1. National Food Research Institute, Tsukuba, Ibaraki 305-8642, Japan; Saga Prefectural Agriculture Research Center, Kawasoe, Saga 840-2205, Japan; School of Agriculture, Tokai University, Minamiaso-mura, Kumamoto 869-1404, Japan; Mitsubishi Rayon Company, Ltd., Yokohama, Kanagawa 230-0053, Japan; Miyazaki Prefectural Food Research and Development Center, Sadowara-cho, Miyazaki 880-0303, Japan; and Ariake National College of Technology, Omuta, Fukuoka 836-8585, Japan