Evaluation of minimally processed salads commercialized in Portugal

Detalhes bibliográficos
Autor(a) principal: Santos, M.I.
Data de Publicação: 2012
Outros Autores: Cavaco, A., Gouveia, J., Novais, M.R., Nogueira, P.J., Pedroso, L., Ferreira, M.A.S.S.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.5/4281
Resumo: Available at ScienceDirect
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spelling Evaluation of minimally processed salads commercialized in Portugalminimally processed saladsbacterial pathogenssensory analysisquality evaluationAvailable at ScienceDirectDuring the last decades food borne outbreaks associated with consumption of raw vegetables have been increasing and green leafy vegetables seem to be the most frequently implicated products. In order to determine the microbial quality and the incidence of the major food borne pathogens in Minimally Processed (MP) salads commercialized in Portugal, a survey was conducted in Lisbon Retail Markets, from July 2007 to August 2008, to determine microbial contamination loads and identify potential pathogenic bacteria. A total of 151 samples were purchased from 2 supermarkets: 38 romaine lettuce, 12 various spinach and 101 mixed salads with three or four different ingredients. The samples were tested for aerobic psychotropic micro-organisms (APM), Enterobacteriaceae, Escherichia coli, Listeria spp., presumptive Bacillus cereus, Aeromonas hydrophila and Clostridium perfringens counts as well as for presence of Salmonella spp., Listeria monocytogenes and E. coli O157. Samples were also evaluated for taste quality. The results showed that APM counts of romaine lettuce and mixed salads had a similar median, respectively, 6.2 and 6.5 log cfu/g and mixed spinach had the highest one (7.6 log cfu/g). The median value found for Enterobacteriaceae was 5.44 log cfu/g. Only four samples showed positive result for E. coli (2.65%) but just one (0.8%) had a slightly higher load of contamination. Although the percentage and levels of contamination loads were low, these mustn’t be ignored, for the reason that the strains in three of the samples belong to VTEC group (1.99%). E. coli O157, Salmonella spp. and C. perfringens weren’t detected in any sample. For the enumeration of Listeria spp., two samples (1.32%) had presence of Listeria innocua and L. monocytogenes had an incidence of 0.66%. A. hydrophila was identified in 11 samples (7.28%), and in 8 of them with considerable counts (>105). Contamination with B. cereus was found in 22.7% of samples analyzed, though in small numbers, which doesn’t represent a major concern to food safety. All isolated strains were assessed for its potential toxin production and it was found that 40% of these strains had this ability. Results from sensory panel showed organoleptic differences in salads during its shelf-life periodElsevierRepositório da Universidade de LisboaSantos, M.I.Cavaco, A.Gouveia, J.Novais, M.R.Nogueira, P.J.Pedroso, L.Ferreira, M.A.S.S.2012-04-26T10:21:17Z20122012-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.5/4281eng"Food Control". ISSN 0956-7135. 23 (2012) 275-2810965-7135info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-03-06T14:35:17Zoai:www.repository.utl.pt:10400.5/4281Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T16:51:58.748867Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Evaluation of minimally processed salads commercialized in Portugal
title Evaluation of minimally processed salads commercialized in Portugal
spellingShingle Evaluation of minimally processed salads commercialized in Portugal
Santos, M.I.
minimally processed salads
bacterial pathogens
sensory analysis
quality evaluation
title_short Evaluation of minimally processed salads commercialized in Portugal
title_full Evaluation of minimally processed salads commercialized in Portugal
title_fullStr Evaluation of minimally processed salads commercialized in Portugal
title_full_unstemmed Evaluation of minimally processed salads commercialized in Portugal
title_sort Evaluation of minimally processed salads commercialized in Portugal
author Santos, M.I.
author_facet Santos, M.I.
Cavaco, A.
Gouveia, J.
Novais, M.R.
Nogueira, P.J.
Pedroso, L.
Ferreira, M.A.S.S.
author_role author
author2 Cavaco, A.
Gouveia, J.
Novais, M.R.
Nogueira, P.J.
Pedroso, L.
Ferreira, M.A.S.S.
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Repositório da Universidade de Lisboa
dc.contributor.author.fl_str_mv Santos, M.I.
Cavaco, A.
Gouveia, J.
Novais, M.R.
Nogueira, P.J.
Pedroso, L.
Ferreira, M.A.S.S.
dc.subject.por.fl_str_mv minimally processed salads
bacterial pathogens
sensory analysis
quality evaluation
topic minimally processed salads
bacterial pathogens
sensory analysis
quality evaluation
description Available at ScienceDirect
publishDate 2012
dc.date.none.fl_str_mv 2012-04-26T10:21:17Z
2012
2012-01-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.5/4281
url http://hdl.handle.net/10400.5/4281
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv "Food Control". ISSN 0956-7135. 23 (2012) 275-281
0965-7135
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
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repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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