1. Department of Food and Nutritional Sciences, University College Cork, Cork, Ireland, School of Land, Crop and Food Sciences, University of Queensland, Brisbane, QLD 4072, Australia, NIZO Food Research, PO Box 20, 6710 BA, Ede, The Netherlands, and Van 't Hoff laboratory for Physical and Colloid Chemistry, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands