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Room temperature synthesis and binding studies of solution-processable histamine‐imprinted microspheres

Citation

Romano, EF and Holdsworth, CI and Quirino, JP and So, RC, Room temperature synthesis and binding studies of solution-processable histamine‐imprinted microspheres, Journal of Molecular Recognition, 31, (1) Article e2659. ISSN 1099-1352 (2017) [Refereed Article]


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DOI: doi:10.1002/jmr.2659

Abstract

Accurate quantification of histamine levels in food and in biological samples is important for monitoring the quality of food products and for the detection of pathophysiological conditions. In this study, solution processable histamine-imprinted microspheres were synthesized at 30C via dilute free radical phototochemical polymerization technique using ethylene glycol dimethacrylate (EGDMA) as the crosslinker and methacrylic acid (MAA) as the monomer. The processability of the resulting polymer is dictated by the monomer feed concentration (eg, 4 wt% 80:20 EGDMA:MAA formulation) and solvent (acetonitrile). Whereas, the particle size is influenced by the monomer feed concentration, the presence of template molecule, and independent of the crosslinker content. Evaluation of the binding performance of the photochemically imprinted polymers (PCP) with different crosslinker content (80 and 90 wt%) indicated that the selective binding capacity was notably higher in PCP-80 (N= 16.0 μmol/g) compared to PCP-90 (N= 10.1 μmol/g) when analyzed via frontal analysis capillary electrophoresis (FACE) using Freundlich isotherm. In addition, PCP-80 microspheres are more selective toward histamine than conventional thermal polymers (CTP-80) prepared at 60C in the presence of structural analogs such as histidine, imidazole, and tryptamine under cross-rebinding and competitive conditions. These results demonstrated that histamine-selective imprinted polymers can be obtained readily using room temperature photochemical polymerization where these materials can be subsequently used as recognition element for optical-based histamine sensing.

Item Details

Item Type:Refereed Article
Keywords:molecularly imprinted materials, histamine, microspheres
Research Division:Chemical Sciences
Research Group:Analytical Chemistry
Research Field:Separation Science
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Chemical Sciences
Author:Quirino, JP (Associate Professor Lito Quirino)
ID Code:123461
Year Published:2017
Funding Support:Australian Research Council (FT100100213)
Deposited By:Chemistry
Deposited On:2018-01-09
Last Modified:2018-01-09
Downloads:0

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