Miguel de la Guardia is, since 1991, Professor of Analytical Chemistry at the University of Valencia (Spain), having published numerous papers in the area of Analytical Chemistry related to sample preparation, automation, atomic and molecular spectroscopy and chromatography.Salvador Garrigues, is Professor of Analytical Chemistry at the University of Valencia (Spain) since 2006, being developed his research about sample preparation and, mainly, in the field of vibrational spectroscopy applied to the quantitative analysis, combined with automation and the use of chemometrics.Their research group has contributed to the development of Green Analytical Chemistry and participated in different research projects focused on food characterization and food safety, also for authentication of Protected Designation of Origin (PDO) foods.