1. Department of Food Science and Technology, University of Georgia, Athens, Georgia 30602, Department of Bioindustry Technology, Dayeh University, 112 Shan-Jiau Road, Da-Tsuen, Chang-Hua, 515, Taiwan, Department of Life Science, National Taiwan Normal University, Taipei 116, Taiwan, Institute of Plant and Microbial Biology, Academia Sinica, Nankang, Taipei, 11529, Taiwan, and Department of Food Science and Biotechnology, National Chung Hsing University, Taichung, 402, Taiwan