1. Department of Pharmaceutics, China Pharmaceutical University, Jiangsu 210009, P. R. China
2. Department of Microbiology, China Pharmaceutical University, Jiangsu 210009, P. R. China
3. School of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, P. R. China
4. Institute of Advanced Drug Delivery Technology, Jiangsu 210032, P. R. China