1. Faculty of Agriculture and Life Science, Hirosaki University, 3-Bunkyo-cho, Hirosaki, 036-8561, Japan
2. Graduate School of Science and Technology, Hirosaki University, 3-Bunkyo-cho, Hirosaki, 036-8561, Japan
3. Institute of Natural Medicine, University of Toyama, Toyama, 930-0194, Japan