1. Institute of Food Technology and Food Chemistry, Technische Universität Berlin, Gustav-Meyer-Allee 25, D-13355 Berlin, Germany
2. Leibniz-Institute of Vegetable and Ornamental Crops Grossbeeren/Erfurt e.V., Theodor-Echtermeyer-Weg 1, D-14979 Grossbeeren, Germany
3. Institute of Food Chemistry, Universität Hamburg, Grindelallee 117, D-20146 Hamburg, Germany