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http://dx.doi.org/10.7585/kjps.2012.16.3.217

Residual characteristics of tolclofos-methyl treated by seed dressing in ginseng  

Noh, Hyun-Ho (Department of Environmental and Biological Chemistry, College of Agriculture, Life and Environmental Sciences, Chungbuk National University)
Lee, Jae-Yun (Department of Environmental and Biological Chemistry, College of Agriculture, Life and Environmental Sciences, Chungbuk National University)
Park, So-Hyun (Department of Environmental and Biological Chemistry, College of Agriculture, Life and Environmental Sciences, Chungbuk National University)
Lee, Kwang-Hun (Residue Technical Research Institute, Dong Bang Argo Corp.)
Park, Hyo-Kyoung (Environmental Toxicology Division, Toxicological Research Center, Hoseo University)
Oh, Jae-Ho (National Institute of Food and Drug Safety Evaluation)
Im, Moo-Hyeog (Korea Food and Drug Administration)
Kwon, Chan-Hyeok (Korea Food and Drug Administration)
Lee, Joong-Keun (Korea Health Industry Development Institute)
Woo, Hee-Dong (Korea Health Industry Development Institute)
Kwon, Ki-Sung (Busan Regional Food and Drug Administration)
Kyung, Kee-Sung (Department of Environmental and Biological Chemistry, College of Agriculture, Life and Environmental Sciences, Chungbuk National University)
Publication Information
The Korean Journal of Pesticide Science / v.16, no.3, 2012 , pp. 217-221 More about this Journal
Abstract
This study was carried out to evaluate residual characteristics of tolclofos-methyl in ginseng and elucidate the reason for its high detection rate from fresh ginseng selling at markets. Seeds of ginseng were sowed after seed dressing with tolclofos-methyl and after a year of growth, the young seedlings were transplanted to field. They were then harvested annually until three-years of growth and the pesticide residue was analyzed in them. LOD and LOQ of the pesticide were 0.001 and 0.003 mg/kg, respectively. Recovery test was carried out to validate the analytical method for tolclofos-methyl in ginseng. The ginseng seedlings were fortified with the test pesticide at the level of LOQ, ten times of LOQ and maximum residue concentration of tolclofos-methyl. Its recovery ranged from 77.37 to 100.16%. Residual concentration of tolclofos-methyl in ginseng seedlings just before transplanting and two-year-old ginseng were from 7.58 to 8.05 and from 6.46 to 6.79 mg/kg, respectively. In case of three-year-old ginseng, it was found to be from 4.18 to 4.35 mg/kg. As a result of annual pesticide residue analysis, concentration of the pesticide was found to decrease time-coursely in ginseng. This may be due to decomposition and increasing of fresh weight of the ginseng during the cultivation periods of three years.
Keywords
Ginseng; Tolclofos-methyl; Seed dressing; Pesticide residue;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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