1. Program associate and university professor, respectively, Department of Food Science, University of Arkansas, 2650 N. Young Avenue, Fayetteville, AR 72704.
2. Corresponding author. Phone: 479-575-2841. Fax: 479-575-6936. E-mail address: tsiebenm@uark.edu
3. Professor, University of Arkansas Rice Research and Extension Center, Stuttgart, AR.