The dry-heat resistance characteristics of spores of psychrophilic organisms isolated from soil samples from the Viking spacecraft assembly areas at Cape Kennedy Space Flight Center, Cape Canaveral, Fla., were studied. Spore suspensions were produced, and dry-heat D values were determined for the microorganisms that demonstrated growth or survival under a simulated Martian environment. The dry-heat tests were carried out by using the planchet-boat-hot plate system at 110 and 125 C with an ambient relative humidity of 50% at 22 C. The spores evaluated had a relatively low resistance to dry heat. D (110 C) values ranged from 7.5 to 122 min, whereas the D (125 C) values ranged from less than 1.0 to 9.8 min.


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    Title :

    Dry-heat resistance of selected psychrophiles


    Contributors:
    Winans, L. (author) / Pflug, I. J. (author) / Foster, T. L. (author)


    Publication date :

    1977-08-01


    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English