1. Department of Crop and Soil Sciences, Washington State University, Pullman, WA 99164-6376; affiliated with the USDA-ARS Western Wheat Quality Laboratory.
2. Laboratory of Food Chemistry and Biochemistry, University of Leuven, Kasteelpark Arenberg 20, B-3001 Leuven, Belgium.
3. U.S. Department of Agriculture (USDA), Agricultural Research Service, Western Wheat Quality Laboratory, E-202 Food Quality Bldg., Washington State University, P.O. Box 646394, Pullman, WA 99164-6394. 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.
4. Corresponding author. Phone: (509) 335-4062. Fax: (509) 335-8573. E-mail: morrisc@wsu.edu