1. Department of Biotechnology, University of Food Technologies, 26 Maritsa Blvd., 4002 Plovdiv, Bulgaria
2. Department of Catering and Nutrition, University of Food Technologies, 26 Maritsa Blvd., 4002 Plovdiv, Bulgaria
3. Institute of Food Preservation and Quality, Agricultural Academy, 154 Vasil Aprilov str., 4002 Plovdiv, Bulgaria
4. Department of Microbiology, University of Food Technologies, 26 Maritsa Blvd., 4002 Plovdiv, Bulgaria