Winans L, Pflug I J, Foster T L
Appl Environ Microbiol. 1977 Aug;34(2):150-4. doi: 10.1128/aem.34.2.150-154.1977.
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 degrees C with an ambient relative humidity of 50% at 22 degrees C. The spores evaluated had a relatively low resistance to dry heat. D(110 degrees C) values ranged from 7.5 to 122 min, whereas the D(123 degrees C) values ranged from less than 1.0 to 9.8 min.
对从佛罗里达州卡纳维拉尔角肯尼迪航天中心维京航天器组装区的土壤样本中分离出的嗜冷生物孢子的耐热特性进行了研究。制备了孢子悬浮液，并测定了在模拟火星环境下表现出生长或存活的微生物的干热D值。干热试验采用平皿-舟皿-热板系统，在110和125摄氏度下进行，22摄氏度时环境相对湿度为50%。所评估的孢子对干热的耐受性相对较低。D（110摄氏度）值范围为7.5至122分钟，而D（123摄氏度）值范围为小于1.0至9.8分钟。
