1. Institute of Modern Biopharmaceuticals, State Key Laboratory Breeding Base of Eco-Environment and Bio-Resource of the Three Gorges Area, Ministry of Education, School of Life Sciences, Southwest University, Chongqing, China;
2. Department of Clinical Microbiology, College of Medical Laboratory Sciences, Omdurman, Islamic University, Omdurman, Sudan;
3. Institute of Bioorganic and Medical Chemistry, Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, China