1. Tianjin Key Laboratory of Pulp and Paper Tianjin University of Science and Technology No. 9 at 13 Avenue, TEDA Tianjin 300457 P. R. China
2. State Key Laboratory of Tree Genetics and Breeding Northeast Forestry University Harbin 150040 P. R. China
3. CAS Key Laboratory of Biofuels Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences No. 189 Songling Road, Laoshan District Qingdao 266101 P. R. China
4. Department of Chemical Engineering Auburn University 212 Rolls Hall Auburn Alabama 36849 USA
5. Beijing Key Laboratory of Lignocellulosic Chemistry College of Materials Science and Technology Beijing Forestry University No.35 Tsinghua East Road, Haidian District Beijing 100083 P. R. China