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Hazra DK, Mondal P, Purkait A, Mandal S, Bhattacharyya S, Karmakar R, Roy S, Banerjee T, Banerjee H. Determination of quizalofop-p-ethyl in onion: residual dissipation pattern, weed control efficiency, and food safety assessment under field conditions. Environ Monit Assess 2023; 195:1067. [PMID: 37598129 DOI: 10.1007/s10661-023-11691-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Accepted: 08/07/2023] [Indexed: 08/21/2023]
Abstract
Monitoring pesticide residue levels becomes crucial to maintain quality and guarantee food safety as the consumption of onion green leaves and immature and mature bulbs (either raw or processed) rises. A field experiment was conducted for two consecutive seasons with quizalofop-p-ethyl (5% EC) at 50 and 100 g a.i. ha-1 to evaluate weed control efficiency and to determine terminal residues. Post-emergence application of fop herbicide at 100 g a.i. ha-1 kept the weed density and dry weight reasonably at a lower level and enhanced the productivity of onion with higher economic returns. A rapid, sensitive, and analytical method was developed using high-performance liquid chromatography (HPLC) with excellent linearity (r2 > 0.99). The limit of quantification for quizalofop-p-ethyl was established at 0.04 mg kg-1 with signal to noise (S/N) ratio ≥ 10. The method was successfully applied and initial quantified residues were in the range of 2.5-4.4 mg kg-1 irrespective of seasons and doses. Finally, the presence of targeted herbicide residues in harvested samples was confirmed by liquid chromatography tandem mass spectrometry (LC-MS/MS) under optimized operating conditions. Dietary risk assessment assured harvested onions were safe for consumption at the recommended dose. It also can be concluded that quizalofop ethyl did not adversely influence soil micro-organisms at standard rates of application.
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Affiliation(s)
- Dipak Kumar Hazra
- Department of Agricultural Chemicals, Bidhan Chandra Krishi Viswavidyalaya, Kalyani, Nadia, West Bengal, 741235, India
- All India Network Project on Pesticide Residues, Department of Agricultural Chemicals, Bidhan Chandra Krishi Viswavidyalaya, Kalyani, Nadia, West Bengal, 741235, India
| | - Prithusayak Mondal
- Regional Research Station (Terai Zone), Uttar Banga Krishi Viswavidyalaya, Pundibari, Cooch Behar, West Bengal, 736165, India.
| | - Aloke Purkait
- Department of Soil Science and Agricultural Chemistry, Palli-Siksha Bhavana (Institute of Agriculture), Visva - Bharati, Sriniketan, Bolpur, Birbhum, West Bengal, 731236, India
| | - Swagata Mandal
- All India Network Project on Pesticide Residues, Department of Agricultural Chemicals, Bidhan Chandra Krishi Viswavidyalaya, Kalyani, Nadia, West Bengal, 741235, India
| | - Sudip Bhattacharyya
- All India Network Project on Pesticide Residues, Department of Agricultural Chemicals, Bidhan Chandra Krishi Viswavidyalaya, Kalyani, Nadia, West Bengal, 741235, India
| | - Rajib Karmakar
- Department of Agricultural Chemicals, Bidhan Chandra Krishi Viswavidyalaya, Kalyani, Nadia, West Bengal, 741235, India
- All India Network Project on Pesticide Residues, Department of Agricultural Chemicals, Bidhan Chandra Krishi Viswavidyalaya, Kalyani, Nadia, West Bengal, 741235, India
| | - Sankhajit Roy
- Department of Agricultural Chemicals, Bidhan Chandra Krishi Viswavidyalaya, Kalyani, Nadia, West Bengal, 741235, India
| | - Tirthankar Banerjee
- Division of Agricultural Chemicals, ICAR-Indian Agricultural Research Institute, LBS Building, Pusa Campus, New Delhi, 110012, India
| | - Hemanta Banerjee
- Department of Agricultural Chemicals, Bidhan Chandra Krishi Viswavidyalaya, Kalyani, Nadia, West Bengal, 741235, India
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Kumar V, Swain HS, Roy S, Das BK, Upadhyay A, Ramteke MH, Kumar V, Kole RK, Banerjee H. Integrated biomarker approach strongly explaining in vivo sub-lethal acute toxicity of butachlor on Labeo rohita. Comp Biochem Physiol C Toxicol Pharmacol 2022; 261:109427. [PMID: 35944825 DOI: 10.1016/j.cbpc.2022.109427] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 07/20/2022] [Accepted: 08/03/2022] [Indexed: 11/18/2022]
Abstract
Butachlor herbicide belongs to the family of chloroacetanilide group, widely used for control of grass and broadleaf weeds in paddy fields however, its repeated application may result in aquatic pollution. Butachlor residue has been detected in aquatic environments, which may produce toxic effects on non-target organisms including fish. Keeping this in mind, the present study was designed to estimate the LC50 of butachlor (Shaktiman®), and to evaluate the sub-lethal toxicity at two concentrations (12.42 μg L-1 and 62.10 μg L-1) in Labeo rohita for a period of 24, 48, and 72 h. Fish exposed to butachlor reduced the counts of red blood cells (RBC), haemoglobin (HGB), hematocrit (HCT), and white blood cells (WBC). A significant (p < 0.05) increase in the antioxidant enzyme (superoxide dismutase-SOD, glutathione-s-transferase-GST), and hepatic enzyme (glutamate-oxaloacetate transaminase-GOT, glutamate-pyruvate transaminase-GPT) were noticed in butachlor exposed fish. Heat shock protein 70 (HSP70) and HSP90 in gill; cortisol, protein, albumin, globulin, and triglyceride in serum were increased upon exposure of butachlor. On the contrary, complement 3 (C3) and immunoglobulin (IgM) in serum was found to be decreased compared to control fish. The findings thus suggest that the fish upon exposure to butachlor disrupts the biomarkers which ultimately leads to growth retardation in fish.
