1. Department of Chemical Engineering, Budapest University of Technology and Economics, Müegyetem rkp. 3, H-1521 Budapest, Hungary, Department of Medicine, Semmelweis University, Szentkirályi Str. 46, H-1088 Budapest, Hungary, VITIVA d.o.o., Nova vas 98, SLO-2281 Markovci, Slovenia, Central Food Research Institute, Herman O. u. 15, H-1022 Budapest, Hungary, and Department of Pharmacognosy, Semmelweis University, Üllöi Str. 26, H-1085 Budapest, Hungary