1. School of Chemistry and Biological Engineering, Changsha University of Science and Technology, Changsha 410114, P.R. China
2. Key Laboratory for Crop Germplasm Innovation and Utilization of Hunan Province, Hunan Agricultural University, Changsha 410128, P.R. China
3. Hunan Institute of Food Quality Supervision Inspection and Research, Changsha 410111, P R. China