1. Graduate Institute of Pharmacy and School of Nutrition and Health Science, Taipei Medical University, Taipei, Taiwan 110, R.O.C., Chang-Gung Institute of Technology, Taoyuan, Taiwan 333, R.O.C., Institute of Botany and Research Center for Biodiversity, Academia Sinica, Nankang, Taipei, Taiwan, 115, R.O.C., and Department of Food and Nutrition, Chinese Culture University, Taipei, Taiwan 111, R.O.C.