Inactivation of Fungal Spores Collected on Fibrous Filters by Melaleuca alternifolia (Tea Tree Oil)

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Title Inactivation of Fungal Spores Collected on Fibrous Filters by Melaleuca alternifolia (Tea Tree Oil)
Author Huang, Ruth; Pyankov, Oleg; Yu, Bofu; Agranovski, Igor E.
Journal Name Aerosol Science and Technology
Year Published 2010
Place of publication United States
Publisher Taylor & Francis Inc.
Abstract Microbial aerosols could cause various human and animal health problems and their control is becoming a significant scientific and technological topic for consideration. Filtration is considered to be one of the main processes of the removal of biological aerosols from the air carrier minimizing bioaerosol concentration in industrial and domestic dwellings. However, with regards to biologically active particles, their removal from the air carrier does not solely solve the problem of microbial contamination of the ambient air. Considering that in some situations bioaerosol particles collected on the filter could re-enter the air carrier, some disinfection is required to ensure that no biologically active particles could possibly be removed from the filter surface and reach human occupied areas. This article describes the results of laboratory investigations involving Melaleuca alternifolia (tea tree oil) as disinfecting media for inactivation of common environmental fungal spores on the filter surface. It was found that 50% and 40% of Aspergillus niger and Rhizopus stolonifer spores, respectively, were inactivated over a period of 60 minutes. A single factor ANOVA test confirmed that the reported rates of inactivation were statistically significant (> 95%). For Rhizopus statistically significant inactivation by 31% was also observed after 30 minutes with no inactivation occurring over shorter time periods. No statistically significant inactivation occurred for Aspergillus niger for any time shorter than 60 min.
Peer Reviewed Yes
Published Yes
Alternative URI http://dx.doi.org/10.1080/02786820903580188
Volume 44
Issue Number 4
Page from 262
Page to 268
ISSN 0278-6826
Date Accessioned 2011-01-17
Date Available 2011-03-29T06:53:19Z
Language en_AU
Research Centre Atmospheric Environment Research Centre
Faculty Faculty of Science, Environment, Engineering and Technology
Subject Chemical Sciences
URI http://hdl.handle.net/10072/37806
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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