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Appl. Environ. Microbiol., 04 1996, 1441-1443, Vol 62, No. 4
Copyright © 1996, American Society for Microbiology

Sporulation-promoting ability of Clostridium perfringens culture fluids

NJ Shih and RG Labbe
Department of Food Science, University of Massachusetts, Amherst 01003, USA.

The culture supernatant fluids (CSFs) of 12 strains of Clostridium perfringens types A, B, C, and D stimulated sporulation of test strains NCTC 8238 and NCTC 8449 of this organism. The sporulation-promoting ability was present in vegetative and sporulating CSFs of both enterotoxin-positive (Ent+) and Ent- strains. The sporulation factor possessed a molecular weight between 1,000 and 5,000 and was heat and acid stable. This study suggests a potential role for Ent- strains in food-borne disease outbreaks caused by Ent+ strains of C. perfringens type A.

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