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Viability of Clostridial Spores and the Requirements of Damaged Organisms III. The Effect of Delay in Plating after Exposure to the Bactericidal Influence
Author(s) -
Futter B. V.,
Richardson G.
Publication year - 1972
Publication title -
journal of applied bacteriology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.889
H-Index - 156
eISSN - 1365-2672
pISSN - 0021-8847
DOI - 10.1111/j.1365-2672.1972.tb03702.x
Subject(s) - spore , incubation , ethylene oxide , microbiology and biotechnology , chemistry , incubation period , biology , biochemistry , organic chemistry , copolymer , polymer
S ummary : Post‐treatment recovery patterns of damaged spores of Clostridium welchii have been investigated. Heat damaged spores showed an early reactivation during storage but counts subsequently declined. Spores damaged by very low intensity γ‐radiation showed a considerable degree of increased recovery during post‐treatment storage. With radiation at higher intensities there was evidence only of a low rate of reactivation when storage was at 4°, and at 21° counts decreased. Progressive loss in viability was also shown in ethylene oxide treated spores on kaolin powders though in the presence of albumin this trend was arrested. A dependence of count on atmosphere of incubation, demonstrated also in 3 other species, was shown to develop during post‐treatment storage.