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J Bacteriol. 1973 February; 113(2): 932-936
Copyright © 1973 American Society for Microbiology. All Rights Reserved.

Time of Enterotoxin Formation and Release During Sporulation of Clostridium perfringens Type A

Food Research Institute and Department of Bacteriology, University of Wisconsin, Madison, Wisconsin 53706

ABSTRACT

Clostridium perfringens enterotoxin was detected intracellularly about 3 hr after the inoculation of vegetative cells into sporulation medium. The subsequent increase in intracellular enterotoxin concentration roughly paralleled but followed by 2.5 to 5 hr the increase in number of heat-resistant spores. The increase in biologically active toxin coincided with the increase in enterotoxin antigen. Enterotoxin was released from the sporangium with its lysis, concomitantly with the mature spore release.

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