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Title: Cold atmospheric gas plasma disinfection of chicken meat and chicken skin contaminated with Listeria innocua
Authors: Noriega, Estefanía
Shama, Gilbert
Laca, Adriana
Diaz, Mario
Kong, Michael G.
Keywords: Cold atmospheric gas plasma
Decontamination
Chicken skin
Chicken muscle
Listeria innocua
Issue Date: 2011
Publisher: © Elsevier
Citation: NORIEGA, E. ... et al, 2011. Cold atmospheric gas plasma disinfection of chicken meat and chicken skin contaminated with Listeria innocua. Food Microbiology, 28 (7), pp. 1293-1300
Abstract: Gas plasmas generated at atmospheric pressure and ambient temperatures offer a possible decontamination method for poultry products. The efficacy of cold atmospheric gas plasmas for decontaminating chicken skin and muscle inoculated with Listeria innocua was examined. Optimization of operating conditions for maximal bacterial inactivation was first achieved using membrane filters on which L. innocua had been deposited. Higher values of AC voltage, excitation frequency and the presence of oxygen in the carrier gas resulted in the greatest inactivation efficiency, and this was confirmed with further studies on chicken muscle and skin. Under optimal conditions, a 10 s treatment gave > 3 log reductions of L. innocua on membrane filters, an 8 min treatment gave 1 log reduction on skin, and a 4 min treatment gave > 3 log reductions on muscle. These results show that the efficacy of gas plasma treatment is greatly affected by surface topography. Scanning electron microscopy (SEM) images of chicken muscle and skin revealed surface features wherein bacteria could effectively be protected from the chemical species generated within the gas plasma. The developments in gas plasma technology necessary for its commercial application to foods are discussed.
Description: This article was published in the journal, Food Microbiology [© Elsevier ]. The definitive version is available at: http://www.sciencedirect.com/science/article/pii/S0740002011001341
Version: Submitted for publication
DOI: 10.1016/j.fm.2011.05.007
URI: https://dspace.lboro.ac.uk/2134/8675
Publisher Link: http://dx.doi.org/10.1016/j.fm.2011.05.007
ISSN: 0740-0020
Appears in Collections:Published Articles (Chemical Engineering)

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