1. Institute for Biotechnology and Bioengineering, Centre for Biological Engineering; Universidade do Minho; Campus de Gualtar 4710-057 Braga Portugal
2. Department of Biotechnology; Institute of Chemical Technology Prague; Technická 5 166 28 Prague 6 Czech Republic
3. UNICER − Bebidas de Portugal SGPS; SA, Leça do Balio, 4466-955 S. Mamede de Infesta Portugal