Recent Advances in Electroanalysis of Vitamins

Brunetti, Barbara

doi:10.1002/elan.201600097

Cited by 27 publications

(18 citation statements)

References 178 publications

(220 reference statements)

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“…The future research trend therefore concerns an in‐depth and detailed study of the applicability of the GC/BT/Pt sensor in the more strictly analytical context, which combines the electro‐analytical performance of the sensor with those of selectivity of the distribution chromatography. The aim would be to provide a reliable methodology for the detection of multi‐vitamins or more generally of multi‐analytes, in terms of analytical characteristics, applicability to real samples, ability to control interferents and other important applicative aspects, in relation to the existing methodologies based on electroanalytical techniques [59, 60].…”

Section: Resultsmentioning

confidence: 99%

Surface and Electrochemical Characterization of a New Layered GC/Betaine/Pt Electrode and Investigation on its Performance as a Sensor for two B Complex Vitamins, B1 and B6: Preliminary Results

et al. 2020

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The electrochemical preparation of a novel composite glassy carbon/betaine/platinum (GC/BT/Pt) electrode with meso‐ nano Pt globules dispersed on the outer surface and betaine, as intermediate layer, electrodeposited on GC by Cyclic Voltammetry (CV) or Pulsed Potential (PP) techniques, is presented. Surface analysis by Scanning Electron Microscopy (SEM) and X‐ray Photoelectron Spectroscopy (XPS) confirms the strategic role of grafted betaine in modulating GC/BT‐ interaction sites and the range of potentials for adequate platinum CV electrodeposition. The GC/BT/Pt performance, concerning sensitivity, linearity, work potentials and repeatability tests with Flow Injection Analysis (FIA), was ascertained for the detection of vitamins B1 and B6.

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Section: Resultsmentioning

confidence: 99%

Surface and Electrochemical Characterization of a New Layered GC/Betaine/Pt Electrode and Investigation on its Performance as a Sensor for two B Complex Vitamins, B1 and B6: Preliminary Results

et al. 2020

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“…For these reasons, they have to be supplemented from external sources, including food and pharmaceuticals. Since both the excess of a particular vitamin (called hypervitaminosis) and its deficiency (hypovitaminosis) or absence (avitaminosis) may result in serious health problems, there is a need for quantitative estimation of vitamins content in their known sources [2]. Particular attention should be paid to dietary supplements, towards which the requirements regarding their chemical composition are not strict enough, thus the declared amounts are often not accurate.…”

Section: Introductionmentioning

confidence: 99%

“…Due to the relatively low costs of the apparatus, short measurement time, and straightforward sample preparation [3], voltammetric methods have been developed for the determination of vitamins in a variety of matrices [2,4,5]. Nevertheless, an often encounter situation in electro-analysis is the overlapping of signals resulting from the similar formal potentials of the species present in the analyzed sample [5].…”

Section: Introductionmentioning

confidence: 99%

Separation of the overlapped vitamin B1 and B3 voltammetric peaks by means of Continuous Wavelet Transform and differentiation

Porada

Baś

2021

Monatsh Chem

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Due to the indubitable role of vitamins in maintaining human health, a lot of attention has been paid to the methods and analytical procedures of their determination. Voltammetric methods are of particular interest as they do not involve complex sample preparation, however, close values of the redox potential of some vitamins may result in peak overlapping, hindering the quantitative analysis. This paper addresses the separation of overlapped reduction peak of vitamins B1 and B3 by means of Continuous Wavelet Transform (with appropriately selected mother wavelets) and differentiation of the recorded voltammograms. These numerical algorithms allowed to obtained linear, single-variable calibration functions that comply with the applied in analytical chemistry criteria regarding the correlation coefficients and the limit of detection and quantification. Their relatively simple implementation does not include any manual interpretation step; thus, these algorithms provide impartial and reproducible results. The proposed methodology has been applied in the determination of vitamins B1 and B3 in dietary supplements, providing results consistent with the declaration of the manufacturer. Graphic abstract

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“…used the same electrode to study the biological interaction between TCH and lysozyme using binding capacity concept and molecular docking . Recently, Barbara Brunetti published a review discussing the recent advances in electroanalysis of vitamins in which the author states some voltammetric methods (such as stripping voltammetry ,) used for vitamin B1 determination. These methods are cheap, fast and characterized by very low LODs.…”

Section: Introductionmentioning

confidence: 99%

A Disposable Homemade Screen Printed Electrochemical Sensor for Vitamin B1 Determination in Multivitamin Ampoules: Potentiometric and Surface Morphology Studies

2017

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Thiamine chloride hydrochloride (TCH) is one of the B‐complex vitamins which resemble a very biologically important group of biomolecules. The first screen‐printed graphite ion‐selective sensor for the determination of TCH was prepared and characterized. The sensor is based on TCH‐tetraphenylborate as electrode material. A number of parameters such as the type of solvent mediator, weight percent of the ion‐exchanger, test solution temperature and possible interferences were extensively studied. Moreover, the surface morphology of the prepared sensor was studied using scanning electron microscopy. The sensor shows a Nernstian slope of 30.60±0.07 mV/decade, a low LOD of 5.08×10−6 mol/L and a wide applicability range of 5.96×10−6‐1.00×10−2 mol/L. The sensing graphite ink remains usable for at least one month. Fast potentiometric response was obtained within 5 s and remains stable for at least 60 s. The sensor was applied to the analysis of TCH in pure solutions and multivitamin ampoules from the Egyptian market using the standard addition method and high recovery values of 97–102 % were obtained. Low %RSD values (0.27‐1.30) indicate high precision of the proposed sensor. Our sensor provides the advantages of disposability, simple preparation procedures, sensitivity and easy storage and transportation.

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Recent Advances in Electroanalysis of Vitamins

Cited by 27 publications

References 178 publications

Surface and Electrochemical Characterization of a New Layered GC/Betaine/Pt Electrode and Investigation on its Performance as a Sensor for two B Complex Vitamins, B1 and B6: Preliminary Results

Surface and Electrochemical Characterization of a New Layered GC/Betaine/Pt Electrode and Investigation on its Performance as a Sensor for two B Complex Vitamins, B1 and B6: Preliminary Results

Separation of the overlapped vitamin B1 and B3 voltammetric peaks by means of Continuous Wavelet Transform and differentiation

A Disposable Homemade Screen Printed Electrochemical Sensor for Vitamin B1 Determination in Multivitamin Ampoules: Potentiometric and Surface Morphology Studies

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