Improving the quality and extending the shelf-life of fresh-cut mushrooms

Detalhes bibliográficos
Autor(a) principal: Gonçalves, Francisco José Fonseca
Data de Publicação: 2019
Tipo de documento: Dissertação
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10348/9673
Resumo: Fresh-sliced mushrooms have a fast quality degradation and a relative short shelf-life, maximum 6 days. In the present work was studied the possibility of application of modified atmosphere packaging to extend the shelf-life and to improve the quality of fresh-sliced mushrooms Agaricus bisporus. The tests were done in Holland, at Royal Vezet BV, one of the biggest European freshcut processors. It was selected the variant Sliced mushroom’s packed in bags of 200g to be tested in this study. Samples from fresh-sliced mushrooms were collected from Royal Vezet production lines and his respiration rate was measured. A number of variations to the standard Royal Vezet process parameters were tested. Samples from sliced mushrooms were produced and the respiration rate (RR) was measured. The results from the measurement of the respiration rate were used to calculate de ideal modified atmosphere packaging (MAP). To measure the mushrooms RR an innovative technology was used, the Respiration Meter from PerfoTec BV. This new technology can, simultaneously, measure the oxygen (O2) consumption and carbon dioxide (CO2) release, resulting from the product respiratory activity. Shelf-life tests from the tested product were done to check the effectiveness of the results. The mushrooms evidenced to have a high RR. At the optimal processing temperatures, the main factor tested able to slowdown the RR was the increase of cutting size of the mushroom’s slices. Lowering the initial package oxygen percentage did not improve the shelf life. According with this work the MAP specifications for fresh-sliced mushrooms (5mm) packed in bags of 200 g are: Film material - OPP, bag size - 170 mm height and 400 mm width, Perforations- 8 perforations per bag with 90 µm hole size and spaced by 38 mm. The new packaging improved the product quality but did not improve its shelf-life.
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spelling Improving the quality and extending the shelf-life of fresh-cut mushroomsModified atmosphere packagingmushroomsFresh-sliced mushrooms have a fast quality degradation and a relative short shelf-life, maximum 6 days. In the present work was studied the possibility of application of modified atmosphere packaging to extend the shelf-life and to improve the quality of fresh-sliced mushrooms Agaricus bisporus. The tests were done in Holland, at Royal Vezet BV, one of the biggest European freshcut processors. It was selected the variant Sliced mushroom’s packed in bags of 200g to be tested in this study. Samples from fresh-sliced mushrooms were collected from Royal Vezet production lines and his respiration rate was measured. A number of variations to the standard Royal Vezet process parameters were tested. Samples from sliced mushrooms were produced and the respiration rate (RR) was measured. The results from the measurement of the respiration rate were used to calculate de ideal modified atmosphere packaging (MAP). To measure the mushrooms RR an innovative technology was used, the Respiration Meter from PerfoTec BV. This new technology can, simultaneously, measure the oxygen (O2) consumption and carbon dioxide (CO2) release, resulting from the product respiratory activity. Shelf-life tests from the tested product were done to check the effectiveness of the results. The mushrooms evidenced to have a high RR. At the optimal processing temperatures, the main factor tested able to slowdown the RR was the increase of cutting size of the mushroom’s slices. Lowering the initial package oxygen percentage did not improve the shelf life. According with this work the MAP specifications for fresh-sliced mushrooms (5mm) packed in bags of 200 g are: Film material - OPP, bag size - 170 mm height and 400 mm width, Perforations- 8 perforations per bag with 90 µm hole size and spaced by 38 mm. The new packaging improved the product quality but did not improve its shelf-life.Os cogumelos frescos laminados têm uma rápida diminuição da qualidade e consequentemente uma vida útil relativamente curta, máximo de 6 dias. No presente trabalho foi estudada a possibilidade de aplicação de embalagens de atmosfera modificada (EAM) para prolongar o tempo de prateleira e melhorar a qualidade de cogumelos laminados frescos. O trabalho experimental foi realizado na Holanda, na empresa Royal Vezet BV, a maior empresa europeia no sector de frutos e vegetais processados, embalados e prontos a consumir. Para este estudo foi selecionado o cogumelo fatiado, embalado em embalagens de 200g. Amostras de cogumelos frescos foram recolhidas das linhas de produção da Royal Vezet BV e medida a sua taxa de respiração celular. Foram também recolhidas amostras de modificações de alguns processos usuais. Os resultados da medição da taxa de respiração foram usados para calcular as características do produto a ser embalado em embalagens de atmosfera modificada. Para medir a taxa de