Media for Confirming Clostridium perfringens from Food and Feces

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Abstract
Several media recommended for confirming isolates of Clostridium perfringens from selective plating media were evaluated. Media for testing motility, reduction of nitrate to nitrite, fermentation of lactose, and liquefaction of gelatin were found to be the most useful. A modified motility-nitrate medium, developed during the study, and lactose-gelatin medium were the most satisfactory for doing these tests. Fermentation of salicin and raffinose in peptone-yeast extract medium was also useful for differentiating atypically reacting strains of C. perfringens from a variety of culturally similar clostridia.

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