Next Article in Journal / Special Issue
Wine Phenolic Compounds: Antimicrobial Properties against Yeasts, Lactic Acid and Acetic Acid Bacteria
Previous Article in Journal
Antioxidant Activity of Commercial Soluble Coffees
Previous Article in Special Issue
Optimization of the Juice Extraction Process and Investigation on Must Fermentation of Overripe Giant Horn Plantains
Open AccessArticle

Electrochemistry of White Wine Polyphenols Using PEDOT Modified Electrodes

1
School of Chemical Sciences, The University of Auckland, Private Bag 92019, Auckland, New Zealand
2
ILK Dresden gGmbH, Bertolt-Brecht-Allee 20, 01309 Dresden, Germany
*
Author to whom correspondence should be addressed.
Academic Editor: António Manuel Jordão
Beverages 2017, 3(3), 28; https://doi.org/10.3390/beverages3030028
Received: 1 June 2017 / Revised: 21 June 2017 / Accepted: 21 June 2017 / Published: 28 June 2017
(This article belongs to the Special Issue Phenolic Compounds in Fruit Beverages)
The conducting polymer PEDOT (poly-3,4-ethylenedioxythiophene) has been polymerized onto 3 mm and 10 µm electrodes from a propylene carbonate solution. The electrodes have then been tested in a Chardonnay wine, including dilutions in a model wine solution, with comparisons made to scans with a glassy carbon electrode. A well-defined oxidation peak was obtained for the white wine at PEDOT in the 400 to 450 mV (Ag/AgCl) range, where peaks were also obtained for the representative phenolics caffeic acid and catechin. The voltammetry at PEDOT was typical of a surface-confined process. Significant preconcentration, leading to an increased current response, was noted over a period of 20 min of holding time. Extensive PEDOT growth was observed in the microelectrode case, leading to current densities for the oxidation of caffeic acid over 1000 times greater than those observed at the macroelectrode, matching the high surface area and fractal-type growth observed in SEM images. View Full-Text
Keywords: polyphenols; wine; cyclic voltammetry; PEDOT polyphenols; wine; cyclic voltammetry; PEDOT
Show Figures

Figure 1

MDPI and ACS Style

Zhang, Q.; Türke, A.; Kilmartin, P. Electrochemistry of White Wine Polyphenols Using PEDOT Modified Electrodes. Beverages 2017, 3, 28. https://doi.org/10.3390/beverages3030028

AMA Style

Zhang Q, Türke A, Kilmartin P. Electrochemistry of White Wine Polyphenols Using PEDOT Modified Electrodes. Beverages. 2017; 3(3):28. https://doi.org/10.3390/beverages3030028

Chicago/Turabian Style

Zhang, Qiang; Türke, Alexander; Kilmartin, Paul. 2017. "Electrochemistry of White Wine Polyphenols Using PEDOT Modified Electrodes" Beverages 3, no. 3: 28. https://doi.org/10.3390/beverages3030028

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop