1. Whistler Center for Carbohydrate Research, 1160 Smith Hall, Purdue University, West Lafayette, IN 47907-1160.
2. Present address: Nestlé Research and Development Center-Connecticut, 201 Housatonic Ave., New Milford, CT 06776-5528.
3. Present address: Research and Development, California Natural Products, P.O. Box 1219, Lathrop, CA 95330.
4. Corresponding author. E-mail: bemiller@foodsci.purdue.edu.