1. Department of Analytical Chemistry and Physical chemistry; University of Food Technologies-Plovdiv; Plovdiv Bulgaria
2. Department of Organic Chemistry and Inorganic Chemistry; University of Food Technologies-Plovdiv; Plovdiv Bulgaria
3. Institute of Biodiversity and Ecosystem Research; Bulgarian Academy of Sciences; Sofia Bulgaria
4. Laboratory of Applied Biotechnologies, The Stephan Angeloff Institute of Microbiology; Bulgarian Academy of Sciences; Plovdiv Bulgaria