Dr. Chitsiri Thongson Rachtanapun is an Associate Professor of Food Microbiology in the Department of Food Science and Technology, Faculty of Agro-Industry, Kasetsart University. She received a B.S. in Microbiology in 1996, an M.S. in Food Science in 1999, and a Ph.D. in Food Science in 2005 from Kasetsart University. She has been a Principal Investigator of the Advanced Technology for Food Safety Special Research Unit [SRU: Food Safety], Kasetsart University, since 2021. Her expertise area includes food microbiology, microbial food safety and quality, HACCP, and Preventive Control for Human Food. Current research foci include alternative/natural antimicrobial substances for food preservatives and sanitizers, hurdle technologies for controlling foodborne pathogens and shelf-life extension, and validation of food safety control measures.