1. University College Ghent, Faculty of Biosciences and Landscape Architecture, Department of Food Science and Technology, Voskenslaan 270, 9000 Ghent.
2. Corresponding author. Phone: +32 9 248 88 71. Fax: +32 9 242 42 79. E-mail: filip.vanbockstaele@hogent.be
3. Ghent University, Department of Food Quality and Food Safety, Laboratory of Food Technology and Engineering, Coupure Links 653, 9000 Ghent.