title: [Effect of calcium hypochlorite on Bacillus anthracoides spores].
abstract: The sublethal dose of calcium hypochlorite (CH) of 0.2--0.3 mg/ml active chlorine did not cause, after 5 min, morphological changes in the spores of Bacillus anthracoides which could be detected by phase contrast microscopy, or a decrease in the content of dipicolinic acid (DPA) in the spores. Further cultivation of the spores treated with the sublethal dose of CH om MPA resulted in a delay of changes which were typical of normal germination process (swelling, loss of light refraction, decrease in DPA content). The action of the lethal dose of CH (0.2--0.3 mg/ml active chlorine during 1.5 hr or 5.6 mg/ml active chlorine during 1 hr) causes a decrease in light refraction, changes in the dimensions of spores, and a decrease in the content of DPA in the spores by a factor of 4--5. A sharp decrease in the content of DPA in the spores may characterize not only their germination but also their death caused by lethal doses of the chlorine containing disinfectant.
mesh_terms: D001407:Bacillus / Q000187:drug effects* / Q000254:growth & development / Q000378:metabolism; D004202:Disinfectants / Q000494:pharmacology*; D006997:Hypochlorous Acid / Q000494:pharmacology*; D010848:Picolinic Acids / Q000378:metabolism; D013171:Spores, Bacterial / Q000187:drug effects / Q000254:growth & development / Q000378:metabolism
chemical_list: D004202:Disinfectants; D010848:Picolinic Acids; D006997:Hypochlorous Acid
vernacular_title: Deĭstvie gipokhlorita kal'tsiia na spory Bacillus anthracoides