1. Department of Chemistry and Biotechnology, Faculty of Science and Technology, Kochi University, 2-5-1 Akebono-cho, Kochi City, Kochi 780-8520, Japan
2. Department of Brewing, Tsukasa Botan Brewing Company, Limited, 1299 Ko, Sakawa-cho, Takaoka-gun, Kochi 789-1201, Japan
3. Higuchi Matsunosuke Shoten Company, Limited, 1-14-2, Harimacho, Abeno-ku, Osaka-shi, Osaka-fu 545-0022, Japan
4. Department of Nutritional Science, Faculty of Human Ecology, Yasuda Women's University, 6-13-1, Yasuhigashi, Hiroshima Asaminami-ku, Hiroshima 731-0153, Japan