1. Owens Corning Science & Technology Center, 2790 Columbus Road, Route 16, Granville, Ohio 43023-1200, Plant Polymer Research Unit, National Center for Agricultural Utilization Research, ARS-USDA, 1815 North University Street, Peoria, Illinois 61604, and Bioproduct Chemistry and Engineering Research, Western Regional Research Center, PW-ARS-USDA, 800 Buchanan Street, Albany, California 94710