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Prevalence of Clostridium botulinum in Commercial Liver Sausage
A H W Hauschild1, R Hilsheimer1
1Microbiology Research Division, Health Protection Branch, Health and Welfare Canada, Tunney's Pasture, Ottawa, Ontario, Canada K1A 0L2.
Abstract:
Samples of 75 g of commercial liver sausage were cultured, with and without prior heating, for the presence of viable Clostridium botulinum . Three of 276 heated cultures and 2 of 276 unheated cultures produced botulinal toxin, all of type A. The most probable number of botulinal spores was estimated at 0.15/kg. The estimate for "total" C. botulinum , based on 5 toxic cultures in 276 heated and unheated pairs, was 0.24/kg. The 99% confidence limits were 0.02 to 0.53 per kg and 0.05 to 0.69 per kg, respectively .
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