1. Dept. of Food Technology, Nutrition and Bromatology, Veterinary Faculty; Univ. of Murcia; Espinardo 30071 Murcia Spain
2. Dept. of Food and Nutritional Sciences; Univ. of Reading; Whiteknights P.O. Box 226 Reading Berkshire RG6 6AP U.K
3. Dept. of Food Technology, Faculty of Technology; Khon Kaen Univ; Khon Kaen 40002 Thailand