Abstract
Experiments were conducted to gain a better understanding of the mechanism by which sodium chloride, sodium nitrate, and sodium nitrite supplement the action of heat in preserving canned cured meat products. Heated spores of putrefactive anaerobe 3679h were less tolerant of all three curing agents in the outgrowth medium than were unheated spores. When the curing agents were added to the heating menstruum, but not to the outgrowth medium, sodium chloride and sodium nitrate tended to protect the spores against heat injury, but sodium nitrite did not. When the spores were both heated and cultured in the presence of the curing agents: (i) nitrate and salt increased the apparent heat resistance at low concentrations (0.5 to 1%) but decreased it at concentrations of 2 to 4%; (ii) nitrite was markedly inhibitory, especially at pH 6.0. At the normal pH of canned luncheon meats (approximately 6.0), nitrite appears to be the chief preservative agent against spoilage by putrefactive anaerobes.
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Selected References
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- CAMPBELL L. L., Jr, FRANK H. A. Nutritional requirements of some putrefactive anaerobic bacteria. J Bacteriol. 1956 Mar;71(3):267–269. doi: 10.1128/jb.71.3.267-269.1956. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Curran H. R., Evans F. R. The Importance of Enrichments in the Cultivation of Bacterial Spores Previously Exposed to Lethal Agencies. J Bacteriol. 1937 Aug;34(2):179–189. doi: 10.1128/jb.34.2.179-189.1937. [DOI] [PMC free article] [PubMed] [Google Scholar]
- HACHISUKA Y. [STUDIES ON AMINO ACIDS REQUIRED FOR COLONY FORMATION OF SUBLETHALLY HEATED SPORES OF BACILLUS SUBTILIS]. Nihon Saikingaku Zasshi. 1964 Jun;19:162–168. [PubMed] [Google Scholar]
- UEHARA M., FUJIOKA R. S., FRANK H. A. METHOD FOR OBTAINING CLEANED PUTREFACTIVE ANAEROBE 3679 SPORES. J Bacteriol. 1965 Mar;89:929–930. doi: 10.1128/jb.89.3.929-930.1965. [DOI] [PMC free article] [PubMed] [Google Scholar]