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Screen-printed electrochemical-based sensor for taxifolin determination in edible peanut oils

Pierini, GD and Maccio, SA and Robledo, SN and Ferrari, AGM and Banks, CE and Fernández, H and Zon, MA (2020) Screen-printed electrochemical-based sensor for taxifolin determination in edible peanut oils. Microchemical Journal, 159. ISSN 0026-265X

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Abstract

An electrochemical method for the determination of Taxifolin (Tx) in peanut oil samples using screen-printed electrodes (SPEs) is reported for the first time. The different electroanalytical parameters such as scan rate, supporting electrolyte, pH and accumulation step were optimized. Interference studies were also explored for the determination of Tx in presence of daidzein, quercetin, trans-resveratrol and caffeic acid. The method developed for the Tx determination exhibits a linear response in the concentration range from 0.05 to 1 μM and a limit of detection of 0.021 μM. The electrochemical detection method proposed provides a novel, quick, low-cost, reliable and portable method for the in-situ quality control for monitoring the protected designation of origin of the “Córdoba, Argentina, Peanuts”.

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