Journal
FOOD CHEMISTRY
Volume 262, Issue -, Pages 86-93Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2018.04.076
Keywords
Avermectins; Juice; Milbemycins; Pipette-tip molecularly imprinted polymer solid-phase extraction; Water
Funding
- CNPq (Conselho Nacional de Desenvolvimento Cientifico e Tecnologico)
- CAPES (Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior)
- FAPEMIG (Fundacao de Amparo a Pesquisa do Estado de Minas Gerais)
- FAPEMIG [REDE-113/10, CEX-RED-0010-14]
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A simple HPLC method was developed for the determination of abamectin (ABA), eprinomectin (EPR), and moxidectin (MOX). Pipette-tip molecularly imprinted polymer solid-phase extraction (PT-MIP-SPE) using poly (1-vinylimidazole-co-trimethylolpropane trimethacrylate) as a selective adsorbent material was studied in detail, including the washing solvent, type and volume of eluent, pH, quantity of adsorbent material and sample volume. The performance criteria for linearity, sensitivity, precision, accuracy, recovery, robustness and stability have been assessed and were within the recommended guidelines. The mean extraction recoveries/relative standard deviation for ABA 1b, EPR, ABA 1a and MOX were 98.77 +/- 3.82%, 88.19 +/- 2.57%, 110.54 +/- 1.52% and 100.42 +/- 0.59%, respectively. Finally, the results proved that PT-MIP-SPE coupled to HPLC-UV is an economical, simple and easy-to-perform technique, and presented a high potential for extraction of macrocyclic lactones in mineral water and grape and juice samples.
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