1. Department
of Biological Systems Engineering, Washington State University, Pullman, Washington 99164-6120, United States
2. Renewable
Materials Program, Department of Forest, Rangeland, and Fire Science, University of Idaho, Moscow, Idaho 83844, United States
3. Center
for NMR Spectroscopy, Washington State University, P.O. Box 644630, Pullman, Washington 99164-4630, United States
4. Pacific Northwest National Laboratory, Richland, Washington 99354, United States