title: Dry-heat resistance of bacterial spores recovered from mariner-Mars 1969 spacecraft.
abstract: The dry-heat resistances of 70 bacterial spore isolates recovered from Mariner-Mars 1969 spacecraft were determined and expressed as D values (decimal reduction times). Fifty per cent of the spore isolates had D values of 60 min or less at 125 C. Of organisms with D values greater than 60 min, four were selected for a study of the effect of sporulation medium and suspension menstruum on dry-heat resistance. Both sporulation medium and suspension menstruum were found to affect significantly the dry-heat resistance of the bacterial spores tested.
authors.affiliation: Jet Propulsion Laboratory, Pasadena, California 91103.
authors.forename: M D
authors.initials: MD
authors.lastname: Wardle
authors.forename: W A
authors.initials: WA
authors.lastname: Brewer
authors.forename: M L
authors.initials: ML
authors.lastname: Peterson