1. Department
of Biomaterials Science, Graduate School of Agricultural and Life
Sciences, The University of Tokyo, Tokyo 113-8657, Japan
2. Department of Biomass Chemistry, Forestry and Forest Products Research Institute, 1 Matsuno-sato, Tsukuba, Ibaraki 305-8687, Japan
3. Fibre and Polymer Technology, School of
Chemical Science and Engineering, Royal Institute of Technology, Teknikringen 56-58, SE-100 44, Stockholm, Sweden