Residual Patterns of Insecticides Bifenthrin and Chlorfenapyr in Perilla Leaf as a Minor Crop

Jeon, Sang-Oh; Hwang, Jeong-In; Kim, Tae-Hwa; Kwon, Chan-Hyeok; Son, Younghwan; Kim, Dong-Sool; Kim, Jang-Eok

doi:10.5338/kjea.2015.34.3.29

Cited by 6 publications

(2 citation statements)

References 8 publications

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“…Several studies have reported that the dilution effect caused by crop growth is a major factor that contributes to the decline of pesticides 19 . In another study, Jeon et al 21 discovered that the decreasing residual level of bifenthrin in perilla leaves over time was due to the growth of the plant. Furthermore, Kim et al 22 reported that the half-lives of chlorpyrifos and procymidone in lettuce were 1.2 to 1.5 days and 1.3 to 2.6 days, respectively and the major cause of the decrease over time was the growth dilution factor.…”

Section: Resultsmentioning

confidence: 99%

Residual characteristics and safety assessment of the insecticides spiromesifen and chromafenozide in lettuce and perilla

Sardar

Byeon

Choi

et al. 2022

Sci Rep

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This study was performed to investigate the residual characteristics, safety assessment, and pre-harvest interval (PHI) of spiromesifen and chromafenozide in lettuce (Latuca sativa L.) and perilla (Perilla frutescens (L.) Britton) leaves. Samples were harvested periodically, extracted using QuEChERS method, and analyzed by LC-MS/MS. Average recoveries of spiromesifen and its metabolite BSN2060-enol and chromafenozide were ranged from 80.6 to 107.9%, with relative standard deviation < 10%. Spiromesifen and cromafenozide initial residues in lettuce were dissipated to 81.45 and 95.52% after 7 days, with half-lives of 2.89 and 1.69 days respectively. Values in perilla leaves were 76.68 and 61.27% after the same period, with half-lives of 4.25 and 6.30 days, respectively. Risk assessment results showed that %ADI (acceptable daily intake) of spiromesifen and chromafenozide was 6.83 and 0.56, in lettuce and 4.60 and 0.25% in perilla leaves, respectively. Theoretical maximum daily intakes of spiromesifen and chromafenozide were 67.49 and 3.43%, respectively, indicating that residues of both compounds pose no considerable health risks to consumers. This study provides data for setting maximum residue limits and PHIs for the safe use of spiromesifen and chromafenozide in lettuce and perilla.

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Section: Resultsmentioning

confidence: 99%

Residual characteristics and safety assessment of the insecticides spiromesifen and chromafenozide in lettuce and perilla

Sardar

Byeon

Choi

et al. 2022

Sci Rep

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“…연작으로 재배되는 특성에 따라 재배할 때 해충, 잡초, 병에 의한 손실을 줄이고 생산량과 품 질을 증가시키기 위해 다양한 농약을 사용하고 있다 [8]. 그러 나 쑥갓을 포함한 소면적 재배작물은 재배면적과 농약 사용 량이 적어 쌀과 같은 주요 재배작물에 비해 등록되어 활용 가 능한 농약 수가 제한적이다 [9]. 현재 우리나라는 PLS 제도를 시행하고 있어, 해당 작물에 등록되지 않은 농약이 검출되면 0.01 mg/kg의 잔류량 기준이 적용, 이를 초과하여 부적합으 로 판정된 농산물은 전량 폐기되어 농민에게 경제적인 영향 을 줄 수 있다 [10].…”

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Residual Characteristics and Risk Assessments of Metalaxyl-M and Dinotefuran in Crown Daisy

Song¹,

Yu²,

Kim³

et al. 2022

Korean Journal of Environmental Agriculture

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BACKGROUND: This study was performed to determine residual characteristics of soil-treated metalaxyl-M and dinotefuran in crown daisy and to evaluate the risks from intake of the residual pesticides in the crop. METHODS AND RESULTS: The pesticide granules were treated in soil on two levels, and the plants samples were collected 51 days after seeding. The analytes were extracted and partitioned using the QuEChERS extraction packet (MgSO 4 4 g, NaCl 1 g). The quantitative methods for metalaxyl-M and dinotefuran were validated in linearity, accuracy, and precision. Risk assessments of the pesticides were performed using Korea national nutrition statistics 2019. CONCLUSION(S):The residual concentrations of metalaxyl-M in crown daisy were 0.09-0.10 mg/kg (for the treatment at 6 kg/10 a) and 0.17-0.19 mg/kg (12 kg/10 a), respectively. The residual concentrations of dinotefuran in the crop were 0.53-0.75 mg/kg (3 kg/10 a) and 1.17-1.26 mg/kg (6 kg/10 a). The amounts of pesticides were less than MRL (Maximum Residue Limits) according to the Korean MFDS (Ministry of Food and Drug Safety). The HI (Hazard Index) of metalaxyl-M and dinotefuran for consumers was 0.0075% and 0.2250%, respectively. For females in the age between 50-64, the major consumer group, the HIs of the pesticides were <3%. Considering the consumption of crown daisy, they are not considered to be of toxicological concern.

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Correlation between physicochemical properties and biological half-life of triazole fungicides in perilla leaf

Lee

Kwak

Hwang

et al. 2019

JABC

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The biological half-life of pesticides applied on crops is the key indicator for ensuring the safety of agricultural products. The biological half-life is affected by the several factors like growing conditions of the crop, climate, application method, and physicochemical properties of pesticides. In this study, the biological half-life was calculated and the degradation rates of six triazole fungicides sprayed on perilla leaves were evaluated. Moreover, the statistical analysis confirmed the correlation between the biological half-life and physicochemical properties of six triazole pesticides. The recoveries of the six pesticides were between 84.8-104.9%, which satisfied the residual pesticide analysis criteria. The biological half-life of six pesticides sprayed on perilla leaves, calculated using the first-order kinetics model, ranged between 6.4-15.1 days. When the biological half-life and the physicochemical properties were correlated using the principal component analysis: pKa and Log P, the biological half-life was found to be affected by PC1. The correlation coefficient between biological half-life and physicochemical properties (pKa), calculated by Spearman rank-order correlation, was R 2 = −0.928 (p <0.01). Biological half-life has been shown to correlate with pKa. In conclusion, it can be used as a database for the relationship between biological half-life and physicochemical properties and will contribute to ensure safe supply of agricultural products.

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Residual Patterns of Insecticides Bifenthrin and Chlorfenapyr in Perilla Leaf as a Minor Crop

Cited by 6 publications

References 8 publications

Residual characteristics and safety assessment of the insecticides spiromesifen and chromafenozide in lettuce and perilla

Residual characteristics and safety assessment of the insecticides spiromesifen and chromafenozide in lettuce and perilla

Residual Characteristics and Risk Assessments of Metalaxyl-M and Dinotefuran in Crown Daisy

Correlation between physicochemical properties and biological half-life of triazole fungicides in perilla leaf

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