1. Department of Physics and Earth Sciences; University of Parma; I-43124 Parma Italy
2. Department of Food Science; University of Parma; I-43124 Parma Italy
3. Department of Agriculture and Food Science; University of Naples Federico II; I-80055 Portici (Naples) Italy
4. Food Quality Design group; Wageningen University; 6700 EV Wageningen The Netherlands