1. State Key Laboratory of Pulp and Paper Engineering; South China University of Technology; 381 Wushan Rd Tianhe District Guangzhou 510640 P. R. China
2. Department of Biochemistry and DOE Great Lakes Bioenergy Research Center, Wisconsin Energy Institute; University of Wisconsin-Madison; 1552 University Ave. Madison WI 53726 USA
3. Beijing Key Laboratory of Lignocellulosic Chemistry; Beijing Forestry University; 35 Qinghua East Rd Haidian District Beijing 100083 P. R. China