1. Agricultural and Biological Engineering; University of Illinois at Urbana-Champaign; 1304 W. Pennsylvania Ave., Urbana IL 61801 USA
2. Plant Polymer Research Unit, National Center for Agricultural Utilization Research; USDA Agricultural Research Service; 1815 N. University Street, Peoria IL 61604 USA
3. Crop Sciences; University of Illinois at Urbana-Champaign; 1201 W. Gregory Drive, Urbana IL 61801 USA
4. Agricultural and Biological Engineering; University of Illinois at Urbana-Champaign; 1304 W. Pennsylvania Ave, Urbana IL 61801 USA