1. Key Laboratory of Tropical Marine Bio‐resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences Guangzhou 510301 China
2. University of Chinese Academy of Sciences Beijing 100049 China
3. Guangdong Provincial Center for Disease Control and Prevention Guangdong Provincial Institute of Public Health Guangzhou 511430 China
4. Department of Chemical Engineering Pennsylvania State University University Park PA 16802‐4400 USA