1. Department of Food Science, National Pingtung University of Science and Technology, Pingtung 912-07, Taiwan, Life Science Center, Hsing-Wu College, 11-2 Fen-Liao Road, Lin-Kou, Taipei 112-44, Taiwan, Department of Sea Food Science, National Kaohsiung Marine University, Kaohsiung 811, Taiwan, and Graduate Institute of Food Science and Technology, National Taiwan University, Taipei 106-17, Taiwan