1. National Institute of Health and Nutrition, Department of Food Function and Labeling, 1-23-1, Toyama, Shinjuku, Tokyo 162-8636, Japan
2. Tokyo University of Science, Department of Pharmacy, Faculty of Pharmaceutical Sciences, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
3. University of Shizuoka, School of Food and Nutritional Sciences, Division of Nutritional Sciences, 52-1, Yada, Suruga-ku, Shizuoka, 422-8526, Japan