Document Detail


Atmospheric Cold Plasma Inactivation of Escherichia coli in Liquid Media inside a Sealed Package.
MedLine Citation:
PMID:  23190122     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
AIMS: The main objective of this study was to determine the inactivation efficacy of dielectric barrier discharge atmospheric cold plasma (DBD-ACP) generated inside a sealed package for Escherichia coli ATCC 25922. METHODS AND RESULTS: A plasma discharge was generated between two circular aluminium electrodes at 40 kV. E. coli suspensions (10(7) CFU ml(-1) ) in either Maximum Recovery Diluent (MRD) or Phosphate Buffered Saline (PBS) were treated in a 96-well microtiter plate inside a sealed package. The effects of treatment time, post treatment storage time, either direct or indirect samples exposure to the plasma discharge and suspension media were studied. Regardless of the media tested, 20 s of direct and 45 s of indirect plasma treatment resulted in complete bacterial inactivation (7 log CFU ml(-1) ). At the lower plasma treatment times (10-30 s) investigated, effects of suspension media and mode of exposure on the inactivation efficacy were evident. The inactivation efficacy was also influenced by the post-treatment storage time. CONCLUSIONS: It was demonstrated that the novel DBD-ACP can inactivate high concentrations of E. coli suspended in liquids within sealed packages in seconds. © 2012The Authors Journal of Applied Microbiology © 2012 The Society for Applied Microbiology.
Authors:
D Ziuzina; S Patil; P J Cullen; K M Keener; P Bourke
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-11-29
Journal Detail:
Title:  Journal of applied microbiology     Volume:  -     ISSN:  1365-2672     ISO Abbreviation:  J. Appl. Microbiol.     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-29     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9706280     Medline TA:  J Appl Microbiol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2012The Authors Journal of Applied Microbiology © 2012 The Society for Applied Microbiology.
Affiliation:
School of Food Science and Environmental Health, Dublin Institute of Technology, Ireland.
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