Microbiological quality of marketed ricotta cheese and disease risks associated with Listeria monocytogenes contamination

Bibliographic Details
Main Author: Esper, Luciana Maria Ramires
Publication Date: 2011
Other Authors: Kabuki, Dirce Yorika, Kuaye, Arnaldo Yoshiteru
Format: Article
Language: por
Source: Revista do Instituto Adolfo Lutz (Online)
Download full: https://periodicos.saude.sp.gov.br/RIAL/article/view/32514
Summary: The present study aimed at evaluating the quality of ricotta cheeses marketed in the region of Campinas, SP, and to characterize the pathogenic potential of the isolated Listeria monocytogenes strains. Of 45 analyzed samples, 46.7% (21/45) did not comply with the Brazilian microbiological standard established. Most of the evaluated samples showed the microorganisms counts above those established by the regulation, that is, 46.7% for thermotolerant coliforms, 2.2% for coagulase-positive staphylococci, and 6.7% for Listeria monocytogenes. No Salmonella was isolated from these samples. It was evidenced the ocurrence of Listeria monocytogenes strains, with virulence genes acta type 4 and hly type 1, and classified as lineage I, which indicate the pathogenic potential for human. This study evidenced that this class of product deserves more attention from the scientific community, and also from manufacturing sector and sanitary surveillance bureau, improving the products quality, and consequently the consumer safety.
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spelling Microbiological quality of marketed ricotta cheese and disease risks associated with Listeria monocytogenes contaminationQualidade microbiológica de ricotas comerciais e os riscos associados à presença de Listeria monocytogenesricotta cheeseMicrobiological qualityListeria monocytogenesVirulence genesPCRricotaqualidade microbiológicaListeria monocytogenesgenes de virulência e PCRThe present study aimed at evaluating the quality of ricotta cheeses marketed in the region of Campinas, SP, and to characterize the pathogenic potential of the isolated Listeria monocytogenes strains. Of 45 analyzed samples, 46.7% (21/45) did not comply with the Brazilian microbiological standard established. Most of the evaluated samples showed the microorganisms counts above those established by the regulation, that is, 46.7% for thermotolerant coliforms, 2.2% for coagulase-positive staphylococci, and 6.7% for Listeria monocytogenes. No Salmonella was isolated from these samples. It was evidenced the ocurrence of Listeria monocytogenes strains, with virulence genes acta type 4 and hly type 1, and classified as lineage I, which indicate the pathogenic potential for human. This study evidenced that this class of product deserves more attention from the scientific community, and also from manufacturing sector and sanitary surveillance bureau, improving the products quality, and consequently the consumer safety.No presente estudo foi avaliada a qualidade microbiológica de ricotas comercializadas na região de Campinas-SP e caracterizado o potencial patogênico das cepas isoladas de Listeria monocytogenes. Um total de 45 amostras de ricota foi submetido às análises de contagens de coliformes termotolerantes, estafilococos coagulase positiva, bolores, leveduras e detecção de Salmonella sp. e Listeria monocytogenes. Os resultados apontaram que 46,7% (21/45) das ricotas estavam em desacordo com os padrões microbiológicos para alimentos estabelecidos pela Diretoria Colegiada da Agência Nacional de Vigilância Sanitária – Resolução RDC 12/2001. O número de amostras que apresentaram contagens acima das permitidas pela legislação em relação aos coliformes termotolerantes foi de 46,7% e em relação a estafilococos coagulase positiva foi de 2,2%, além de 6,7% das amostras apresentaram Listeria monocytogenes. Não foi isolada Salmonella das amostras analisadas. Destaca-se a presença de L. monocytogenes em 6,7% (3/45) das amostras com perfil genético actA tipo 4 e hly tipo 1 e pertencente à linhagem I, potencialmente patogênico ao homem. Este estudo indica que o produto analisado merece maior atenção por parte da comunidade científica, bem como pelo setor produtivo e órgãos de vigilância sanitária com o intuito de empreender a melhoria da qualidade e consequente, segurança ao consumidor.Instituto Adolfo Lutz2011-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionAvaliado pelos paresapplication/pdfhttps://periodicos.saude.sp.gov.br/RIAL/article/view/3251410.53393/rial.2011.v70.32514Instituto Adolfo Lutz Journal - RIAL; Vol. 70 No. 4 (2011); 554-559Revista del Instituto Adolfo Lutz - RIAL; Vol. 70 Núm. 4 (2011); 554-559Revista do Instituto Adolfo Lutz; v. 70 n. 4 (2011); 554-5591983-38140073-9855reponame:Revista do Instituto Adolfo Lutz (Online)instname:Instituto Adolfo Lutzinstacron:IALporhttps://periodicos.saude.sp.gov.br/RIAL/article/view/32514/31345Copyright (c) 2011 Luciana Maria Ramires Esper, Dirce Yorika Kabuki, Arnaldo Yoshiteru Kuayeinfo:eu-repo/semantics/openAccessEsper, Luciana Maria RamiresKabuki, Dirce YorikaKuaye, Arnaldo Yoshiteru2023-11-07T19:35:36Zoai:ojs.periodicos.saude.sp.gov.br:article/32514Revistahttps://periodicos.saude.sp.gov.br/RIAL/indexPUBhttps://periodicos.saude.sp.gov.br/RIAL/oairial@saude.sp.gov.brhttps://doi.org/10.53393/rial1983-38140073-9855opendoar:2023-11-07T19:35:36Revista do Instituto Adolfo Lutz (Online) - Instituto Adolfo Lutzfalse
