1. Key Laboratory of Pu-erh Tea Science, Ministry of Education, Yunnan Agricultural University, Kunming, P. R. China
2. College of Food Science and Technology, Yunnan Agricultural University, Kunming, P. R. China
3. College of Science, Yunnan Agricultural University, Kunming, P. R. China
4. 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, P. R. China
5. State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Kunming, P. R. China