Abstract
SUMMARYUnder anaerobic culture conditions, 120 cultures of sporeforming rods were isolated from fresh and cured pork trimmings and from pork luncheon meat; 22 of these proved to be obligate anaerobic putrefactive organisms. Studied by the Reed and Orr method of rapid identification, the following species were identified: Clostridium. tetanomorphum, Cl. novyi, Cl. carnis, Cl. paraputrificum, Cl. tetani, Cl. histolyticum, and Cl. sporogenes. One culture was similar to Clostridium sp. National Canners Association putrefactive anaerobe 3679 (PA 3679). Serological relationships were determined by using antisera for Cl. sporogenes and PA 3679. No cross agglutination was obtained between Cl. sporogenes and PA 3679. An organism identified biochemically as Cl. carnis agglutinated in dilutions of 1:5120 of PA 3679 antiserum, indicating a very close serological relationship. Several organisms revealed antigens in common with Cl. sporogenes. The organism with biochemical reactions similar to PA 3679 showed no serological relationship to the known species. Serological relationships correlated with heat resistance while biochemical reactions did not.
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