1. Department of Applied Chemistry, College of Engineering, Chubu University, Matsumoto, Kasugai 487-8501, Japan
2. Department of Fibre and Polymer Technology, Royal Institute of Technology, SE-100 44 Stockholm, Sweden
3. Wallenberg Wood Science Center, Royal Institute of Technology, SE-100 44 Stockholm, Sweden
4. School of Biotechnology, Royal Institute of Technology, AlbaNova University Centre, SE-106 91 Stockholm, Sweden
5. Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, Rokko, Nada, Kobe 657-8501, Japan