[Relationship between the ultrastructure and biochemical composition of spores and their resistance to high temperature exposure and chemical agents].
The author used the spores of B. cereus and of its two mutants (10id -- defective by spore coats, and No. 3 -- DPA-deficient). The mentioned microbes were subjected to the action of vapour (99 degrees), 5% sodium hydroxide solution at a temperature of 50 degreeC, and of 0.25% sodium hypochlorite solution. On the basis of the survival curves it was revealed that a mutant with defective coats possessed the least resistance to the factors under study. On these grounds a conclusion was drawn on the important portective function of the spore coat, and not simply of the presence of DPA, in the mechanism of thermo- and chemical resistance of spores.
D001409:Bacillus cereus / Q000032:analysis / Q000502:physiology* / Q000648:ultrastructure; D006358:Hot Temperature; D010848:Picolinic Acids / Q000032:analysis*; D012972:Sodium Hydroxide / Q000494:pharmacology; D012973:Sodium Hypochlorite / Q000494:pharmacology; D013171:Spores, Bacterial
D010848:Picolinic Acids; D012972:Sodium Hydroxide; D012973:Sodium Hypochlorite
Ustoĭchivost' spor k vozdeistviiu vysokoĭ temperatury i khimicheskikh sredstv v zavisimosti ot ikh ul'trastruktury i biokhimicheskogo sostava