1. Department of Chemical Engineering, E.T.S.E.I., University of Vigo, Vigo (Pontevedra), Spain
2. Faculty of Pharmacy, Department of Analytical Chemistry, Nutrition and Bromatology, University of Santiago de Compostela, Santiago de Compostela, Spain
3. Faculty of Pharmacy, Department of Organic Chemistry, University of Santiago de Compostela, Santiago de Compostela, Spain