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Reference type: Journal
Authors: Hao Y, Gao RX, Liu DC, He GY, Tang YH, Guo ZJ
Article Title: Selective extraction and determination of chlorogenic acid in fruit juices using hydrophilic magnetic imprinted nanoparticles.
Publication date: 2016
Journal: Food Chemistry
Volume: 200
Page numbers: 215-222.
DOI: 10.1016/j.foodchem.2016.01.004
Alternative URL: http://www.sciencedirect.com/science/article/pii/S030881461630005X

Abstract: In this paper, the novel hydrophilic magnetic molecularly imprinted nanoparticles were developed for selective separation and determination of chlorogenic acid in aqueous fruit juices. The polymers were prepared by using amino-functionalized magnetic nanoparticles as carriers, branched polyethyleneimine as functional monomer, and chlorogenic acid as template molecule. Branched polyethyleneimine with abundant active amino groups could react with template sufficiently, and its unique dendritic structure may amplify the number of the imprinted cavities. Meanwhile, it would improve the hydrophilicity of imprinted materials for attaining high extraction efficiency. The resulted polymers exhibit fast kinetics, high adsorption capacity, and favorable selectivity. In addition, the obtained nanoparticles were used as solid-phase extraction sorbents for selective isolation and determination of chlorogenic acid in peach, apple, and grape juices (0.92, 4.21, and 0.75 μg mL-1, respectively)
Template and target information: chlorogenic acid
Author keywords: magnetic separation, Branched polyethyleneimine, Solid-phase extraction, Hydrophilicity, chlorogenic acid

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