1. Key Laboratory of Pu-erh Tea Science, Ministry of Education, Yunnan Agricultural University, Kunming 650224, P. R. China
2. College of Food Science and Technology, Yunnan Agricultural University, Kunming 650224, P. R. China
3. College of Health Nursing Sciences, Yunnan Open University, Kunming 650223, P. R. China
4. Chinese Materia Medica, Yunnan University of Chinese Medicine, Kunming 650500, P. R. China
5. Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education; Yunnan Provincial Center for Research & Development of Natural Products; School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
6. College of Science, Yunnan Agricultural University, Kunming 650224, P. R. China
7. State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Kunming 650224, P. R. China