1. State Key Laboratory of Southwestern Chinese Medicine Resources, Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
2. School of Ethnic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
3. Department of Chemistry, Beijing Key Laboratory of Microanalytical Methods and Instrumentation, MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China
4. Institute of Quality Standard and Testing Technology for Agro-Products, The Chinese Academy of Agricultural Sciences, Beijing 100081, China