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Reference type: Journal
Authors: Song B, Zhou YS, Jin H, Jing T, Zhou TT, Hao QL, Zhou YK, Mei SR, Lee YI
Article Title: Selective and sensitive determination of erythromycin in honey and dairy products by molecularly imprinted polymers based electrochemical sensor.
Publication date: 2014
Journal: Microchemical Journal
Volume: 116
Page numbers: 183-190.
DOI: 10.1016/j.microc.2014.05.010
Alternative URL: http://www.sciencedirect.com/science/article/pii/S0026265X14000861

Abstract: A highly selective and sensitive sensor has been developed for the determination of erythromycin (ERY) using molecularly imprinted polymers (MIPs) based electrochemical sensor. MIPs were adapted as a selective recognition element for enhancing the selectivity and sensitivity of the proposed electrochemical sensor. MIPs were synthesized and then used for the preparation of MIPs modified carbon paste (MIPs-CP) electrode. Our synthesized MIPs exhibited high adsorption capacity to ERY, with maximum binding amount (Qmax) of 93.5 mg g-1 and imprinting factor (IF) of 2.1. Subsequently, the prepared electrode was used for quantitative determination of ERY by differential pulse voltammetry (DPV) method. The MIPs-CP electrode exhibited an excellent current response toward ERY, compared with non-imprinted polymers modified carbon paste (NIPs-CP) electrode. Furthermore, for structurally similar compounds, MIPs-CP electrode possessed to be highly selective for ERY. Under the optimum conditions, the linear calibration range was 5.0 x 10-8 - 1.0 x 10-5 mol L-1, and the limit of detection (LOD) of the sensor was 1.9 x 10-8 mol L-1. The developed sensor was successfully applied for analyzing ERY in honey and dairy products. Benefiting from the great selectivity and sensitivity, the developed sensor demonstrates a promising potential for practical application for analyzing ERY residues in foodstuffs
Template and target information: erythromycin, ERY
Author keywords: Erythromycin, Molecularly imprinted polymers, carbon paste electrode, Electrochemical sensor, Foodstuff samples

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