Investigation of Microbiological Safety of on-farm Produce in Korea
2017
Kim, W.I., National Institute of Agricultural Sciences, Rural Development Administration, Wanju, Republic of Korea | Gwak, M.G., National Institute of Agricultural Sciences, Rural Development Administration, Wanju, Republic of Korea | Jo, A.R., National Institute of Agricultural Sciences, Rural Development Administration, Wanju, Republic of Korea | Ryu, S.D., National Institute of Agricultural Sciences, Rural Development Administration, Wanju, Republic of Korea | Kim, S.R., National Institute of Agricultural Sciences, Rural Development Administration, Wanju, Republic of Korea | Ryu, S.H., National Institute of Agricultural Sciences, Rural Development Administration, Wanju, Republic of Korea | Kim, H.Y., Rural Development Administration, Jeonju, Republic of Korea | Ryu, J.G., National Institute of Agricultural Sciences, Rural Development Administration, Wanju, Republic of Korea
Foodborne disease outbreaks associated with produces have been increasing in occurrence worldwide. This study investigated microbial contamination levels on thirteen kinds of agricultural products from farms stage to evaluate potential hazards associated with foodborne illness. A total of 1,820 samples were collected in major cultivating area from 2013 through 2015, and analyzed to enumerate aerobic bacterial counts, coliforms/E. coli, Bacillus cereus and Staphylococcus aureus. In addition, the prevalence study for four kinds of microorganisms (Escherichia coli, E. coli O157:H7, Salmonella spp. and Listeria monocytogenes) was performed on each sample. Aerobic bacterial counts ranged from 0.01 to 7.18 log CFU/g, with the highest bacterial cell counts recorded for watermelon. Coliforms were detected in 651 samples (35.8%) with a minimum of 0.01 log CFU/g and a maximum of more than 5 log CFU/g. B. cereus was detected in 169 samples (9.3%) ranging from less than 0.01 to 2.48 log CFU/g among total samples analyzed. S. aureus was detected in 14 samples (0.7%) with a minimum of 0.01 log CFU/g and a maximum of 1.69 log CFU/g. E. coli was detected in 101 samples (5.5%) among 1,820 samples. E. coli O157:H7, Salmonella spp. and L. monocytogenes were not detected in any of the samples. The microbial contamination levels of several agricultural products determined in this study may be used as the fundamental data for microbiological risk assessment (MRA).
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