This content is not included in your SAE MOBILUS subscription, or you are not logged in.

ATCC 29669 Spores Show Substantial Dry Heat Survivability

Journal Article
2008-01-1982
ISSN: 1946-3855, e-ISSN: 1946-3901
Published June 29, 2008 by SAE International in United States
ATCC 29669 Spores Show Substantial Dry Heat Survivability
Sector:
Citation: Schubert, W. and Beaudet, R., "ATCC 29669 Spores Show Substantial Dry Heat Survivability," SAE Int. J. Aerosp. 1(1):40-46, 2009, https://doi.org/10.4271/2008-01-1982.
Language: English

Abstract:

Bacillus sp. ATCC 29669 was isolated from microbial fallout in clean rooms during the assembly of the Viking Spacecraft missions to Mars, making it a potential contamination concern for outbound space missions. Spores from this bacterial strain were found to be thirty times more resistant to dry heat than B. atrophaeus. Spore inactivation rates under vacuum controlled humidity were faster than rates obtained under ambient humidity. Inactivation rates for these heat resistant spores are important considerations for planetary protection implementation where temperature, time and humidity conditions are used to estimate the effectiveness of dry heat microbial reduction (DHMR) procedures.