• Title/Summary/Keyword: Pesticide residues

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Development of Microbial Bioassay for Detection of Pesticide Residues (미생물을 이용한 농약잔류 분석법 개발)

  • 백수봉;양창술;오연선
    • Korean Journal Plant Pathology
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    • v.10 no.4
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    • pp.297-304
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    • 1994
  • This study was carried out to develop bioassay for detection of pesticide residues in agricultural products by using the soil microbial isolates sensitive to pesticides. One hundred bacterial isolates and eighty five fungal isolates were obtained from soil and their sensitivity to 10 ppm of several pesticides was examined in vitro. Five bacterial isolates and three fungal isolates were found sensitive to organochloride fungicide and two fungal isolates sensitive to organocopper fungicide. Among these isolates, B46, B93 and F67 were tested to find out the difference in sensitivity according to the methods of fungicide treatment. All of the isolates were found sensitive to 10 ppm of organochloride fungicides mixed directly in PDA. But they were found insensitive to the fungicide mixed in PDA after filtering through membrane filter. In case of organocopper fungicide, the isolates were found sensitive only when it was treated in PDA. And their sensitivity showed difference among various kinds of organochloride fungicides. B46 and B93 were employed to check the possibility as the agent for detection of the pesticidal residues in twenty eight agricultural products including rice. It was found that all samples had not residues because the samples did not inhibit the growth of isolates. When organochloride fungicides were applied to the above products, it was possible to detect the residues in fruits and vegetables at the concentration of 10 ppm, but not in starch-rich grains. B46 and B93 were identified as Bacillus sp. according to their bacterial characteristics in culture.

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Monitoring of Pesticide Residues and Preservatives in Cosmetics Using Natural Materials (천연물질 사용 화장품의 잔류농약과 보존제 모니터링)

  • Park, Eun-Mi;Um, Mi-Na;Kim, Beom-Ho;Cho, Sang-Hun;Park, Sin-Hee;Jo, Hyun-Ye;Yoon, Mi-Hye;Lee, Jong-Bok
    • Journal of Food Hygiene and Safety
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    • v.27 no.3
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    • pp.257-263
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    • 2012
  • Cosmetics using natural materials which was purchased in retail stores, distributed in Gyeonggi province(32 samples) and online through internet(24 samples) were analyzed by pesticide residues and target preservatives for assessing the safety of it. Natural or organic certifications was identified in 22 samples among 56 samples and most of them were Ecocert. Pesticide residues was detected in 3 samples among 56 samples and each compound and concentration was permethrin(0.6 mg/kg), tricyclazole(11.7 mg/kg) and malathion(0.05 mg/kg). All of it was purchased through internet. Target preservatives was detected in 13 samples among 56 samples and one of them was over the maximum allowed concentration and the rest of them were within the maximum allowed concentration of the respective preservatives. The compound which was over the maximum allowed concentration was benzoic acid and compounds which were within the maximum allowed concentration were sorbic acid, benzoic acid and methylparaben. They were all identified substances in products and the number of detected preservatives in retail stores were higher than online samples purchased through internet. As a result of this study, The method of analyzing pesticide residues and limit in cosmetics using natural materials should be set up as soon as possible and the monitoring about preservatives in cosmetics using natural materials should be conducted on continuously.

Dietary Exposure Assessment by Ages due to Pesticide Residues in Vegetables (채소류 섭취에 따른 연령별 잔류농약 노출평가)

  • Jang, Mi-Ra;Moon, Hyun-Kyung;Kim, Tae-Rang;Yuk, Dong-Hyun;Kim, Eun-Hee;Hong, Chae-Kyu;Choi, Chae-Man;Hwang, In-Sook;Kim, Jung-Hun;Kim, Moo-Sang;Chae, Young-Zoo
    • The Korean Journal of Pesticide Science
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    • v.16 no.1
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    • pp.21-27
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    • 2012
  • Dietary exposure assessment by ages was performed in this study using pesticide residues data examined in vegetable commodities collected in Seoul from 2007 to 2009, and the vegetable intakes for Seoulites which were obtained after analysing the Korea National Health and Nutrition examination survey data of 2008. There was a statistical difference for vegetable intakes by ages (P<0.001). Vegetable intake was the highest in 40~59 age group and was the lowest in under 5 age group. The %ADI was calculated using vegetable pesticide residues and vegetable intake for Seoulites by ages. Considering below 1 of the %ADI by ages, the risk caused by pesticide residues in vegetables was very low and vegetable intake was safe.

