Journal
FOOD CONTROL
Volume 60, Issue -, Pages 401-407Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodcont.2015.08.020
Keywords
Electrolyzed water; Cold-smoking; Atlantic salmon; Listeria monocytogenes; Quality
Categories
Funding
- USDA-NIFA [2011-68003-20096]
- Washington State Agricultural Experiment Station
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Listeria monocytogenes contamination in ready-to-eat (RTE) fish products, in particular in cold-smoked salmon is an important food safety concern. This study evaluated the antimicrobial activity of electrolyzed oxidizing (EO) water as a pretreatment method during the process of cold-smoked salmon to inactivate L. monocytogenes. In addition, the effect of EO water treatment on the sensory and textural quality of the final product was also evaluated. Raw Atlantic salmon (Salmo solar) fillets were inoculated with L. monocytogenes (with an approximately cell number of 6 x 10(5) CFU/g L. monocytogenes ATCC 19114) and treated with EO water at three different temperatures (20, 30, and 40 degrees C) and at three different exposure time of 2, 6, and 10 min before the cold-smoking process. A combination of EO water and a mild temperature (40 degrees C) had reduced L. monocytogenes populations by 2.85 log(10) CFU/g. The sensory as evaluated by a consumer panel (N = 71) and texture, which was measured by texture analysis showed no significant changes between EO and mild temperature treated samples and the control. (C) 2015 Elsevier Ltd. All rights reserved.
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