1. Laboratory of Food Quality Design and Development, Graduate School of Agriculture, Kyoto University, Uji, Kyoto 611-0011, Japan; National Institute of Crop Science, National Agricultural Research Organization, Kannondai 2-1-18, Tsukuba, Ibaraki 305-8518, Japan; Nagano Chushin Agricultural Experiment Station, Shiojiri, Nagano 399-6461, Japan; and Department of Food Science, Ishikawa Agricultural College, 1-308 Suematsu, Nonoichi, Ishikawa 921-8836, Japan