1. Yamazaki Baking Co., Research and Development Division, 3-15-6 Chitose, Sumida-Ku, Tokyo 130-0025, Japan.
2. Canadian Grain Commission, Grain Research Laboratory, 1404-303 Main Street, Winnipeg, MB, Canada R3C 3G8. Contribution No. 789.
3. Corresponding author. E-mail: kpreston@cgc.ca