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Affiliation(s)
- Vikas Kumar
- Department of Agricultural Chemicals, Faculty of Agriculture, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia 741252, West Bengal, India; ICAR-Central Inland Fisheries Research Institute, Barrackpore, Kolkata 700120, West Bengal, India
| | - Himanshu Sekhar Swain
- ICAR-Central Inland Fisheries Research Institute, Barrackpore, Kolkata 700120, West Bengal, India
| | - Sankhajit Roy
- Department of Agricultural Chemicals, Faculty of Agriculture, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia 741252, West Bengal, India
| | - Basanta Kumar Das
- ICAR-Central Inland Fisheries Research Institute, Barrackpore, Kolkata 700120, West Bengal, India.
| | - Aurobinda Upadhyay
- ICAR-Central Inland Fisheries Research Institute, Barrackpore, Kolkata 700120, West Bengal, India
| | - Mitesh Hiradas Ramteke
- ICAR-Central Inland Fisheries Research Institute, Barrackpore, Kolkata 700120, West Bengal, India
| | - Vikash Kumar
- ICAR-Central Inland Fisheries Research Institute, Barrackpore, Kolkata 700120, West Bengal, India
| | - Ramen Kumar Kole
- Department of Agricultural Chemicals, Faculty of Agriculture, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia 741252, West Bengal, India
| | - Hemanta Banerjee
- Department of Agricultural Chemicals, Faculty of Agriculture, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia 741252, West Bengal, India
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Nathan P, Grob J, Dummer R, Ascierto P, Ribas A, Robert C, Schadendorf D, Flaherty K, Tawbi H, Hauschild A, Mandala M, Shah R, Banerjee H, Sarkar R, Lau M, Long G. 819P Efficacy of dabrafenib (D) trametinib (T) plus spartalizumab (S) by baseline site of metastases in patients (pts) with previously untreated BRAF V600-mutant unresectable or metastatic melanoma: Post hoc analysis of phase III COMBI-i trial. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Del Vecchio M, Atkinson V, Ryll B, Menzies A, Aubin F, Chiarion Sileni V, Ferraresi V, Lesimple T, Rinaldi G, Saiag P, Robert C, Dutriaux C, Gogas H, Demidov L, Gupta A, Banerjee H, Sudhir S, Miranda F, Lau M, Grob J. 806P Updated toxicity profile and relapse-free survival outcomes using an adapted pyrexia management algorithm in patients with resected stage III BRAF V600E/K-mutant melanoma treated with adjuvant dabrafenib plus trametinib in COMBI-APlus. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Mandal S, Poi R, Hazra DK, Bhattacharyya S, Banerjee H, Karmakar R. Assessment of variable agroclimatic impact on dissipation kinetics of ready-mix fungicide formulation in green chili for harmonization of food safety. J Food Compost Anal 2022. [DOI: 10.1016/j.jfca.2022.104541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Robert C, Davies M, Dummer R, Grob J, Hauschild A, Kirkwood J, Long G, Mandalà M, Nathan P, Banerjee H, Sahoo B, Lau M, Biette K, Boran A, Schadendorf D. 1075P Regression tree analysis to identify factors associated with relapse-free survival (RFS) in patients with resected stage III BRAF V600E/K–mutant melanoma. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.1460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Kirkwood J, Dummer R, Hauschild A, Santinami M, Atkinson V, Sileni VC, Larkin J, Nyakas M, Haydon A, Dutriaux C, Schachter J, Robert C, Mortier L, Banerjee H, Haas T, Tan M, Lau M, Schadendorf D, Long G, Mandala' M. 1100P Restricted mean survival time (RMST) and cure-rate modeling in estimating survival benefit with adjuvant dabrafenib (D) plus trametinib (T) treatment in melanoma. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.1223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Sharma N, Banerjee H, Pal S, Sharma K. Persistence of thiacloprid and deltamethrin residues in tea grown at different locations of North-East India. Food Chem 2018; 253:88-92. [DOI: 10.1016/j.foodchem.2018.01.132] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Revised: 01/18/2018] [Accepted: 01/21/2018] [Indexed: 10/17/2022]
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Sharma K, Bhushan VS, Rao CS, Reddy KN, Banerjee H, Mandal S, Singh B, Battu R, Jyot G, Sahoo S, Mohapatra S, Lekha S, Manikrao G, Radhika B, Tripathy V, Yadav R, Shukla P, Patel AN, Singh G, Devi S, Pandey P, Gautam R, Kalra S, Gupta R, Singh G, Gopal M, Walia S. Persistence, dissipation and consumer risk assessment of a combination formulation of flubendiamide and deltamethrin on cucumber. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2018; 35:498-511. [DOI: 10.1080/19440049.2017.1416678] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- K.K. Sharma
- All India Network Project on Pesticide Residues, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - V. Shashi Bhushan
- bAINP on Pesticide Residues, Professor Jayashankar Telangana State Agricultural University, Hyderabad, Telangana, India
| | - Cherukuri Sreenivasa Rao
- bAINP on Pesticide Residues, Professor Jayashankar Telangana State Agricultural University, Hyderabad, Telangana, India
| | - K. Narsimha Reddy
- bAINP on Pesticide Residues, Professor Jayashankar Telangana State Agricultural University, Hyderabad, Telangana, India
| | - Hemanta Banerjee
- Department of Agricultural Chemicals, Bidhan Chandra Krishi Vishwavidyalaya, Kalyani, India
| | - Swagata Mandal
- Department of Agricultural Chemicals, Bidhan Chandra Krishi Vishwavidyalaya, Kalyani, India
| | - Balwinder Singh
- Department of Entomology, Punjab Agricultural University, Ludhiana, India
| | - R.S. Battu
- Department of Entomology, Punjab Agricultural University, Ludhiana, India
