Affiliation:
1. Naval Biological Laboratory, School of Public Health, University of California, Berkeley, California
Abstract
Campbell, Jack
E. (University of California, Berkeley),
and R. L. Dimmick
. Effect of 3% hydrogen peroxide on the viability of
Serratia marcescens
. J. Bacteriol.
91:
925–929. 1966.—Populations of
Serratia marcescens
were exposed to 3% H
2
O
2
at temperatures from 0 to 20 C. The reaction appeared to follow an Arrhenius plot, but variable numbers of diminutive colonies were found after cell numbers started to decrease. Colony numbers varied on different sampling media and increased when additional incubation was imposed. The overall reaction was sensitive to age of culture, and growth capabilities of treated samples varied with time of treatment, especially during times when no loss of viability was noted. Catalase activity per cell did not correlate with changes in sensitivity; iron added to growth medium increased catalase activity and decreased sensitivity, but not in the same manner. Although the fundamental reaction is presumably molecular in nature, present methods of viability assay measure more than single events and are not suitable for these studies.
Publisher
American Society for Microbiology
Subject
Molecular Biology,Microbiology
Reference6 articles.
1. Titrage photocolorimetrique de faibles quantites d'eau oxygenee;BONET-MAURY P.;Compt. Rend.,1944
2. Rhythmic response of Serratia marcescens to elevated temperature;DIMMICK R. L.;J. Bacteriol.,1965
3. Colorimetric determination of hydrogen peroxide;ELSENBERG G. M.;Ind. Eng. Chem.,1943
4. Nonparticipation of hydrogen peroxide in the cytochrome oxidase reaction;KRASNA A. I.;Arch. Biochem. Biophys.,1965
5. Variations in catalase activity during a bacterial growth cycle;MCCARTHY B. J.;Proc. Roy. Soc. (London) Ser. B,1959
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