| Disinfection of selected Aspergillus spp. using ultraviolet germicidal irradiation. | |
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MedLine Citation:
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PMID: 15105889 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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AIMS: The efficacy of ultraviolet germicidal irradiation (UVGI) and the UVGI dose necessary to inactivate fungal spores on an agar surface for cultures of Aspergillus flavus and Aspergillus fumigatus were determined. METHODS AND RESULTS: A four-chambered UVGI testing unit with a 9-W, Phillips, low pressure, mercury UVGI lamp in each chamber was used in this study. An aperture was adjusted to provide 50, 100, 150, and 200 micro W/cm2 of uniform flux to the surfaces of the Petri dish, resulting in a total UVGI dose to the surface of the Petri dishes ranging from 12 to 96 mJ/cm2. The UVGI dose necessary to inactivate 90% of the A. flavus and A. fumigatus was 35 and 54 mJ/cm2, respectively. CONCLUSIONS: UVGI can be used to inactivate culturable fungal spores. Aspergillus flavus was more susceptible than A. fumigatus to UVGI. SIGNIFICANCE AND IMPACT OF THE STUDY: These results may not be directly correlated to the effect of UVGI on airborne fungal spores, but they indicate that current technology may not be efficacious as a supplement to ventilation unless it can provide higher doses of UVGI to kill spores traveling through the irradiated zone. |
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Authors:
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Christopher F Green; Pasquale V Scarpino; Paul Jensen; Nancy J Jensen; Shawn G Gibbs |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Canadian journal of microbiology Volume: 50 ISSN: 0008-4166 ISO Abbreviation: Can. J. Microbiol. Publication Date: 2004 Mar |
Date Detail:
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Created Date: 2004-04-23 Completed Date: 2004-07-27 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0372707 Medline TA: Can J Microbiol Country: Canada |
Other Details:
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Languages: eng Pagination: 221-4 Citation Subset: IM |
Affiliation:
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Department of Civil and Environmental Engineering at the University of Cincinnati, OH 45221-0071, USA. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Aspergillus flavus
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radiation effects* Aspergillus fumigatus / radiation effects* Colony Count, Microbial Disinfection* / instrumentation, methods Dose-Response Relationship, Radiation Spores, Fungal / radiation effects* Ultraviolet Rays* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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