• Title, Summary, Keyword: pesticide residue

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Analysis of Variability Factors in Establishing Pesticide Residue Limits on Food Crops (농산물중 농약잔류 허용기준 설정시의 변이계수 분석)

  • Lee, Mi-Gyung;Lee, Su-Rae
    • Korean Journal of Food Science and Technology
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    • v.37 no.3
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    • pp.492-497
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    • 2005
  • In establishing legal limits of pesticide residues, various default values are employed to compensate for unavoidable variability in data. Because permissible errors in residue analysis reach ${\pm}30-40%$ RSD, maximum residue limits (MRLs) follow geometric progression. According to 5-yr period JMPR reports, variability factor (ratio of highest to median values) in field residue trials was 3.8-fold in 486 crop-pesticide combinations and round-up effort from highest residue to MRL was 1.5-fold, whereas regulatory margin (ratio of MRL to highest residue) used in Korea was 4.8-fold in 822 crop-pesticide combinations; Korean MRLs will be set at higher levels as compared with Codex limits if these margins are employed. Validation studies to compare and harmonize Korean and Codex MRLs of pesticide residues on food crops should be undertaken.

Current status on pesticide residues in commercial agricultural commodities in Seoul area (서울시내 유통 농산물에서의 농약잔류 실태)

  • 한선희
    • Proceedings of the Korea Society of Environmental Toocicology Conference
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    • pp.49-53
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    • 2003
  • Through the five years analysis of monitoring data on pesticide residues from 1998 to 2002, current status on pesticide residues on commercial agricultural products in Seoul area was evaluated. The rate of over maximum residue limits(MRLs) has been decreased into 5.8% in 1998, 2.5% in 1999, 1.6% in 2000, 1.4% in 2001, and 1.5% in 2002 gradually, where as total sample numbers analyzed increased 1,300 in 1998, 4,200 in 1999, 5740 in 2000, 6,160 in 2001, and 5,440 in 2002 annually, The pesticide which frequently detected in samples were endosulfan, procymidone, chlorotalonil, vinclozolin, and chlorpyriphos and pesticide found over MRLs were procymidone, vinclozolin, endosulfan and etc.

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Dissipation pattern of pesticide residues in/on different varieties of lettuce applied with foliar spraying under greenhouse condition (시설재배에서의 상추품종별 살포농약의 소실양상)

  • Lee, Hee-Dong;Ihm, Yang-Bin;Kwon, Hye-Young;Kim, Jin-Bae;Kyung, Kee-Sung;Kim, Chan-Sub;Oh, Byung-Youl;Im, Geon-Jae;Kim, Jang-Eok
    • The Korean Journal of Pesticide Science
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    • v.9 no.4
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    • pp.354-358
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    • 2005
  • The study was carried out to investigate dissipation pattern of pesticide residue in/on different varieties of lettuce applied with foliar spraying under greenhouse. The initial deposited amount of alpha-cypermethrin and imidacloprid in/on the crop was entirely corresponded with shape of the crop. Dissipation of deposited pesticide residue was supposed to be related with degradation by sunlight and wash off by watering rather than dilution effect by biomass increase. The crop grouping in leaf vegetables has to be carefully considered even in lettuce for dissipation pattern of pesticide residue; head type and leafy type.

Analysis of Pesticide Contaminants in Food (식품 중 잔류농약의 분석)

  • 김종규
    • Journal of Environmental Health Sciences
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    • v.19 no.1
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    • pp.90-93
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    • 1993
  • Increasing Public Concern : Pesticide residue is probably one of the fastest growing problems in regard to environmental contamination. Pesticide use in agriculture in this century has produced certain benefits, including a decrease in crop waste and an increase in crop yields and food quality. However, pesticide use also creates problems of having effects on the environment and remaining in food chain. The presence of pesticide residue in food, water, and soil has aroused public concern over potential health hazards. Despite information provided by national and private level agencies suggesting that food is safe, consumer groups worldwide are demanding assurance as to the safely of agricultural products.

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Establishing residue limits and GAP in the use of pesticides (농약사용에서의 잔류기준 설정과 GAP)

  • Lee, Su-Rae
    • The Korean Journal of Pesticide Science
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    • v.9 no.2
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    • pp.113-121
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    • 2005
  • Consumer protection and prevention of foodborne diseases are essential elements of food safety program for every country The food safety program proposed by WHO was introduced and the importance of GAP in establishing residue limits of intentional additives in food production was emphasized. The procedures and differences in establishing maximum residue limits of pesticides on food crops by Codex Alimentarius Commission and Korea were explained. Finally, considerations in harmonization of Korean standards with Codex MRLs were suggested.

A Study on the Development of High Density Ozone Water Cleaning System for Herb Medicine (고농도 오존수를 이용한 한약재 세척기기에 대한 연구)

  • Kim, Jeong-Ho;Bang, Byeong-Hun;Lee, Sang-Hwa;Kim, Sung-Hee
    • Journal of Acupuncture Research
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    • v.29 no.2
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    • pp.9-14
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    • 2012
  • Objectives : This study was designed to evaluate the pesticide residue of herb medicine through high density ozone water cleaning system. Materials and Methods : We purchased ginseng(Panax ginseng) on market and sprayed pesticides (Diazinon) on ginseng. We analyzed pesticide residue according to washing methods(untreated, ozone water cleaning, ultrasonic cleaning, Water cleaning). As a result of each washing methods, in ozone water cleaning method pesticide residue was much less remained than in Ultrasonic Cleaning method and water cleaning method. Conclusions : High density ozone water cleaning is the best method for removing pesticides of herbal medicine.

