1. College of Life Science, Anhui Normal University, Wuhu, P.R. China;
2. School of Life Science and Biotechnology, China Pharmaceutical University, Nanjing, P.R. China;
3. School of Pharmacy, Wannan Medical College, Wuhu, P.R. China;
4. Department of Botany and Microbiology, Faculty of Science, Al Azhar University, Assiut, Egypt