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  • Title: Comparison of UV inactivation of spores of three encephalitozoon species with that of spores of two DNA repair-deficient Bacillus subtilis biodosimetry strains.
    Author: Marshall MM, Hayes S, Moffett J, Sterling CR, Nicholson WL.
    Journal: Appl Environ Microbiol; 2003 Jan; 69(1):683-5. PubMed ID: 12514061.
    Abstract:
    When exposed to 254-nm UV, spores of Encephalitozoon intestinalis, Encephalitozoon cuniculi, and Encephalitozoon hellem exhibited 3.2-log reductions in viability at UV fluences of 60, 140, and 190 J/m(2), respectively, and demonstrated UV inactivation kinetics similar to those observed for endospores of DNA repair-defective mutant Bacillus subtilis strains used as biodosimetry surrogates. The results indicate that spores of Encephalitozoon spp. are readily inactivated at low UV fluences and that spores of UV-sensitive B. subtilis strains can be useful surrogates in evaluating UV reactor performance.
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