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Reference type: Journal
Authors: Hu XP, Liu YW, Xia YD, Zhao FQ, Zeng BZ
Article Title: A novel ratiometric electrochemical sensor for the selective detection of citrinin based on molecularly imprinted poly(thionine) on ionic liquid decorated boron and nitrogen co-doped hierarchical porous carbon.
Publication date: 2021
Journal: Food Chemistry
Volume: 363
Article Number: 130385.
DOI: 10.1016/j.foodchem.2021.130385
Alternative URL: https://www.sciencedirect.com/science/article/pii/S0308814621013911

Abstract: Citrinin can cause serious human diseases, thus its detection in foods is necessary. Herein, a molecularly imprinted polymer-based ratiometric electrochemical sensor (MIP-RECS) was presented for citrinin detection. The sensor was fabricated by electropolymerization, using thionine as monomer and citrinin as template. The ionic liquid decorated boron and nitrogen co-doped hierarchical porous carbon (BN-HPC) as supporter, provided large surface for anchoring thionine and citrinin. Poly(thionine) not only acted as MIP, but also acted as reference probe. When [Fe(CN)6] 3-/4- was adopted as indicating probe, the resulting sensor demonstrated a wide linear detection range (i.e. 1 × 10-3 - 10 ng mL-1) and a low detection limit (i.e. 1 × 10-4 ng mL-1).The sensor was applied to the detection of spiked citrinin in real samples, and satisfactory recovery (i.e. 97% - 110%) was obtained. Hence, it was promising for citrinin detection
Template and target information: citrinin
Author keywords: Ratiometric electrochemical sensor, molecularly imprinted polymer, Poly(thionine), Ionic liquid, Citrinin, hierarchical porous carbon


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