Affiliation:
1. Department of Microbiology, Oregon State University, Corvallis, Oregon
Abstract
The R
1
strain of
Micrococcus radiodurans
, previously determined to be more resistant than three other strains exposed to gamma radiation, was studied further to determine the influence of certain environmental factors on resistance to radiation inactivation. The frozen state offered insignificant protection to the organisms irradiated in raw puréed beef. Resistance was reduced by higher menstruum temperatures (40 and 50 C) during irradiation. Preirradiation heat treatment was found to lower resistance to subsequent irradiation. When the cells were irradiated in buffer at pH 5, 7, or 9, no differences in resistance were noted. Cell suspensions in buffer were protected to some extent by cysteine but not by thioglycolate. Ascorbate enhanced radiation inactivation.
Publisher
American Society for Microbiology
Subject
General Pharmacology, Toxicology and Pharmaceutics,General Immunology and Microbiology,General Biochemistry, Genetics and Molecular Biology,General Medicine
Reference34 articles.
1. An aftereffect of ionizing radiation on a mutant of Escherichia coli;ADLER H. I.;Radiation Res.,1958
2. Inactivation of bacteriophage after irradiation;ALPER T.;Brit. J. Radiol.,1954
3. Studies on a radio-resistant micrococcus. I. Isolation, morphology, cultural characteristics, and resistance to gamma radiation;ANDERSON A. W.;Food Technol.,1956
4. ANDERSON A. W. K. E. RASH AND P. R. ELLIKER. 1961. Taxonomy of a recently isolated radiation-resistant micrococcus. Bacteriol. Proc. p. 56.
5. The influence of environmental factors on the microbicidal effect of ionizing radiations;BRIDGES B. A.;J. Appl. Bacteriol.,1959
Cited by
4 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