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Microbiological evaluation of berries and identification of target microorganisms

2017-11Conference object Open access
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dc.contributor.authorOliveira, Márcia
dc.contributor.authorBrandão, Teresa R. S.
dc.contributor.authorHogg, M. Conceição
dc.contributor.authorPintado, Manuela
dc.contributor.authorTeixeira, Paula
dc.date.accessioned2021-06-23T15:11:06Z
dc.date.available2021-06-23T15:11:06Z
dc.date.issued2017-11
dc.description.abstractOne of the main challenges in food production is to improve competitiveness by identifying innovations which comply with safety policies and regulations, and guarantee food safety, while at the same time meeting general consumer demands. Consumer expectations are sometimes contradictory. While consumers demand microbiologically safe products with longer shelf-life, they also demand products free from or low in chemical preservatives and of high nutritional and sensory characteristics. The objective of this work, enclosed in the general objective within the framework of the national project Safety Fuit, was to evaluate the microbiological quality of raw materials used in in fruit processing by a Portuguese company. The results obtained will allow this company to set target microorganisms that must be controlled during processing. In this context, several samples of strawberry, blueberry, raspberry and blackberry were anaysed. Microorganisms were detected and/or enumerated and subsequently identified by ISO standard methods and rRNA sequencing. The following parameters were investigated: aerobic mesophilic microorganisms, yeasts and moulds, mesophilic and thermophilic spore forming bacteria, Escherichia coli, Salmonellaspp., Listeria monocytogenes, Bacillus cereus, sulfite-reducing clostridia and Staphylococcus aureus. Results showed that none of the samples were positive forE. coli, L. monocytogenes and S.aureus. However, some positive samples for Salmonellaspp. and sulfite-reducing clostria were observed. Hemolytic B. cereus was also observed, but only three samples (raspberry) presented counts higher than 2 log. Identification of the isolates by rRNA sequencing is ongoing.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.urihttp://hdl.handle.net/10400.14/33893
dc.language.isoengpt_PT
dc.peerreviewednopt_PT
dc.titleMicrobiological evaluation of berries and identification of target microorganismspt_PT
dc.typeconference object
dspace.entity.typePublication
person.familyNameBrandão
person.familyNamePintado
person.familyNameTeixeira
person.givenNameTeresa
person.givenNameMaria Manuela
person.givenNamePaula
person.identifierJ-9418-2012
person.identifier456608
person.identifier.ciencia-id7B19-E23B-BB31
person.identifier.ciencia-id2F13-AAE0-3405
person.identifier.orcid0000-0002-8857-6471
person.identifier.orcid0000-0002-0760-3184
person.identifier.orcid0000-0002-6296-5137
person.identifier.ridJ-9418-2012
person.identifier.ridF-5696-2013
person.identifier.ridJ-8678-2014
person.identifier.scopus-author-id6602174128
person.identifier.scopus-author-id7004483898
person.identifier.scopus-author-id7005895206
rcaap.rightsopenAccesspt_PT
rcaap.typeconferenceObjectpt_PT
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relation.isAuthorOfPublicationba387c7d-27c9-4016-895c-b35597e91ebc
relation.isAuthorOfPublicationb918d4a2-b9f9-4c56-8318-111625e4d58b
relation.isAuthorOfPublication.latestForDiscoveryba387c7d-27c9-4016-895c-b35597e91ebc

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