Formaldehyde gas inactivation of Bacillus anthracis , Bacillus subtilis , and Geobacillus stearothermophilus spores on indoor surface materials

Formaldehyde gas inactivation of Bacillus anthracis , Bacillus subtilis , and Geobacillus... Aims: To evaluate the decontamination of Bacillus anthracis, Bacillus subtilis, and Geobacillus stearothermophilus spores on indoor surface materials using formaldehyde gas. Methods and Results: B. anthracis, B. subtilis, and G. stearothermophilus spores were dried on seven types of indoor surfaces and exposed to approx. 1100 ppm formaldehyde gas for 10 h. Formaldehyde exposure significantly decreased viable B. anthracis, B. subtilis, and G. stearothermophilus spores on all test materials. Significant differences were observed when comparing the reduction in viable spores of B. anthracis with B. subtilis (galvanized metal and painted wallboard paper) and G. stearothermophilus (industrial carpet and painted wallboard paper). Formaldehyde gas inactivated ≥50% of the biological indicators and spore strips (approx. 1 × 106 CFU) when analyzed after 1 and 7 days. Conclusions: Formaldehyde gas significantly reduced the number of viable spores on both porous and nonporous materials in which the two surrogates exhibited similar log reductions to that of B. anthracis on most test materials. Significance and Impact of the Study: These results provide new comparative information for the decontamination of B. anthracis spores with surrogates on indoor surfaces using formaldehyde gas. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Applied Microbiology Wiley

Formaldehyde gas inactivation of Bacillus anthracis , Bacillus subtilis , and Geobacillus stearothermophilus spores on indoor surface materials

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Publisher
Wiley
Copyright
Copyright © 2007 Wiley Subscription Services, Inc., A Wiley Company
ISSN
1364-5072
eISSN
1365-2672
D.O.I.
10.1111/j.1365-2672.2007.03332.x
Publisher site
See Article on Publisher Site

Abstract

Aims: To evaluate the decontamination of Bacillus anthracis, Bacillus subtilis, and Geobacillus stearothermophilus spores on indoor surface materials using formaldehyde gas. Methods and Results: B. anthracis, B. subtilis, and G. stearothermophilus spores were dried on seven types of indoor surfaces and exposed to approx. 1100 ppm formaldehyde gas for 10 h. Formaldehyde exposure significantly decreased viable B. anthracis, B. subtilis, and G. stearothermophilus spores on all test materials. Significant differences were observed when comparing the reduction in viable spores of B. anthracis with B. subtilis (galvanized metal and painted wallboard paper) and G. stearothermophilus (industrial carpet and painted wallboard paper). Formaldehyde gas inactivated ≥50% of the biological indicators and spore strips (approx. 1 × 106 CFU) when analyzed after 1 and 7 days. Conclusions: Formaldehyde gas significantly reduced the number of viable spores on both porous and nonporous materials in which the two surrogates exhibited similar log reductions to that of B. anthracis on most test materials. Significance and Impact of the Study: These results provide new comparative information for the decontamination of B. anthracis spores with surrogates on indoor surfaces using formaldehyde gas.

Journal

Journal of Applied MicrobiologyWiley

Published: Oct 1, 2007

References

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