1. Department of Biotechnology, Faculty of Food and Biochemical Technology University of Chemistry and Technology Technická 5 Prague 16628 Czech Republic
2. Research Institute of Brewing and Malting Lípová 511/15 Prague 12044 Czech Republic
3. Plzeňský Prazdroj a.s., U Prazdroje 64/7 Plzeň 301 00 Czech Republic