Pesquisa de Staphylococcus coagulase negativa em utensílios e queijos mussarela fatiados comercializados em Garanhuns-PE e sua capacidade de formar biofilme
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Biblioteca Digital de Teses e Dissertações da UFRPE |
Texto Completo: | http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/8144 |
Resumo: | Coagulase-negative Staphylococci (CNS) are bacteria found in animal products as contaminants, and also capable of producing biofilms. The objective of this study was to identify CNS species in sliced mozzarella cheeses and cold-cut slicers from bakeries, markets and mini-markets of the city of Garanhuns-PE. Moreover, investigate the ability to form biofilms and the presence of enterotoxin genes sea, seb, sec and sed in the isolated bacteria. Nine bacterial species were identified from a total of 85 CNS isolates, with the most frequent being Staphylococcus (S.) saprophyticus 22 (25.9%), S. xylosus 14 (16.5%) and S. cohnii subsp. urealyticum 7 (8,2%). There was no significant difference between the species found in the samples of Mozzarella cheese and on the surfaces of cold-cut slicers. Of these, 41 (48.2%) were biofilm producers and 44 (51.8%) did not produce biofilms, with the highest detection frequency in S. saprophyticus and S. cohnii subsp. urealyticum. The biofilm producers were also classified as weak producers (61.0%), moderate producers (22.0%) and strong producers (17.0%). Regarding of sea, seb, sec and sed genes, enterotoxin encoders of SEA, SEB, SEC and SED respectively, the presence of these genes was not detected in the isolates. Even with the absence of enterotoxin encoding genes in CNS isolates, these species constitute an important epidemiological source, as they had high counts in the samples, indicating a poor microbiological quality, once they are considered indicators of contamination, it were able to produce biofilms. In addition, several authors have documented the presence of enterotoxin genes in this group of microorganisms. Thus, it can be concluded that the Mozzarella cheeses and the cold-cut slicers of this study were contaminated with CNS producing biofilms and did not carry the classical enterotoxin genes studied. However, the needed to apply good handling and hygiene practices is emphasized, since this bacterial group is an important indicator of the food quality. |
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MEDEIROS, Elizabeth Sampaio deMENDONÇA, MarceloMEDEIROS, Elizabeth Sampaio deMENDONÇA, MarceloSILVA, Elizabete Rodrigues dahttp://lattes.cnpq.br/0013339049357627LEITE, Ana Erundina de Luna Moraes2019-07-12T13:11:58Z2019-02-25LEITE, Ana Erundina de Luna Moraes. Pesquisa de Staphylococcus coagulase negativa em utensílios e queijos mussarela fatiados comercializados em Garanhuns-PE e sua capacidade de formar biofilme. 2019. 51 f. Dissertação (Programa de Pós-Graduação em Biociência Animal) - Universidade Federal Rural de Pernambuco, Recife.http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/8144Coagulase-negative Staphylococci (CNS) are bacteria found in animal products as contaminants, and also capable of producing biofilms. The objective of this study was to identify CNS species in sliced mozzarella cheeses and cold-cut slicers from bakeries, markets and mini-markets of the city of Garanhuns-PE. Moreover, investigate the ability to form biofilms and the presence of enterotoxin genes sea, seb, sec and sed in the isolated bacteria. Nine bacterial species were identified from a total of 85 CNS isolates, with the most frequent being Staphylococcus (S.) saprophyticus 22 (25.9%), S. xylosus 14 (16.5%) and S. cohnii subsp. urealyticum 7 (8,2%). There was no significant difference between the species found in the samples of Mozzarella cheese and on the surfaces of cold-cut slicers. Of these, 41 (48.2%) were biofilm producers and 44 (51.8%) did not produce biofilms, with the highest detection frequency in S. saprophyticus and S. cohnii subsp. urealyticum. The biofilm producers were also classified as weak producers (61.0%), moderate producers (22.0%) and strong producers (17.0%). Regarding of sea, seb, sec and sed genes, enterotoxin encoders of SEA, SEB, SEC and SED respectively, the presence of these genes was not detected in the isolates. Even with the absence of enterotoxin encoding genes in CNS isolates, these species constitute an important epidemiological source, as they had high counts in the samples, indicating a poor microbiological quality, once they are considered indicators of contamination, it were able to produce biofilms. In addition, several authors have documented the presence of enterotoxin genes in this group of microorganisms. Thus, it can be concluded that the Mozzarella cheeses and the cold-cut slicers of this study were contaminated with CNS producing biofilms and did not carry the classical enterotoxin genes studied. However, the needed to apply good handling and hygiene practices is emphasized, since this bacterial group is an important indicator of the food quality.Staphylococcus coagulase negativa (SCN) são bactérias encontradas em produtos de origem animal como