1. Systems Bio-Industries, Waukesha, WI 53187.
2. USDA, National Center for Agricultural Utilization Research, 1815 N. University St. Peoria, IL 61604-3999.
3. Corresponding author. E-mail: dmyers@iastate.edu.
4. Center for Crops Utilization Research and the Department of Food Science and Human Nutrition, Iowa State University, Ames, IA 50010-1061
5. Pillsbury Technology Center, Minneapolis MN 55414-2198.
6. Delimex, San Diego, CA 92173.