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Effect of Modified Atmosphere Storage on C. Botulinum Toxigenesis and the Spoilage Microflora of Salmon Fillets
Author(s) -
STIER R. F.,
BELL L.,
ITO K. A.,
SHAFER B. D.,
BROWN L. A.,
SEEGER M. L.,
ALLEN B. H.,
PORCUNA M. N.,
LERKE P. A.
Publication year - 1981
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.1981.tb04450.x
Subject(s) - food spoilage , modified atmosphere , food science , clostridium botulinum , shelf life , fish <actinopterygii> , inoculation , bacteria , refrigeration , chemistry , biology , microbiology and biotechnology , fishery , horticulture , mechanical engineering , genetics , toxin , engineering
Modified atmosphere (MA) storage in conjunction with refrigeration has been shown to significantly increase the shelf life of fresh fish and other products, but the effects, if any on the outgrowth and toxigenesis of C. botulinum are unknown. A commercial system was duplicated in the laboratory and the effects of modified atmosphere on the outgrowth of C. botulinum types A, B, and E were observed in inoculated salmon fillets and sandwiches stored at 4.4°C and 22.2°C. Inoculated samples stored in air at the same temperatures were used as controls. No toxigensis was observed in either the air or modified samples stored at 4.4°C, but all inoculated samples held at 22.2°C were toxic within 2–3 days. Spoilage generally preceded toxigenesis. In a concurrent study, the tendency of CO 2 environments to repress the growth of gram negative bacteria to a greater extent than gram positive bacteria was also noted.