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Findings on Pesticides Described by Researchers at Pesticide Toxicology Laboratory (Determination of 17 organophosphate pesticide residues in mango...

September 2, 2014



Findings on Pesticides Described by Researchers at Pesticide Toxicology Laboratory (Determination of 17 organophosphate pesticide residues in mango by modified QuEChERS extraction method using GC-NPD/GC-MS and hazard index estimation in ...)

By a News Reporter-Staff News Editor at Life Science Weekly -- Investigators publish new report on Pesticides. According to news reporting originating from Lucknow, India, by NewsRx correspondents, research stated, "A total of 162 samples of different varieties of mango: Deshehari, Langra, Safeda in three growing stages (Pre-mature, Unripe and Ripe) were collected from Lucknow, India, and analyzed for the presence of seventeen organophosphate pesticide residues. The QuEChERS (Quick, Easy, Cheap, Effective, Rugged and Safe) method of extraction coupled with gas chromatography was validated for pesticides and qualitatively confirmed by gas chromatography-mass spectrometry."

Our news editors obtained a quote from the research from Pesticide Toxicology Laboratory, "The method was validated with different concentrations of mixture of seventeen organophosphate pesticides (0.05, 0.10, 0.50 mg kg(-1)) in mango. The average recovery varied from 70.20% to 95.25% with less than 10% relative standard deviation. The limit of quantification of different pesticides ranged from 0.007 to 0.033 mg kg(-1). Out of seventeen organophosphate pesticides only malathion and chlorpyriphos were detected. Approximately 20% of the mango samples have shown the presence of these two pesticides. The malathion residues ranged from ND-1.407 mg kg(-1) and chlorpyriphos ND-0.313 mg kg(-1) which is well below the maximum residues limit (PFA-1954). In three varieties of mango at different stages from unpeeled to peeled sample reduction of malathion and chlorpyriphos ranged from 35.48%-100% and 46.66%-100% respectively. The estimated daily intake of malathion ranged from 0.032 to 0.121 g kg(-1) and chlorpyriphos ranged from zero to 0.022 g kg(-1) body weight from three different stages of mango. The hazard indices ranged from 0.0015 to 0.0060 for malathion and zero to 0.0022 for chlorpyriphos."

According to the news editors, the research concluded: "It is therefore indicated that seasonal consumption of these three varieties of mango may not pose any health hazards for the population of Lucknow, city, India because the hazard indices for malathion and chlorpyriphos residues were below to one."

For more information on this research see: Determination of 17 organophosphate pesticide residues in mango by modified QuEChERS extraction method using GC-NPD/GC-MS and hazard index estimation in Lucknow, India. Plos One, 2014;9(5):e96493. (Public Library of Science - www.plos.org; Plos One - www.plosone.org)

The news editors report that additional information may be obtained by contacting A.K. Srivastava, Pesticide Toxicology Laboratory, CSIR-Indian Institute of Toxicology Research, (Council of Scientific and Industrial Research, Govt of India), Mahatma Gandhi Marg, Lucknow, India. Additional authors for this research include S. Rai, M.K. Srivastava, M. Lohani, M.K. Mudiam and L.P Srivastava (see also Pesticides).

Keywords for this news article include: Asia, India, Lucknow, Pesticides, Agrochemicals.

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Life Science Weekly


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