1. State Key Laboratory
of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
2. Department
of Materials Science and Engineering, University of Maryland, College
Park, Maryland 20742, United States
3. Forest
Products Laboratory, U.S. Department of Agriculture Forest Service, Madison, Wisconsin 53726, United States
4. Metabolic Diseases Branch, National Institute
of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892, United States