1. Department of Chemical Engineering, Faculty of Science, University of Vigo (Campus Ourense), As Lagoas, 32004 Ourense, Spain; Department of Biotechnology, INETI, Estrada do Paço do Lumiar 22, 1649-038 Lisboa, Portugal; and Egas Moniz, Cooperativa de Ensino Superior, Quinta da Granja, 2829-511 Caparica, Portugal