1. CCMAR and Department of Chemistry
and Pharmacy, F.C.T., University of Algarve, P-8005-039 Faro, Portugal
2. Department of Chemistry, University of Coimbra, P-3004-535 Coimbra, Portugal
3. Center for Research, Development
in Food Cryotechnology, (Conicet La Plata, National University of La Plata), RA-1900 La Plata, Argentina