Destruction of Escherichia coli O157:H7 and Salmonella Enteritidis in Cow Manure Composting

摘要

Application of cow manure and composted manure in agricultural practice could potentially cause contamination of foodstufs with pathogenic bacteria such as Salmonella Enteritidis and Escherichia coli O157:H7. In this study, rifampicin - resistant (Rif~R) E. coli O157:H7 and Salmonella Enteritidis at a level of 7 log CFU/g of raw compost feed were used to determine the effect of a bench-scale composting system on their survival. Rif~R E. coli O157:H7 was not detected after 72 h of composting at 45 deg. C, and Rif~R Salmonella Enteritidis was not detected after 48 h.