1. Department of Pharmacy, Laboratory of Instrumental Analysis, University of Patras, Panepistimiopolis, Rio 265 04, Greece, GAIA Research Center, The Goulandris Natural History Museum, 13 Levidou Street, Kifissia 145 62, Greece, and Unité des Maladies Métaboliques et Micronutriments, INRA Theix, 63122 Saint Genès-Champanelle, France