/400264
    Collection
    • Journal articles

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