1. Department of Food Service Industry, Uiduk University, San 50 Yugeom, Gangdong, Gyeongju, Gyongbuk 780-713, Korea, Department of Food & Beverage, Kyungdong College of Techno-Information, Geongsan City, Gyongbuk 712-904, Korea, Mass Analysis Laboratory, National Food Research Institute, Tsukuba, Japan 305-8642, and Western Regional Research Center, Agricultural Research Service, United States Department of Agriculture, Albany, California 94710