1. Laboratory of Organic Chemistry, Phytochemical Section, Wageningen University, Dreijenplein 8, 6703 HB Wageningen, The Netherlands, Department of Agrotechnology and Food Sciences, Food Chemistry Section, Wageningen University, Bomenweg 2, 6703 HD Wageningen, The Netherlands, and Department of Food Technology, Kaunas University of Technology, Radvilenu pl 19, LT-3028 Kaunas, Lithuania