| | - Gagan Jyot
- Department of Entomology, Punjab Agricultural University, Ludhiana, India
| | - S.K. Sahoo
- Department of Entomology, Punjab Agricultural University, Ludhiana, India
| | - Soudamini Mohapatra
- Department of Soil Science and Agricultural Chemistry, ICAR-Indian Horticultural Research Institute, Bangaluru, New Delhi, India
| | - S. Lekha
- Department of Soil Science and Agricultural Chemistry, ICAR-Indian Horticultural Research Institute, Bangaluru, New Delhi, India
| | - Gourishankar Manikrao
- Department of Soil Science and Agricultural Chemistry, ICAR-Indian Horticultural Research Institute, Bangaluru, New Delhi, India
| | - B. Radhika
- Department of Soil Science and Agricultural Chemistry, ICAR-Indian Horticultural Research Institute, Bangaluru, New Delhi, India
| | - Vandana Tripathy
- All India Network Project on Pesticide Residues, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Rajbir Yadav
- All India Network Project on Pesticide Residues, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Poonam Shukla
- All India Network Project on Pesticide Residues, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Amar Nath Patel
- All India Network Project on Pesticide Residues, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Gitansh Singh
- All India Network Project on Pesticide Residues, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Suneeta Devi
- All India Network Project on Pesticide Residues, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Priya Pandey
- All India Network Project on Pesticide Residues, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Rahul Gautam
- All India Network Project on Pesticide Residues, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Shobhita Kalra
- All India Network Project on Pesticide Residues, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Ruchi Gupta
- All India Network Project on Pesticide Residues, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Geeta Singh
- All India Network Project on Pesticide Residues, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Madhuban Gopal
- All India Network Project on Pesticide Residues, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Suresh Walia
- All India Network Project on Pesticide Residues, ICAR-Indian Agricultural Research Institute, New Delhi, India
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Banerjee H, Bazemore B, Barfield A, Crummity D, Krauss C, Payne G, Rousch J, Manglik V. A Study to Investigate the Role of GULP/ CED 6 Gene in "Eat Me" Signaling in Cellular Efferocytosis and Immunosurveillance. Immunol Disord Immunother 2016; 1:109. [PMID: 28286882 PMCID: PMC5345489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
In this report, investigations were done to study human GULP/ CED 6 genes role in presenting cancer cells to scavenger cells. CED 6 SiRNA was used to knock out the gene in Astrocytoma (HTB-12) cell lines to study its effects on expression of various "eat me" signals on these cells including Phosphatidyl serine (PtdSer) expression, nitric oxide (NO) signaling and Leukotrine B4 (LTB4) expression and Caspase 3 activation. Investigations were done by fluorescence microscopy techniques, ELISA assay and colorimetric assays using a standard microplate reader and spectrophotometer. Initial results showed all the above mentioned "eat me" signals were significantly decreased in CED 6 knock out cell lines. Therefore CED 6 gene must have a role in cancer cell clearance, pathway involved in the cross talk between CED 6 and other genes in this process is a matter of farther investigation.
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Affiliation(s)
- H Banerjee
- Corresponding author: Banerjee H, Department of Natural, Pharmacy and Health Sciences, Elizabeth City State University Campus, University of North Carolina, Elizabeth City, USA
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Sharma KK, Shukla VR, Patel AR, Vaghela KM, Patel HK, Shah PG, Banerjee H, Banerjee T, Hudait RK, Sharma D, Sahoo SK, Singh B, Tripathy V. Multilocation field trials for risk assessment of a combination fungicide Fluopicolide + Propamocarb in tomato. Environ Monit Assess 2016; 188:604. [PMID: 27709463 DOI: 10.1007/s10661-016-5610-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Accepted: 09/21/2016] [Indexed: 06/06/2023]
Abstract
Dissipation kinetics of two systemic fungicides, namely fluopicolide and propamocarb used as a combination formulation (Infinito 68.75 SC), were studied on tomato at four different locations by the All India Network Project on Pesticide Residues to recommend their pre-harvest interval (PHI) and to propose the maximum residue limits (MRL) for the two fungicides based on chronic hazard exposure assessment. The combination fungicide was sprayed thrice at the recommended dosage of 93.75 g a.i./ha fluopicolide and 937.50 g a.i./ha propamocarb as well as at double the recommended dosage of 187.50 g a.i./ha fluopicolide and 1875.0 g a.i./ha propamocarb on tomato crops and the residues were monitored periodically by GC-MS. The fungicides dissipated to below the limit of quantification (LOQ) within 10 to 15 days, with a half-life of 2-4 days for fluopicolide and 1-2 days for propamocarb. Taking into consideration the MRLs of codex and calculations made using the method of MRL fixation of the Food Safety and Standard Authority of India (FSSAI) as well as the Organization for Economic Co-operation and Development (OECD) calculator, MRL of 5 mg/kg is proposed for fluopicolide and 15 mg/kg for propamocarb, following critical exposure of the commodity considering PHI of 1 day.
