1. Division of Foods, National Institute of Health Sciences, Kanagawa, Japan 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa 210-9501, Japan
2. Division of Natural Medicines, Faculty of Pharmacy, Keio University, Tokyo, Japan 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
3. Division of Biochemistry, National Institute of Health Sciences, Kanagawa, Japan 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa 210-9501, Japan
4. Division of Food Safety Information, National Institute of Health Sciences, Kanagawa, Japan 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa 210-9501, Japan
5. Faculty of Veterinary Medicine, Okayama University of Science, Ehime, Japan 1-3 Ikoinooka, Imabari, Ehime 794-8555, Japan