Moulick, Madhurima and Das, Debangana and Nag, Shreya and Pramanik, Panchanan and Roy, Runu Banerjee (2025) Gadolinium oxide modified molecular imprinted polymer electrode for the electrochemical detection of theophylline in black tea. Journal of Food Composition and Analysis, 137 (B). p. 106994. ISSN 0889-1575, DOI https://doi.org/10.1016/j.jfca.2024.106994.
Full text not available from this repository.Abstract
The present study reported a facile approach to fabricate a molecular imprinted polymer electrode modified with nano-composites of gadolinium oxide (Gd2O3@TH-MIP-CPE) to detect theophylline in variants of black tea samples. The synthesized electrode material was characterized by scanning electron microscope, fourier transform infrared spectroscopy and UV-visible spectroscopy. The electroanalytic performance of the Gd2O3@THMIP-CPE electrode was studied using cyclic voltammetry (CV) and differential pulse voltammetry (DPV). The electrode exhibits a linear response from 50 mu M to 900 mu M with limit of detection being 2.004 mu M. The electrode showed significant repeatability (%RSD=1.19), reproducibility (%RSD=0.92) and stability (%RSD=1.015). To evaluate the predictive ability of the electrode, partial least square regression (PLSR) model has been developed by correlating the high-performance liquid chromatography (HPLC) values with the voltammogram signals recorded using the electrode. The average prediction accuracy obtained from the PLSR model is 91.3 % with root mean square error of calibration being as low as 0.73.
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Uncontrolled Keywords: | Molecular imprinted polymer; Electro-analytical; Theophylline; PLSR; Rare earth metal oxide |
| Subjects: | Q Science > Q Science (General) Q Science > QD Chemistry |
| Divisions: | Deputy Vice Chancellor (Research & Innovation) Office > Nanotechnology & Catalysis Research Centre |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 12 Mar 2025 08:28 |
| Last Modified: | 12 Mar 2025 08:28 |
| URI: | http://eprints.um.edu.my/id/eprint/47284 |
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