1. Mountain Research Centre (CIMO), School of Agriculture; Polytechnic Institute of Bragança; Portugal
2. REQUIMTE/LAQV, Faculty of Pharmacy; University of Porto, Rua Jorge Viterbo Ferreira; no 228 4050-313 Porto Portugal
3. Department of Nutrition and Bromatology II, Faculty of Pharmacy; Complutense University of Madrid; Plaza Ramón y Cajal s/n., 28040 Madrid Spain