Sistema de apoio à decisão de gerenciamento de risco de Clostridium estertheticum, em matadouro-frigorífico de bovinos
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Tipo de documento: | Tese |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFG |
Texto Completo: | http://repositorio.bc.ufg.br/tede/handle/tde/1132 |
Resumo: | Abstract: Blown Pack is a process of spoilage which characterizes by the build-up of gas in the package of chilled meat cuts, causing a repulsing aspect. In Brazil, this spoilage has been described in many States, mainly meat for export, which needs longer shelf-life. The main cause of blown Pack is attributed to Clostridium estertheticum, a bacteria which multiplies easily in long-term storage at refrigeration temperatures and also in anaerobic organisms found in vacuum-packed chilled meat. The management of these bacteria in the flowchart of slaughter is very difficult due to its sporulated shape, easy dissemination and growth during the meat processing. Having said that, this work aimed to propose a decision support system for risk management for Clostridium estertheticum in the flowchart of bovine slaughter and vacuum-packed chilled beef cuts. Hence, it was carried out an identification of Control Point and Critical Point Control for bacteria as well as a risk classification and quantification in the process of vacuum-packed chilled beef cuts. The decision support system was based on the concept of Risk Assessment and Bayesian Networks. The system elaboration was performed at Shell Netica program. The probabilistic was manually input during the meeting with experts on the area. The first proposed structure of the system was elaborated for classification and quantification for microbiological risks, having as a parent node, a Risk Characterization of blown pack. The children nodes, linked to the parent node, were elaborated and based on Risk Exposure and Hazard Characterization for microbial deterioration in blown packed spoilage in meat cuts. In the second part of the proposition of the system, it was selected the slaughter operations and the determining factors of contamination in the processes. The parent nodes indentified the contamination risks and the children nodes the slaughter conditions. The system performance was assessed by specificity and sensibility. The proposed model presented a satisfactory performance, being reliable to the productive reality. The system presented high risk for blown pack for C. estertheticum, lactic acid bacteria and Enterobacteriaceae. Concerning its performance in identifying the contamination risk on the flowchart of slaughter, it has been high, with 100% of specificity and sensibility. The proposed model presented clear diagnosis, showing the operations that need more attention by the risk manager‟s part. |
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MESQUITA, Albenones José dehttp://lattes.cnpq.br/3180029815183858REZENDE, Cíntia Silva Minafra ehttp://lattes.cnpq.br/5841210447886226http://lattes.cnpq.br/5394555161430575MELO, Camila Silveira de2014-07-29T15:13:44Z2011-12-262011-10-07MELO, Camila Silveira de. Decision support system for risk management for Clostridium estertheticum bovine slaughterhouses. 2011. 122 f. Tese (Doutorado em Ciências Agrárias) - Universidade Federal de Goiás, Goiânia, 2011.http://repositorio.bc.ufg.br/tede/handle/tde/1132Abstract: Blown Pack is a process of spoilage which characterizes by the build-up of gas in the package of chilled meat cuts, causing a repulsing aspect. In Brazil, this spoilage has been described in many States, mainly meat for export, which needs longer shelf-life. The main cause of blown Pack is attributed to Clostridium estertheticum, a bacteria which multiplies easily in long-term storage at refrigeration temperatures and also in anaerobic organisms found in vacuum-packed chilled meat. The management of these bacteria in the flowchart of slaughter is very difficult due to its sporulated shape, easy dissemination and growth during the meat processing. Having said that, this work aimed to propose a decision support system for risk management for Clostridium estertheticum in the flowchart of bovine slaughter and