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Appl Environ Microbiol. 1966 March; 14(2): 223-228
Copyright © 1966 American Society for Microbiology. All Rights Reserved.

Use of the Anaerobic Pouch in Isolating Clostridium botulinum Spores from Fresh Meats

Swift & Company, Research & Development Center, Chicago, Illinois

ABSTRACT

The anaerobic film pouch was demonstrated to be an effective device for the primary isolation of Clostridium botulinum types A and B spores from raw pork, beef, and chicken. Optimal pasteurization of these meats (for reduction of nonspore microflora without affecting indigenous putrefactive anaerobic spore levels) was 50 min at 60 C. C. botulinum spores were recovered with good precision from meat samples inoculated with mixtures of C. botulinum and Putrefactive Anaerobe 3679 at 1:1 and at 1:99 ratios. Verification of C. botulinum isolates was accomplished by protection testing of subcultures in mice.