Optimization of Iron Supplementation for Enhanced Detection of Salmonella Enteritidis in Eggs

摘要

Mixed raw egg contents were inoculated with approximately 10 CFU of Salmonella Enteritidis and supplemented with 0 to 7 mg of FeSO_4 per g of egg contents. Egg contents were then incubated at 37 deg. C, and Salmonella Enteritidis colonies were enumerated for up to 106 h. Iron supplementation significantly enhanced the growth of Salmonella Enteritidis. Within the first 24 h of incubation, the optimum iron level for Salmonella Enteritidis growth in egg contents was between 0.2 and 2 mg of FeSO_4 per g of egg contents.