vacuum-packed chilled beef cuts. Hence, it was carried out an identification of Control Point and Critical Point Control for bacteria as well as a risk classification and quantification in the process of vacuum-packed chilled beef cuts. The decision support system was based on the concept of Risk Assessment and Bayesian Networks. The system elaboration was performed at Shell Netica program. The probabilistic was manually input during the meeting with experts on the area. The first proposed structure of the system was elaborated for classification and quantification for microbiological risks, having as a parent node, a Risk Characterization of blown pack. The children nodes, linked to the parent node, were elaborated and based on Risk Exposure and Hazard Characterization for microbial deterioration in blown packed spoilage in meat cuts. In the second part of the proposition of the system, it was selected the slaughter operations and the determining factors of contamination in the processes. The parent nodes indentified the contamination risks and the children nodes the slaughter conditions. The system performance was assessed by specificity and sensibility. The proposed model presented a satisfactory performance, being reliable to the productive reality. The system presented high risk for blown pack for C. estertheticum, lactic acid bacteria and Enterobacteriaceae. Concerning its performance in identifying the contamination risk on the flowchart of slaughter, it has been high, with 100% of specificity and sensibility. The proposed model presented clear diagnosis, showing the operations that need more attention by the risk manager‟s part.O tufamento é um processo de deterioração que se caracteriza pelo acúmulo de gases no interior da embalagem de cortes cárneos, provocando aspecto repugnante. No Brasil, essa deterioração já foi observada em vários Estados, principalmente em lotes destinados a exportação, que necessitam de maior vida de prateleira. O principal causador do tufamento é o Clostridium estertheticum, uma bactéria que se multiplica com facilidade em temperaturas de refrigeração e em anaerobiose, sendo essas condições encontradas em carnes embaladas a vácuo. O gerenciamento dessa bactéria no fluxograma de abate é muito difícil devido à sua forma esporulada e facilidade de disseminação e crescimento durante o processamento da carne bovina. Diante do exposto, objetivou-se com o presente trabalho propor um sistema de apoio à decisão de gerenciamento de risco de Clostridium estertheticum, no fluxograma de abate de bovinos e em cortes cárneos embalados a vácuo. Para isso, foi realizada a identificação dos Pontos de Controle e Pontos Críticos de Controle para a bactéria, além da classificação e quantificação de riscos no processo de obtenção de cortes cárneos refrigerados embalados a vácuo. O sistema de apoio a decisão foi baseado no conceito de Avaliação de Risco e Redes Bayesianas. A elaboração do sistema foi realizada no programa Shell Netica, com as probabilidades inseridas de forma manual durante reuniões com especialista da área. A primeira estrutura do sistema proposto foi elaborada para classificação e quantificação de riscos microbiológicos, possuindo como nó pai a Caracterização do Risco de tufamento. Os nós filhos, ligados ao nó pai, foram elaborados com base na Exposição de Risco e Caracterização de Perigo para deteriorantes incriminados em tufamento de cortes cárneos. Na proposição da segunda parte do sistema, foram elencadas as operações de abate e os fatores determinantes da contaminação dos processos, assim sendo, os nós pais identificaram o risco de contaminação e os nós filhos as condições de abate. O desempenho do sistema foi avaliado por meio da especificidade e sensibilidade. O modelo proposto apresentou desempenho satisfatório, sendo fidedigno à realidade produtiva. O sistema apresentou alto risco de tufamento para C. estertheticum, bactérias ácido láticas e Enterobacteriaceae. Quanto ao seu desempenho em identificar risco de contaminação no fluxograma de abate, esse se mostrou elevado, com 100% de especificidade e sensibilidade. O modelo proposto apresentou diagnósticos claros, apontando as operações que necessitam de