作者单位:Institute of Physiological Chemistry, University of Veterinary Medicine Hannover, 30559 Hannover[1]Department of Biology, University of Waterloo, Waterloo, ON N2L 3G1, Canada[2]United States Department of Agriculture, Agricultural Research Service Children's Nutrition[3]Whistler Center for Carbohydrate Research, Dept. of Food Science, Purdue University, 745[4]