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Characterization of Coliphages Recovered from Foods According to Temperature of Infectivity
J E Kennedy1, C I Wei1, J L Oblinger1
1Food Science and Human Nutrition Department, University of Florida, Gainesville, Florida 32611 and College of Agriculture, University of Missouri, Columbia, Missouri 65211.
Abstract:
Coliphages recovered from 38 samples of ten different food products were characterized with regard to temperature of infectivity. High temperature (HT) phages were capable of reproduction at or above 30°C, mid temperature (MT) phages over a range of 20 to 42°C and low temperature (LT) phages at or below 20°C. The percentage of HT coliphages isolated with Escherichia coli C-3000 host were consistently higher than corresponding percentages with E. coli C host. Coliphages recovered from all products were primarily HT or MT coliphages.
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