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Affiliation(s)
- K K Sharma
- All India Network Project on Pesticide Residues, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India.
| | - V R Shukla
- Anand Agricultural University, Anand, Gujarat, India
| | - A R Patel
- Anand Agricultural University, Anand, Gujarat, India
| | - K M Vaghela
- Anand Agricultural University, Anand, Gujarat, India
| | - H K Patel
- Anand Agricultural University, Anand, Gujarat, India
| | - Paresh G Shah
- Anand Agricultural University, Anand, Gujarat, India
| | - Hemanta Banerjee
- Bidhan Chandra Krishi Vishwavidyalaya, Kalyani, West Bengal, India
| | | | - Ram K Hudait
- Bidhan Chandra Krishi Vishwavidyalaya, Kalyani, West Bengal, India
| | - Debi Sharma
- ICAR-Indian Horticultural Research Institute, Bangalore, Karnataka, India
| | - S K Sahoo
- Punjab Agricultural University, Ludhiana, Punjab, India
| | | | - Vandana Tripathy
- All India Network Project on Pesticide Residues, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
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Sharma KK, Mukherjee I, Singh B, Mandal K, Sahoo SK, Banerjee H, Banerjee T, Roy S, Shah PG, Patel HK, Patel AR, Beevi SN, George T, Mathew TB, Singh G, Noniwal R, Devi S. Persistence and risk assessment of spiromesifen on tomato in India: a multilocational study. Environ Monit Assess 2014; 186:8453-8461. [PMID: 25218317 DOI: 10.1007/s10661-014-4016-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2013] [Accepted: 08/15/2014] [Indexed: 06/03/2023]
Abstract
Supervised field trials were conducted at four different agro-climatic locations of India to evaluate the dissipation pattern and risk assessment of spiromesifen on tomato. Spiromesifen 240 SC was sprayed on tomato at 150 and 300 g a.i. ha(-1). Samples of tomato fruits were drawn at 0, 1, 3, 5, 7, 10 and 15 days after treatment and soil at 15 days after treatment. Quantification of residues was done on gas chromatograph-mass spectrophotometer in selective ion monitoring mode in the mass range of 271-274 (m/z). The limit of quantification of the method was found to be 0.05 mg kg(-1), while the limit of determination was 0.015 mg kg(-1). Residues were found below the LOQ of 0.05 mg kg(-1) in 10 days at both the doses of application at all the locations. Spiromesifen dissipated with a half-life of 0.93-1.38 days at the recommended rate of application and 1.04-1.34 days at the double the rate of application. Residues of spiromesifen in soil were detectable level (<0.05 mg kg(-1)) after 15 days of treatment. A preharvest interval (PHI) of 1 day has been recommended on tomato on the basis of data generated under All India Network Project on Pesticide Residues. Spiromesifen 240 SC has been registered for its use on tomato by Central Insecticide Board and Registration Committee, Ministry of Agriculture, Government of India. The maximum residue limit (MRL) of spiromesifen on tomato has been fixed by Food Safety Standard Authority of India, Ministry of Health and Family Welfare, Government of India as 0.3 μg/g after its risk assessment.
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Affiliation(s)
- K K Sharma
- All India Network Project on Pesticide Residues, Division of Agricultural Chemicals, Indian Agricultural Research Institute, New Delhi, 110012, India,
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Paramasivam M, Banerjee H. Dissipation of flubendiamide residues in/on cabbage (Brassica oleracea L.). Environ Monit Assess 2013; 185:1577-1581. [PMID: 22527473 DOI: 10.1007/s10661-012-2652-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2011] [Accepted: 04/09/2012] [Indexed: 05/31/2023]
Abstract
Residues of fubendiamide and its metabolite desiodo flubendiamide were estimated in cabbage and soil using high-performance liquid chromatography with UV-vis detector. The initial deposits of flubendiamide residues on cabbage were found to be 0.16 and 0.31 μg g(-1) following two applications of flubendiamide 20 WG at 12.5 (standard dose) and 25 (double dose) g a.i. ha(-1) respectively at 10-days interval. The half-life values (t(1/2)) of flubendiamide on cabbage ranged from 3.4 to 3.6 days. When flubendiamide applied at both the standard and double dose, no detectable residues were found in cabbage and soil at harvest. Thus, a waiting period of 1.63 days was suggested for the safe consumption of flubendiamide-treated cabbage. These data could provide guidance for the proper and safe use of this pesticide on cabbage crops in India.
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Affiliation(s)
- M Paramasivam
- AINP on Pesticide Residue Laboratory, Department of Agricultural Chemicals, Bidhan Chandra Krishi Viswavidyalaya, Kalyani, 741 235 West Bengal, India.
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Banerjee D, Banerjee H. Thiacloprid residues and its safety evaluation in Darjeeling tea. Bull Environ Contam Toxicol 2012; 89:598-601. [PMID: 22797286 DOI: 10.1007/s00128-012-0731-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2012] [Accepted: 07/04/2012] [Indexed: 06/01/2023]
Abstract
In order to examine the persistence behavior, safety evaluation and utilization of residue data for fixation of thiacloprid MRL, a supervised field trial in tea was conducted at Darjeeling. The HPLC analysis of thiacloprid in green tea leaves indicates that the initial deposits of 2.14 and 3.95 mg kg(-1), which declined gradually and persisted until day 14 to the tune of 0.23 and 0.45 mg kg(-1) respectively. The residues in processed tea samples prepared from green tea leaves of 7 and 14th day were 3.0-3.8 times less. Thiacloprid did not infuse to tea liquor from processed tea. The half-life value in green tea leaves ranged from 4.29 to 4.31 days. Considering the EU MRL value of 10 mg kg(-1) and risk assessment calculation, thiacloprid at 30 g a.i. ha(-1) appears to be safe in plant protection schedules and first round of plucking of green tea leaves on day 7 is recommended.
