1. Chemistry Department, University of Ioannina, P.O. Box 1186, 45110 Ioannina, Greece
2. Department of Chemistry, Laboratory of Chemistry and Technology of Polymers and Dyes, Aristotle University of Thessaloniki, GR-541 24 Thessaloniki, Greece
3. School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, E1 4NS London, U.K.
4. Department of Food Science and Technology, International Hellenic University, P.O. Box 141, 57400 Thessaloniki, Greece
5. Institute of Materials Science and Computing, University Research Center of Ioannina (URCI), 45110 Ioannina, Greece