1. U.S. Army Natick Research, Development and Engineering Center, Kansas Street, Natick, MA 01760-5018
2. Institute of Biotechnology, Korea University, 1 Anam-dong, Sungbuk-ku, Seoul 136-701, Korea
3. Department of Food Science and Technology, Ohio State University, Columbus, OH 43210
4. Current address: Department of Food Science and Nutrition, Chapman University, Orange, CA 92666