1. Department of Food Quality & Chemistry of Natural Products, Mediterranean Agronomic Institute of Chania (M.A.I.Ch.), Centre International de Hautes Etudes Agronomiques Méditerranéennes, P.O. Box 85, Chania 73100, Greece
2. Department of Chemistry, School of Physical Science, National and Kapodistrian University of Athens, Panepistimiopolis, Athens 15771, Greece