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    A quantitative method for evaluating the photoreactivation of ultraviolet damaged microorganisms.

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    Publication date
    2002
    Author
    Beggs, Clive B.
    Keyword
    Ultaviolet light
    UV light
    Photolysis
    Micro-organisms
    Microorganisms
    Photoreaction
    Peer-Reviewed
    Yes
    
    Metadata
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    Abstract
    The lethal effect of ultraviolet (UV) light on microorganisms is well known and many studies have been undertaken into the effects of UV induced damage. Most of this work has been experimental; by comparison relatively little theoretical work has been undertaken to analyse the kinetics of the UV inactivation process, or to develop quantitative methodologies to support the experimental work. This paper presents a new and simple model for quantifying the photolysis rate. A theoretical study is also presented in this paper which quantifies photolysis rates for E. coli O26 and E. coli O157:H7. This study uses experimental data collected by Tosa and Hirata, and reveals the photolysis rate for E. coil O26 during the UV irradiation process to be 4.69 x 10(-3) m2 J(-1). By comparison, E. coli O157:H7 is much more susceptible to UV induced damage than E. coli O26, having a photolysis constant of only 2.09 x 10(-3) m2 J(-1).
    URI
    http://hdl.handle.net/10454/3772
    Version
    No full-text available in the repository
    Citation
    Beggs, C. (2002). A quantitative method for evaluating the photoreactivation of ultraviolet damaged microorganisms. Photochemical and Photobiological Sciences. Vol. 1, No. 6, pp. 431-437.
    Link to publisher’s version
    http://dx.doi.org/10.1039/b202801h
    Type
    Article
    Collections
    Engineering and Informatics Publications

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