1. Graduate School of Biotechnology, and Department of Statistics, Korea University, Seoul 136-701, Korea; Department of Food Engineering, College of Engineering, Mokpo National University, Muan 534-729, Korea; Department of Traditional Fermented Food, Kyongbuk College of Science, Chilkok 718-850, Korea; Department of Food Science and Technology, University of Georgia, Griffin, Georgia 30223-17973; Department of Packaging Science, Clemson University, Clemson, South Carolina 29634-0370