Survival and outgrowth of Clostridium botulinum type E spores in smoked fish. 1968

L N Christiansen, and J Deffner, and E M Foster, and H Sugiyama

Chub injected in the loin muscle with 10(6)Clostridium botulinum type E spores were smoked to an internal temperature of 180 F (82.2 C) for 30 min, sealed in plastic bags, and incubated at room temperature (20 to 25 C) for 7 days. Viable type E spores were found in practically all such fish. Toxin formation by the survivors in the smoked fish was dependent on the brine concentration of the smoked fish. A brine concentration of 3% or higher, as measured in the loin muscle, inhibited toxin formation. Six different type E strains gave similar results. Only a few hundred of the million spores in the inoculum survived the smoking. Moisture in the atmosphere during smoking did not reduce the incidence of fish with type E survivors.

UI MeSH Term Description Entries
D003014 Clostridium botulinum A species of anaerobic, gram-positive, rod-shaped bacteria in the family Clostridiaceae that produces proteins with characteristic neurotoxicity. It is the etiologic agent of BOTULISM in humans, wild fowl, HORSES; and CATTLE. Seven subtypes (sometimes called antigenic types, or strains) exist, each producing a different botulinum toxin (BOTULINUM TOXINS). The organism and its spores are widely distributed in nature.
D005396 Fish Products Food products manufactured from fish (e.g., FISH FLOUR, fish meal). Fish Product,Product, Fish,Products, Fish
D005516 Food Microbiology The presence of bacteria, viruses, and fungi in food and food products. This term is not restricted to pathogenic organisms: the presence of various non-pathogenic bacteria and fungi in cheeses and wines, for example, is included in this concept. Microbiology, Food
D006358 Hot Temperature Presence of warmth or heat or a temperature notably higher than an accustomed norm. Heat,Hot Temperatures,Temperature, Hot,Temperatures, Hot
D012965 Sodium Chloride A ubiquitous sodium salt that is commonly used to season food. Sodium Chloride, (22)Na,Sodium Chloride, (24)NaCl
D013170 Spores The reproductive elements of lower organisms, such as BACTERIA; FUNGI; and cryptogamic plants. Spore
D014118 Toxins, Biological Specific, characterizable, poisonous chemicals, often PROTEINS, with specific biological properties, including immunogenicity, produced by microbes, higher plants (PLANTS, TOXIC), or ANIMALS. Biological Toxins

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