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http://dx.doi.org/10.7585/kjps.2014.18.2.88

Assessment of Pre-Harvest Environmental Factors in Domestic Production of Organic Lettuce  

Namgung, Min (Department of Applied Biology, College of Agriculture and Life Sciences, Kangwon National University)
Kim, Beom Seok (Department of Applied Biology, College of Agriculture and Life Sciences, Kangwon National University)
Heo, Seong Jin (Environment Friendly Agricultural Products Safety Center, Kangwon National University)
Choi, Yong Beom (Environment Friendly Agricultural Products Safety Center, Kangwon National University)
Hur, Jang Hyun (Department of Biological Environment, College of Agriculture and Life Sciences, Kangwon National University)
Park, Duck Hwan (Department of Applied Biology, College of Agriculture and Life Sciences, Kangwon National University)
Publication Information
The Korean Journal of Pesticide Science / v.18, no.2, 2014 , pp. 88-94 More about this Journal
Abstract
Among pre-harvest environmental factors, increasing attention has been paid to the effects of chemical and microbiological factors on fresh produce. The occurrence and prevalence of these factors have been usually studied with regard to the final products at the post-harvesting stage and/or when they are sold in the market. However, the origin and routes of transmission of both factors remain to be clarified. In the present study, we examined the contamination levels of food-borne pathogens and chemical factors such as pesticide residues and heavy metals in 83 and 43 samples, respectively, including various soil, water, and fertilizer samples, as well as post-harvested and processed samples. Among the organic farming samples, only one pesticide, dimethomorph, was detected in the soil sample, however no pesticides were observed from any other samples in organic farming system. Thus, it was thought that might be contaminated from conventional farm land in the vicinity. Whereas many pesticide residues were detected in conventional farming systems such as soil, fertilizer, water, and fresh produce as expected. Furthermore, heavy metals detected from all tested samples did not shown contamination levels higher than the standard limit. We comparatively assessed the levels of contamination by food-borne pathogens on the samples from organic and conventional farming systems, and found aerobic bacteria at approximately 7 log CFU/g, with no significant differences observed between the two systems. Coliforms were present at lower levels than aerobic bacteria. No human pathogens were present among the coliforms detected, indicating that these bacteria are saprophytes without the ability to cause food-borne illnesses. In contrast, among the high-risk food-borne pathogens, only sporadic cells of Bacillus cereus were found on samples of organic farming system. These data extend previous findings that the most prevalent food-borne pathogen is B. cereus and demonstrate that it spreads to whole living plants via soil.
Keywords
lettuce; organic products; pre-harvest; safety;
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Times Cited By KSCI : 6  (Citation Analysis)
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1 Cho, K. W., J. H. Park, J. W. Kim, J. Y. Yoon, H. R. Moon and K. S. Lee (2013) Establishment of pre-harvest residue limit (PHRL) of methoxyfenozide and novaluron on peaches. Korean J. Pestic. Sci. 17(1):6-12.   과학기술학회마을   DOI   ScienceOn
2 Jo, M. J., A. R. Jeong, H. J. Kim, N. Lee, S. W. Oh, Y. J. Kim, H. S. Chun and M. S. Koo (2011) Microbiological quality of fresh-cut produce and organic vegetables. Korean J. Food Sci. Technol. 43(1):91-97.   과학기술학회마을   DOI   ScienceOn
3 Kim, K. J., D. S. Kim, S. J. Heo, H. J. Ham and J. H. Hur (2013) Establishment of pre-harvest residue limit (PHRL) of emamectin benzoate during cultivation of amaranth. Korean J. Pestic. Sci. 17(2):77-83.   과학기술학회마을   DOI   ScienceOn
4 Lee, J. H., H. W. Park, Y. S. Keum, C. H. Kwon, Y. D. Lee and J. H. Kim (2008) Dissipation pattern of boscalid in cucumber under greenhouse condition. Korean J. Pestic. Sci. 12(1):67-73.   과학기술학회마을
5 Lee, Y. J., K. Y. Kwang, D. J. Won, G. H. Gil and K. S. Lee (2003) Residue pattern of procymidone, chlorpyrifos and cypermethrin in peaches during cultivation and storage period. Korean J. Environ. Agric. 22(3):200-226.   과학기술학회마을   DOI
6 Lim, J. S., J. H. Hong, C. R. Lee, K. T. Han, Y. R. Lee and K. S. Lee (2011) Establishment of pre-harvest residue limit (PHRL) of insecticide chlorfenapyr and fungicide fenarimol during cultivation on chwinamul (Aster scaber). Korean J. Environ. Agric. 30(1):52-59.   과학기술학회마을   DOI   ScienceOn
7 Solberg, M., J. J. Buchalew, C. M. Chen, D. W. Schaffner, K. O'Neill, J. McDowell, L. S. Post and M. Boderck (1990) Microbial safety assurance system for foodservice facilities. Food Technol. 44:68-72.
8 Watanabe, Y., K. Ozasa, J. H. Mermin, P. M. Griffin, K, Masuda, S. Imashuku and T. Sawada (1999) Factory outbreak of Escherichia coli O157:H7 infection in Japan. Emerg. Infect. Dis. 5(3):424-428.   DOI   ScienceOn
9 Barak, J. D. and B. K. Schroeder (2012) Interrelationships of food safety and plant pathology: The life cycle of human pathogens on plants. Annu. Rev. Phytopathol. 50:241-266.   DOI   ScienceOn