The contributions to this work by Matthias Adams (FH Birkenfeld), Sabine Schwarz (Technical University Berlin), Petra Stark (IBWF) and Anja Schüffler (IBWF) are gratefully acknowledged. Furthermore we would like to thank the University of Reims Champagne-Ardenne (Institut Georges Chappaz de la vigne et du vin en Champagne) and the COST European cooperation in science and technology (FA1303) for their financial support.