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Reference type: Journal
Authors: Chatterjee TN, Das D, Roy RB, Tudu B, Sabhapondit S, Tamuly P, Pramanik P, Bandyopadhyay R
Article Title: Molecular Imprinted Polymer Based Electrode for Sensing Catechin (+C) in Green Tea.
Publication date: 2018
Journal: IEEE Sensors Journal
Volume: 18
Issue: (6)
Page numbers: 2236-2244.
DOI: 10.1109/JSEN.2018.2791661
Alternative URL: http://ieeexplore.ieee.org/abstract/document/8253492/

Abstract: Green tea is believed to be a healthy beverage due to a number of therapeutic benefits. Catechin, one of its constituents, is an important antioxidant and possesses free radical scavenging abilities. This paper demonstrates a low cost solution related to the sensing of catechin (+C) using the principle of molecular imprinted polymer technique. Here the electrode was synthesized using the co-polymer of acrylonitrile and ethylene glycol dimethacrylate and was subsequently imprinted with catechin. The material was extensively characterized using Fourier transform infra-red spectroscope and field emission scanning electron microscope, respectively. Cyclic voltammetry and differential pulse voltammetry using the three electrode system were employed for determining the electrochemical characteristics of the proposed electrode. It exhibited a linear range from 5 to 100 μM with the limit of detection of 37 nm (S/N = 3). On studying the analytical characteristics, the electrode was found to be repeatable, reproducible, and offered a good selectivity. Our sensing device was subjected to green tea samples in order to study their catechin content. A partial least square regression model was developed for correlating the response with that of the high performance liquid chromatography data and it resulted in a prediction accuracy of about 92%
Template and target information: catechin, +C
Author keywords: carbon, electrodes, Graphite, polymers, Powders, sensitivity, sensors, molecular imprinted polymer, Catechin, Green tea, Partial least square regression, voltammetry

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