1. Department of Food Science, University of Bologna, 47023 Cesena, Italy, Center for Magnetic Resonance, University of Florence, 50019 Sesto Fiorentino, Italy, Department of Chemistry, University of Florence, 50019 Sesto Fiorentino, Italy, Department of Agricultural Biotechnology, University of Florence, 50019 Sesto Fiorentino, Italy, FiorGen Foundation, 50019 Sesto Fiorentino, Italy, and Department of Chemistry, University of Calabria, 87036 Arcavacata di Rende, Italy.