1. Department of Food Technology, Faculty of Agro-Industry; Prince of Songkla University; Hat Yai, Songkhla 90112 Thailand
2. Matis-Icelandic Food and Biotechnology R & D; Vinlandsleid 12 IS-113 Reykjavik Iceland
3. Department of Food Science and Human Nutrition; University of Florida; Gainesville FL 32611 USA