Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/21977
Title: Application of the QuEChERS procedure and LC–MS/MS for the assessment of neonicotinoid insecticide residues in cocoa beans and shells Journal of Food Composition and Analysis
Authors: Dankyi, E.
Carboo, D.
Gordon, C.
Fomsgaard, I.S.
Keywords: Neonicotinoid insecticides
Cocoa beans
Cocoa shells
Food analysis
Food composition
QuEChERS
LC–MS/MS
Ghana
Issue Date: Sep-2015
Publisher: Elsevier - Journal of Food Composition and Analysis
Citation: Dankyi, E., Carboo D, Gordon C, Fomsgaard IS 2016 Application of the QuEChERS procedure and LC–MS/MS for the assessment of neonicotinoid insecticide residues in cocoa beans and shells Journal of Food Composition and Analysis 44, 149-157
Abstract: The Quick, Easy, Cheap, Effective, Rugged and Safe (QuEChERS) procedure was applied and validated for the analysis of neonicotinoid insecticide residues in cocoa bean matrix with high fat and high pigments. Samples employed in the study were fermented and dried beans obtained from major cocoa producing regions in Ghana where neonicotinoids are extensively used. Shells covering the beans were removed and analyzed separately to examine insecticide distribution. Analytes in both matrices were extracted in acetonitrile with sodium acetate and magnesium sulfate salts, cleaned up using a sorbent mixture of primary secondary amine (PSA), C18 and graphitized carbon black (GCB), and quantified using liquid chromatography tandem mass spectrometry (LC–MS/MS). Average recoveries at four levels of fortification ranged from 92 to 111% with relative standard deviation of 16% for all analytes. Limits of quantification ranged from 3 to 10 mg/kg for all neonicotinoids. Imidacloprid was the most frequently encountered neonicotinoid and was quantified in more than 10% of deshelled bean and 30% of cocoa shell samples, with concentrations ranging from 11.5 to 35.6 mg/kg and 11.8 to 214 mg/kg in cocoa beans and shells, respectively. The findings from this study suggest a need for greater efficiency in neonicotinoid application, to avoid the build-up of these insecticides to unsafe levels in cocoa beans.
Description: Article
URI: http://dx.doi.org/10.1016/j.jfca.2015.09.002
ISSN: 0889-1575
Appears in Collections:Institute for Environment and Sanitation Studies

Files in This Item:
There are no files associated with this item.


Items in UGSpace are protected by copyright, with all rights reserved, unless otherwise indicated.