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Effect of radiolytic products on bacteria in a food system. [Escherichia coli; Pediococcus cerevisiae; Moraxella-Acinetobacter; Micrococcus sp]

Journal Article · · J. Food Sci.; (United States)
OSTI ID:5960156
Inhibitory effects of radiolytic products were studied using Escherichia coli, Pediococcus cerevisiae, and two radiation-resistant microorganisms, an isolate of Moraxella-Acinetobacter and a Micrococcus sp. End Products of an irradiation dose of 300 Krads completely inhibited resistant organisms on an experimental medium with a very low concentration of nutrients. Plate count agar, with higher nutrient concentration, required 600 Krads to produce the same inhibition. On the same medium, radiation-sensitive organisms could tolerate products generated by a 1000 Krad dose. However, no inhibition could be detected when either Escherichia coli or Moraxella-Acinetobacter was incubated at 5/sup 0/C on the surface of fresh meat irradiated to 1500 Krad. The effects of inhibitory products in culture media could be mitigated by the addition of catalase or sodium pyruvate. 19 references, 2 figures, 4 tables.
Research Organization:
Univ. of Nebraska, Lincoln
OSTI ID:
5960156
Journal Information:
J. Food Sci.; (United States), Journal Name: J. Food Sci.; (United States) Vol. 49:2; ISSN JFDSA
Country of Publication:
United States
Language:
English