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Reference type: Journal
Authors: Fang GZ, Fan C, Liu H, Pan MF, Zhu HD, Wang S
Article Title: A novel molecularly imprinted polymer on CdSe/ZnS quantum dots for highly selective optosensing of mycotoxin zearalenone in cereal samples.
Publication date: 2014
Journal: RSC Advances
Volume: 4
Issue: (6)
Page numbers: 2764-2771.
DOI: 10.1039/C3RA45172K

Abstract: A novel molecularly imprinted optosensing material (MIOM) based on ionic liquid (IL)-stabilized CdSe/ZnS quantum dots (QDs) was prepared, for highly selective and sensitive recognition of the mycotoxin zearalenone (ZON). ZON is expensive and highly toxic, so the ZON analog cyclodo-decanyl-2,4-dihydroxybenzoate (CDHB) was instead used as the template. MIOM was characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR) and adsorption experiment. Under optimal conditions, the relative fluorescence intensity of MIOM decreased linearly with increasing ZON concentration, in the range of 0.003-3.12 μmol L-1. MIOM had a detection limit of 0.002 μmol L-1. MIOM was used to detect ZON in corn, rice and wheat flours, and at three concentration levels 50, 100 and 500 ng g-1, ZON recoveries for these three cereals were 94.2-98.7%, 93.1-107.6% and 84.4-106.0%, respectively
Template and target information: zearalenone analog, ZON analog, cyclodo-decanyl-2,4-dihydroxybenzoate, CDHB, analog template, zearalenone, ZON

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