Validation, dissipation kinetics and monitoring of flonicamid and dinotefuran residues in paddy grain, straw, its processed produces and bran oil using LC-MS/MS.

Autor: Kumar Karedla A; Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore 641003, Tamil Nadu, India., Surya Raj R; Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore 641003, Tamil Nadu, India., Krishnamoorthy SV; Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore 641003, Tamil Nadu, India., Suganthi A; Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore 641003, Tamil Nadu, India. Electronic address: suganthi.a@tnau.ac.in., Bhuvaneswari K; Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore 641003, Tamil Nadu, India., Karthikeyan S; Centre for Post Harvest Technology, Tamil Nadu Agricultural University, Coimbatore 641003, Tamil Nadu, India., Geetha P; Centre for Post Harvest Technology, Tamil Nadu Agricultural University, Coimbatore 641003, Tamil Nadu, India., Senthilkumar M; Directorate of Extension Education, Tamil Nadu Agricultural University, Coimbatore 641003, Tamil Nadu, India., Jeyarajan Nelson S; Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore 641003, Tamil Nadu, India.
Jazyk: angličtina
Zdroj: Food chemistry [Food Chem] 2024 Mar 01; Vol. 435, pp. 137589. Date of Electronic Publication: 2023 Sep 29.
DOI: 10.1016/j.foodchem.2023.137589
Abstrakt: Flonicamid and dinotefuran are highly effective insecticides in paddy but residue persistence in crop and transmission into food and feed is unknown. This study aimed to examine initial deposits and dissipation kinetics of flonicamid and dinotefuran in paddy matrices and processed products including bran oil. The method was validated following acetonitrile extraction, dispersive solid phase clean-up and finally determination using liquid chromatography-mass spectrometry/mass spectrometry. Recoveries ranged from 76.6 to 109.7 percent for the paddy matrices tested. In a field experiment, flonicamid and dinotefuran were applied to paddy crops to study dissipation patterns. The half-lives of flonicamid and dinotefuran residues in paddy ranged from 2.0 to 3.0 days. However, at harvest time paddy grain and straw samples were found free from residues. Monitoring of residues in farm gate and market samples revealed that paddy products were not contaminated with flonicamid or dinotefuran residues.
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2023 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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