1. Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Via Renato Balzarini 1, 64100 Teramo, Italy
2. Aromalab illycaffè S.p.A., Area di Ricerca, Padriciano 99, 34149 Trieste, Italy
3. illycaffè S.p.A., Via Flavia 110, 34147 Trieste, Italy