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KMID : 0380620130450060785
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Korean Journal of Food Science and Technology
2013 Volume.45 No. 6 p.785 ~ p.790
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Investigation of Hazards from Onions and Their Cultivation Areas to Establish a Good Agricultural Practices (GAP) Model
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Choi Young-Dong
Lee Chae-Won
Kim Jeong-Sook
Chung Duck-Hwa
Shim Won-Bo
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Abstract
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The purpose of this study was to investigate the hazards from onions and their cultivation areas. A total of 32 samples were collected from onion farms and tested for biological (sanitary indicators, and pathogenic bacteria and fungi) and chemical (heavy metals and pesticide residues) hazards. Aerobic bacteria and coliforms were detected at a level of 0.2- 7.1 log CFU/g (or mL) in the soil and agricultural water, 1.6-3.6 log CFU/g on surface of the onion, 0.0-6.0 log CFU/ hand (or cm2) on the workers’ hands, clothes, and gloves, and 4.7 log CFU/cm2 on the onion bags. Fungi were detected at a level of 0.0-5.0 log CFU/g (or mL, hand, or 100 cm2) in all the samples. Staphylococcus aureus was detected at a level of 1.2 log CFU/hand on the workers’ hands, the detection level of Bacillus cereus was up to 4.8 log CFU/g in the soil. However, Escherichia coli (and in particular strain O157:H7), Listeria monocytogenes, and Salmonella spp. were not detected. Although heavy metals were detected in the environment (in soil and agricultural water) and pesticide residues were detected in onion, the levels were lower than the regulation limits.
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KEYWORD
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good agricultural practices (GAP), onion, microbial contamination, pesticide residues, hazard
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