1. Laboratory of Food Chemistry and Biochemistry & Leuven Food Science and Nutrition Research Centre (LFoRCe), Katholieke Universiteit Leuven, Kasteelpark Arenberg 20-box 2463, B-3001 Leuven, Belgium
2. VTT Technical Research Centre of Finland, P.O. Box 1000, FI-02044 VTT, Finland