maior atenção por parte do gestor de riscos.Made available in DSpace on 2014-07-29T15:13:44Z (GMT). No. of bitstreams: 1 Tese Camila Silveira de Melo.pdf: 1600630 bytes, checksum: 775f7bf932366a49562642895c0c3764 (MD5) Previous issue date: 2011-10-07application/pdfhttp://repositorio.bc.ufg.br/TEDE/retrieve/4009/Tese%20Camila%20Silveira%20de%20Melo.pdf.jpgporUniversidade Federal de GoiásDoutorado em Ciência AnimalUFGBRCiências AgráriasAvaliação de riscoRedes bayesianasTufamento1. Sistema especialista probabilístico; 2. Avaliação de risco deteriorantes da carne; 3. Abate de bovinosBayesian networkBlown packRisk AssessmentCNPQ::CIENCIAS AGRARIAS::MEDICINA VETERINARIASistema de apoio à decisão de gerenciamento de risco de Clostridium estertheticum, em matadouro-frigorífico de bovinosDecision support system for risk management for Clostridium estertheticum bovine slaughterhousesinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFGinstname:Universidade Federal de Goiás (UFG)instacron:UFGORIGINALTese Camila Silveira de Melo.pdfapplication/pdf1600630http://repositorio.bc.ufg.br/tede/bitstreams/c2a26e5f-f423-41ba-ad12-1ea2b867095f/download775f7bf932366a49562642895c0c3764MD51THUMBNAILTese Camila Silveira de Melo.pdf.jpgTese Camila Silveira de Melo.pdf.jpgGenerated Thumbnailimage/jpeg1943http://repositorio.bc.ufg.br/tede/bitstreams/9062b008-b1fc-4b0d-8495-216accb8f858/downloadcc73c4c239a4c332d642ba1e7c7a9fb2MD52tde/11322014-07-30 03:10:03.74open.accessoai:repositorio.bc.ufg.br:tde/1132http://repositorio.bc.ufg.br/tedeRepositório InstitucionalPUBhttp://repositorio.bc.ufg.br/oai/requesttasesdissertacoes.bc@ufg.bropendoar:2014-07-30T06:10:03Repositório Institucional da UFG - Universidade Federal de Goiás (UFG)false |
dc.title.por.fl_str_mv |
Sistema de apoio à decisão de gerenciamento de risco de Clostridium estertheticum, em matadouro-frigorífico de bovinos |
dc.title.alternative.eng.fl_str_mv |
Decision support system for risk management for Clostridium estertheticum bovine slaughterhouses |
title |
Sistema de apoio à decisão de gerenciamento de risco de Clostridium estertheticum, em matadouro-frigorífico de bovinos |
spellingShingle |
Sistema de apoio à decisão de gerenciamento de risco de Clostridium estertheticum, em matadouro-frigorífico de bovinos MELO, Camila Silveira de Avaliação de risco Redes bayesianas Tufamento 1. Sistema especialista probabilístico; 2. Avaliação de risco deteriorantes da carne; 3. Abate de bovinos Bayesian network Blown pack Risk Assessment CNPQ::CIENCIAS AGRARIAS::MEDICINA VETERINARIA |
title_short |
Sistema de apoio à decisão de gerenciamento de risco de Clostridium estertheticum, em matadouro-frigorífico de bovinos |
title_full |
Sistema de apoio à decisão de gerenciamento de risco de Clostridium estertheticum, em matadouro-frigorífico de bovinos |
title_fullStr |
Sistema de apoio à decisão de gerenciamento de risco de Clostridium estertheticum, em matadouro-frigorífico de bovinos |
title_full_unstemmed |
Sistema de apoio à decisão de gerenciamento de risco de Clostridium estertheticum, em matadouro-frigorífico de bovinos |
title_sort |
Sistema de apoio à decisão de gerenciamento de risco de Clostridium estertheticum, em matadouro-frigorífico de bovinos |
author |
MELO, Camila Silveira de |
author_facet |
MELO, Camila Silveira de |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
MESQUITA, Albenones José de |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/3180029815183858 |
dc.contributor.advisor-co1.fl_str_mv |
REZENDE, Cíntia Silva Minafra e |
dc.contributor.advisor-co1Lattes.fl_str_mv |
http://lattes.cnpq.br/5841210447886226 |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/5394555161430575 |
dc.contributor.author.fl_str_mv |
MELO, Camila Silveira de |
contributor_str_mv |
MESQUITA, Albenones José de REZENDE, Cíntia Silva Minafra e |
dc.subject.por.fl_str_mv |
Avaliação de risco Redes bayesianas Tufamento 1. Sistema especialista probabilístico; 2. Avaliação de risco deteriorantes da carne; 3. Abate de bovinos |
topic |
Avaliação de risco Redes bayesianas Tufamento 1. Sistema especialista probabilístico; 2. Avaliação de risco deteriorantes da carne; 3. Abate de bovinos Bayesian network Blown pack Risk Assessment CNPQ::CIENCIAS AGRARIAS::MEDICINA VETERINARIA |