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Affiliation(s)
- Devottam Banerjee
- All India Network Project on Pesticide Residues, Directorate of Research, Bidhan Chandra Krishi Viswavidyalaya, Kalyani, Nadia, 741235, West Bengal, India
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Kale VD, Walunj AR, Battu RS, Sahoo SK, Singh B, Paramasivam M, Roy S, Banerjee T, Banerjee H, Rao CS, Reddy DJ, Reddy KN, Reddy CN, Tripathy V, Jaya M, Pant S, Gupta M, Singh G, Sharma KK. Assessment of flubendiamide residues in pigeon pea in different agro-climatic zones of India. Environ Monit Assess 2012; 184:4267-4270. [PMID: 21811770 DOI: 10.1007/s10661-011-2261-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2010] [Accepted: 07/15/2011] [Indexed: 05/31/2023]
Abstract
Supervised field trials were conducted at the research farms of four agricultural universities located at different agro-climatic zones of India to find out the harvest time residues of flubendiamide and its des-iodo metabolite on pigeon pea (Cajanus cajan) during the year 2006-2007. Two spray applications of flubendiamide 20 WDG at 50 g (T(1)) and 100 g (T(2)) a.i./ha were given to the crop at 15-days interval. The foliage samples at different time intervals were drawn at only one location, however, the harvest time samples of pigeon pea grain, shell, and straw were drawn at all the four locations. The residues were estimated by HPLC coupled with UV-VIS variable detector. No residues of flubendiamide and its des-iodo metabolite were found at harvest of the crop at or above the LOQ level of 0.05 μg/g. On the basis of the data generated, a pre-harvest interval (PHI) of 28 days has been recommended and the flubendiamide 20 WDG has been registered for use on pigeon pea by Central Insecticide Board and Registration Committee, Ministry of Agriculture, Government of India and the MRL has been fixed by Ministry of Health and Family Welfare, Government of India under Prevention of Food and Adulteration as 0.05 μg/g on pigeon pea grains.
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Affiliation(s)
- V D Kale
- All India Network Project on Pesticide Residues, Division of Agricultural Chemicals, IARI, New Delhi, 110 012, India
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Banerjee T, Banerjee D, Roy S, Banerjee H, Pal S. A comparative study on the persistence of imidacloprid and beta-cyfluthrin in vegetables. Bull Environ Contam Toxicol 2012; 89:193-196. [PMID: 22526997 DOI: 10.1007/s00128-012-0644-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2012] [Accepted: 04/06/2012] [Indexed: 05/31/2023]
Abstract
In an effort to compare the persistence of imidacloprid and beta-cyfluthrin, when applied through a ready mix formulation, Solomon 300 OD @ 200 and 400 mL ha(-1) in the fruits of brinjal, tomato and okra, the present study has been made. The study indicated that the dissipation of these insecticides irrespective of fruits followed concentration dependent first order kinetics. The degradation constant and half live value of beta-cyfluthrin varies between -0.287 and -0.642 day(-1) and 1.07 and 2.41 days while that of imidacloprid between -0.21 and -0.34 day(-1) and 1.98 and 3.30 days respectively suggesting that the persistence of beta-cyfluthrin is lower than that of imidacloprid in fruits of these vegetables. Moreover, the persistence of these insecticides when compared between different fruits, it is highest in brinjal followed by tomato and least in okra, a probable clue of which has been proposed based on the non-enzymatic antioxidant content of the fruits.
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Affiliation(s)
- Tirthankar Banerjee
- All India Network Project on Pesticide Residues, Directorate of Research, Bidhan Chandra Krishi Viswavidyalaya, Kalyani, Nadia, 741235, West Bengal, India
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17
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Pandher S, Sahoo SK, Battu RS, Singh B, Saiyad MS, Patel AR, Shah PG, Reddy CN, Reddy DJ, Reddy KN, Rao CS, Banerjee T, Banerjee D, Hudait R, Banerjee H, Tripathy V, Sharma KK. Persistence and dissipation kinetics of deltamethrin on chili in different agro-climatic zones of India. Bull Environ Contam Toxicol 2012; 88:764-768. [PMID: 22411176 DOI: 10.1007/s00128-012-0588-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2011] [Accepted: 02/28/2012] [Indexed: 05/31/2023]
Abstract
Multi-location supervised field trials were conducted at four different agro climatic locations in India to evaluate the dissipation pattern of deltamethrin on chili. Deltamethrin 10 EC was applied on chili @17.5 and 35 g a.i. ha(-1), samples of green chili were drawn at different time intervals and that of red chili and soil at harvest time and quantified by gas liquid chromatography equipped with electron capture detector. The identity of residues were confirmed by Gas Chromatograph-Mass Spectrophotometer in selective ion monitoring mode in mass range 181, 253 m/z. Limit of quantification of the method was found to be 0.01 mg kg(-1). Half-life of deltamethrin at application rate of 17.5 g a.i. ha(-1) varied from 0.36 to 1.99 days and at double the application rate was found to range from 0.38 to 2.06 days. Residues of deltamethrin were found below its determination limit of 0.01 mg kg(-1) in red chili and soil. On the basis of the data generated, Deltamethrin 10 EC has been registered for use on chili in India and its Maximum Residue Limit has been fixed as 0.05 μg/g.
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Paramasivam M, Banerjee H. Degradation dynamics of flubendiamide in different types of soils. Bull Environ Contam Toxicol 2012; 88:511-514. [PMID: 22323050 DOI: 10.1007/s00128-012-0552-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2011] [Accepted: 01/27/2012] [Indexed: 05/31/2023]
Abstract
Residual dynamics of flubendiamide in three different types of soils were investigated under laboratory condition. Flubendiamide was applied at 5 and 10 μg g(-1) for each soil and samples drawn periodically were analyzed on HPLC. The results showed that the degradation of flubendiamide in soils were followed first-order kinetics and its average half-lives in three kinds of soils were ranged from 37.62 to 60.21 days. The persistence of flubendiamide in soils significantly increased in the order of coastal soil > red and lateritic soil > new alluvial.