contaminantes, capazes de produzir biofilmes e também enterotoxinas. O objetivo deste estudo foi investigar a presença dos genes de enterotoxinas sea, seb, sec e sed e a capacidade de formar biofilmes por isolados de Staphylococcus coagulase negativa em queijos Mussarela fatiados e fatiador de frios provenientes de panificadoras, mercados e minimercados da cidade de Garanhuns-PE. De um total de 85 isolados de SCN foram identificadas nove espécies bacterianas, sendo as mais frequentes: Staphylococcus (S.) saprophyticus 22 (25,9%), S. xylosus 14 (16,5%) e S. cohnii subsp. urealyticum 7 (8,2%). Não houve diferença significativa entre as espécies encontradas nas amostras de queijo Mussarela e nas superfícies dos fatiadores de frios. Desse total, 41 (48,2%) foram produtores de biofilme e 44 (51,8%) não produziram biofilme, com a maior frequência de detecção nas espécies S. saprophyticus e S. cohnii subsp. urealyticum. Os produtores de biofilme foram ainda, classificados como fraco produtores (61,0%), moderado produtores (22,0%) e forte produtores (17,0%). Quanto à presença de genes sea, seb, sec e sed, codificadores para enterotoxinas SEA, SEB, SEC e SED, respectivamente, em nenhum isolado foi detectada a presença destes genes. Mesmo com a ausência dos genes codificadores para enterotoxinas pesquisados nos isolados de SCN, estas espécies constituem importante fonte epidemiológica, pois além de apresentarem altas contagens nas amostras, o que indica uma má qualidade microbiológica, uma vez que são indicadores de contaminação, foram capazes de produzir biofilmes. Além disso, diferentes autores têm documentado a presença de genes para enterotoxinas nesse grupo de microrganismos. Assim pode-se concluir que os queijos Mussarela e os fatiadores de frios alvos deste estudo, estavam contaminados com SCN produtores de biofilme e que não possuem a presença dos genes de enterotoxinas clássicas estudadas. Entretanto ressalta-se a necessidade da aplicação de boas práticas de manipulação e higienização, uma vez que esse grupo bacteriano é um importante indicador da qualidade dos alimentos.Submitted by Mario BC (mario@bc.ufrpe.br) on 2019-07-12T13:11:58Z No. of bitstreams: 1 Ana Erundina de Luna Moraes Leite.pdf: 1051556 bytes, checksum: 6c214d2c9076d27785c883152be351cf (MD5)Made available in DSpace on 2019-07-12T13:11:58Z (GMT). No. of bitstreams: 1 Ana Erundina de Luna Moraes Leite.pdf: 1051556 bytes, checksum: 6c214d2c9076d27785c883152be351cf (MD5) Previous issue date: 2019-02-25application/pdfporUniversidade Federal Rural de PernambucoPrograma de Pós-Graduação em Biociência AnimalUFRPEBrasilDepartamento de Morfologia e Fisiologia AnimalStaphylococcusContaminação de alimentoQueijo mussarelaCIENCIAS AGRARIAS::MEDICINA VETERINARIAPesquisa de Staphylococcus coagulase negativa em utensílios e queijos mussarela fatiados comercializados em Garanhuns-PE e sua capacidade de formar biofilmeinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesis-1510757014399315592600600600-8922364187987396204453670264235017319info:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações da UFRPEinstname:Universidade Federal Rural de Pernambuco (UFRPE)instacron:UFRPEORIGINALAna Erundina de Luna Moraes Leite.pdfAna Erundina de Luna Moraes Leite.pdfapplication/pdf1051556http://www.tede2.ufrpe.br:8080/tede2/bitstream/tede2/8144/2/Ana+Erundina+de+Luna+Moraes+Leite.pdf6c214d2c9076d27785c883152be351cfMD52LICENSElicense.txtlicense.txttext/plain; charset=utf-82165http://www.tede2.ufrpe.br:8080/tede2/bitstream/tede2/8144/1/license.txtbd3efa91386c1718a7f26a329fdcb468MD51tede2/81442019-07-12 10:11:58.133oai:tede2: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Biblioteca Digital de Teses e Dissertaçõeshttp://www.tede2.ufrpe.br:8080/tede/PUBhttp://www.tede2.ufrpe.br:8080/oai/requestbdtd@ufrpe.br ||bdtd@ufrpe.bropendoar:2019-07-12T13:11:58Biblioteca Digital de Teses e Dissertações da UFRPE - Universidade Federal Rural de Pernambuco (UFRPE)false |
dc.title.por.fl_str_mv |
Pesquisa de Staphylococcus coagulase negativa em utensílios e queijos mussarela fatiados comercializados em Garanhuns-PE e sua capacidade de formar biofilme |
title |
Pesquisa de Staphylococcus coagulase negativa em utensílios e queijos mussarela fatiados comercializados em Garanhuns-PE e sua capacidade de formar biofilme |
spellingShingle |
Pesquisa de Staphylococcus coagulase negativa em utensílios e queijos mussarela fatiados comercializados em Garanhuns-PE e sua capacidade de formar biofilme LEITE, Ana Erundina de Luna Moraes Staphylococcus Contaminação de alimento Queijo mussarela CIENCIAS AGRARIAS::MEDICINA VETERINARIA |
title_short |
Pesquisa de Staphylococcus coagulase negativa em utensílios e queijos mussarela fatiados comercializados em Garanhuns-PE e sua capacidade de formar biofilme |
title_full |
Pesquisa de Staphylococcus coagulase negativa em utensílios e queijos mussarela fatiados comercializados em Garanhuns-PE e sua capacidade de formar biofilme |
title_fullStr |
Pesquisa de Staphylococcus coagulase negativa em utensílios e queijos mussarela fatiados comercializados em Garanhuns-PE e sua capacidade de formar biofilme |
title_full_unstemmed |
