1 Department of Food Analysis and Nutrition, Faculty of Food and Biochemical Technology, University of Chemistry and Technology, Prague, Technicka 3, CZ-166 28 Prague 6, Czech Republic.
2 Research and Breeding Institute of Pomology Holovousy, Department of Genebanks, Holovousy 129, Horice 508 01, Czech Republic.
3 Department of Food Analysis and Nutrition, Faculty of Food and Biochemical Technology, University of Chemistry and Technology, Prague, Technicka 3, CZ-166 28 Prague 6, Czech Republic. Electronic address: jana.hajslova@vscht.cz.