Survival of listeria strains and shelf life determination of fresh blueberries (Vaccinium corymbosum) treated with cold atmospheric plasma

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dc.article.number822
dc.catalogadorpva
dc.contributor.authorConcha-Meyer, Anibal A.
dc.contributor.authorGonzález-Esparza, Alexandra
dc.contributor.authorCullen, Patrick J.
dc.contributor.authorVeloso Espinosa, Felipe Eduardo
dc.contributor.authorFavre Domínguez, Mario
dc.contributor.authorValenzuela Ahumada, Julio César
dc.contributor.authorToloza, Lorena
dc.contributor.authorNiemira, Brendan A.
dc.date.accessioned2024-03-15T14:36:14Z
dc.date.available2024-03-15T14:36:14Z
dc.date.issued2024
dc.description.abstractFresh blueberries are delicate, hand-picked, packaged, and refrigerated fruits vulnerable to spoilage and contamination. Cold atmospheric plasma (CAP) is a promising antimicrobial technology; therefore, this study evaluated the CAP treatment effect on acid-tolerant Listeria innocua and Listeria monocytogenes and evaluated changes in the quality of the treated fruit. Samples were spot-inoculated with pH 5.5 and 6.0 acid-adapted Listeria species. Samples were treated with gliding arc CAP for 15, 30, 45, and 60 s and evaluated after 0, 1, 4, 7, and 11 days of storage at 4 °C and 90% humidity for the following quality parameters: total aerobic counts, yeast and molds, texture, color, soluble solids, pH, and titratable acidity. CAP treatments of 30 s and over demonstrated significant reductions in pathogens under both the resistant strain and pH conditions. Sixty-second CAP achieved a 0.54 Log CFU g−1 reduction in L. monocytogenes (pH 5.5) and 0.28 Log CFU g−1 for L. monocytogenes (pH 6.0). Yeast and mold counts on day 0 showed statistically significant reductions after 30, 45, and 60 s CAP with an average 2.34 Log CFU g−1 reduction when compared to non-CAP treated samples. Quality parameters did not show major significant differences among CAP treatments during shelf life. CAP is an effective antimicrobial treatment that does not significantly affect fruit quality.
dc.fechaingreso.objetodigital2024-03-20
dc.fuente.origenORCID
dc.identifier.doi10.3390/foods13060822
dc.identifier.urihttps://doi.org/10.3390/foods13060822
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/84475
dc.information.autorucInstituto de Física; Veloso Espinosa, Felipe Eduardo; 0000-0002-6703-5449; 14943
dc.information.autorucInstituto de Física; Favre Domínguez, Mario; 0000-0002-2146-2920; 99732
dc.information.autorucInstituto de Física; Valenzuela Ahumada, Julio César; 0000-0001-8499-4599; 140886
dc.issue.numero6
dc.language.isoen
dc.nota.accesoContenido completo
dc.pagina.final15
dc.pagina.inicio1
dc.revistaFoods
dc.rightsacceso abierto
dc.rights.licenseCC BY 4.0 DEED Attribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectListeria
dc.subjectBlueberries
dc.subjectCold atmospheric plasma
dc.subjectShelf life
dc.subject.ddc510
dc.subject.deweyMatemática física y químicaes_ES
dc.titleSurvival of listeria strains and shelf life determination of fresh blueberries (Vaccinium corymbosum) treated with cold atmospheric plasma
dc.typeartículo
dc.volumen13
sipa.codpersvinculados14943
sipa.codpersvinculados99732
sipa.codpersvinculados140886
sipa.trazabilidadORCID;2024-03-11
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