1. Laboratory of Dairy Research, Department of Food Science and Technology, Agricultural University of Athens, Iera Odos 75, 118 55 Athens, Greece
2. Department of Biochemistry and Molecular Biology, Faculty of Biology, National and Kapodistrian University of Athens, Panepistimioupolis-Zographou, 157 84 Athens, Greece
3. Applied Maths N.V., B-9830 Sint-Martens-Latem, Belgium