1. Department of Chemistry, National Chung Hsing University, 402 Taichung, Taiwan
2. Wallenberg Wood Science Center, Technical Chemistry, Department of Chemistry, Chemical-Biological Centre, Umeå University, SE-901 87 Umeå, Sweden
3. Department of Forest Biomaterials and Technology, Swedish University of Agricultural Sciences (SLU), SE-90183 Umeå, Sweden
4. Department of Chemistry, Chemical-Biological Centre, Umeå University, SE-901 87 Umeå, Sweden
5. Analytical Development Laboratory, Apicore LLC, Somerset, New Jersey 08873, United States
6. Laboratory of Industrial Chemistry and Reaction Engineering, Johan Gadolin Process Chemistry Centre, Åbo Akademi University, FI-20500 Turku, Finland