1. Institute of Chinese Pharmaceutical Sciences, China Medical University, Taichung 404, Taiwan, Republic of China
2. Department of Food Science, Nutrition, and Nutraceutical Biotechnology, Shih Chien University, Taipei 104, Taiwan, Republic of China
3. Graduate Institute of Pharmacognosy, Taipei Medical University, Taipei 110, Taiwan, Republic of China
4. Department of Chemistry, National Taiwan University, Taipei 106, Taiwan, Republic of China
5. Agricultural Biotechnology Research Center, Academic Sinica, Taipei 115, Taiwan, Republic of China
6. Tsuzuki Institute for Traditional Medicine, China Medical University, Taichung 404, Taiwan, Republic of China