Characterization of a biodegradable starch based film. Application on the preservation of fresh spinach

Detalhes bibliográficos
Autor(a) principal: Gonzalez, Inês Antunes
Data de Publicação: 2016
Tipo de documento: Dissertação
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.5/12114
Resumo: Mestrado em Engenharia Alimentar - Instituto Superior de Agronomia - UL
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spelling Characterization of a biodegradable starch based film. Application on the preservation of fresh spinachthermoplastic starch based wrap filmMater-Bipolyvinylchloridewrap filmspinach preservationMestrado em Engenharia Alimentar - Instituto Superior de Agronomia - ULThe goal of the present study was the characterization of a biodegradable thermoplastic starch based wrap film (TPS), produced from Mater-Bi®, and its application on the preservation of ready prepared fresh-cut spinach, in parallel with the non-biodegradable polyvinyl chloride (PVC) wrap film. The TPS-based film presented a similar vapour adsorption (< 5%, dry basis) to the PVC film. In addition, the carbon dioxide and oxygen permeability was in the same range (TPS-based: PCO2 =34.6x10-17-76.1x10-17mol.m/m2sPa, PO2 =3.41x10-17 – 5.71x10-17 mol.m/m2sPa; PVC: PCO2 = 34.5x1017 – 62.8x10-17mol.m/m2sPa, PO2 = 3.03x10-17 – 6.21x10-17 mol.m/m2sPa), and was not significantly affected by the relative humidity. The major differences detected were in what concerns water vapour permeability, (0.9x10-12 - 1.27x10-12 mol.m/m2sPa and 3.64x10-12 – 4.43x10-12 mol.m/m2sPa for TPSbased and PVC film) and strain at break (5.7 times higher for TPS-based under extension tests). TPSbased film showed a better transparency for white colour, although for green, yellow and red it was the PVC having better results. Both films revealed to have a similar performance in fresh-cut spinach preservation. The major difference was detected on the preventing weight loss, as PVC film showed to be more effective than TPS-based film due to its higher water vapour barrier. Based on the results obtained it can be concluded that the tested thermoplastic starch based wrap film is a strong substitute, ecological, to conventional PVC-based filmISA-ULAlves, Vitor Manuel DelgadoMartins, Margarida MoldãoDuarte, Elizabeth Fernandes de AlmeidaRepositório da Universidade de LisboaGonzalez, Inês Antunes2016-09-16T10:47:24Z20162016-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10400.5/12114TID:201846373engGonzalez, I.A. - Characterization of a biodegradable starch based film. Application on the preservation of fresh spinach. Lisboa: ISA, 2016, 63 p.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-03-06T14:42:19Zoai:www.repository.utl.pt:10400.5/12114Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T16:58:18.219702Repositório 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 Characterization of a biodegradable starch based film. Application on the preservation of fresh spinach
title Characterization of a biodegradable starch based film. Application on the preservation of fresh spinach
spellingShingle Characterization of a biodegradable starch based film. Application on the preservation of fresh spinach
Gonzalez, Inês Antunes
thermoplastic starch based wrap film
Mater-Bi
polyvinylchloride
wrap film
spinach preservation
title_short Characterization of a biodegradable starch based film. Application on the preservation of fresh spinach
title_full Characterization of a biodegradable starch based film. Application on the preservation of fresh spinach
title_fullStr Characterization of a biodegradable starch based film. Application on the preservation of fresh spinach
title_full_unstemmed Characterization of a biodegradable starch based film. Application on the preservation of fresh spinach
title_sort Characterization of a biodegradable starch based film. Application on the preservation of fresh spinach
author Gonzalez, Inês Antunes
author_facet Gonzalez, Inês Antunes
author_role author
dc.contributor.none.fl_str_mv Alves, Vitor Manuel Delgado
Martins, Margarida Moldão
Duarte, Elizabeth Fernandes de Almeida
Repositório da Universidade de Lisboa
dc.contributor.author.fl_str_mv Gonzalez, Inês Antunes
dc.subject.por.fl_str_mv thermoplastic starch based wrap film
Mater-Bi
polyvinylchloride
wrap film
spinach preservation
topic thermoplastic starch based wrap film
Mater-Bi
polyvinylchloride
wrap film
spinach preservation
description Mestrado em Engenharia Alimentar - Instituto Superior de Agronomia - UL
publishDate 2016
dc.date.none.fl_str_mv 2016-09-16T10:47:24Z
2016
2016-01-01T00:00:00Z
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/10400.5/12114
TID:201846373
url http://hdl.handle.net/10400.5/12114
identifier_str_mv TID:201846373
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Gonzalez, I.A. - Characterization of a biodegradable starch based film. Application on the preservation of fresh spinach. Lisboa: ISA, 2016, 63 p.
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv ISA-UL
publisher.none.fl_str_mv ISA-UL
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
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