1. Crop Conversion Science and Engineering Research Unit, Eastern Regional Research Center, Agricultural Research Service, U.S. Department of Agriculture, 600 East Mermaid Lane, Wyndmoor, PA 19038. Names are necessary to report factually on available data; however, the USDA neither guarantees nor warrants the standard of the product, and the use of the name by the USDA implies no approval of the product to the exclusion of others that may also be suitable.
2. Corresponding author. Phone: 215-233-6489. Fax: 215-233-6406. E-mail: rflores@errc.ars.usda.gov
3. Department of Grain Science and Industry, Kansas State University, Manhattan, KS.
4. North Atlantic Area, Agricultural Research Service, U.S. Department of Agriculture, 600 East Mermaid Lane, Wyndmoor, PA 19038.