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Affiliation(s)
- M Paramasivam
- AINP on Pesticide Residue Laboratory, Department of Agricultural Chemicals, Bidhan Chandra Krishi Viswavidyalaya, Kalyani, 741235, West Bengal, India.
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Paramasivam M, Banerjee H. Persistence and dissipation of the insecticide flubendiamide and its metabolite desiodo flubendiamide residues in tomato fruit and soil. Bull Environ Contam Toxicol 2012; 88:344-348. [PMID: 22065126 DOI: 10.1007/s00128-011-0461-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2011] [Accepted: 10/28/2011] [Indexed: 05/31/2023]
Abstract
A method for residue analysis of flubendiamide and its metabolite desiodo flubendiamide was developed using high performance liquid chromatography. This method was then used to evaluate the residual level and dissipation rate of flubendiamide and desiodo flubendiamide in the tomato fruit. The half-life of flubendiamide in tomato fruit was 1.64 and 1.98 days in recommended and double of the recommended dose, respectively. Tomato fruit and soil samples analyzed on the 10th day after the last spray revealed that flubendiamide and its metabolite desiodo flubendiamide residues at below determination level (0.01 μg g(-1)) at either dose of application.
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Affiliation(s)
- M Paramasivam
- Department of Agricultural Chemicals, AINP on Pesticide Residue Laboratory, Bidhan Chandra Krishi Viswavidyalaya, Kalyani, 741235, West Bengal, India.
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Paramasivam M, Banerjee H. Simultaneous determination of flubendiamide its metabolite desiodo flubendiamide residues in cabbage, tomato and pigeon pea by HPLC. Bull Environ Contam Toxicol 2011; 87:452-456. [PMID: 21858703 DOI: 10.1007/s00128-011-0389-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2011] [Accepted: 08/10/2011] [Indexed: 05/31/2023]
Abstract
A sensitive and simple method for simultaneous analysis of flubendiamide and its metabolite desiodo flubendiamide in cabbage, tomato and pigeon pea has been developed. The residues were extracted with QuEChERS method followed by dispersive solid-phase extraction with primary secondary amine sorbent to remove co extractives, prior to analysis by HPLC coupled with UV-Vis detector. The recoveries of flubendiamide and desiodo flubendiamide were ranged from 85.1 to 98.5% and 85.9 to 97.1% respectively with relative standard deviations (RSD) less than 5% and sensitivity of 0.01 μg g(-1). The method offers a less expensive and safer alternative to the existing residue analysis methods for vegetables.
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Affiliation(s)
- M Paramasivam
- Department of Agricultural Chemicals, AINP on Pesticide Residue Laboratory, Bidhan Chandra Krishi Viswavidyalaya, Kalyani 741235, West Bengal, India.
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Banerjee H, Ganguly P, Roy S, Banerjee D, Paramasivam M, Banerjee T, Sharma KK. Persistence and safety risk assessment of propineb in Indian tea. Environ Monit Assess 2010; 170:311-314. [PMID: 19911290 DOI: 10.1007/s10661-009-1234-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2009] [Accepted: 10/29/2009] [Indexed: 05/28/2023]
Abstract
A supervised field trial was conducted on tea with propineb at 1,750 and 3,500 g a.i./ha at two locations (Assam and Darjeeling), applied thrice at an interval of 10 days during the year 2006-2007. Propineb residue was measured spectrophotometrically at 435 nm in terms of CS2. The initial deposit of propineb in green tea leaves were found to be in the range of 16.26-35.96 mg/kg and the residue persisted up to 10 days irrespective of doses and locations with half-life value ranging from 2.24 to 2.43 days and preharvest interval of 17.17-21.37 days. Made tea residues ranged from 9.27 to 20.86 mg kg(-1) on 7 days and no residues could be detected on 14 days. Infusion study indicated that propineb did not infuse into tea liquor from made tea. The limit of determination was found to be 0.1 mg kg(-1) in terms of propineb for green tea leaves, made tea, and tea liquor. The tea applied with the recommended dose of propineb is safe for consumption as liquor.
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Affiliation(s)
- Hemanta Banerjee
- AINP on Pesticide Residue Laboratory, Department of Agricultural Chemicals, Bidhan Chandra Krishi Viswavidyalaya, Kalyani, 741235, West Bengal, India.
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Paramasivam M, Poi R, Banerjee H, Bandyopadhyay A. High-performance thin layer chromatographic method for quantitative determination of curcuminoids in Curcuma longa germplasm. Food Chem 2009. [DOI: 10.1016/j.foodchem.2008.07.051] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Paramasivam M, Aktar MW, Poi R, Banerjee H, Bandyopadhyay A. Occurrence of curcuminoids in Curcuma longa : A quality standardization by HPTLC. BANGL J PHARMACOL 2008. [DOI: 10.3329/bjp.v3i2.833] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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Chowdhury AG, Das C, Kole RK, Banerjee H, Bhattacharyya A. Residual fate and persistence of endosulfan (50 WDG) in Bengal gram (Cicer arietinum). Environ Monit Assess 2007; 132:467-73. [PMID: 17171238 DOI: 10.1007/s10661-006-9549-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2006] [Accepted: 09/26/2006] [Indexed: 05/13/2023]
Abstract
Residual fate and dissipation pattern of endosulfan (50 WDG) in soil and plant was studied by gas liquid chromatography following twice applications (at 350 g and 700 g a.i. ha(-1)) in chick-pea, Bengal gram (Cicer arietinum) at vegetative and flowering stages of the crop. The initial residues of Endosulfan (alpha + beta + endosulfan sulfate) in plant following second application was 23.40-57.91 microg g(-1) and its maximum deposit in soil was 1.00-2.45 microg g(-1) after 1 day. Dissipation followed first order reaction kinetics and the half-life values were 2.6-2.9 days in green foliage and 4.4-5.0 days in soil. A pre-harvest interval of 14-19 days was recommended for green foliage. No residues were detected in harvested seeds. Maximum concentration of the metabolite endosulfan sulfate was 0.152-0.473 microg g(-1) in soil and 5.42-9.40 microg g(-1) in plant on third day. Endosulfan-beta was more persistent than alpha-isomer attributable to higher conversion of the later to endosulfan sulfate in soil and plant.
