1. Key Laboratory of Cultivation and Protection of Non-wood Forest Trees, Ministry of Education, Central South University of Forestry and Technology, Changsha, P. R. China
2. Hunan Entry–Exit Inspection and Quarantine Bureau, Changsha, P. R. China
3. Yunnan Food Safety Research Institute, The Food Safety Department, Kunming University of Science and Technology, Kunming, P. R. China