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Evaluation of potential of gamma radiation as a conservation treatment for blackberry fruits

2013Journal article Open access
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authorProfile.affiliationInstituto Politécnico de Santarém, Escola Superior Agrária de Santarémpt_PT
dc.contributor.authorOliveira, M. M.
dc.contributor.authorPereira, J.
dc.contributor.authorCabo Verde, S.
dc.contributor.authorBasto de Lima, Maria Gabriela
dc.contributor.authorPinto, Paula
dc.contributor.authorOliveira, P.B.
dc.contributor.authorJunqueira, C.
dc.contributor.authorMarcos, H.
dc.contributor.authorSilva, T.
dc.contributor.authorMelo, R.
dc.contributor.authorSantos, C.N.
dc.contributor.authorBotelho, M. L.
dc.date.accessioned2015-10-08T11:49:00Z
dc.date.available2015-10-08T11:49:00Z
dc.date.issued2013
dc.description.abstractBACKGROUND: Blackberries consumption has been associated with health benefits. However, these fruits present a short shelf-life. Thus, food irradiation is a potential alternative technology for conservation of these fruits without use of chemicals. OBJECTIVE: Analyse the potentiality of gamma radiation as a decontamination method for blackberry fruits. METHODS: Fresh packed blackberries were irradiated in a Co-60 source at two doses (1.0 and 1.5 kGy). Bioburden, physical and rheological, sensorial and total soluble content parameters were assessed before irradiation, immediately after and at two days storage time at 4°C. RESULTS: The characterization of blackberries microbiota point out to an average bioburden value of 104 CFU/g and to a microbial population predominantly composed by filamentous fungi. The inactivation studies on the blackberries mesophilic population indicated a limited microbial inactivation (<1 log decimal reduction) for the applied radiation doses, being the surviving population mainly constituted by filamentous fungi and yeast. No effect of irradiation on colour of blackberries was observed. Concerning texture parameters, no significant differences were observed in both fracturability and firmness between non-irradiated and irradiated blackberries immediately after irradiation. In blackberries stored for two days, both parameters were slightly lower in irradiated blackberries, compared to non-irradiated blackberries. The performed sensorial analysis indicated a similar acceptability among irradiated and non-irradiated fruits. CONCLUSION: This work reveals gamma irradiation treatment potential since no major impact was detected on blackberries physical, rheological and sensory attributes. Further studies with longer periods of storage are needed to elucidate the advantages of irradiation as a conservation treatment.© 2013 - IOS Press and the authors. All rights reserved.pt_PT
dc.identifier.citationOliveira, M.; Pereira,J.; Cabo Verde,S.; Lima, M.G.; Pinto, P. P.; Oliveira,P.; Junqueira, C.; Marcos, H.; Silva,T.; Melo,R.; Santos, C. N. & Botelho, M. (2013). Evaluation of potential of gamma radiation as a conservation treatment for blackberry fruits. Journal of Berry Research, 3(2):93-102.pt_PT
dc.identifier.doi10.3233/JBR-130050
dc.identifier.issn1878-5093
dc.identifier.urihttp://hdl.handle.net/10400.15/1344
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherIOS Presspt_PT
dc.relation.publisherversionhttps://content.iospress.com/articles/journal-of-berry-research/jbr050pt_PT
dc.subjectBlackberriespt_PT
dc.subjectFood irradiationpt_PT
dc.subjectFood microbiologypt_PT
dc.subjectRheological propertiespt_PT
dc.subjectAmora pretapt_PT
dc.subjectIrradiação de alimentospt_PT
dc.subjectPropriedade reológicapt_PT
dc.titleEvaluation of potential of gamma radiation as a conservation treatment for blackberry fruitspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceAmsterdampt_PT
oaire.citation.endPage102pt_PT
oaire.citation.startPage93pt_PT
oaire.citation.titleJournal of Berry Researchpt_PT
oaire.citation.volume3pt_PT
person.familyNameBasto de Lima
person.familyNamePaula S F S Pinto
person.givenNameMaria Gabriela
person.givenNameMaria
person.identifier.ciencia-idA117-6A3B-3265
person.identifier.ciencia-id011F-62A8-AE04
person.identifier.orcid0000-0003-3938-6820
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication54027ed0-78d1-413a-9439-e251acea474a
relation.isAuthorOfPublication2260faef-53cb-403f-a0ea-637298da3dc7
relation.isAuthorOfPublication.latestForDiscovery54027ed0-78d1-413a-9439-e251acea474a

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