dc.subject.eng.fl_str_mv |
Bayesian network Blown pack Risk Assessment |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS AGRARIAS::MEDICINA VETERINARIA |
description |
Abstract: Blown Pack is a process of spoilage which characterizes by the build-up of gas in the package of chilled meat cuts, causing a repulsing aspect. In Brazil, this spoilage has been described in many States, mainly meat for export, which needs longer shelf-life. The main cause of blown Pack is attributed to Clostridium estertheticum, a bacteria which multiplies easily in long-term storage at refrigeration temperatures and also in anaerobic organisms found in vacuum-packed chilled meat. The management of these bacteria in the flowchart of slaughter is very difficult due to its sporulated shape, easy dissemination and growth during the meat processing. Having said that, this work aimed to propose a decision support system for risk management for Clostridium estertheticum in the flowchart of bovine slaughter and vacuum-packed chilled beef cuts. Hence, it was carried out an identification of Control Point and Critical Point Control for bacteria as well as a risk classification and quantification in the process of vacuum-packed chilled beef cuts. The decision support system was based on the concept of Risk Assessment and Bayesian Networks. The system elaboration was performed at Shell Netica program. The probabilistic was manually input during the meeting with experts on the area. The first proposed structure of the system was elaborated for classification and quantification for microbiological risks, having as a parent node, a Risk Characterization of blown pack. The children nodes, linked to the parent node, were elaborated and based on Risk Exposure and Hazard Characterization for microbial deterioration in blown packed spoilage in meat cuts. In the second part of the proposition of the system, it was selected the slaughter operations and the determining factors of contamination in the processes. The parent nodes indentified the contamination risks and the children nodes the slaughter conditions. The system performance was assessed by specificity and sensibility. The proposed model presented a satisfactory performance, being reliable to the productive reality. The system presented high risk for blown pack for C. estertheticum, lactic acid bacteria and Enterobacteriaceae. Concerning its performance in identifying the contamination risk on the flowchart of slaughter, it has been high, with 100% of specificity and sensibility. The proposed model presented clear diagnosis, showing the operations that need more attention by the risk manager‟s part. |
publishDate |
2011 |
dc.date.available.fl_str_mv |
2011-12-26 |
dc.date.issued.fl_str_mv |
2011-10-07 |
dc.date.accessioned.fl_str_mv |
2014-07-29T15:13:44Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
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doctoralThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
MELO, Camila Silveira de. Decision support system for risk management for Clostridium estertheticum bovine slaughterhouses. 2011. 122 f. Tese (Doutorado em Ciências Agrárias) - Universidade Federal de Goiás, Goiânia, 2011. |
dc.identifier.uri.fl_str_mv |
http://repositorio.bc.ufg.br/tede/handle/tde/1132 |
identifier_str_mv |
MELO, Camila Silveira de. Decision support system for risk management for Clostridium estertheticum bovine slaughterhouses. 2011. 122 f. Tese (Doutorado em Ciências Agrárias) - Universidade Federal de Goiás, Goiânia, 2011. |
url |
http://repositorio.bc.ufg.br/tede/handle/tde/1132 |
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por |
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Universidade Federal de Goiás |
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Doutorado em Ciência Animal |
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UFG |
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BR |
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Ciências Agrárias |
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Universidade Federal de Goiás |
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