Evaluation of storage conditions and efficiency of a novel microencapsulated Salmonella phage cocktail for controlling S. enteritidis and S. typhimurium in-vitro and in fresh foods.

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ID: 1898
2019
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Abstract
S. Enteritidis and S. Typhimurium are typically linked to foodborne outbreaks. Phages have continued to expand in various food applications. In this study, microencapsulation is applied for enhancing the stability and efficacy of phages as bio-control agent. Microencapsulated phage cocktail kept in aluminium laminated foil bag (LF) at 4 °C showed the highest survivability with a titer loss of 0.5 log PFU/g after 12 weeks of storage. Titer loss of phage cocktail lysate >4 log PFU/mL was observed after 12 weeks, at 4 °C. Color change of microencapsulated phage cocktail kept in LF at 4 °C did not show any significant difference during storage, and water activity (free water content) at 0.13 was found in these conditions. In-vitro study, S. Enteritidis and S. Typhimurium were decreased 1.79 and 3.63 log CFU/mL, respectively at 37 °C. Whereas, 0.43 and 0.76 log CFU/mL, respectively were observed at 10 °C. In foods, S. Enteritidis and S. Typhimurium were decreased 0.57 and 1.78 log CFU/cm, respectively in meat. Whereas, 0.86 and 1.2 log CFU/g, respectively were observed in sprout. Foods with/without microencapsulated phage cocktail showed non-significant differences in liking scores after 2 days of storage. Overall, microencapsulated phage cocktail suggests another alternative for phage-based biocontrol with improved stability and efficacy for food application.
Reference Key
petsong2019evaluationfood Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Petsong, Kantiya;Benjakul, Soottawat;Vongkamjan, Kitiya;
Journal food microbiology
Year 2019
DOI
S0740-0020(19)30023-1
URL
Keywords Keywords not found

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