Abstract: The aim of this work was to develop a method for the clean-up and preconcentration of zearalenone from corn and wheat samples employing molecularly imprinted polymer (MIP) as selective sorbent for solid-phase extraction (SPE). Cereal samples were extracted with acetonitrile/water (75:25, v/v) and the extract was diluted with water and applied to an AFFINIMIP(TM) ZON MIP-SPE column. The column was then washed to eliminate the interferences and zearalenone was eluted with methanol and quantified using HPLC with fluorescence detection (λexc = 275/λem = 450 nm). The precision and accuracy of the method were satisfactory for both cereals at the different fortification levels tested and it gave recoveries between 82 and 87% (RSDr 2.5-6.2%, n = 3) and 86 and 90% (RSDr 0.9-6.8%, n = 3) for wheat and maize, respectively. MIP-SPE column capacity was determined to be not less than 6.6áμg of zearalenone and to be at least four times higher than that of immunoaffinity column (IAC). The application of AFFINIMIP(TM) ZON molecularly imprinted polymer as a selective sorbent material for detection of zearalenone fulfilled the method performance criteria required by the Commission Regulation (EC) No. 401/2006, demonstrating the suitability of the technique for the control of zearalenone in cereal samples
Template and target information: zearalenone, ZON, α-zearalenol, α-ZOL
Author keywords: zearalenone, Molecularly imprinted polymers, Solid-phase extraction, high-performance liquid chromatography, Fluorimetry