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  • Blackwell Publishing Ltd  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 55 (1990), S. 0 
    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
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 50 (1985), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Hard-cooked eggs were cooled for 30 min in water containing concentrations of spores of Clostridium botulinum ranging from 101 to 104 spores per mL. The eggs were then air dried and incubated either aerobically, anaerobically, or in sealed plastic containers and checked daily for toxin production using the mouse bioassay. Toxin was detected inside the eggs within 2 to 7 days depending on the method of incubation. Sensory changes in toxic eggs were also recorded, and although the proteolytic strains usually produced unacceptable odors and/or appearances, these dhanges were not always detected.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
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