Aerosol survival of Serratia marcescens as a function of oxygen concentration, relative humidity, and time
-
Published:1974-11-01
Issue:11
Volume:20
Page:1529-1534
-
ISSN:0008-4166
-
Container-title:Canadian Journal of Microbiology
-
language:en
-
Short-container-title:Can. J. Microbiol.
Author:
Cox C. S.,Gagen S. J.,Baxter Jean
Abstract
Previously the kinetics of loss of viability of freeze-dried Serratia marcescens 8UK were determined by Cox and Heckly as a function of oxygen concentration and time. Results are presented here when dehydration is brought about by aerosolization into atmospheres of low relative humidity (RH) rather than by freeze-drying. As for freeze-dried S. marcescens, oxygen was toxic and viable decay followed the same kinetics with respect to oxygen concentration and time. The influence of RH upon viable decay (which was not studied in the previous report) was that above 65% RH oxygen was not toxic but was progressively more toxic as the humidity was further reduced. Kinetic analyses of the results indicate that the site for the toxic action of oxygen lies in the interspace between the cytoplasmic membrane and the cell wall. Such a finding is consistent with other data which suggest that cell division and (or) cell wall synthesis in bacteria are inhibited by oxygen.
Publisher
Canadian Science Publishing
Subject
Genetics,Molecular Biology,Applied Microbiology and Biotechnology,General Medicine,Immunology,Microbiology
Cited by
11 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献