Retired Professor of Industrial Microbiology and Biotechnology from University of Ljubljana, 1986-2013
Guest Professor of Food Safety at The University of Natural Resources and Life Sciences, Vienna, 2006-Doctor Honoris Cousa since 2014
Guest Professor of Modern Bio-Technology in Food Production at University Vienna, 2008-
Retired Guest Professor of Food Biotechnology from Budapest Szent István University, 1994-2006Doctor Honoris Cousa since 2000
Guest Professor of Food Safety at Faculty of Health Sciences at University of Ljubljana, 2011-
European Cooperation in Science and Technology -COST, Brussells, Belgium
Retired Guest Professor of Food Quality and Safety at University of Maribor, 2009-2019
Retired Guest Professor of Biotechnology from Pecs University, 1995-2005Doctor Honoris Cousa since 2002
Retired Professor of Microbiology and Food safety from University of Primorska, 2014-2016
Chinese Academy of Agricultural Sciences (CAAS), Institute of Vegetables & Flowers (IVF), Beijing, China
Eidgenössische Technische Hochschule Zürich(ETH) Institut für Lebensmittelwissenchaft, Zürich
Australian Wine Research Institute. Adelaide: Australia
NATO, Public diplomacy, Bruselles, Belgium
Nestlé Research Center, Vevey, Switzerland
Prehrambeno-biotehnološki fakultet, Sveušilište u Zagrebu, Zagreb, Hrvaška
LAbatt research department, London, Ontario, Canada
Technische Universiteit Delft, Delft, The Nederlands
European Science Foundation, Strasbourg, France
Universitat Rovira i Virgili. Bioquímica i Biotecnologia, Tarragona, Spain
Guest Professor of Food and bioteh safety UN University at ECPD in Belgrade, 2010-