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Pregled bibliografske jedinice broj: 391143

Square-wave and cyclic voltammetry of epicatechin gallate on glassy carbon electrode

Novak, Ivana; Šeruga, Marijan; Komorsky-Lovrić, Šebojka
Square-wave and cyclic voltammetry of epicatechin gallate on glassy carbon electrode // Journal of electroanalytical chemistry, 631 (2009), 1-2; 71-75 doi:10.1016/j.jelechem.2009.03.005 (međunarodna recenzija, članak, znanstveni)

CROSBI ID: 391143 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Square-wave and cyclic voltammetry of epicatechin gallate on glassy carbon electrode

Autori
Novak, Ivana ; Šeruga, Marijan ; Komorsky-Lovrić, Šebojka

Izvornik
Journal of electroanalytical chemistry (1572-6657) 631 (2009), 1-2; 71-75

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Epicatechin gallate ; epicatechin ; gallic acid ; square-wave voltammetry

Sažetak
The mechanism of electrochemical oxidation of two catechol-type catechins, namely (-)-epicatechin (EC) and (-)-epicatechin gallate (ECG), on a glassy carbon electrode was investigated over a wide range of conditions, using cyclic and square-wave voltammetry. Electrochemical behaviour of gallic acid has been studied as well, in order to elucidate the influence of catechol and galloyl groups on the overall electrochemical response of ECG. The first oxidation peak of both catechins, ECG and EC, originates primarily from the oxidation of the catechol 3', 4'-dihydroxyl groups. The oxidation of galloyl group in the molecule of ECG constitutes only a minor component of the response, and causes the shift of the ECG peak potential (ca. 20 mV) towards more positive values when compared with the peak potential of EC. The oxidation of the catechol group is a two electron two proton reaction, which is reversible in the case of EC, but quasireversible for ECG. After successive scans, the oxidation products of EC and ECG adsorb at the electrode surface, forming a polymeric film that undergoes reversible oxidation at a lower potential than the catechol group.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Prehrambena tehnologija



POVEZANOST RADA

Projekti:
098-0982904-2907 - Elektroanalitička istraživanja mikrokristala i tragova otopljenih supstanci (Lovrić, Milivoj, MZOS ) ( CroRIS)
113-0000000-0548 - Prehrana i životne navike u očuvanju zdravlja (Mandić, Milena, MZOS ) ( CroRIS)

Ustanove:
Institut "Ruđer Bošković", Zagreb,
Prehrambeno-tehnološki fakultet, Osijek

Profili:

Avatar Url Šebojka Komorsky-Lovrić (autor)

Avatar Url Ivana Novak Jovanović (autor)

Avatar Url Marijan Šeruga (autor)

Poveznice na cjeloviti tekst rada:

doi www.sciencedirect.com doi.org

Citiraj ovu publikaciju:

Novak, Ivana; Šeruga, Marijan; Komorsky-Lovrić, Šebojka
Square-wave and cyclic voltammetry of epicatechin gallate on glassy carbon electrode // Journal of electroanalytical chemistry, 631 (2009), 1-2; 71-75 doi:10.1016/j.jelechem.2009.03.005 (međunarodna recenzija, članak, znanstveni)
Novak, I., Šeruga, M. & Komorsky-Lovrić, Š. (2009) Square-wave and cyclic voltammetry of epicatechin gallate on glassy carbon electrode. Journal of electroanalytical chemistry, 631 (1-2), 71-75 doi:10.1016/j.jelechem.2009.03.005.
@article{article, author = {Novak, Ivana and \v{S}eruga, Marijan and Komorsky-Lovri\'{c}, \v{S}ebojka}, year = {2009}, pages = {71-75}, DOI = {10.1016/j.jelechem.2009.03.005}, keywords = {Epicatechin gallate, epicatechin, gallic acid, square-wave voltammetry}, journal = {Journal of electroanalytical chemistry}, doi = {10.1016/j.jelechem.2009.03.005}, volume = {631}, number = {1-2}, issn = {1572-6657}, title = {Square-wave and cyclic voltammetry of epicatechin gallate on glassy carbon electrode}, keyword = {Epicatechin gallate, epicatechin, gallic acid, square-wave voltammetry} }
@article{article, author = {Novak, Ivana and \v{S}eruga, Marijan and Komorsky-Lovri\'{c}, \v{S}ebojka}, year = {2009}, pages = {71-75}, DOI = {10.1016/j.jelechem.2009.03.005}, keywords = {Epicatechin gallate, epicatechin, gallic acid, square-wave voltammetry}, journal = {Journal of electroanalytical chemistry}, doi = {10.1016/j.jelechem.2009.03.005}, volume = {631}, number = {1-2}, issn = {1572-6657}, title = {Square-wave and cyclic voltammetry of epicatechin gallate on glassy carbon electrode}, keyword = {Epicatechin gallate, epicatechin, gallic acid, square-wave voltammetry} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus

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  • CA Search (Chemical Abstracts)

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