Affiliation: | a Chemical Laboratory, Meiji-Gakuin University, Totsuka, Yokohama, Kanagawa 244-8539, Japan b Hokkaido Junior College, Takusyoku University, Fukagawa, Hokkaido 074-8585, Japan c Laboratory of Crop Science, Akita Prefecture University, Akita 010-0195, Japan d Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41, Shinagawa, Tokyo 142-8501, Japan |