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Sensors 2011, 11(9), 8654-8664; doi:10.3390/s110908654
Article

A Surface Plasmon Resonance Sensor for the Detection of Deoxynivalenol Using a Molecularly Imprinted Polymer

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,
 and
*
Food Safety Research Center, Korea Food Research Institute, Sungnam 463-746, South Korea
* Author to whom correspondence should be addressed.
Received: 15 July 2011 / Revised: 30 August 2011 / Accepted: 30 August 2011 / Published: 5 September 2011
(This article belongs to the Section Physical Sensors)
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Abstract

The aim of the present work was to investigate the feasibility of applying the molecular imprinting polymer technique to the detection of the mycotoxin deoxynivalenol (DON) using a surface plasmon resonance (SPR) transducer. A molecularly imprinted polypyrrole (MIPPy) film was prepared via electropolymerization of pyrrole onto a bare Au chip in the presence of a template DON molecule. Atomic force microscope SPR analysis showed that the MIPPy film was deposited homogeneously on the Au surface, with a thickness of 5 nm. The MIPPy–SPR sensor exhibited a linear response for the detection of DON in the range of 0.1–100 ng/mL (R2 = 0.988). The selectivity efficiency of the MIPPy film for DON and its acetylated analogs 3-ADON and 15-ADON was 100, 19, and 44%, respectively. The limit of detection for DON with the MIPPy–SPR for a standard solution was estimated at >1 ng/mL. These results suggest that the combination of SPR sensing with a MIPPy film as a synthetic receptor can be used to detect DON.
Keywords: deoxynivalenol; polypyrrole; molecular imprinting polymer; surface plasmon resonance; synthetic receptor deoxynivalenol; polypyrrole; molecular imprinting polymer; surface plasmon resonance; synthetic receptor
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Choi, S.-W.; Chang, H.-J.; Lee, N.; Chun, H.S. A Surface Plasmon Resonance Sensor for the Detection of Deoxynivalenol Using a Molecularly Imprinted Polymer. Sensors 2011, 11, 8654-8664.

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