Pesquisa de Staphylococcus coagulase negativa em utensílios e queijos mussarela fatiados comercializados em Garanhuns-PE e sua capacidade de formar biofilme |
title_sort |
Pesquisa de Staphylococcus coagulase negativa em utensílios e queijos mussarela fatiados comercializados em Garanhuns-PE e sua capacidade de formar biofilme |
author |
LEITE, Ana Erundina de Luna Moraes |
author_facet |
LEITE, Ana Erundina de Luna Moraes |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
MEDEIROS, Elizabeth Sampaio de |
dc.contributor.advisor-co1.fl_str_mv |
MENDONÇA, Marcelo |
dc.contributor.referee1.fl_str_mv |
MEDEIROS, Elizabeth Sampaio de |
dc.contributor.referee2.fl_str_mv |
MENDONÇA, Marcelo |
dc.contributor.referee3.fl_str_mv |
SILVA, Elizabete Rodrigues da |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/0013339049357627 |
dc.contributor.author.fl_str_mv |
LEITE, Ana Erundina de Luna Moraes |
contributor_str_mv |
MEDEIROS, Elizabeth Sampaio de MENDONÇA, Marcelo MEDEIROS, Elizabeth Sampaio de MENDONÇA, Marcelo SILVA, Elizabete Rodrigues da |
dc.subject.por.fl_str_mv |
Staphylococcus Contaminação de alimento Queijo mussarela |
topic |
Staphylococcus Contaminação de alimento Queijo mussarela CIENCIAS AGRARIAS::MEDICINA VETERINARIA |
dc.subject.cnpq.fl_str_mv |
CIENCIAS AGRARIAS::MEDICINA VETERINARIA |
description |
Coagulase-negative Staphylococci (CNS) are bacteria found in animal products as contaminants, and also capable of producing biofilms. The objective of this study was to identify CNS species in sliced mozzarella cheeses and cold-cut slicers from bakeries, markets and mini-markets of the city of Garanhuns-PE. Moreover, investigate the ability to form biofilms and the presence of enterotoxin genes sea, seb, sec and sed in the isolated bacteria. Nine bacterial species were identified from a total of 85 CNS isolates, with the most frequent being Staphylococcus (S.) saprophyticus 22 (25.9%), S. xylosus 14 (16.5%) and S. cohnii subsp. urealyticum 7 (8,2%). There was no significant difference between the species found in the samples of Mozzarella cheese and on the surfaces of cold-cut slicers. Of these, 41 (48.2%) were biofilm producers and 44 (51.8%) did not produce biofilms, with the highest detection frequency in S. saprophyticus and S. cohnii subsp. urealyticum. The biofilm producers were also classified as weak producers (61.0%), moderate producers (22.0%) and strong producers (17.0%). Regarding of sea, seb, sec and sed genes, enterotoxin encoders of SEA, SEB, SEC and SED respectively, the presence of these genes was not detected in the isolates. Even with the absence of enterotoxin encoding genes in CNS isolates, these species constitute an important epidemiological source, as they had high counts in the samples, indicating a poor microbiological quality, once they are considered indicators of contamination, it were able to produce biofilms. In addition, several authors have documented the presence of enterotoxin genes in this group of microorganisms. Thus, it can be concluded that the Mozzarella cheeses and the cold-cut slicers of this study were contaminated with CNS producing biofilms and did not carry the classical enterotoxin genes studied. However, the needed to apply good handling and hygiene practices is emphasized, since this bacterial group is an important indicator of the food quality. |
publishDate |
2019 |
dc.date.accessioned.fl_str_mv |
2019-07-12T13:11:58Z |
dc.date.issued.fl_str_mv |
2019-02-25 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
LEITE, Ana Erundina de Luna Moraes. Pesquisa de Staphylococcus coagulase negativa em utensílios e queijos mussarela fatiados comercializados em Garanhuns-PE e sua capacidade de formar biofilme. 2019. 51 f. Dissertação (Programa de Pós-Graduação em Biociência Animal) - Universidade Federal Rural de Pernambuco, Recife. |
dc.identifier.uri.fl_str_mv |
http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/8144 |
identifier_str_mv |
LEITE, Ana Erundina de Luna Moraes. Pesquisa de Staphylococcus coagulase negativa em utensílios e queijos mussarela fatiados comercializados em Garanhuns-PE e sua capacidade de formar biofilme. 2019. 51 f. Dissertação (Programa de Pós-Graduação em Biociência Animal) - Universidade Federal Rural de Pernambuco, Recife. |
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http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/8144 |
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por |
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por |
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openAccess |
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Universidade Federal Rural de Pernambuco |
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Programa de Pós-Graduação em Biociência Animal |
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UFRPE |
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Brasil |
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Departamento de Morfologia e Fisiologia Animal |
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Universidade Federal Rural de Pernambuco |
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