Improving the quality and extending the shelf-life of fresh-cut mushrooms
Autor(a) principal: | |
---|---|
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. |
id |
RCAP_66536d54c7ab462c907a7c0134584fda |
---|---|
oai_identifier_str |
oai:repositorio.utad.pt:10348/9673 |
network_acronym_str |
RCAP |
network_name_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository_id_str |
7160 |
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 |
format |
masterThesis |
status_str |
publishedVersion |
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 |
dc.rights.driver.fl_str_mv |
metadata only access info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
metadata only access |
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 |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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 |
repository.mail.fl_str_mv |
mluisa.alvim@gmail.com |
_version_ |
1817543059308544000 |