Anodic voltammetric behavior of ascorbic acid and its selective determination in pharmaceutical dosage forms and some Rosa species of Turkey

Erdurak-Kiliç, C. S.; Uslu, Bengi; Doğan, Burcu; Ozgen, Ufuk; Özkan, Síbel A.; Coşkun, Maksut

doi:10.1134/s106193480611013x

Cited by 50 publications

(33 citation statements)

References 23 publications

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“…Among many analytes, ascorbic acid (AA), which is an important biomolecule, is frequently detected as it is a main nutrient and antioxidant found in vegetables, fruits and in other naturally occurring systems [2]. It is useful in activating an immune response, and it contributes in wound healing, iron absorption, osteogenesis collagen formation, and preservation of capillaries, bones and teeth [3]. It is usually recommended in the treatment of certain diseases such as Alzheimer’s, infertility HIV infections, atherosclerosis and cancer [4].…”

Section: Introductionmentioning

confidence: 99%

Highly Selective and Reproducible Electrochemical Sensing of Ascorbic Acid Through a Conductive Polymer Coated Electrode

2019

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The surface of an Au-disc electrode was modified through electro polymerization of aniline, in the presence of dodecyl benzene sulphonic acid (DBSA) and sulphuric acid (H2SO4) solution. The polymerization conditions were pre-optimized so that micelle formation and solution coagulation could be minimized and surfactant doped polyaniline film could be obtained through a quick, simple and one step polymerization route. The synthesized material was characterized via Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), scanning electron microscopy (SEM) and cyclic voltammetry (CV). The effective surface area of the Au-disc, calculated through cyclic voltammetry, was immensely increased through a polyaniline (PANI) coating (0.04 and 0.11 cm2 for bare and PANI coated gold respectively). The modified electrode was utilized for ascorbic acid (AA) sensing. The changing pH of electrolyte and scan rate influenced the PANI electrode response towards AA. The modified electrode was highly selective towards AA oxidation and showed a very low limit of detection i.e. 0.0267 μmol·L–1. Moreover, the PANI coating greatly reduced the sensing potential for AA by a value of around 140 mV when compared to that on a bare gold electrode.

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Section: Introductionmentioning

confidence: 99%

Highly Selective and Reproducible Electrochemical Sensing of Ascorbic Acid Through a Conductive Polymer Coated Electrode

2019

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“…Phenolic compounds are a complex group of substances that have attracted considerable attention due to their role in providing a characteristic flavor and color to wines and because their benefits to human health which are associated with their antioxidant activities [9,10]. Other antioxidants of interest present in wines are the ascorbic acid which is one of the most ubiquitous vitamins ever discovered and simultaneously, one of the most beneficial antioxidants [11,12] and glutathione, a major intracellular thiol compound that plays an important role in many biological processes such as intracellular reduction-oxidation metabolic cycles, transportation, protein synthesis, catabolism, and metabolism [2,4]. …”

Section: Introductionmentioning

confidence: 99%

Carbon Paste Electrodes Made from Different Carbonaceous Materials: Application in the Study of Antioxidants

Apetrei

Saja

et al. 2011

Sensors

106

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This work describes the sensing properties of carbon paste electrodes (CPEs) prepared from three different types of carbonaceous materials: graphite, carbon microspheres and carbon nanotubes. The electrochemical responses towards antioxidants including vanillic acid, catechol, gallic acid, l-ascorbic acid and l-glutathione have been analyzed and compared. It has been demonstrated that the electrodes based on carbon microspheres show the best performances in terms of kinetics and stability, whereas G-CPEs presented the smallest detection limit for all the antioxidants analyzed. An array of electrodes has been constructed using the three types of electrodes. As demonstrated by means of Principal Component Analysis, the system is able to discriminate among antioxidants as a function of their chemical structure and reactivity.

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“…In the case of irreversible redox couples, such as those confirmed for ascorbic acid and sulphite, the intensity of the cyclic voltammetric anodic oxidation peak can be directly correlated to the analyte concentration. Sulphite is irreversibly oxidized to sulphate (Lu et al, 1999;Skavas & Hemmingsen, 2007;Pisoschi, 2017), whereas oxidation of ascorbic acid to dehydroascorbic acid is followed by an irreversible solvation reaction at pH<4, yielding 2,3-diketogulonic acid, electroinactive (Erdurak-Kiliç et al, 2006;Pisoschi et al, 2014). From bare to modified electrodes based on advanced materials, good analytical performances with respect to accuracy and sensitivity in ascorbic acid and sulphite assay, were obtained (Erdurak-Kiliç et al, 2006;Pisoschi, 2014;Pisoschi et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Comparative Assessment of the Analytical Parameters in Ascorbic Acid and Sulphite Assay at a Spectrographic Carbon Working Electrode

Pisoschi

2018

“Agriculture for Life, Life for Agriculture” Conference Proceedings

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The aim of this study is the comparative investigation of spectrographic carbon electrode’s viability as working electrode, in ascorbic acid and sulphite asssessment. Cyclic voltammetry involves a linear sweeping of the potential, the analytical signal being represented by the anodic oxidation /cathodic reduction peak of the analyte. For both analytes, the electro-oxidation resulted in an anodic peak, correlable with ascorbic acid / sulphite concentration. The analytical range of linear response corresponded to 0.07 - 10 mM for ascorbic acid and to 15.5 mg/L - 4 g/L for sulphite. The relative standard deviation RSD (%) was 2.71 % for ascorbic acid and 2.88 % for sulphite. The sensitivities, given by the slopes of the calibration graphs were 88.88 μA/mmole/L for ascorbic acid and 477.37 μA/g/L for sulphite.

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Anodic voltammetric behavior of ascorbic acid and its selective determination in pharmaceutical dosage forms and some Rosa species of Turkey

Cited by 50 publications

References 23 publications

Highly Selective and Reproducible Electrochemical Sensing of Ascorbic Acid Through a Conductive Polymer Coated Electrode

Highly Selective and Reproducible Electrochemical Sensing of Ascorbic Acid Through a Conductive Polymer Coated Electrode

Carbon Paste Electrodes Made from Different Carbonaceous Materials: Application in the Study of Antioxidants

Comparative Assessment of the Analytical Parameters in Ascorbic Acid and Sulphite Assay at a Spectrographic Carbon Working Electrode

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