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Radiation-resistant micro-organisms isolated from textiles

H Kristensen, E A Christensen

    Acta Pathologica Et Microbiologica Scandinavica. Section B, Microbiology
    |October 1, 1981
    PubMed
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    Radiation-resistant bacteria, including Micrococcus radiodurans, were identified on textiles from homes and labs. These microbes exhibit significant resistance to radiation, with potential implications for sterilization processes.

    Area of Science:

    • Microbiology
    • Radiation Biology
    • Environmental Science

    Background:

    • Textiles in domestic and professional settings can harbor microorganisms.
    • Understanding microbial resistance to radiation is crucial for sterilization and public health.

    Purpose of the Study:

    • To investigate the presence and radiation resistance of bacteria and fungi on contaminated textiles.
    • To compare different isolation methods for selecting radiation-resistant microorganisms.

    Main Methods:

    • Isolation of radiation-resistant organisms from towels and underwear using three distinct methods.
    • Exposure of isolated strains to varying radiation doses to determine resistance levels (D-values).

    Main Results:

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  • 44 different microbial strains were isolated, with no significant difference between the three isolation methods.
  • Pigment-producing Gram-positive cocci, identified as Micrococcus radiodurans, were the most radiation-resistant strains.
  • D-values ranged from 1.5 megarad (Candida parapsilosis) to 5.7 megarad (M. radiodurans).

    • Conclusions:

    • Micrococcus radiodurans demonstrates exceptional radiation resistance, found on everyday textiles.
    • The study provides data on microbial radiation resistance relevant to sterilization validation and environmental microbiology.