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Naik R H, Ratnamma, V S, M S P, N SR, M S, K P, Hosamani A, M B, A P, M P. Determination of imidacloprid in brinjal and okra fruits, decontamination and its dietary risk assessment. Heliyon 2023; 9:e16537. [PMID: 37274639 PMCID: PMC10238711 DOI: 10.1016/j.heliyon.2023.e16537] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 04/25/2023] [Accepted: 05/18/2023] [Indexed: 11/01/2023] Open
Abstract
Brinjal and okra are being sprayed withdifferent formulations of imidacloprid which leads to significant deposition of residues on fruits. Here in this study, we validated a method that could detect the traces of imidacloprid residues in a short run time using LC-MS/MS. LOD of 0.001 and LOQ of 0.003 μg/g for brinjal and in compliance with the MRL (0.2 mg/kg). The recovery at different spiking levels recorded 89.67 to 115.55 with an RSDr range of 3.02 and 5.22%. For okra, 0.0025 and 0.008 μg/g were observed as LOD and LOQ, respectively. Recovery was obtained between 88.69 and 93.74%. Precision in terms of repeatability (RSDr) and reproducibility (RSDwR) was found satisfactory in both matrices. Two applications of imidacloprid 17.8% SL in both vegetables showed faster dissipation initially and persisted up to 15-25 days. Decontamination with 2% salt solution followed by boiling for 15min. removed 96.43 and 73.66% of imidacloprid residues from brinjal and okra, respectively. Risk assessment was found to be less than one (HI < 1) for brinjal and okra matrix and can be safely consumed.
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Affiliation(s)
- Harischandra Naik R
- College of Horticulture, University of Horticultural Sciences, Bagalkot, Bengaluru, 560 065, Karnataka, India
| | - Ratnamma
- Pesticide Residue and Food Quality Analysis Laboratory, University of Agricultural Sciences, Raichur, 584 104, Karnataka, India
| | - Sangamesh V
- Pesticide Residue and Food Quality Analysis Laboratory, University of Agricultural Sciences, Raichur, 584 104, Karnataka, India
| | - Pallavi M S
- Pesticide Residue and Food Quality Analysis Laboratory, University of Agricultural Sciences, Raichur, 584 104, Karnataka, India
| | - Saroja Rao N
- Pesticide Residue and Food Quality Analysis Laboratory, University of Agricultural Sciences, Raichur, 584 104, Karnataka, India
| | - Saraswati M
- Pesticide Residue and Food Quality Analysis Laboratory, University of Agricultural Sciences, Raichur, 584 104, Karnataka, India
| | - Pavankumar K
- Pesticide Residue and Food Quality Analysis Laboratory, University of Agricultural Sciences, Raichur, 584 104, Karnataka, India
| | - Arunkumar Hosamani
- Pesticide Residue and Food Quality Analysis Laboratory, University of Agricultural Sciences, Raichur, 584 104, Karnataka, India
| | - Bheemanna M
- Pesticide Residue and Food Quality Analysis Laboratory, University of Agricultural Sciences, Raichur, 584 104, Karnataka, India
| | - Prabhuraj A
- Pesticide Residue and Food Quality Analysis Laboratory, University of Agricultural Sciences, Raichur, 584 104, Karnataka, India
| | - Paramasivam M
- Tamil Nadu Agricultural University, Coimbatore, 641 003, Tamil Nadu, India
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Pasar R, Ms P, R HN, M D, P N, M B, R BP, M P. Simultaneous determination of dimethoate and its metabolite omethoate in curry leaf using LC-MS/MS and risk assessment. J Sep Sci 2022; 45:1831-1838. [PMID: 35315569 DOI: 10.1002/jssc.202100696] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 03/02/2022] [Accepted: 03/11/2022] [Indexed: 11/07/2022]
Abstract
This study presents the method development, validation, and simultaneous determination of dimethoate and its metabolite omethoate in curry leaf. Samples were extracted following modified quick, easy, cheap, effective, rugged, and safe extraction protocol and analyzed using liquid chromatography-tandem mass spectrometry. The limit of quantification in the matrix was 0.005 μg g-1 for dimethoate and omethoate. Extraction using acetonitrile recorded the average recoveries in the range of 82.25 to 112.97% for dimethoate and 85.57 to 107.22% for omethoate at 0.005, 0.025 and 0.050 μgg-1 fortification levels and relative standard deviation less than 5%. Similarly, the relative standard deviation values for intraday (Repeatability) and interday (Reproducibility) tests were less than 15%. Dissipation kinetics of dimethoate 30% emulsifiable concentrate at 200 and 400 g a.i h-1 recorded initial deposits of 5.20 and 10.05 μg g-1 and 0.33 and 0.48 μg g-1 for dimethoate and omethoate, respectively, and half-life of 3.07 and 3.34 days. The estimated hazard index value found more than one at a day after dimethoate application. It is not safe for consumer health to use curry leaves in the initial days after application. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Ratnamma Pasar
- Pesticide Residue and Food Quality Analysis Laboratory, Department of Agricultural Entomology, University of Agricultural Sciences, Raichur, Karnataka, 584 104, India
| | - Pallavi Ms
- Pesticide Residue and Food Quality Analysis Laboratory, Department of Agricultural Entomology, University of Agricultural Sciences, Raichur, Karnataka, 584 104, India
| | - Harischandra Naik R
- Pesticide Residue and Food Quality Analysis Laboratory, Department of Agricultural Entomology, University of Agricultural Sciences, Raichur, Karnataka, 584 104, India
| | - Devaraj M
- Pesticide Residue and Food Quality Analysis Laboratory, Department of Agricultural Entomology, University of Agricultural Sciences, Raichur, Karnataka, 584 104, India
| | - Nandini P
- Pesticide Residue and Food Quality Analysis Laboratory, Department of Agricultural Entomology, University of Agricultural Sciences, Raichur, Karnataka, 584 104, India
| | - Bheemanna M
- Pesticide Residue and Food Quality Analysis Laboratory, Department of Agricultural Entomology, University of Agricultural Sciences, Raichur, Karnataka, 584 104, India
| | - Badariprasad P R
- Pesticide Residue and Food Quality Analysis Laboratory, Department of Agricultural Entomology, University of Agricultural Sciences, Raichur, Karnataka, 584 104, India
| | - Paramasivam M
- Pesticide Toxicology Laboratory, Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, 641 003, India
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R HN, K P, S PM, M B, R UN. Simultaneous determination of 34 chemical pesticides in red chili using gas chromatography‐tandem mass spectrometer. Sep Sci plus 2021. [DOI: 10.1002/sscp.202000068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Harischandra Naik R
- Pesticide Residue and Food Quality Analysis Laboratory University of Agricultural Sciences Raichur Karnataka India
| | - Pavankumar K
- Pesticide Residue and Food Quality Analysis Laboratory University of Agricultural Sciences Raichur Karnataka India
| | - Pallavi M S
- Pesticide Residue and Food Quality Analysis Laboratory University of Agricultural Sciences Raichur Karnataka India
| | - Bheemanna M
- Pesticide Residue and Food Quality Analysis Laboratory University of Agricultural Sciences Raichur Karnataka India
| | - Udaykumar Nidoni R
- Pesticide Residue and Food Quality Analysis Laboratory University of Agricultural Sciences Raichur Karnataka India
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