1. State Key Laboratory of Chemical Engineering; College of Chemical and Biological Engineering; Zhejiang University; Hangzhou Zhejiang 310027 P.R. China
2. Key Lab of Biomass Chemical Engineering of Ministry of Education; College of Chemical and Biological Engineering; Zhejiang University; Hangzhou Zhejiang 310027 P.R. China
3. Department of Bioproducts and Biosystems Engineering; University of Minnesota; 2004 Folwell Avenue St. Paul Minnesota 55108 USA