1 Department of Analytical Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 53210 Pardubice, Czech Republic. Electronic address: libor.cervenka@upce.cz.
2 Department of Engineering and Machinery for Food Industry, Faculty of Food Technology, University of Agriculture, Balicka 122 Street., 30-149 Krakow, Poland. Electronic address: anna.stepien@urk.edu.pl.
3 Department of Analytical Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 53210 Pardubice, Czech Republic.
4 Department of Food Analysis and Chemistry, Faculty of Technology, Tomáš Baťa University in Zlín, Vavrečkova 275, 760 01 Zlín, Czech Republic. Electronic address: velichova@ft.utb.cz.
5 Department of Analytical Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 53210 Pardubice, Czech Republic. Electronic address: rrwitcza@cyf-kr.edu.pl.