Effect of ozonation and gamma-irradiation on post-harvest decontamination of mussels (Mytillus galloprovincialis) containing diarrhetic shellfish toxins

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dc.contributor.authorLouppis, A. P.en
dc.contributor.authorKatikou, P.en
dc.contributor.authorGeorgantelis, D.en
dc.contributor.authorBadeka, A. V.en
dc.contributor.authorKontominas, M. G.en
dc.date.accessioned2015-11-24T16:57:02Z
dc.date.available2015-11-24T16:57:02Z
dc.identifier.issn1944-0049-
dc.identifier.urihttps://olympias.lib.uoi.gr/jspui/handle/123456789/10524
dc.rightsDefault Licence-
dc.subjectdsp toxinsen
dc.subjectdecontaminationen
dc.subjectmusselsen
dc.subjectozonationen
dc.subjectirradiationen
dc.subjectokadaic aciden
dc.subjectlc/ms-msen
dc.subjectfluorometric detectionen
dc.subjectokadaic aciden
dc.subjectozoneen
dc.subjectestersen
dc.subjecthplcen
dc.subjectfooden
dc.titleEffect of ozonation and gamma-irradiation on post-harvest decontamination of mussels (Mytillus galloprovincialis) containing diarrhetic shellfish toxinsen
heal.abstractContamination of shellfish with diarrhetic shellfish poisoning (DSP) toxins readily occurs during algal blooms. Such phenomena raise important public health concerns and thus comprise a constant challenge to shellfish farmers, the seafood industry and health services, considering the increasing occurrence of toxic episodes around the world. To avoid the detrimental effects of such episodes, research has focused on the use of various detoxification methodologies that should be rapid, efficient, easy to apply, and will not alter the quality and sensory properties of shellfish. In the present study, both ozonation (15 mg kg(-1) for 6 h) and gamma-irradiation (6 kGy) were utilised in order to reduce the toxin content of contaminated shucked mussels, collected during the DSP episodes of 2007 and 2009 in Greece. DSP toxicity was monitored using the mouse bioassay (MBA) whilst the determination of toxin content of the okadaic acid (OA) group (both free and esterified forms) was carried out by LC/MS/MS analysis. Toxin reduction using gamma-irradiation was in the range of 12-36%, 8-53% and 10-41% for free OA, OA esters and total OA, respectively. The appearance and texture of irradiated mussels deteriorated, pointing to a low potential for commercial use of this method. Ozonation of mussels resulted in toxin reduction in the range of 6-100%, 25-83% and 21-66% for free OA, OA esters and total OA, respectively. Reduction of OA content was substantially higher in homogenised mussel tissue compared with that of whole shucked mussels. In addition, differences detected with regard to quality parameters (TBA, sensory attributes) between ozonated and control mussels were not considerable. Even though varying percentage reductions in OA and its derivatives were achieved using ozonation under specific experimental conditions tested, it is postulated that upon optimisation ozonation may have the potential for post-harvest commercial DSP detoxification of shucked mussels.en
heal.accesscampus-
heal.fullTextAvailabilityTRUE-
heal.identifier.primaryDoi 10.1080/19440049.2011.603365-
heal.identifier.secondary<Go to ISI>://000298286300013-
heal.identifier.secondaryhttp://www.tandfonline.com/doi/pdf/10.1080/19440049.2011.603365-
heal.journalNameFood Additives and Contaminants Part a-Chemistry Analysis Control Exposure & Risk Assessmenten
heal.journalTypepeer reviewed-
heal.languageen-
heal.publicationDate2011-
heal.publisherTaylor & Francisen
heal.recordProviderΠανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείαςel
heal.typejournalArticle-
heal.type.elΆρθρο Περιοδικούel
heal.type.enJournal articleen

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