Survival, Elongation, and Elevated Tolerance of Salmonella enterica Serovar Enteritidis at Reduced Water Activity

摘要: Growing microorganisms on dry surfaces, which results in exposure to low water activity (aw), may change their normal morphology and physiological activity. In this study, the morphological changes cell viability of Salmonella enterica serovar Enteritidis challenged a w were analyzed. The indicated that reduced aw induced filamentation cells. amount filamentous cells at 0.94 was up 90% total number Surviving maintained membrane integrity after for 21 days. Furthermore, prechallenged w, obtained with an ionic humectant, demonstrated higher resistance sodium hypochlorite than control These resistant are able survive disinfection more efficiently can therefore cause contamination foods coming contact surfaces. This points need increased attention cleaning surfaces household environments procedures processing plants. Copyright ©, International Association Food Protection.