1. Department of Food Science and Technology, Biotechnical Faculty; University of Ljubljana; Jamnikarjeva 101, Ljubljana 1000 Slovenia
2. Medical Faculty; University of Maribor; Taborska ulica 8, Maribor 2000 Slovenia
3. Institute of Pharmaceutical Sciences, Department of Pharmacognosy; University of Graz; Universitätsplatz 4 A-8010 Graz Austria
4. Department of Microbiology, Biochemistry, Molecular Biology and Biotechnology, Faculty of Agriculture and Life Sciences; University of Maribor; Pivola 10 2311 Hoče Slovenia