High voltage atmospheric cold air plasma control of bacterial biofilms on fresh produce

DC FieldValueLanguage
dc.contributor.authorPatange, Apurva-
dc.contributor.authorBoehm, Daniela-
dc.contributor.authorZiuzina, Dana-
dc.contributor.authorCullen, P. J.-
dc.contributor.authorGilmore, Brendan F.-
dc.contributor.authorBourke, Paula-
dc.date.accessioned2021-11-11T14:46:46Z-
dc.date.available2021-11-11T14:46:46Z-
dc.date.copyright2019 Elsevieren_US
dc.date.issued2019-03-16-
dc.identifier.citationInternational Journal of Food Microbiologyen_US
dc.identifier.issn0168-1605-
dc.identifier.urihttp://hdl.handle.net/10197/12634-
dc.description.abstractAtmospheric cold plasma (ACP) offers great potential for decontamination of food borne pathogens. This study examined the antimicrobial efficacy of ACP against a range of pathogens of concern to fresh produce comparing planktonic cultures, monoculture biofilms (Escherichia coli, Salmonella enterica, Listeria monocytogenes, Pseudomonas fluorescens) and mixed culture biofilms (Listeria monocytogenes and Pseudomonas fluorescens). Biotic and abiotic surfaces commonly occurring in the fresh food industry were investigated. Microorganisms showed varying susceptibility to ACP treatment depending on target and process factors. Bacterial biofilm populations treated with high voltage (80 kV) ACP were reduced significantly (p < 0.05) in both mono- and mixed species biofilms after 60 s of treatment and yielded non-detectable levels after extending treatment time to 120 s. However, an extended time was required to reduce the challenge mixed culture biofilm of L. monocytogenes and P. fluorescens inoculated on lettuce, which was dependent on biofilm formation conditions and substrate. Contained treatment for 120 s reduced L. monocytogenes and P. fluorescens inoculated as mixed cultures on lettuce (p < 0.05) by 2.2 and 4.2 Log 10 CFU/ml respectively. When biofilms were grown at 4 °C on lettuce, there was an increased resistance to ACP treatment by comparison with biofilm grown at temperature abuse conditions of 15 °C. Similarly, L. monocytogenes and P. fluorescens exposed to cold stress (4 °C) for 1 h demonstrated increased tolerance to ACP treatment compared to non-stressed cells. These finding demonstrates that bacterial form, mono versus mixed challenges as well as environmental stress conditions play an important role in ACP inactivation efficacy.en_US
dc.description.sponsorshipDepartment of Agriculture, Food and the Marineen_US
dc.description.sponsorshipScience Foundation Irelanden_US
dc.format.mediumPrint-Electronic-
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.rightsThis is the author’s version of a work that was accepted for publication in International Journal of Food Microbiology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in International Journal of Food Microbiology (293 (2019)) https://doi.org/10.1016/j.ijfoodmicro.2019.01.005en_US
dc.subjectBiofilmsen_US
dc.subjectPseudomonas fluorescensen_US
dc.subjectEscherichia colien_US
dc.subjectListeria monocytogenesen_US
dc.subjectLettuceen_US
dc.subjectAgricultural cropsen_US
dc.subjectFood microbiologyen_US
dc.subjectFood contaminationen_US
dc.subjectCold temperatureen_US
dc.subjectPlasma gasesen_US
dc.titleHigh voltage atmospheric cold air plasma control of bacterial biofilms on fresh produceen_US
dc.typeJournal Articleen_US
dc.internal.authorcontactotherpaula.bourke@ucd.ieen_US
dc.statusPeer revieweden_US
dc.identifier.volume293en_US
dc.identifier.startpage137en_US
dc.identifier.endpage145en_US
dc.identifier.doi10.1016/j.ijfoodmicro.2019.01.005-
dc.neeo.contributorPatange|Apurva|aut|-
dc.neeo.contributorBoehm|Daniela|aut|-
dc.neeo.contributorZiuzina|Dana|aut|-
dc.neeo.contributorCullen|P. J.|aut|-
dc.neeo.contributorGilmore|Brendan F.|aut|-
dc.neeo.contributorBourke|Paula|aut|-
dc.description.othersponsorshipBiotechnology and Biological Sciences Research Councilen_US
dc.date.updated2020-09-21T21:52:25Z-
dc.identifier.grantidBB/P008496-
dc.identifier.grantidDAFM 13/F/444-
dc.identifier.grantidSFI/16/BBSRC/3391-
dc.rights.licensehttps://creativecommons.org/licenses/by-nc-nd/3.0/ie/en_US
item.fulltextWith Fulltext-
item.grantfulltextopen-
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