Journal
FOOD CONTROL
Volume 60, Issue -, Pages 7-11Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodcont.2015.07.001
Keywords
Fungicide; Pyrimethanil; Voltammetric sensor; beta-cyclodextrin; Carbon nanotubes
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Funding
- Fundacao para a Ciencia e Tecnologia FCT/MCTES project [PTDC/AGR-AAM/105044/2008]
- National Funds PIDDAC
- European Community Fund FEDER through COMPETE-Programa Operacional Factores de Cornpetitividade (POFC)
- Fundação para a Ciência e a Tecnologia [PTDC/AGR-AAM/105044/2008] Funding Source: FCT
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A sensitive electrochemical sensor was successfully developed based on a glassy carbon (GC) electrode modified by a combination of multi-walled carbon nanotubes (MWCNT) with beta-cyclodextrin (beta-CD) incorporated in a polyaniline film, and applied to detect and determine the fungicide pyrimethanil in pome fruit (apples). The beta-CD/MWCNT modified GC electrode displayed a detection limit of 1.04 mu M (0.21 mg/kg) which is below the maximum residue levels set for pyrimethanil in pome fruit and citrus fruit by EU regulations. The results indicate that the (beta-CD/MWCNT modified GC electrode exhibits efficient electrocatalytic oxidation of pyrimethanil with high reproducibility, repeatability and stability. Furthermore, the obtained results were in excellent agreement with those obtained using an established HPLC procedure. (C) 2015 Elsevier Ltd. All rights reserved.
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