Studies on a Thermophilic Bacillus: Its Isolation, Properties, and Temperature Coefficient of Growth
- 1 December 1972
- journal article
- Published by American Society for Microbiology in Journal of Bacteriology
- Vol. 112 (3) , 1040-2
- https://doi.org/10.1128/jb.112.3.1040-1042.1972
Abstract
A thermophilic bacillus with minimal, optimal, and maximal growth temperatures of 40, 64.5, and 72 C, respectively, was isolated from soil. Biochemical and morphological studies place the isolate in group 1 of the classification of Walker and Wolf. After adaption to nitrate broth, the temperature coefficient for growth was found to be 20,400 cal/mol. When the temperature coefficient for growth of the isolate, psychrophilic bacteria, mesophilic bacteria, and a strain of Bacillus stearothermophilus are compared, there is no correlation with optimal temperature. The form of the Arrhenius equation, as used by some workers, is commented on.Keywords
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