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  • Title: [Sporicidal effect of Presept and Chloramine B on Bacillus cereus spores].
    Author: Hlavácek O, Vinter V, Chaloupka J.
    Journal: Epidemiol Mikrobiol Imunol; 1998 Dec; 47(4):150-3. PubMed ID: 9919816.
    Abstract:
    The sporicidal effect of Presept was compared with Chloramine B on the spores of Bacillus cereus. Either compound was calibrated to the same concentration of active chlorine. While a portion of spore population after 4 hrs of treatment by Chloramine germinated and started to divide in a rich nutrient medium, the optical density of the culture inoculated with spores treated by Presept did not increase even after 7 hrs when exposed to the nutrient medium. Significant morphological differences were found in either population of spores. Spores treated by Presept lost the impermeability within 3 hrs in the nutrient medium but almost no postgerminative development was observed. However, a portion of spores treated by Chloramine B developed after germination within 3 hrs into vegetative cells. It seems that Presept does not block germination and/or loss of impermeability of spores, but prevents their postgerminative development and division.
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