Determination of pesticides in coconut (Cocos nucifera Linn.) water and pulp using modified QuEChERS and LC-MS/MS

卷:213

Ferreira, Jordana Alves ; Santos Ferreira, Joana Maria ; Talamini, Viviane ; Facco, Janice de Fatima ; Rizzetti, Tiele Medianeira ; Prestes, Osmar Damian ; Adaime, Martha Bohrer ; Zanella, Renato ; Grespan Bottoli, Carla Beatriz

Univ Estadual Campinas

关键词: Cocos nucifera Linn;    Pesticides;    Modified QuEChERS;    Coconut water;    Coconut pulp;    LC-MS/MS;   

DOI  :  10.1016/j.foodchem.2016.06.114

学科分类：食品科学和技术

【 摘 要 】

The use of pesticides is directly linked to improvements in productivity and to the preservation of coconut palms. However pesticide analysis is necessary to determine whether pesticide residues in the food products containing coconut are within the maximum residue limits (MRLs), ensuring the quality of these products. This work aimed to develop a method for multiresidue determination of ten pesticides in coconut water and pulp using QuEChERS and LC-MS/MS. The method was effective in terms of selectivity, linearity, matrix effect, accuracy and precision, providing LOD of 3 mu g kg(-1), LOQ of 10 mu g kg(-1) and recoveries between 70 and 120% with RSD lower than 20%. The developed method was applied to 36 samples in which residues of carbendazim, carbofuran, cyproconazole and thiabendazole were found below the LOQ in coconut water and pulp. (C) 2016 Elsevier Ltd. All rights reserved.