1. Professor and research associate, respectively, University of Arkansas, Department of Food Science, 2650 N. Young Ave., Fayetteville, AR 72704.
2. Corresponding author. Phone: 479-575-2841. Fax: 479-575-6936. E-mail: tsiebenm@uark.edu
3. Former research scientist, RiceTec, Inc., 3505 Linwood St., Pearland, TX 77581.