Estimating Concentrations of Pesticide Residue in Soil from Pepper Plot Using the GLEAMS Model

  • Jin, So-Hyun;Yoon, Kwang-Sik;Shim, Jae-Han;Choi, Woo-Jung;Choi, Dong-Ho;Kim, Bo-Mi;Lim, Sang-Sun;Jung, Jae-Woon;Lee, Kyoung-Sook;Hong, Su-Myeong
    • Korean Journal of Environmental Agriculture
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    • v.30 no.4
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    • pp.357-366
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    • 2011
  • BACKGROUND: Mathematical model such as GLEAMS have been developed and successfully applied to upland fields to estimate the level of pesticide residues in soil. But, the GLEAMS model rarely applied to the Korean conditions. METHODS AND RESULTS: To evaluate pesticide transport in soil residue using the GLEAMS model from pepper plot, Alachlor, Endosulfan, Cypermethrin and Fenvalerate were applied for standard and double rate. Soil sampling was conducted and decaying patterns of pesticides were investigated. Observed climate data such as temperature and irrigation amount were used for hydrology simulation. The observed pesticide residue data of 2008 were used for parameter calibration, and validation of GLEAMS model was conducted with observed data of 2009. After calibration, the $K_{oc}$ (Organic carbon distribution coefficient) and WSHFRC (Washoff fraction) parameters were identified as key parameters. The simulated concentrations of the pesticides except Fenvalerate were sensitive to $K_{oc}$ parameter. Overall, soil residue concentrations of Alachlor, Cypermethrin and Fenvalerate were fairly simulated compared to those of Endosulfan. The applicability of the GLEAMS model was also confirmed by statistical analysis. CONCLUSION(s): GLEAMS model was eligible for evaluation of pesticide soil residue for Alachlor, Cypermethrin and Fenvalerate.

Information Resources for the Establishment of Tolerances on Pesticide Residues in Water Quality (수질중 농약잔류 허용기준 설정을 위한 근거자료)

  • Lee, Su-Rae;Kim, Yong-Hwa;Lee, Mi-Gyung
    • Korean Journal of Environmental Agriculture
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    • v.14 no.3
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    • pp.351-373
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    • 1995
  • The objective of this paper is to present relevant information and data from domestic and foreign references and to propose legal standards on pesticide residues in order to mitigate the pesticide contamination in the water environment. Among 200 pesticide ingredients in use in Korea, items necessary for standard setting were selected and theoretical residue limits were computed. The results are summarized as follows. In advanced countries, drinking water standards are established on the basis of health index ADI and water intake, whereas standards for surface water are established temporarily on the basis of different parameters, inconsistent with different countries. Pesticide residue limits applicable in Korea were proposed for 24 pesticides in drinking water(health basis) and for 25 pesticides in surface water(ecotoxicological basis), as selected by risk priority. It was recommended to accumulate scientific data by persistent research efforts in order to maintain the justification of the pesticide residue limits in water and relevant research topics to be undertaken in future were proposed.

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A comparative study of management system of unregulated agricultural pesticides in Korea, the European Union, and the United States of America: a review (비규제 농약 관리를 위한 한국, 유럽, 미국의 농약관리체계 비교분석)

  • Nam, Sun-Hwa;Kwak, Jin Il;Kim, Dasom;An, Youn-Joo
    • Journal of Applied Biological Chemistry
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    • v.61 no.2
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    • pp.195-204
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    • 2018
  • Pesticide residue in the eggs in the market has become a significant problem in Korea. In particular, the detection of fipronil indicated that unregulated pesticide residue can be present in livestock products, including eggs. Institutionally unregulated pesticides are a risk to human health and the ecosystem. In this study, we analyzed the system of agricultural pesticide management in Korea, the European Union, and the United States of America (USA) and discussed the problems of the Korean management system and the possible improvement directions. Based on the analysis, we considered three tasks: registration of pesticides, pesticide residue levels in food, and pesticide residue levels in environmental media. The registration of pesticides was conducted by the Ministry of Agriculture, Food, and Rural Affairs in Korea; the Directorate-General for Health and Food Safety in the European Commission (EC); and the US Environmental Protection Agency (USEPA) in the USA. The work regarding pesticide residue levels in food was conducted by the Ministry of Food and Drug Safety in Korea, the Directorate-General for the Health and Food Safety in the EC, and the USEPA and Food and Drug Administration in the USA. The work regarding pesticide residue levels in environmental media was conducted by the Ministry of Environment in Korea, the Directorate-General for Environment in the EC, and the USEPA in the USA. Therefore, Korea should review the extension of pesticide residue standards in the environmental media for strengthening the system of management of unregulated agricultural pesticides.

Replacement of Hexachlorocyclohexane to Environmentally Friendly Biosurfactant as Precursor for the Production of Biosurfactant from Pseudomonas

  • Anu Appaiah, K.A.;Parvathy, A.;Mathew, Mariam;Karanth, N.G.K.
    • Journal of Microbiology and Biotechnology
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    • v.21 no.8
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    • pp.858-860
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    • 2011
  • Production of biosurfactant can be substantially increased by the addition of precursors like vegetable oils, petroleum products, and other water-insoluble substances. Pseudomonas Ptm+ strain produces biosurfactant in the presence of hexachlorocyclohexane (HCH), which specifically emulsifies HCH, a recalcitrant organochlorine pesticide. Addition of previously produced crude biosurfactant by the same organism as a precursor instead of HCH increased production of biosurfactants with a decrease in the total fermentation time from 32 to 24 h. The main objective of this paper was to find alternatives for HCH as an inducer.