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  • Title: ICMSF methods studies. VIII. Comparative study for the enumeration of Clostridium perfringens in foods.
    Author: Hauschild AH, Gilbert RJ, Harmon SM, O'Keeffe MF, Vahlefeld R.
    Journal: Can J Microbiol; 1977 Jul; 23(7):884-92. PubMed ID: 195698.
    Abstract:
    Four methods were compared in an international comparative study for the enumeration of Clostridium perfringens: the SFP (Shahidi-Ferguson perfringens) agar (A), TSC (tryptose-sulfite-cycloserin) agar (B), SC (sulfite-cycloserine) agar (C), and neomycin blood agar (D) methods. The confirmed C. perfringens counts were slightly lower for D than for A-C. The percentages of presumptive colonies confirmed as C. perfringens were essentially the same in each method. The relative numbers of nonspecific colonies were the lowest in C, followed by B, D, and A. The methods were also compared for simplicity and for aspects associated with the recognition and selection of presumptive colonies.
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