respiração celular dos cogumelos foi utilizada uma tecnologia inovadora, o Respiration Meter da empresa PerfoTec BV. Esta nova tecnologia pode, simultaneamente, medir o consumo de oxigênio (O2) e a produção de dióxido de carbono (CO2) resultante da atividade respiratória do produto. Testes sensoriais ao tempo de vida útil do produto foram feitos para verificar a eficácia dos resultados dos cogumelos embalados em embalagens de atmosfera modificada Os cogumelos evidenciaram ter uma taxa de respiração elevada. A temperatura ótima de processamento, o principal fator testado capaz de desacelerar a taxa de respiração do produto foi o aumento do tamanho do corte das fatias do cogumelo. Diminuir a percentagem inicial de oxigênio da embalagem não melhorou o tempo de prateleira do produto. De acordo com este trabalho, as especificações da embalagem de atmosfera modificada (EAM) para cogumelos frescos laminados (5mm) embalagem de 200g são: Material - OPP, tamanho do saco - 170 mm de altura e 400 mm de largura, perfurações - 8 perfurações por embalagem com 90 µm de diâmetro, espaçadas por 38 mm. A nova embalagem melhorou a qualidade do produto, mas não melhorou o seu prazo de validade.2020-02-20T15:41:42Z2019-07-30T00:00:00Z2019-07-30info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfapplication/pdfhttp://hdl.handle.net/10348/9673engmetadata only accessinfo:eu-repo/semantics/openAccessGonçalves, Francisco José Fonsecareponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-03-24T03:27:56Zoai:repositorio.utad.pt:10348/9673Portal AgregadorONGhttps://www.rcaap.pt/oai/openairemluisa.alvim@gmail.comopendoar:71602024-03-24T03:27:56Repositório 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 Improving the quality and extending the shelf-life of fresh-cut mushrooms
title Improving the quality and extending the shelf-life of fresh-cut mushrooms
spellingShingle Improving the quality and extending the shelf-life of fresh-cut mushrooms
Gonçalves, Francisco José Fonseca
Modified atmosphere packaging
mushrooms
title_short Improving the quality and extending the shelf-life of fresh-cut mushrooms
title_full Improving the quality and extending the shelf-life of fresh-cut mushrooms
title_fullStr Improving the quality and extending the shelf-life of fresh-cut mushrooms
title_full_unstemmed Improving the quality and extending the shelf-life of fresh-cut mushrooms
title_sort Improving the quality and extending the shelf-life of fresh-cut mushrooms
author Gonçalves, Francisco José Fonseca
author_facet Gonçalves, Francisco José Fonseca
author_role author
dc.contributor.author.fl_str_mv Gonçalves, Francisco José Fonseca
dc.subject.por.fl_str_mv Modified atmosphere packaging
mushrooms
topic Modified atmosphere packaging
mushrooms
description Fresh-sliced mushrooms have a fast quality degradation and a relative short shelf-life, maximum 6 days. In the present work was studied the possibility of application of modified atmosphere packaging to extend the shelf-life and to improve the quality of fresh-sliced mushrooms Agaricus bisporus. The tests were done in Holland, at Royal Vezet BV, one of the biggest European freshcut processors. It was selected the variant Sliced mushroom’s packed in bags of 200g to be tested in this study. Samples from fresh-sliced mushrooms were collected from Royal Vezet production lines and his respiration rate was measured. A number of variations to the standard Royal Vezet process parameters were tested. Samples from sliced mushrooms were produced and the respiration rate (RR) was measured. The results from the measurement of the respiration rate were used to calculate de ideal modified atmosphere packaging (MAP). To measure the mushrooms RR an innovative technology was used, the Respiration Meter from PerfoTec BV. This new technology can, simultaneously, measure the oxygen (O2) consumption and carbon dioxide (CO2) release, resulting from the product respiratory activity. Shelf-life tests from the tested product were done to check the effectiveness of the results. The mushrooms evidenced to have a high RR. At the optimal processing temperatures, the main factor tested able to slowdown the RR was the increase of cutting size of the mushroom’s slices. Lowering the initial package oxygen percentage did not improve the shelf life. According with this work the MAP specifications for fresh-sliced mushrooms (5mm) packed in bags of 200 g are: Film material - OPP, bag size - 170 mm height and 400 mm width, Perforations- 8 perforations per bag with 90 µm hole size and spaced by 38 mm. The new packaging improved the product quality but did not improve its shelf-life.
publishDate 2019
dc.date.none.fl_str_mv 2019-07-30T00:00:00Z
2019-07-30
2020-02-20T15:41:42Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10348/9673
url http://hdl.handle.net/10348/9673
dc.language.iso.fl_str_mv eng
language eng
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eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
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
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
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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