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Updated: Jan 26, 2026

Enrichment and Detection of Clostridium perfringens Toxinotypes in Retail Food Samples
Published on: October 18, 2019
Improved Media for Sporulation and Enterotoxin Production by Clostridium perfringens
Stanley M Harmon1, Donald A Kautter1
1Division of Microbiology, Food and Drug Administration, Washington, D.C. 20204.
Abstract:
Sporulation of 24 strains of Clostridium perfringens isolated from stools of food poisoning patients and normal controls was improved by adding sodium carbonate to Duncan-Strong (DS) sporulation medium and replacing starch with raffinose in Taniguti's AEA medium. Viable counts of heat-tolerant spores (75°C for 20 min) were 2 to 186 times greater in modified AEA medium and 2 to 169 times greater in modified DS than in DS medium. Reversed passive latex agglutination assays revealed a corresponding increase in enterotoxin titers in supernatant fluids of the 12 enterotoxigenic strains grown in modified AEA medium and in modified DS medium.
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