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EFFECT OF COLD STORAGE ON INACTIVATION OF ESCHERICHIA COLI BY 313 nm IRRADIATION
Author(s) -
Newman C.
Publication year - 1978
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.1978.tb07613.x
Subject(s) - escherichia coli , irradiation , incubation , cold storage , bacteria , chemistry , viability assay , microbiology and biotechnology , biology , food science , biophysics , cell , biochemistry , physics , horticulture , genetics , nuclear physics , gene
. Data are presented showing that the inactivation response of exponential phase Escherichia coli to 313 nm irradiation is affected by previous storage of cells at 3°C in M9 buffer. A similar effect of cold storage on the far‐UV inactivation response was not observed. Cold storage alone causes exponential loss in cell viability. After 0.95 days, cell viability is only about 15% of that observed immediately after exposure of cells to cold incubation. However, irradiation at 313 nm causes reactivation of these cold‐inactivated bacteria.