Residue Behavior of Methoxyfenozide and Pymetrozine in Chinese Cabbage and Their Health Risk Assessment

Wang, Wenting; Cho, Yujin; Song, Jong-Wook; Kim, Yeong-Jin; Seo, Jong‐Su; Kim, Jong-Hwan

doi:10.3390/foods11192995

Cited by 10 publications

(8 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Leaf vegetables such as lettuce spinach have been known to be a typical plant that takes pesticide moderately [ 34 , 35 ], but dissipation of pesticide is generally faster in lettuce than in other plants [ 36 ]. The residue behavior of methoxyfenozide and pymetrozine in Chinese cabbage was conducted for their risk assessment, demonstrating temperature-dependent dissipation, leading to low health risk [ 37 ]. The uptake of total soil-residual dinotefuran by lettuce has recently demonstrated that about a 24–28% level of initial concentration was translocated into leaves 30 and 60 days after treatment [ 38 ].…”

Section: Discussionmentioning

confidence: 99%

Uptake of Soil-Residual Diazinon by Rotational Lettuce under Greenhouse Conditions

Yoon

Lim

Lee

et al. 2022

Foods

View full text Add to dashboard Cite

Pesticide residue is an increasing concern in rotational crop practices. The pesticide used for the primary crop may re-enter the secondary crop, thus exceeding pesticide levels set by the positive list system (PLS). As such, evaluation of pesticide residue translocated into rotational crops is required for ensuring pesticide safety. In this study, we investigated the residue pattern of diazinon translocated into lettuce as a typical rotational crop in Korea. Diazinon was used to treat greenhouse soil at the maximum annual application rate before crop planting. Diazinon residues in soil and lettuce were investigated using liquid chromatography/tandem mass spectroscopy and a modified quick, easy, cheap, effective, rugged, safe (QuEChERS) method. The limit of quantitation (LOQ) of diazinon was found as 0.005 mg/kg for the plant and soil samples. The recovery of diazinon at the LOQ and 10× the LOQ ranged from 100.2% to 108.7%. The matrix calibration curve showed linearity, with R2 values > 0.998. Diazinon residue in soil dissipated over time after the initial treatment, generating first-order kinetics (R2 = 0.9534) and having a half-life of about 22 days. The uptake ratio (UTR) of diazinon from the soil to the plant ranged from 0.002 to 0.026 over the harvest period. Considering the UTRs, diazinon residue in the edible leaf could exceed the PLS level (0.01 mg/kg) if lettuce is rotated in soil containing >0.357 mg/kg of diazinon. Based on our findings, to comply with the PLS, a 3-month plant-back interval is required following diazinon treatment and/or setting the maximum residue limit of diazinon for lettuce.

show abstract

Section: Discussionmentioning

confidence: 99%

Uptake of Soil-Residual Diazinon by Rotational Lettuce under Greenhouse Conditions

Yoon

Lim

Lee

et al. 2022

Foods

View full text Add to dashboard Cite

show abstract

“…For instance, the provisions of the Codex sampling standard [ 70 ] for the minimum number of primary samples and total mass of a composite laboratory sample should be satisfied where the compliance with MRLs is assessed in goods offered for sale. It is not sufficient to collect [ 76 ], for instance, 4 pieces of head cabbages or Chinese cabbages (instead of the minimum five specified in the Codex GL) even though their total mass may be well over 10 kg and 4–5 kg, respectively, which are much larger than the specified minimum of 2 kg. A larger number of primary samples may be collected than the minimum, provided that their representative part can be effectively comminuted with the available laboratory equipment.…”

Section: Methodsmentioning

confidence: 99%

Quality Control of Pesticide Residue Measurements and Evaluation of Their Results

et al. 2023

View full text Add to dashboard Cite

Pesticide residues are monitored in many countries around the world. The main aims of the programs are to provide data for dietary exposure assessment of consumers to pesticide residues and for verifying the compliance of the residue concentrations in food with the national or international maximum residue limits. Accurate residue data are required to reach valid conclusions in both cases. The validity of the analytical results can be achieved by the implementation of suitable quality control protocols during sampling and determination of pesticide residues. To enable the evaluation of the reliability of the results, it is not sufficient to test and report the recovery, linearity of calibration, the limit of detection/quantification, and MS detection conditions. The analysts should also pay attention to and possibly report the selection of the portion of sample material extracted and the residue components according to the purpose of the work, quality of calibration, accuracy of standard solutions, and reproducibility of the entire laboratory phase of the determination of pesticide residues. The sources of errors potentially affecting the measured residue values and the methods for controlling them are considered in this article.

show abstract

“…Generally, to elucidate the possibility of dietary intakerelated chronic or acute harm to consumer's health, ADI% values are employed (Feng et al 2022;Wang et al 2022). The ADI% values were assessed based on the results of the residue trial via the following formula:…”

Section: Dietary Intake Risk Assessmentmentioning

confidence: 99%

Environmental fate and safety analysis of methoxyfenozide application to control litchi and longan pests

Liu,

Wang,

Wang

2024

Environ Sci Pollut Res

View full text Add to dashboard Cite

Litchi and longan pests significantly affect crop yield and quality. Chemical prevention and control are very effective for production; therefore, it is crucial to study fate assessment and appropriate field efficacy before pesticide application on crops to appropriately assess the health and ecological risks linked with these agents. This study conducted Good Agricultural Practice (GAP) field trials and laboratory experiments to elucidate the dissipation, terminal residues, and efficacy of methoxyfenozide on litchi and longan in six locations throughout China. To detect methoxyfenozide residues on litchi and longan, a QuEChERS/UPLC-MS/MS-based method was designed. The initial methoxyfenozide levels in litchi and longan ranged from 2.21–2.86 to 0.83–0.95 mg kg−1 and indicated half-lives of 5.1–5.3 and 5.3–5.7 days, respectively. After 7 days of foliage treatment, the concentrations of terminal methoxyfenozide residue were 0.78–2.61 and 0.02–1.01 mg kg−1, which were less than the established maximum residue limit for methoxyfenozide in litchi and longan. The chronic (acceptable daily intake = 0.0055–0.0331%) dietary intake risk analysis for methoxyfenozide in longan and litchi indicated acceptable concentrations of terminal residue for the general population. Methoxyfenozide in litchi and longan was readily degraded in first-order kinetics models, the degradation rate on longan was higher than that on litchi, and their dietary risks were negligible to consumers. Two hundred forty grams per liter of methoxyfenozide suspension concentrate (SC) represents a highly efficacious insecticidal dose to control litchi and longan pests and indicates a significant application potential as it is rapidly degraded and linked with reduced post-treatment residue levels.

show abstract

Residue Behavior of Methoxyfenozide and Pymetrozine in Chinese Cabbage and Their Health Risk Assessment

Cited by 10 publications

References 30 publications

Uptake of Soil-Residual Diazinon by Rotational Lettuce under Greenhouse Conditions

Uptake of Soil-Residual Diazinon by Rotational Lettuce under Greenhouse Conditions

Quality Control of Pesticide Residue Measurements and Evaluation of Their Results

Environmental fate and safety analysis of methoxyfenozide application to control litchi and longan pests

Contact Info

Product

Resources

About