dc.title.none.fl_str_mv Microbiological quality of marketed ricotta cheese and disease risks associated with Listeria monocytogenes contamination
Qualidade microbiológica de ricotas comerciais e os riscos associados à presença de Listeria monocytogenes
title Microbiological quality of marketed ricotta cheese and disease risks associated with Listeria monocytogenes contamination
spellingShingle Microbiological quality of marketed ricotta cheese and disease risks associated with Listeria monocytogenes contamination
Esper, Luciana Maria Ramires
ricotta cheese
Microbiological quality
Listeria monocytogenes
Virulence genes
PCR
ricota
qualidade microbiológica
Listeria monocytogenes
genes de virulência e PCR
title_short Microbiological quality of marketed ricotta cheese and disease risks associated with Listeria monocytogenes contamination
title_full Microbiological quality of marketed ricotta cheese and disease risks associated with Listeria monocytogenes contamination
title_fullStr Microbiological quality of marketed ricotta cheese and disease risks associated with Listeria monocytogenes contamination
title_full_unstemmed Microbiological quality of marketed ricotta cheese and disease risks associated with Listeria monocytogenes contamination
title_sort Microbiological quality of marketed ricotta cheese and disease risks associated with Listeria monocytogenes contamination
author Esper, Luciana Maria Ramires
author_facet Esper, Luciana Maria Ramires
Kabuki, Dirce Yorika
Kuaye, Arnaldo Yoshiteru
author_role author
author2 Kabuki, Dirce Yorika
Kuaye, Arnaldo Yoshiteru
author2_role author
author
dc.contributor.author.fl_str_mv Esper, Luciana Maria Ramires
Kabuki, Dirce Yorika
Kuaye, Arnaldo Yoshiteru
dc.subject.por.fl_str_mv ricotta cheese
Microbiological quality
Listeria monocytogenes
Virulence genes
PCR
ricota
qualidade microbiológica
Listeria monocytogenes
genes de virulência e PCR
topic ricotta cheese
Microbiological quality
Listeria monocytogenes
Virulence genes
PCR
ricota
qualidade microbiológica
Listeria monocytogenes
genes de virulência e PCR
description The present study aimed at evaluating the quality of ricotta cheeses marketed in the region of Campinas, SP, and to characterize the pathogenic potential of the isolated Listeria monocytogenes strains. Of 45 analyzed samples, 46.7% (21/45) did not comply with the Brazilian microbiological standard established. Most of the evaluated samples showed the microorganisms counts above those established by the regulation, that is, 46.7% for thermotolerant coliforms, 2.2% for coagulase-positive staphylococci, and 6.7% for Listeria monocytogenes. No Salmonella was isolated from these samples. It was evidenced the ocurrence of Listeria monocytogenes strains, with virulence genes acta type 4 and hly type 1, and classified as lineage I, which indicate the pathogenic potential for human. This study evidenced that this class of product deserves more attention from the scientific community, and also from manufacturing sector and sanitary surveillance bureau, improving the products quality, and consequently the consumer safety.
publishDate 2011
dc.date.none.fl_str_mv 2011-04-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Avaliado pelos pares
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://periodicos.saude.sp.gov.br/RIAL/article/view/32514
10.53393/rial.2011.v70.32514
url https://periodicos.saude.sp.gov.br/RIAL/article/view/32514
identifier_str_mv 10.53393/rial.2011.v70.32514
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://periodicos.saude.sp.gov.br/RIAL/article/view/32514/31345
dc.rights.driver.fl_str_mv Copyright (c) 2011 Luciana Maria Ramires Esper, Dirce Yorika Kabuki, Arnaldo Yoshiteru Kuaye
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2011 Luciana Maria Ramires Esper, Dirce Yorika Kabuki, Arnaldo Yoshiteru Kuaye
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Instituto Adolfo Lutz
publisher.none.fl_str_mv Instituto Adolfo Lutz
dc.source.none.fl_str_mv Instituto Adolfo Lutz Journal - RIAL; Vol. 70 No. 4 (2011); 554-559
Revista del Instituto Adolfo Lutz - RIAL; Vol. 70 Núm. 4 (2011); 554-559
Revista do Instituto Adolfo Lutz; v. 70 n. 4 (2011); 554-559
1983-3814
0073-9855
reponame:Revista do Instituto Adolfo Lutz (Online)
instname:Instituto Adolfo Lutz
instacron:IAL
instname_str Instituto Adolfo Lutz
instacron_str IAL
institution IAL
reponame_str Revista do Instituto Adolfo Lutz (Online)
collection Revista do Instituto Adolfo Lutz (Online)
repository.name.fl_str_mv Revista do Instituto Adolfo Lutz (Online) - Instituto Adolfo Lutz
repository.mail.fl_str_mv rial@saude.sp.gov.br
_version_ 1836991955776569344

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