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  • Title: Effect of pH of the recovery medium on the apparent heat resistance of three strains of Bacillus cereus.
    Author: González I, López M, Mazas M, Bernardo A, Martín R.
    Journal: Int J Food Microbiol; 1996 Aug; 31(1-3):341-7. PubMed ID: 8880321.
    Abstract:
    The influence of pH of the recovery medium, in the range 7.6-5.4, on the apparent heat resistance of three strains of Bacillus cereus (ATCC 4342, 7004 and 9818) has been investigated. The highest counts of heat-injured spores were obtained at pH near neutral, decreasing markedly as pH was reduced, especially with longer heating times. When the media were acidified, the apparent D-values tended to decrease, although some exceptions related to the strain and the nature of the medium were observed. z-Values determined were not affected by the pH of the medium.
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