1. Department of Biology, Environmental Science Programme, Food and Nutritional Sciences Programme, and Food Science Laboratory, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China; Pulmuone, Research and Development Center, Pulmuone Company Ltd., Seoul 120−600, South Korea; and Department of Food Science and Human Nutrition, Clemson University, 224 Poole Agriculture Center, Clemson, South Carolina 29634