The influence of freezing rates on bovine pericardium tissue Freeze-drying
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Archives of Biology and Technology |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000600021 |
Resumo: | The bovine pericardium has been used as biomaterial in developing bioprostheses. Freeze-drying is a drying process that could be used for heart valve's preservation. The maintenance of the characteristics of the biomaterial is important for a good heart valve performance. This paper describes the initial step in the development of a bovine pericardium tissue freeze-drying to be used in heart valves. Freeze-drying involves three steps: freezing, primary drying and secondary drying. The freezing step influences the ice crystal size and, consequently, the primary and secondary drying stages. The aim of this work was to investigate the influence of freezing rates on the bovine pericardium tissue freeze-drying parameters. The glass transition temperature and the structural behaviour of the lyophilized tissues were determined as also primary and secondary drying time. The slow freezing with thermal treatment presented better results than the other freeze-drying protocols. |
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Brazilian Archives of Biology and Technology |
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The influence of freezing rates on bovine pericardium tissue Freeze-dryingFreeze-dryingfreezingbovine pericardiumThe bovine pericardium has been used as biomaterial in developing bioprostheses. Freeze-drying is a drying process that could be used for heart valve's preservation. The maintenance of the characteristics of the biomaterial is important for a good heart valve performance. This paper describes the initial step in the development of a bovine pericardium tissue freeze-drying to be used in heart valves. Freeze-drying involves three steps: freezing, primary drying and secondary drying. The freezing step influences the ice crystal size and, consequently, the primary and secondary drying stages. The aim of this work was to investigate the influence of freezing rates on the bovine pericardium tissue freeze-drying parameters. The glass transition temperature and the structural behaviour of the lyophilized tissues were determined as also primary and secondary drying time. The slow freezing with thermal treatment presented better results than the other freeze-drying protocols.Instituto de Tecnologia do Paraná - Tecpar2009-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000600021Brazilian Archives of Biology and Technology v.52 n.6 2009reponame:Brazilian Archives of Biology and Technologyinstname:Instituto de Tecnologia do Paraná (Tecpar)instacron:TECPAR10.1590/S1516-89132009000600021info:eu-repo/semantics/openAccessBorgognoni,Camila FigueiredoTattini Junior,VirgilioAyrosa,Ana Maria Irene BartolomeuPolakiewicz,BronislawLeirner,Adolfo AlbertoMaizato,Marina Junko ShiotsuHiga,Olga ZazucoBeppu,Marisa MasumiPitombo,Ronaldo Nogueira de Moraeseng2010-02-11T00:00:00Zoai:scielo:S1516-89132009000600021Revistahttps://www.scielo.br/j/babt/https://old.scielo.br/oai/scielo-oai.phpbabt@tecpar.br||babt@tecpar.br1678-43241516-8913opendoar:2010-02-11T00:00Brazilian Archives of Biology and Technology - Instituto de Tecnologia do Paraná (Tecpar)false |
dc.title.none.fl_str_mv |
The influence of freezing rates on bovine pericardium tissue Freeze-drying |
title |
The influence of freezing rates on bovine pericardium tissue Freeze-drying |
spellingShingle |
The influence of freezing rates on bovine pericardium tissue Freeze-drying Borgognoni,Camila Figueiredo Freeze-drying freezing bovine pericardium |
title_short |
The influence of freezing rates on bovine pericardium tissue Freeze-drying |
title_full |
The influence of freezing rates on bovine pericardium tissue Freeze-drying |
title_fullStr |
The influence of freezing rates on bovine pericardium tissue Freeze-drying |
title_full_unstemmed |
The influence of freezing rates on bovine pericardium tissue Freeze-drying |
title_sort |
The influence of freezing rates on bovine pericardium tissue Freeze-drying |
author |
Borgognoni,Camila Figueiredo |
author_facet |
Borgognoni,Camila Figueiredo Tattini Junior,Virgilio Ayrosa,Ana Maria Irene Bartolomeu Polakiewicz,Bronislaw Leirner,Adolfo Alberto Maizato,Marina Junko Shiotsu Higa,Olga Zazuco Beppu,Marisa Masumi Pitombo,Ronaldo Nogueira de Moraes |
author_role |
author |
author2 |
Tattini Junior,Virgilio Ayrosa,Ana Maria Irene Bartolomeu Polakiewicz,Bronislaw Leirner,Adolfo Alberto Maizato,Marina Junko Shiotsu Higa,Olga Zazuco Beppu,Marisa Masumi Pitombo,Ronaldo Nogueira de Moraes |
author2_role |
author author author author author author author author |
dc.contributor.author.fl_str_mv |
Borgognoni,Camila Figueiredo Tattini Junior,Virgilio Ayrosa,Ana Maria Irene Bartolomeu Polakiewicz,Bronislaw Leirner,Adolfo Alberto Maizato,Marina Junko Shiotsu Higa,Olga Zazuco Beppu,Marisa Masumi Pitombo,Ronaldo Nogueira de Moraes |
dc.subject.por.fl_str_mv |
Freeze-drying freezing bovine pericardium |
topic |
Freeze-drying freezing bovine pericardium |
description |
The bovine pericardium has been used as biomaterial in developing bioprostheses. Freeze-drying is a drying process that could be used for heart valve's preservation. The maintenance of the characteristics of the biomaterial is important for a good heart valve performance. This paper describes the initial step in the development of a bovine pericardium tissue freeze-drying to be used in heart valves. Freeze-drying involves three steps: freezing, primary drying and secondary drying. The freezing step influences the ice crystal size and, consequently, the primary and secondary drying stages. The aim of this work was to investigate the influence of freezing rates on the bovine pericardium tissue freeze-drying parameters. The glass transition temperature and the structural behaviour of the lyophilized tissues were determined as also primary and secondary drying time. The slow freezing with thermal treatment presented better results than the other freeze-drying protocols. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-12-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000600021 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000600021 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1516-89132009000600021 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Instituto de Tecnologia do Paraná - Tecpar |
publisher.none.fl_str_mv |
Instituto de Tecnologia do Paraná - Tecpar |
dc.source.none.fl_str_mv |
Brazilian Archives of Biology and Technology v.52 n.6 2009 reponame:Brazilian Archives of Biology and Technology instname:Instituto de Tecnologia do Paraná (Tecpar) instacron:TECPAR |
instname_str |
Instituto de Tecnologia do Paraná (Tecpar) |
instacron_str |
TECPAR |
institution |
TECPAR |
reponame_str |
Brazilian Archives of Biology and Technology |
collection |
Brazilian Archives of Biology and Technology |
repository.name.fl_str_mv |
Brazilian Archives of Biology and Technology - Instituto de Tecnologia do Paraná (Tecpar) |
repository.mail.fl_str_mv |
babt@tecpar.br||babt@tecpar.br |
_version_ |
1750318273514176512 |