1. Food Biotechnology Group, Section of Analytical Environmental and Applied Chemistry, Department of Chemistry, University of Patras, GR-26500 Patras, Greece; Laboratory of Microbiology, School of Medicine, University of Ioannina, GR-45110, Greece; and School of Biomedical Sciences, Faculty of Life and Health Science, University of Ulster, Coleraine BT52 1SA, Northern Ireland, U.K.