Iv. Petrova1, N. Petkova2*, M. Ognyanov3, Ap. Simitchiev4, M. Todorova2, P. Denev2 1Department of Catering and Tourism, Faculty of Economic, University of Food Technologies, 4002 Plovdiv, Bulgaria 2Department of Organic Chemistry and Inorganic Chemistry, Technological Faculty, Univers
Continue Reading →