Optical Technologies for Determination of Pesticide Residue

Peng, Yankun; Li, Yongyu; Chen, Jingjing

doi:10.5772/37575

Cited by 10 publications

(4 citation statements)

References 24 publications

(4 reference statements)

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“…This technique has non-contaminant and lossless nature, the low operating cost compared with the conventional techniques, and the fast response times. It also requires little or no sample preparation and can be used in processing lines [23].…”

Section: Introductionmentioning

confidence: 99%

Developing a Vis/NIR spectroscopic system for fast and non-destructive pesticide residue monitoring in agricultural product

Jamshidi

Mohajerani

Jamshidi³

2016

Measurement

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In this research, an optical system based on fibre optic Vis/NIR spectroscopy combined with chemometrics methods and software as a graphical user interface (GUI) was developed and presented for fast and non-destructive detection and determination of pesticide residues in agricultural products (a case study on diazinon in intact cucumbers). Vis/NIR spectra of cucumber samples without and with different concentrations of diazinon residue were analyzed at the range of 450-1000 nm. Partial least squares (PLS) regression models were developed based on chemical reference measurements and the spectral information of the samples after performing different pre-processing methods. Moreover, partial least squares-discriminant analysis (PLS-DA) models were developed based on different spectral pre-processing techniques to classify cucumbers with contents of diazinon below and above the maximum residue limits (MRL) as safe and unsafe samples, respectively. Finally, user-friendly software as a GUI was created based on the best PLS and PLS-DA models developed for prediction of diazinon contents in the samples and for classification of intact cucumbers by the absence/presence of diazinon residues, respectively. Evaluation of the system and software designed based on the best developed PLS and PLS-DA models indicated good performance for measuring and detection of

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Section: Introductionmentioning

confidence: 99%

Developing a Vis/NIR spectroscopic system for fast and non-destructive pesticide residue monitoring in agricultural product

Jamshidi

Mohajerani

Jamshidi³

2016

Measurement

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“…The usage of agrochemicals in the agricultural ecosystem may contribute to increased toxicity for humans, animals, and other living species [2] . Excessive application of agrochemicals, late harvesting, and a lack of time for breakdown of agrochemicals before distribution might result in residues exceeding legal levels, putting consumer safety at risk [3–4] . As a result, establishing regulations for the proper and safe use of agrochemicals is critical.…”

Section: Introductionmentioning

confidence: 99%

“…[2] Excessive application of agrochemicals, late harvesting, and a lack of time for breakdown of agrochemicals before distribution might result in residues exceeding legal levels, putting consumer safety at risk. [3][4] As a result, establishing regulations for the proper and safe use of agrochemicals is critical. In order to maintain the quality and safety of agrochemicals in agricultural activities, without exceeding the toxicological reference value, there is also a strong requirement to verify and monitor the impurities levels in the final product.…”

Section: Introductionmentioning

confidence: 99%

Identification and Characterization of the Isomeric Impurity of the Fungicide “Cyazofamid”

Kannoujia

Nagineni

Rodda

et al. 2023

Chemistry An Asian Journal

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Identification and characterization of biproducts/ impurities present in agrochemicals are critical in view of their efficacy and safety towards public health. We herein present our study on identification and characterization of an impurity, 5-chloro-2-cyano-N,N-dimethyl-4-p-tolylimidazole-1sulfonamide (2) present in the fungicide, "cyazofamid". Intermittent HPLC analysis of the reaction of substituted imidazole (1) with N,N-dimethylsulfamoyl chloride suggested that 2 is formed during the reaction. Isolation by preparative HPLC and characterization by NMR, LC/HRMS, MS/MS and single crystal XRD analysis confirmed 2 as an isomer of cyazofamid, wherein the N,N-dimethyl sulfonamide group was positioned on the other nitrogen of imidazole in close proximity to chloride group. Computational studies further supported the formation of 2 and ruled out the other possible isomeric structures.

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“…6,8–10 Previous studies have demonstrated the potential of NIR spectroscopy with intact fresh fruits and vegetables for the nondestructive determination of quality parameters such as soluble solids, dry matter, titratable acidity and pulp firmness in mango 8 and dry matter, pH and total soluble solids in banana. 11 Peng and Chen 12 advocated using NIR spectroscopy because of its non-contaminant and lossless nature, the low operating cost compared with the conventional techniques and the fast response times. It also requires little or no sample preparation and can be used in processing lines.…”

Section: Introductionmentioning

confidence: 99%

Rapid and nondestructive analysis of deep-fried taro chip qualities using near infrared spectroscopy

Areekij

Ritthiruangdej

Kasemsumran

et al. 2017

Journal of Near Infrared Spectroscopy

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The objective of this study was to use near infrared spectroscopy to determine the moisture and fat content, color properties and maximum force of break of deep-fried taro chips as a rapid and non-destructive technique. Near infrared spectra were recorded on intact taro chips in the wavelength range of 1100-2500 nm collected using a near infrared spectrometer, followed by quality attribute measurements. The near infrared calibration models were developed individually using partial least square regression. The partial least square calibration models were found to have coefficients of determination (R 2) between 0.85 and 0.97 and for independent samples the ratio of prediction to deviation ranged from 2.0 to 4.9. The results indicated that near infrared spectroscopy offers a fast, simple, accurate and nondestructive method to determine the quality of intact, deep-fried taro chips. Therefore, it can be used in-line or at-line for the quality control of the deep-fried process and for better monitoring of changes in the chemical and physical properties of fried products during processing.

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Optical Technologies for Determination of Pesticide Residue

Cited by 10 publications

References 24 publications

Developing a Vis/NIR spectroscopic system for fast and non-destructive pesticide residue monitoring in agricultural product

Developing a Vis/NIR spectroscopic system for fast and non-destructive pesticide residue monitoring in agricultural product

Identification and Characterization of the Isomeric Impurity of the Fungicide “Cyazofamid”

Rapid and nondestructive analysis of deep-fried taro chip qualities using near infrared spectroscopy

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