Affiliation: | Department of Applied Bioscience, Faculty of Agriculture, University of Hokkaido, Kita-ku, Sapporo 060–8589, Japan and CREST, Japan Science and Technology Corporation, Honmachi 4-1-8 Kawaguchi 332–0012, Japan;;Department of Food and Nutrition, Junior College of Hokkaido Bunkyou, Kogane-cho 196, Eniwa 061–1408, Japan |