1. Department of Food & Nutrition and HERI, Chonnam National University, Gwangju 500-757, Korea.
2. MGP Ingredients Inc., Atchison, KS 66002-0130.
3. Department of Grain Science & Industry, Kansas State University, Manhattan KS 66506.
4. Corresponding author. E-mail: pas@wheat.ksu.edu. Phone: 785-532-4088. Fax: 785-532-7010.