1. Graduate Institute of Biotechnology, National Chung Hsing University, Taichung 402, Taiwan
2. Graduate Institute of Biotechnology, National Pingtung University of Science and Technology, Pingtung 912, Taiwan
3. Graduate Institute of Acupuncture, China Medical University, Taichung 404, Taiwan
4. Department
of Chemistry, National Chung Hsing University, Taichung 402, Taiwan
5. Agricultural Biotechnology Research Center, Academia Sinica, Taipei 115, Taiwan