1. University of Zagreb, Faculty of Pharmacy and Biochemistry, A. Kovačića 1, HR-10000 Zagreb, Croatia
2. Slovenian Institute of Hop Research and Brewing, Cesta Žalskega tabora 2, SI-3310 Žalec, Slovenia
3. Križevci College of Agriculture, M. Demerca 1, HR-48260 Križevci, Croatia
4. Public institution "Priroda", Grivica 4, HR-51000 Rijeka, Croatia