(1.College of Food Science and Nutritional Engineering, China Agricultural University, National Engineering Research Centre for Fruit and Vegetable Processing, Key Laboratory of Fruit and Vegetable Processing, Ministry of Agriculture and Rural Affairs, Beijing Key Laboratory for Food Non-thermal Processing, Beijing 100083;2.Institute of Botany, Chinese Academy of Sciences, Beijing 100093;3.Food Science Institute, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021;4.Anhui Agricultural University, State Key Laboratory of Tea Plant Biology and Utilization, Hefei 230036;5.Yunnan Agricultural University, Key Laboratory of Pu-er Tea Science, Ministry of Education, Kunming 650201;6.Hunan Agricultural Products Processing Institute, Hunan Academy of Agricultural Sciences, Dongting Laboratory, Changsha 410125)