1. a Department Quality , Institute of Vegetable and Ornamental Crops Großbeeren/Erfurt e.V., Theodor-Echtermeyer-Weg 1, 14979 , Großbeeren, Germany
2. b Institute for Horticultural Sciences, Section Quality Dynamics/Postharvest Physiology, Humboldt University Berlin , Lentzeallee, Berlin, 75, 14195, Germany