Thickness effects of myofibrillar protein based edible films on their functional properties
Autor(a) principal: | |
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Data de Publicação: | 2000 |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Pesquisa Agropecuária Brasileira (Online) |
Texto Completo: | https://seer.sct.embrapa.br/index.php/pab/article/view/5887 |
Resumo: | Research on edible and biodegradable films had been promoted recently because of environmental concerns. The use of these materials for packaging applications is conditioned by their functional properties, which are influenced by many factors, including thickness. The objective of this work was to study the influence of thickness of myofibrillar protein-based biofilms on some of their functional properties. Biofilms were prepared from film forming solutions (FFS) containing 1 g of protein/100 g of FFS. The plasticizer concentration was 45 g glycerin/100 g of protein and the pH was kept at 2.7. After drying, biofilms were conditioned in desiccators at 58% relative humidity and 22ºC, for four days. Mechanical properties were determined by puncture tests; water vapor permeability, using a gravimetric method, and color and opacity, with a HunterLab colorimeter, all tests at 22ºC. Tensile strength, water vapor permeability, color and opacity of both biofilms, increased linearly upon thickness. Deformation at break presented little slope with considerable points dispersion for both biofilms. Water vapor transmission rate decreased linearly with thickness. |
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Thickness effects of myofibrillar protein based edible films on their functional propertiesInfluência da espessura de biofilmes feitos à base de proteínas miofibrilares sobre suas propriedades funcionaisprotein products; biopolymers; meat; fish; mechanical properties; optical properties; permeabilityprodutos protéicos; biopolímeros; carne; peixe; propriedades mecânicas; propriedades ópticas; permeabilidadeResearch on edible and biodegradable films had been promoted recently because of environmental concerns. The use of these materials for packaging applications is conditioned by their functional properties, which are influenced by many factors, including thickness. The objective of this work was to study the influence of thickness of myofibrillar protein-based biofilms on some of their functional properties. Biofilms were prepared from film forming solutions (FFS) containing 1 g of protein/100 g of FFS. The plasticizer concentration was 45 g glycerin/100 g of protein and the pH was kept at 2.7. After drying, biofilms were conditioned in desiccators at 58% relative humidity and 22ºC, for four days. Mechanical properties were determined by puncture tests; water vapor permeability, using a gravimetric method, and color and opacity, with a HunterLab colorimeter, all tests at 22ºC. Tensile strength, water vapor permeability, color and opacity of both biofilms, increased linearly upon thickness. Deformation at break presented little slope with considerable points dispersion for both biofilms. Water vapor transmission rate decreased linearly with thickness.O emprego potencial de filmes comestíveis e biodegradáveis em embalagens é condicionado pelas suas propriedades funcionais, que são influenciadas por muitos fatores, inclusive pela espessura. O objetivo deste trabalho foi estudar a influência da espessura dos biofilmes feitos à base de proteínas miofibrilares (de carne bovina e de tilápia-do-nilo) sobre suas propriedades funcionais. Os biofilmes foram preparados a partir de uma solução filmogênica com 1 g de proteínas/100 g de solução. A concentração de plastificante foi de 45 g de glicerina/100 g de proteínas, e o pH foi mantido em 2,7. Após secagem, os filmes foram acondicionados em dessecadores a 58% de umidade relativa e 22°C, por quatro dias. As propriedades mecânicas foram determinadas por teste de perfuração; a permeabilidade ao vapor de água, por um método gravimétrico, e a cor e a opacidade, com colorímetro HunterLab, a 22°C. A força na perfuração, a permeabilidade ao vapor de água, a diferença de cor e a opacidade dos dois biofilmes aumentaram linearmente com a espessura dos corpos-de-prova. A deformação na perfuração foi pouco dependente da espessura e apresentou grande dispersão, em ambos os filmes. A taxa de permeabilidade ao vapor de água diminuiu linearmente com a espessura. Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraSobral, Paulo José do Amaral2000-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/5887Pesquisa Agropecuaria Brasileira; v.35, n.6, jun. 2000; 1251-1259Pesquisa Agropecuária Brasileira; v.35, n.6, jun. 2000; 1251-12591678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/5887/2991info:eu-repo/semantics/openAccess2010-07-27T13:53:06Zoai:ojs.seer.sct.embrapa.br:article/5887Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2010-07-27T13:53:06Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Thickness effects of myofibrillar protein based edible films on their functional properties Influência da espessura de biofilmes feitos à base de proteínas miofibrilares sobre suas propriedades funcionais |
title |
Thickness effects of myofibrillar protein based edible films on their functional properties |
spellingShingle |
Thickness effects of myofibrillar protein based edible films on their functional properties Sobral, Paulo José do Amaral protein products; biopolymers; meat; fish; mechanical properties; optical properties; permeability produtos protéicos; biopolímeros; carne; peixe; propriedades mecânicas; propriedades ópticas; permeabilidade |
title_short |
Thickness effects of myofibrillar protein based edible films on their functional properties |
title_full |
Thickness effects of myofibrillar protein based edible films on their functional properties |
title_fullStr |
Thickness effects of myofibrillar protein based edible films on their functional properties |
title_full_unstemmed |
Thickness effects of myofibrillar protein based edible films on their functional properties |
title_sort |
Thickness effects of myofibrillar protein based edible films on their functional properties |
author |
Sobral, Paulo José do Amaral |
author_facet |
Sobral, Paulo José do Amaral |
author_role |
author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Sobral, Paulo José do Amaral |
dc.subject.por.fl_str_mv |
protein products; biopolymers; meat; fish; mechanical properties; optical properties; permeability produtos protéicos; biopolímeros; carne; peixe; propriedades mecânicas; propriedades ópticas; permeabilidade |
topic |
protein products; biopolymers; meat; fish; mechanical properties; optical properties; permeability produtos protéicos; biopolímeros; carne; peixe; propriedades mecânicas; propriedades ópticas; permeabilidade |
description |
Research on edible and biodegradable films had been promoted recently because of environmental concerns. The use of these materials for packaging applications is conditioned by their functional properties, which are influenced by many factors, including thickness. The objective of this work was to study the influence of thickness of myofibrillar protein-based biofilms on some of their functional properties. Biofilms were prepared from film forming solutions (FFS) containing 1 g of protein/100 g of FFS. The plasticizer concentration was 45 g glycerin/100 g of protein and the pH was kept at 2.7. After drying, biofilms were conditioned in desiccators at 58% relative humidity and 22ºC, for four days. Mechanical properties were determined by puncture tests; water vapor permeability, using a gravimetric method, and color and opacity, with a HunterLab colorimeter, all tests at 22ºC. Tensile strength, water vapor permeability, color and opacity of both biofilms, increased linearly upon thickness. Deformation at break presented little slope with considerable points dispersion for both biofilms. Water vapor transmission rate decreased linearly with thickness. |
publishDate |
2000 |
dc.date.none.fl_str_mv |
2000-06-01 |
dc.type.none.fl_str_mv |
|
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/5887 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/5887 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/5887/2991 |
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 |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
dc.source.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira; v.35, n.6, jun. 2000; 1251-1259 Pesquisa Agropecuária Brasileira; v.35, n.6, jun. 2000; 1251-1259 1678-3921 0100-104x reponame:Pesquisa Agropecuária Brasileira (Online) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Pesquisa Agropecuária Brasileira (Online) |
collection |
Pesquisa Agropecuária Brasileira (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
pab@sct.embrapa.br || sct.pab@embrapa.br |
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