1. Guelph Food Research Center, Agriculture and Agri-Food Canada, Guelph, N1G 5C9, Ontario, Canada, Institut für Makromolekulare Chemie, Albert Ludwigs Universität, 79104 Freiburg i. Br., Germany, Phillips Hydrocolloids Research Centre, The North East Wales Institute, Wrexham LL11 2AW, Wales, United Kingdom, Phillips Hydrocolloids Research Ltd, 45 Old Bond Street, London W1S 4AQ, United Kingdom