Document Detail

The occurrence of Clostridium botulinum type E in Finnish trout farms and the prevention of toxin formation in fresh-salted vacuum-packed trout fillets.
MedLine Citation:
PMID:  333383     Owner:  NLM     Status:  MEDLINE    
The occurrence of C. botulinum on two Finnish rainbow trout farms were studied. C. botulinum type E toxin was detected from samples of fish intestines in 10% and 4% of the samples and in 0% and 100% of dam bottom sediments, respectively. The toxin formation of inoculated C. botulinum type E in three different brands of commercial fresh-salted vacuum-packed trout fillets was also investigated. In the brand with a salt concentration of 2.7% (a w = 0.96) and no nitrate, the toxin was formed in two weeks at 10 and 20 degrees C. If the pH of the product was lowed to 4.90 and NaCl concentration increased to 5.67% (a w = 0.94%) no toxin was formed even without the use of nitrate. By adding 0.1% of sodium nitrate to the curing solution (0.046% nitrate in the product) the toxin formation was brought to an end. According to the results of the study C. botulinum type E presents a potential health risk for man as well as for fish also in Finland. Trout products must be manufactured and stored in such a way that the possibility of toxin formation is eliminated.
K Ala-Huikku; E Nurmi; H Pajulahti; M Raevuori
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Nordisk veterinaermedicin     Volume:  29     ISSN:  0029-1579     ISO Abbreviation:  Nord Vet Med     Publication Date:  1977 Sep 
Date Detail:
Created Date:  1977-11-25     Completed Date:  1977-11-25     Revised Date:  2003-11-14    
Medline Journal Info:
Nlm Unique ID:  0203744     Medline TA:  Nord Vet Med     Country:  DENMARK    
Other Details:
Languages:  eng     Pagination:  386-91     Citation Subset:  IM    
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MeSH Terms
Botulinum Toxins* / biosynthesis
Botulism / prevention & control
Clostridium botulinum* / isolation & purification
Food Microbiology*
Food Preservation
Reg. No./Substance:
0/Botulinum Toxins

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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