1. School of Food Science and Nutrition, Food Colloids and Bioprocessing group, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K.
2. Nestlé Product Technology Centre, Haxby Road, York YO31 8TA, U.K.
3. Nestlé Research, Vers-chez-les-Blanc, 1000 Lausanne 26, Switzerland