1. State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China
2. Engineering Research Center of Phytosterol Microbial Transformation and Synthetic Biology of Hunan Province, Hunan Norchem Pharmaceutical Company, Ltd., Changsha 410000, P. R. China