1. GuangDong Engineering Technology Research Center for the Development and Utilization of Mangrove Wetland Medicinal Resources, Guangdong Medical University, Zhanjiang, Guangdong 524023, China
2. School of Chemistry and Chemical Engineering, Lingnan Normal University, Zhanjiang 524048, P. R. China
3. The Marine Biomedical Research Institute of Guangdong, Zhanjiang, Guangdong 524023, China