1. Laboratory for Biomaterials and BioengineeringCRC‐IDepartment of Min‐Met‐Materials Eng.& University Hospital Research CenterRegenerative MedicineLaval University Quebec City G1V 0A6 Canada
2. Grupo de Pesquisa em Separação por AdsorçãoDepartment of Chemical Eng.Federal University of Ceará Campus do Pici – Bloco 709 Fortaleza Ceará 60455‐760 Brazil