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  5. Controlling microbial safety challenges of meat using high voltage atmospheric cold plasma
 
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Controlling microbial safety challenges of meat using high voltage atmospheric cold plasma

Author(s)
Han, L.  
Ziuzina, Dana  
Heslin, Caitlin  
Bourke, Paula  
et al.  
Uri
http://hdl.handle.net/10197/12636
Date Issued
2016-06-22
Date Available
2021-11-11T14:52:32Z
Abstract
Atmospheric cold plasma (ACP) is a non-thermal technology, effective against a wide range of pathogenic microorganisms. Inactivation efficacy results from plasma generated reactive species. These may interact with any organic components in a test matrix including the target microorganism, thus food components may exert a protective effect against the antimicrobial mode of action. The effect of an in-package high voltage ACP process applied in conjunction with common meat processing MAP gas compositions as well as bacteria type and meat model media composition have been investigated to determine the applicability of this technology for decontamination of safety challenges associated with meat products. E. coli, L. monocytogenes, and S. aureus in PBS were undetectable after 60 s of treatment at 80 kVRMS in air, while ACP treatment of the contaminated meat model required post-treatment refrigeration to retain antimicrobial effect. The nutritive components in the meat model exerted a protective effect during treatment, where 300 s ACP exposure yielded a maximum reduction of 1.5 log using a high oxygen atmosphere, whilst using air and high nitrogen atmospheres yielded lower antimicrobial efficacy. Furthermore, an ROS assay was performed to understand the protective effects observed using the meat model. This revealed that nutritive components inhibited penetration of ROS into bacterial cells. This knowledge can assist the optimization of meat decontamination using ACP technology where interactions with all components of the food matrix require evaluation.
Sponsorship
European Commission - Seventh Framework Programme (FP7)
Type of Material
Journal Article
Publisher
Frontiers Media
Journal
Frontiers in Microbiology
Volume
7
Copyright (Published Version)
2016 the Authors
Subjects

High voltage plasma

Biofilm

Beef extract

Dielectric barrier di...

Enterica serovar typh...

Ready to eat

Escherichia-coli

Listeria monocytogene...

Pathogen inactivation...

Foodborne pathogens

Quality attributes

Packaging systems

DOI
10.3389/fmicb.2016.00977
Language
English
Status of Item
Peer reviewed
ISSN
1664-302X
This item is made available under a Creative Commons License
https://creativecommons.org/licenses/by/3.0/ie/
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Controlling Microbial Safety Challenges of Meat Using High Voltage Atmospheric Cold Plasma.pdf

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1.87 MB

Format

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Checksum (MD5)

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Owning collection
Biosystems and Food Engineering Research Collection

Item descriptive metadata is released under a CC-0 (public domain) license: https://creativecommons.org/public-domain/cc0/.
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