4.7 Article

Pulsed light treatment for the reduction of Salmonella Typhimurium and Yersinia enterocolitica on pork skin and pork loin

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ELSEVIER
DOI: 10.1016/j.ijfoodmicro.2018.11.014

关键词

Pulsed broad spectrum light; Microbial reduction; Pork; Lipid peroxidation; Sensory analysis

资金

  1. Research Association of the German Food Industry (FEI e.V., Bonn, Germany) [AiF 17877 BG]

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The aim of the presented study was to investigate the impact of pulsed light on the reduction of Salmonella Typhimurium and Yersinia enterocolitica on pork skin and loin. Fluences of 0.52 to 19.11 J/cm(2) were applied to the pathogen-inoculated products to perform microbiological studies, as well as analyses of color, temperature, lipid peroxidation and odor. Reductions on pork skin ranged from 1.73 to 3.16 log for Salmonella and from 1.48 to 4.37 log for Yersinia. Microbial reduction was significantly lower on pork loin, varying between a minimum of 0.4 and a maximum of 1.7 log for both pathogens. Treatments >= 7.36 J/cm(2) modified the color parameters of pork skin and fluences >= 9.66 J/cm(2) rendered pork loin samples less red. All studies with pulsed light resulted in odor changes, except for the experiment on pork skin at 0.52 J/cm(2). Despite significant microbiological reduction on pork skin, further studies should be carried out to optimize this promising technology.

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