ISSN:
1750-3841
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
,
Process Engineering, Biotechnology, Nutrition Technology
Notes:
Clostridium butyricum long known to cause spoilage in canned acid foods recently caused two separate cases of infant botulism in Italy by strains producing type E botulinum toxin. Heat resistance of spores of toxigenic and nontoxigenic C. butyricum was determined. The non-toxigenic strain was considerably more heat resistant, having a D-value at 212°F of 4.7 min compared to a D-value 170°F of 2.3–2.5 min for toxigenic strains at pH 7.0. Minimum pH for growth and toxin production was also determined. The nontoxigenic strain grew at pH 4.2; toxigenic strains grew and produced toxin at pH 5.2 but not at pH 5.0.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1365-2621.1990.tb03609.x
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