1. Department of Pharmacognosy, Graduate School of Biomedical Sciences, Hiroshima University
2. Subtropical Field Science Center, Faculty of Agriculture, University of the Ryukyus
3. Iriomote Station, Tropical Biosphere Research Center, University of the Ryukyus
4. Division of Foods, National Institute of Health Sciences
5. Faculty of Integrated Arts and Sciences, The University of Tokushima