1. Food Quality and Nutrition Department, Research and Innovation Centre; Fondazione Edmund Mach; Via E. Mach 1 38010 San Michele all'Adige (TN) Italy
2. Department of Food Science; University of Udine; Via Sondrio 2A 33100 Udine Italy
3. AIAB - Associazione Italiana per l'Agricoltura Biologica; largo D. Frisullo 00185 Rome Italy
4. Plant and Soil Science Section and Copenhagen Plant Science Centre, Department of Plant and Environmental Sciences, Faculty of Science; University of Copenhagen; Thorvaldsensvej 40 1871 Frederiksberg C Denmark