1. Miaoli District Agricultural Research and Extension Station, COA, 261, Gungguan Shiang, Miaoli 363, Taiwan, Republic of China
2. Department of Food Science and Biotechnology, National Chung Hsing University, 250 Kuo Kuang Road, Taichung, Taiwan 402, Republic of China
3. Agricultural Chemicals and Toxic Substances Research Institute, COA, 11, Guangming Road, Wufong Township, Taichung County 413, Taiwan, Republic of China