A Study of Current Status on Pesticide Residues in Commercial Dried Agricultural Products (서울시 유통 건조농산물 중의 농약잔류 실태 연구)

  • Kim, Bog-Soon;Park, Seoung-Gyu;Kim, Mi-Sun;Cho, Tae-Hee;Han, Chang-Ho;Jo, Han-Bin;Choi, Byung-Hyun;Kim, Sung-Dan
    • Korean Journal of Food Science and Technology
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    • v.39 no.2
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    • pp.114-121
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    • 2007
  • The purpose of this study was to investigate 253 kinds of pesticide residues in 58 commercial dried agricultural products in Seoul. The determinations of the pesticide residues were performed using multiresidue methods and were carried out by a gas chromatography-nitrogen phosphorus detector (GC-NPD), an electron capture detector ($GC-{\mu}ECD$), a mass spectrometry detector (GC-MSD) and high performance liquid chromatography-ultraviolet detector (HPLC-UV), and a fluorescence detector (HPLC-FLD). The pesticide residue detection rate in the commercial dried agricultural products was 24.1% (14 of 58 samples). Twelve pesticide residues without maximum residue limits (MRLs) were detected. In the vegetable groups, the frequency of pesticide residues was found to be in the increasing order of dried fruiting vegetables > dried leafy vegetables > dried stalk and stem vegetables. The pesticides used on dried red pepper in the dried fruiting vegetables were varied (7 kinds) and numerous (4 of 8 samples). The pesticide types detected in the commercial dried agricultural products were in the order of pyrethroid > organochloride > organophosphorus and insecticide > fungicide > herbicide ${\cdot}$ nematicide. The primary pyrethroid pesticide detected was cypermethrin. According to the producing areas of products, large numbers of pesticide residues were found in the order of Korea, China, North Korea, USA, and Vietnam.

Revision in the Codex Classification of Foods and Animal Feeds (2013)

  • Lee, Mi-Gyung
    • The Korean Journal of Pesticide Science
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    • v.18 no.1
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    • pp.48-51
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    • 2014
  • Since the year of 2006 when the extended revision of the Codex Classification of Foods and Animal Feeds was undertaken, considerable progresses have been made in revising the Classification. This paper aimed to summarize the present status on revision of the Codex Classification of Foods and Animal Feeds, focusing remarkable achievements such as 1) the draft revision of the Codex Classification for the fruit commodity group and 2) the draft Principles and Guidance on the Selection of Representative Commodities for the Extrapolation of Maximum Residue Limits for Pesticides to Commodity Groups, adopted by the Codex Alimentarius Commission in 2012. Additionally, it included information on lists of crop group or subgroup which are holding at Step 7 and were adopted at Step 5, and further have not been yet discussed by the Codex Committee on Pesticide Residues. These information will be very helpful for a pesticide regulatory regime.

Procedures in Establishing Residue Limits of Pesticides on Food Crops in Korea (한국에서 농산물중 농약잔류 허용기준의 설정절차)

  • Lee, Mi-Gyung;Hong, Moo-Gi;Park, Kun-Sang;Choi, Dong-Mi;Lim, Moo-Hyuk;Lee, Su-Rae
    • Korean Journal of Food Science and Technology
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    • v.37 no.4
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    • pp.685-694
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    • 2005
  • Korean practices in tolerance setting of pesticide residues on food crops were compiled with an effort to harmonize with international standards. Based on scientific data including historical background, limit setting protocols, adoption of ADI values, food factors, nation's body weights, and regulatory margins which are required for the setting of maximum residue limits, necessary measures to be taken by Korean regulatory authorities were proposed.

Reduction of Pesticide Residues in the Production of Red Pepper Powder

  • Chun, Mi-Hwa;Lee, Mi-Gyung
    • Food Science and Biotechnology
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    • v.15 no.1
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    • pp.57-62
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    • 2006
  • Six organophosphorus, one organochlorine, and three synthetic pyrethroid pesticides were analyzed for their residues during washing and hot-air drying of red peppers conducted in the production of powder. The residue ratio in organophosphorus pesticides was 33% in chlorpyrifos, 31 % in diazinon, 50% in methidathion, 80% in EPN, 28% in fenitrothion, and 60% in profenofos. The ratio in pyrethroids was 109% in cypermethrin, 102% in deltamethrin, and 106% in fenvalerate. That in organochlorine was 56% in ${\alpha}$-endosulfan and 90% in ${\beta}$-endosulfan. The results were greatly different between organophosphorus and pyrethroid pesticides. UV irradiation along with hot-air drying brought about a remarkable reduction of the residues, up to 70% as compared with hot-air drying only. The removal effect was most remarkable in pyrethroids, which are hardly removed by hot-air drying. The color of the pepper was not changed during UV irradiation. The use of oxidizing agents such as hydrogen peroxide or chlorine dioxide during washing did not show a remarkable removal of residues. The residue ratio was not affected whether the pesticide is contaminated artificially or naturally.

Information Resources for the Establishment of Tolerances on Pesticide Residues in Golf Courses (골프장의 농약잔류 허용기준 설정을 위한 자료)

  • Lee, Su-Rae;Han, Dae-Sung;Lee, Mi-Gyung
    • Korean Journal of Environmental Agriculture
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    • v.15 no.2
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    • pp.262-272
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    • 1996
  • The objective of this paper is to present relevant information and for proposing legal standards on pesticide residues around golf courses. Among 67 pesticide ingredients used for the courses in Korea, 30 items necessary for standard setting were selected and theoretical residue limits were computed. Pesticide residue limits applicable to golf courses in Korea were for 16 pesticides in run-off water on the health and ecotoxicological bases and in soil on the health basis, as selected by practical use pattern. It is recommended to accumulate scientific data by continuous research efforts in order to justify the pesticide residue limits in run-off water and soils of golf courses.

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