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Affiliation(s)
- Amit Ghosh Chowdhury
- Department of Agricultural Chemicals, Faculty of Agriculture, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur 741252, West Bengal, India
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Singh SK, Raha P, Banerjee H. Banned organochlorine cyclodiene pesticide in ground water in Varanasi, India. Bull Environ Contam Toxicol 2006; 76:935-41. [PMID: 16855898 DOI: 10.1007/s00128-006-1008-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2005] [Accepted: 04/21/2006] [Indexed: 05/10/2023]
Affiliation(s)
- S K Singh
- Department of Soil Science and Agricultural Chemistry, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi 221005, India
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Bhattacharyya J, Banerjee H, Das SP, Bhattacharyya A. Metabolism of fenazaquin, an acaricide in tea plant. Bull Environ Contam Toxicol 2005; 75:569-73. [PMID: 16385964 DOI: 10.1007/s00128-005-0789-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Affiliation(s)
- J Bhattacharyya
- Pesticide Residue Laboratory, Department of Agricultural Chemicals, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur-741252, Nadia, West Bengal, India
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Banerjee H, Hawkins Z, Williams J, Blackshear M, Sawyer C, Cezares L, Pramanik SK, Williams A. Search for a novel biomarker for the brain cancer astrocytoma by using surface enhanced laser desorption/ionisation (SELDI) technique. Cell Mol Biol (Noisy-le-grand) 2004; 50:733-6. [PMID: 15641164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
The protein chip surface enhanced laser desorption/ionisation (SELDI) technique is a highly versatile analytical mass spectrometry system with considerable potential for detection, identification and quantitation of protein complex mixtures. Astrocytoma is a tumour of the astrocytes with a very poor prognosis. There is no effective biomarker system for detection of astrocytoma. The SELDI technique was used to study differential protein expression in astrocytoma cells in comparison to normal brain astrocytes. Several novel proteins were found to be expressed in the astrocytoma cells, not present in the astrocytes.
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Affiliation(s)
- H Banerjee
- Biological Sciences Department, Elizabeth City State University under The University of North Carolina, Elizabeth City, NC 27909, USA.
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Saha K, Saha T, Banerjee H, Bhattacharyya A, Chowdhury A, Somchoudhury AK. Persistence of dicofol residue on tea under North-East Indian climatic conditions. Bull Environ Contam Toxicol 2004; 73:347-350. [PMID: 15386050 DOI: 10.1007/s00128-004-0434-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Affiliation(s)
- K Saha
- Department of Agricultural Entomology, Department of Agricultural Chemicals, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur 741252, West Bengal, India
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Bhattacharyya J, Banerjee H, Bhattacharyya A. Photodecomposition of an acaricide, fenazaquin, in aqueous alcoholic solution. J Agric Food Chem 2003; 51:4013-4016. [PMID: 12822939 DOI: 10.1021/jf034034c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Fenazaquin (I) is a new acaricide of the quinazoline class. The photodecomposition of I was studied in aqueous methanolic and 2-propanolic solution under UV light (30 h) and sunlight (70 h) separately. The photolytic half-lives in aqueous methanolic solution were found to be 17.1 h (UV) and 38.1 h (sunlight), whereas these were 12.9 h (UV) and 29.2 h (sunlight) for aqueous 2-propanolic solution; all followed a first-order reaction kinetics. Six photoproducts were obtained: beta-phenyl (p-tert-butyl) ethyl alcohol (II), 4-hydroxyquinazoline (III), p-tert-butyl vinyl benzene (IV), 2,4-dihydroxyquinazoline (V), phenyl (p-tert-butyl) acetic acid (VI), and 2-methyl-2-[4'-(2' '-hydroxyethyl)phenyl]propanoic acid (VII). Compounds VI and VII could be isolated only from aqueous 2-propanolic solution under sunlight irradiation. The major degradation products are formed as a result of cleavage of the ether bridge linking the quinazoline and phenyl ring systems of the molecule, oxidation of the tert-butyl substituent, and oxidation of the heterocyclic portion of the quinazoline ring. A probable mechanism of formation of the photoproducts is also suggested.
