Method validation and evaluation of household processing on reduction of pesticide residues in tomato

Hassan, H. M.; Elsayed, Elham; El-Raouf, Abd El-Rahman Abd; Salman, Salma

doi:10.1007/s00003-018-1197-2

Cited by 18 publications

(32 citation statements)

References 24 publications

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“…508: Magnitude of the Pesticide Residues in Processed Commodities( OECD 2008) and the agricultural industry standard of China (NY/T 3095-2017): Guideline for the testing of pesticide residues in processed agricultural commodities, the processing factor is equal to residues in processed agricultural commodities (mg/kg) divided by residues in raw agricultural commodities (mg/kg). When the processing factor is greater than 1, it indicates a concentration increase in processed agricultural commodities during processing, whereas a decrease in the residue concentration is expressed by a factor of less than 1 (Hassan et al 2019, Jing et al 2017).…”

Section: Discussionmentioning

confidence: 99%

Dissipation Dynamic And Processing Factor Of Myclobutanil In Tomato

Cao

et al. 2022

Preprint

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The effect of different processing factors on myclobutanil levels during canned tomato paste production was investigated. A validated residue analysis method was developed to identify myclobutanil by using QuEChERS extractionand UPLC-MS/MS analysis. To eliminate the matrix effect, a matrix-matched standard calibration curve was applied for accurate quantification. Myclobutanil miscible oil was sprayed under field conditions, and then tomato fruits were collected. The disspation of myclobutanil in tomato fruits followed a first-order dynamic equation with a half-life of 2.88 days. The result was similar to that in previous reports. The half-lives of myclobutanil in plants were short. The results of processing experiment indicated that the processing factors were all less than 1, showing that the processing procedure significantly decreased the residual level of myclobutanil canned tomato paste in comparison with the raw agricultural commodity. Washing, peeling, and homogenization played a critical role in reducing pesticide residues.

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Section: Discussionmentioning

confidence: 99%

Dissipation Dynamic And Processing Factor Of Myclobutanil In Tomato

Cao

et al. 2022

Preprint

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“…The samples were immersed for one hour until the pesticide residue levels did not increase. The contaminated oranges were air dried for 24 h at room temperature before processing (Hassan et al, 2019).…”

Section: Preparation Of Contaminated Samplesmentioning

confidence: 99%

“…In recent years, it has been essential to use matrix-matched calibration in routine procedure for the analysis of pesticides in food by chromatographic methods to avoid an error caused by the presence of matrix eff ect (Kwon et al 2012). In previous study, in which the validation of the GC-MS method was the main focus, QuEChERS was employed as a sample preparation technique for the determination of chlorpyrifos and metalaxyl residues in to-matoes matrices (Hassan et al, 2019). Lozowicka et al (2016) determined the processing factor (PF) for 16 pesticides processing techniques in strawberries.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the effects of household processing on the reduction rate of chlorpyrifos, metalaxyl and diazinon residues in orange fruit

Elsayed

Hassan

ElRaouf

et al. 2021

Hellenic Plant Protection Journal

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Summary The effect of the household processing on the reduction rate of chlorpyrifos, metalaxyl and diazinon residues in contaminated oranges has been investigated and the processing factors were determined. The evaluation included validation parameters, matrix effect (ME %), reduction behavior and processing factors (PFs). Validation parameters were successfully applied; the three pesticides showed satisfactory recovery (70–120%) and precision (relative standard deviation - RSD<20%); they also exhibited no matrix effect. The most effective process in the pesticide residues reduction was juicing, followed by pulping while the washing process was less efficient in removing all pesticide residues; sonication showed a high reduction rate with both chlorpyrifos and diazinon. The processing factors (PFs) were generally less than one which indicates that all processes can reduce pesticide residues in oranges. The results could guide the safe and reasonable use of chlorpyrifos, diazinon, and metalaxyl. These processes contribute substantially to reduce consumer exposure to pesticide residues in oranges.

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“…These effects and interferences are called matrix effects. 19 Therefore, the matrix effect of using colloidal gold test paper to detect Met in tobacco will be a main obstacle in this study.…”

Section: Introductionmentioning

confidence: 96%

Rapid and Sensitive Immunochromatographic Method-Based Monoclonal Antibody for the Quantitative Detection of Metalaxyl in Tobacco

Liu

Hao

et al. 2020

ACS Omega

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In this study, we prepared a monoclonal antibody (mAb) against metalaxyl (Met) with a half-maximum inhibitory concentration (IC 50 ) of 0.54 ng/mL based on a new hapten, and a gold nanoparticle-based immunochromatographic assay (GICA) was developed for the rapid detection of Met residues in tobacco. Under optimal conditions, even with the naked eye, one can see the semiquantitative analysis results. The naked eye detection limit of Met in tobacco is 25 μg/kg, and the detection threshold is 100 μg/kg. In addition, the cross-reactivity test shows that the mAb has good specificity for Met, and the GICA results have a good correlation with the indirect competitive enzyme-linked immunosorbent assay and liquid chromatography with tandem mass spectrometry test results, which show that the method is feasible and reliable and are more convenient and quicker than the methods using instrumentation for detection. Therefore, GICA may provide a useful tool for the rapid screening and detection of Met residues in tobacco.

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Method validation and evaluation of household processing on reduction of pesticide residues in tomato

Cited by 18 publications

References 24 publications

Dissipation Dynamic And Processing Factor Of Myclobutanil In Tomato

Dissipation Dynamic And Processing Factor Of Myclobutanil In Tomato

Investigation of the effects of household processing on the reduction rate of chlorpyrifos, metalaxyl and diazinon residues in orange fruit

Rapid and Sensitive Immunochromatographic Method-Based Monoclonal Antibody for the Quantitative Detection of Metalaxyl in Tobacco

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