Effect of a bacteriophage cocktail in combination with modified atmosphere packaging in controlling Listeria monocytogenes on fresh-cut spinach

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ID: 105609
2016
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Abstract
A Listeria monocytogenes-specific bacteriophage cocktail was evaluated for its activity against a nalidixic acid-resistant L. monocytogenes (Lm-NalR) isolate on fresh-cut spinach stored under modified atmosphere packaging at various temperatures. Pieces (~2 × 2 cm2) of fresh spinach inoculated with 4.5 log CFU/cm2 Lm-NalR were sprayed with the phage cocktail (6.5 log plaque-forming units [PFU]/cm2) or a control. The samples were stored at 4°C or 10°C for up to 14 d in sealed packages filled with either atmospheric air (AA) or modified atmosphere (MA). At 4°C under AA, the phages significantly (P ≤ 0.05) lowered the Lm-NalR populations on spinach, compared to control-treated inoculated samples, by 1.12 and 1.51 log CFU/cm2 after 1 and 14 d, respectively. At 4°C under MA, Lm-NalR was significantly reduced by 1.95 log CFU/cm2 compared to control leaves after both 1 and 14 d. At 10°C under AA, the phages significantly reduced Lm-NalR by 1.50 and 2.51 log CFU/cm2 after 1 and 14 d compared to the control. Again at 10°C under MA, the phages significantly reduced Lm-NalR by 1.71 and 3.24 log CFU/cm2 compared to control after 1 and 14 d, respectively. The results support the potential of lytic bacteriophages in effectively reducing populations of L. monocytogenes on freshcut leafy produce, under both AA and MA conditions.
Reference Key
o2016effectirish Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors O., Boyacioglu;A., Sulakvelidze;M., Sharma;I., Goktepe;
Journal irish journal of agricultural and food research
Year 2016
DOI
DOI not found
URL
http://www.degruyter.com/view/j/ijafr.2016.55.issue-1/ijafr-2016-0007/ijafr-2016-0007.xml?format=INT
Keywords
Microbiology Infectious and parasitic diseases Veterinary medicine Medicine (General) Medicine Engineering (General). Civil engineering (General) Agriculture (General) gynecology and obstetrics

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