Using multiwalled carbon nanotube modified electrodes for the adsorptive striping voltammetric determination of hesperidin

Sims, Marcus J., Li, Qian, Kachoosangi, Roohollah Torabi, Wildgoose, Gregory and Compton, Richard G. (2009) Using multiwalled carbon nanotube modified electrodes for the adsorptive striping voltammetric determination of hesperidin. Electrochimica Acta, 54 (22). pp. 5030-5034.

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Abstract

Hesperidin, a flavone glycoside found in the skins and juices of citrus fruits, can be detected using multiwalled carbon nanotube (MWCNT)-modified electrodes using the technique of adsorptive stripping voltammetry (AdSV) with accumulation at open circuit potential. This is relevant because hesperidin can be used as an indication of the citrus fruit juice's freshness. The oxidation mechanism to explain the observed voltammetry corresponds to the redox chemistry of the guaiacol sub-unit within the hesperidin molecular structure. Hesperidin could be detected over a linear range up to 30 µM, and with a detection limit of 0.61 µM and 7 nM, with less than 5% variation between different electrodes, using cyclic voltammetric or square wave adsorptive stripping techniques respectively. This methodology was extended to MWCNT-modified screen-printed electrodes (MWCNT-SPEs), allowing the development of a cheap, mass produced, disposable sensor that we show is capable of measuring the concentration of hesperidin in real orange juice samples, and be applied within the citrus fruit industry.

Item Type: Article
Faculty \ School: Faculty of Science > School of Chemistry
University of East Anglia > Faculty of Science > Research Groups > Physical and Analytical Chemistry
University of East Anglia > Faculty of Science > Research Groups > Synthetic Chemistry
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Depositing User: Rachel Smith
Date Deposited: 29 Mar 2011 17:32
Last Modified: 25 Jul 2018 04:37
URI: https://ueaeprints.uea.ac.uk/id/eprint/27478
DOI: 10.1016/j.electacta.2008.10.056

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