Investigation of a large gap cold plasma reactor for continuous in-package decontamination of fresh strawberries and spinach

DC FieldValueLanguage
dc.contributor.authorZiuzina, Dana-
dc.contributor.authorMisra, N. N.-
dc.contributor.authorHan, L.-
dc.contributor.authorBourke, Paula-
dc.contributor.authoret al.- Elsevieren_US
dc.identifier.citationInnovative Food Science and Emerging Technologiesen_US
dc.description.abstractThe aim of this work was to investigate the efficacy of a large gap atmospheric cold plasma (ACP) generated with an open-air high-voltage dielectric barrier discharge (DBD) pilot-scale reactor, operated in either static (batch) or continuous mode for produce decontamination and quality retention. Significant reductions in the bacterial populations inoculated on the strawberries and spinach were obtained after the static mode of ACP treatment with 2.0 and 2.2 log10 CFU/ml reductions for E. coli and 1.3 and 1.7 log10 CFU/ml reductions for L. innocua, respectively. Continuous treatment was effective against L. innocua inoculated on strawberries, with 3.8 log10 CFU/ml reductions achieved. No significant differences in colour, firmness, pH or total soluble solids (TSS) was observed between control and ACP-treated samples with the effects of treatment retained during the shelf-life period. The pilot-scale atmospheric air plasma reactor retained the strawberry quality characteristics in tandem with useful antimicrobial efficacy. Industrial relevance: This in-package plasma technology approach is a low-power, water-free, non-thermal, post-package treatment. Generating cold plasma discharges inside food packages achieved useful antimicrobial effects on fresh produce. Depending on the bacterial type, produce and mode of ACP treatment significant reductions in the populations of pathogenic microorganisms attached to the fresh produce was achieved within 2.5 min of treatment. The principal technical advantages include contaminant control, quality retention, mitigation of re-contamination and crucially the retention of bactericidal reactive gas molecules in the food package volume, which then revert back to the original gas.en_US
dc.description.sponsorshipEuropean Commission - Seventh Framework Programme (FP7)en_US
dc.rightsThis is the author’s version of a work that was accepted for publication in Innovative Food Science and Emerging Technologies. 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 Innovative Food Science and Emerging Technologies (59, (2019))
dc.subjectDielectric barrier discharge (DBD)en_US
dc.subjectCold plasmaen_US
dc.subjectMicrobiological safetyen_US
dc.subjectContinuous processingen_US
dc.subjectQuality retentionen_US
dc.titleInvestigation of a large gap cold plasma reactor for continuous in-package decontamination of fresh strawberries and spinachen_US
dc.typeJournal Articleen_US
dc.statusPeer revieweden_US
dc.citation.otherArticle Numeber: 102229en_US
dc.neeo.contributorMisra|N. N.|aut|-
dc.neeo.contributoret al.||aut|-
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