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Affiliation(s)
- Jayati Bhattacharyya
- Pesticide Residue Laboratory, Department of Agricultural Chemicals, Faculty of Agriculture, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur 741 252, West Bengal, India
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Banerjee H, Hawkins Z, Johnson T, Eley S, Alikhan A, Mcdaniel M, Singh I, Raymond J. Identification of a mouse orthologue of the CED-6 gene of Caenorhabditis elegans. Plasmid 2003; 49:30-3. [PMID: 12583998 DOI: 10.1016/s0147-619x(02)00106-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The rapid engulfment of apoptotic cells is a specialized innate immune response used by organisms to remove apoptotic cells. In mammals, several receptors that recognize apoptotic cells have been identified. Previous analysis of the engulfment gene ced-6 in Caenorhabditis elegans (C. elegans) has suggested that CED-6 is an adapter protein that participates in signal transduction pathway that mediates the specific recognition and engulfment of apoptotic cells. Here, we describe our isolation and partial characterization of a mouse cDNA, which is like an orthologue of C. elegans CED-6. PCR screening of mouse cDNA pool with primers designed from the C. elegans CED-6 cDNA sequence resulted in about 300 bp PCR product which was partially sequenced and then screened to a mouse full-length cDNA library. Thus in this study we report the identification of a novel C. elegans CED-6-like orthologue in mouse, which has probable apoptotic like function.
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Affiliation(s)
- H Banerjee
- Department of Biology, Elizabeth City State University under University of North Carolina, Campus Box 930, Elizabeth City, NC 27909, USA.
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Kole RK, Banerjee H, Bhattacharyya A. Monitoring of market fish samples for endosulfan and hexachlorocyclohexane residues in and around Calcutta. Bull Environ Contam Toxicol 2001; 67:554-559. [PMID: 11779071 DOI: 10.1007/s001280159] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Affiliation(s)
- R K Kole
- AICRP on Pesticide Residues, Department of Agricultural Chemicals, Mohanpur, West Bengal, India
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Singh R, Banerjee H, Green MR. Differential recognition of the polypyrimidine-tract by the general splicing factor U2AF65 and the splicing repressor sex-lethal. RNA 2000; 6:901-11. [PMID: 10864047 PMCID: PMC1369966 DOI: 10.1017/s1355838200000376] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
The polypyrimidine-tract (Py-tract) adjacent to 3' splice sites is an essential splicing signal and is recognized by several proteins, including the general splicing factor U2AF65 and the highly specific splicing repressor Sex-lethal (SXL). They both contain ribonucleoprotein-consensus RNA-binding motifs. However, U2AF65 recognizes a wide variety of Py-tracts, whereas SXL recognizes specific Py-tracts such as the nonsex-specific Py-tract of the transformer pre-mRNA. It is not understood how these seemingly similar proteins differentially recognize the Py-tract. To define these interactions, we used chemical interference and protection assays, saturation mutagenesis, and RNAs containing modified nucleotides. We find that these proteins recognize distinct features of the RNA. First, although uracils within the Py-tract are protected from chemical modification by both of these proteins, modification of any one of seven uracils by hydrazine, or any of eight phosphates by ethylnitrosourea strongly interfered with the binding of SXL only. Second, the 2' hydroxyl groups or backbone conformation appeared important for the binding of SXL, but not U2AF65. Third, although any of the bases (cytosine >> adenine > guanine) could substitute for uracils for U2AF65 binding, only guanine partially substituted for certain uracils for SXL binding. The different dependence on individual contacts and nucleotide preference may provide a basis for the different RNA-binding specificities and thus functions of U2AF65 and SXL in 3' splice site choice.
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Affiliation(s)
- R Singh
- Department of Molecular, Cellular, and Developmental Biology, University of Colorado at Boulder, 80309, USA.
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Abstract
Certain yeast strains secrete a protein toxin, which inhibits the growth of sensitive pathogens and yeasts. Studies have shown that production of the toxin is dependent on presence of linear, double-stranded DNA plasmids in the killer yeasts. In the yeast Pichia pastoris, two linear double-stranded DNA plasmids have been identified. In the present study, the search for toxin-producing capability in P. pastoris has been conducted. No killer activity could be detected when 14 different indicator strains were tested.
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Affiliation(s)
- H Banerjee
- Department of Biology, Long Island University, Brooklyn Campus, New York, 11201-8423, USA
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Abstract
Two DNA plasmids, approximately 11 and 8 kb in size, have been identified in a strain of the yeast Pichia pastoris (Northern Regional Research Laboratories No. Y4290). The plasmids are resistant to RNase A and lambda exonuclease, but are sensitive to digestion by DNase I, suggesting that they are linear and double-stranded DNA with 5'-protected ends. A restriction map has been constructed for the 11-kb plasmid, confirming that it is linear.
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Affiliation(s)
- H Banerjee
- Department of Biology, Long Island University, Brooklyn Campus, New York, USA
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Ravichandran R, Banerjee H. Support for information systems usage in banks. International Journal of Information Management 1994. [DOI: 10.1016/0268-4012(94)90091-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Affiliation(s)
- H Banerjee
- Bidhan Chandra Krishi Viswavidyalaya, Department of Agricultural Chemistry & Soil Science, Kalyani 741235, West Bengal, India
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Banerjee R, Banerjee H. Comment on "Functional integral for Weyl fermions and the effective action". Phys Rev D Part Fields 1989; 39:1254-1256. [PMID: 9959773 DOI: 10.1103/physrevd.39.1254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Banerjee H, Bhattacharya G, Bhattacharyya JS. Induced fermionic charge in background gauge theories in odd space-time dimensions. Phys Rev D Part Fields 1988; 37:1706-1708. [PMID: 9958861 DOI: 10.1103/physrevd.37.1706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Sengupta M, Bhattacharyya JS, Banerjee H. Identical phase-space constraint structure of three-dimensional QED with or without the Chern-Simons term. Phys Rev D Part Fields 1987; 35:3270-3271. [PMID: 9957576 DOI: 10.1103/physrevd.35.3270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Banerjee H. On Sommerfeld’s approximation in high energy photoelectric effect and one quantum annihilation of positrons in theK-shell. ACTA ACUST UNITED AC 1958. [DOI: 10.1007/bf02859542] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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