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| 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. |
| 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... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Freeze-drying; Freezing; Bovine pericardium. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000600021 |
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