1. Graduate research assistant, professor, and professor, respectively, Department of Grain Science and Industry, Kansas State University.
2. Present address: Kellogg Company, Battle Creek, MI.
3. Present address: R&R Research Services, Inc. Manhattan, KS.
4. Corresponding author. E-mail: r_and_r@kansas.net
5. Present address: American Association of Cereal Chemists, St. Paul, MN.