An electrochemical sensor for gallic acid based on Fe2O3/electro-reduced graphene oxide composite: Estimation for the antioxidant capacity index of wines

Gao, Feng; Zheng, Delun; Tanaka, Hidekazu; Zhan, Fengping; Yuan, Xiaoning; Gao, Fei; Wang, Qingxiang

doi:10.1016/j.msec.2015.07.025

Cited by 97 publications

(34 citation statements)

References 37 publications

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“…Therefore, in order to probe the analytical performance of the electrodes toward GA, DPV was applied in the quantitative tests. The DPV electrochemical technique offers more advantages for quantitative analysis than CV due to its merits of background response and lower capacitive current, as well as higher current sensitivity [53]. Fig.…”

Section: Electrochemical and Analytical Performancementioning

confidence: 99%

Synergy between Printex nano-carbons and silver nanoparticles for sensitive estimation of antioxidant activity

Raymundo‐Pereira

Campos

Prado

et al. 2016

Analytica Chimica Acta

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We report on the synthesis, characterization and applications of a Printex L6 carbon-silver hybrid nanomaterial (PC-Ag), which was obtained using a polyol method. In addition, we also highlight the use of Printex L6 nano-carbon as a much cheaper alternative to the use of carbon nanotubes and graphene. The silver nanoparticles (AgNP) were prepared directly on the surface of the Printex 6L carbon "nanocarbon" material using ethylene glycol as the reducing agent. The hybrid nanomaterial was characterized by High-angle annular dark-field transmission electron microscopy (HAADF-TEM), energy-dispersive X-ray spectroscopy (EDX), selected area electron diffraction (SAED), Raman spectroscopy and cyclic voltammetry. Optimized electrocatalytic activity on glassy carbon electrode was reached for the architecture GC/PC-Ag, the silver nanoparticles with size ranging between 1 and 2 nm were well-distributed throughout the hybrid material. The synergy between PC nano-carbons and AgNPs was verified by detection of gallic acid (GA) at a low applied potential (0.091 V vs. Ag/AgCl). GA detection was performed in a concentration range between 5.0 × 10(-7) and 8.5 × 10(-6) mol L(-1), with a detection limit of 6.63 × 10(-8) mol L(-1) (66.3 nmol L(-1)), which is considerably lower than similar devices. The approach for fabricating the reproducible GC/PC-Ag electrodes is entirely generic and may be explored for other types of (bio)sensors and devices.

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Section: Electrochemical and Analytical Performancementioning

confidence: 99%

Synergy between Printex nano-carbons and silver nanoparticles for sensitive estimation of antioxidant activity

Raymundo‐Pereira

Campos

Prado

et al. 2016

Analytica Chimica Acta

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“…In order to get antioxidant capacity of wine, electrochemical methods have proved to be interesting alternative strategies to classical spectrophotometric methods, which monitor the formation or the disappearance of radical-related chromogenic compounds (Hoyos-Arbeláez, Vázquez, & Contreras-Calderón, 2017). Different authors have indeed attempted to provide estimated antioxidant capacity index or electrochemical index of wines, based in particular on voltammetric analyses (Gao et al, 2015;Kilmartin, Zou, & Waterhouse, 2001;Lino et al, 2014). It has been shown in particular, that anodic currents related to the oxidation of selected polyphenols could be selectively monitored (Makhotkina & Kilmartin, 2009).…”

Section: Introductionmentioning

confidence: 99%

Electrochemical triggering of the Chardonnay wine metabolome

Roullier-Gall¹,

Kanawati²,

Hemmler³

et al. 2019

Food Chemistry

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“…Up to now, there are several electroanalytical methods reported for the determination of the total antioxidant capacity (Pekec et al 2013;Rebelo et al 2013;Tirawattanakoson et al 2016;Gao et al 2015;Petkovic et al 2015) and chromatographic methods using different detectors such as highperformance liquid chromatography (HPLC) in combination with electrospray ionization tandem mass spectrometry (Lijia et al 2014), with nuclear magnetic resonance and mass spectroscopy (NMR-MS) (Lommen et al 2000;Tsao et al 2003), Electronic supplementary material The online version of this article (doi:10.1007/s12161-017-0935-x) contains supplementary material, which is available to authorized users.…”

Section: Introductionmentioning

confidence: 99%

Highly Selective Electrochemical Determination of Phlorizin Using Square Wave Voltammetry at a Boron-Doped Diamond Electrode

et al. 2017

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A boron-doped diamond electrode was used as an electrochemical sensor for the determination of phlorizin (aka phloridzin, phlorrhizin) using square wave voltammetry (SWV). Phlorizin (Phl) exhibited a well-defined oxidation peak at +0.9 V (versus Ag/AgCl electrode 3 M KCl) in solutions with a pH value of 6.0. Parameters such as pH value and scan rate were optimized for cyclic voltammetry as well as amplitude and frequency for SWV. The sensor gave excellent response with a wide linear dynamic range for concentrations of phlorizin from 3 to 100 μM with a detection limit of 0.23 μM and a good repeatability (± 0.9%, n = 7 measurements, c = 10 μM). The effect of interferences by most common compounds was tested, and the method was successfully applied to the determination of the title compound in apple root extracts and urine samples with satisfactory recovery.

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An electrochemical sensor for gallic acid based on Fe2O3/electro-reduced graphene oxide composite: Estimation for the antioxidant capacity index of wines

Cited by 97 publications

References 37 publications

Synergy between Printex nano-carbons and silver nanoparticles for sensitive estimation of antioxidant activity

Synergy between Printex nano-carbons and silver nanoparticles for sensitive estimation of antioxidant activity

Electrochemical triggering of the Chardonnay wine metabolome

Highly Selective Electrochemical Determination of Phlorizin Using Square Wave Voltammetry at a Boron-Doped Diamond Electrode

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