Effect of temperature storage on the survival of Escherichia coli and Salmonellae in manure
2010
Wipawadee Ontoum(Kasetsart University, Bangkok (Thailand). Faculty of Agro-Industry. Department of Food Science and Technology) | Namthip Khantayaporn(Kasetsart University, Bangkok (Thailand). Faculty of Agro-Industry. Department of Food Science and Technology) | Warapa Mahakarnchanakul(Kasetsart University, Bangkok (Thailand). Faculty of Agro-Industry. Department of Food Science and Technology)
In 2005, the incidence of Salmonella spp. and Escherichia coli contaminated in fresh produce for exporting affected on economy of Thailand. These significance foodborne pathogens indicate the possible of human and animal feces in foods and may lead to foodborne illnesses. Manure using as fertilizer is found to be the source of contamination. The investigation of the two pathogenic bacteria survival in 4 types of commercial manure stored for 21 days at 25 deg C and 40 deg C were conducted. At 25 deg C, E. coli cells in bat manure and swine manure could survive for 12 days, while E. coli cells in cattle manure and chicken manure could survive shorter as 6 days. At 40 deg C, E. coli in bat manure survived for 6 days, but could not detect E. coli in swine manure, cattle manure and chicken manure since the first day of storage. Meanwhile, Salmonella enteritica serovar Hvittingfoss and Augustenborg in bat manure and swine manure survived for 21 days at 25 deg C, and survived for 18 and 15 days in cattle manure and chicken manure, respectively. At 40 deg C these two serovars survived in bat manure and cattle manure for 6 days, while cells could not detect in swine and chicken manure since the third and first day of storage. Temperature and manure types affected on the survival of these two pathogens and provide information that exposing fertilizer on the sun-light assisted to reduce Salmonella and E. coli which may contaminate in those fertilizers.
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