[1] Science of Polymeric Materials, Department of Biomaterial Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo,113-8657, Japan
[2] Ensuiko Sugar Refining Co., Ltd., 1-1-1 Fukuura, Kanazawa-ku, Yokohama,Kanagawa,236-0004, Japan