1. Organic Chemistry, Natural Products and Agrifood (QOPNA), Chemistry Dept.; Univ. of Aveiro; Campus Universitário de Santiago 3810-193 Aveiro Portugal
2. LAQV@REQUIMTE/Laboratory of Bromatology and Hydrology; Faculty of Pharmacy, Porto Univ.; Rua Jorge Viterbo Ferreira, 228 4050-313 Porto Portugal
3. Mountain Research Centre (CIMO), School of Agriculture; Polytechnic Inst. of Bragança; Campus de Santa Apolónia 5300-253 Bragança Portugal