About: Electrochemical Sensing of Total Antioxidant Capacity and Polyphenol Content in Wine Samples Using Amperometry Online-Coupled with Microdialysis

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About: Electrochemical Sensing of Total Antioxidant Capacity and Polyphenol Content in Wine Samples Using Amperometry Online-Coupled with Microdialysis Goto Sponge NotDistinct Permalink

An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://pubs.acs.org/doi/abs/10.1021/jf3019886
Description	This work describes the method for total antioxidant capacity (TAC) and/or total content of phenolics (TCP) analysis in wines using microdialysis online-coupled with amperometric detection using a carbon microfiber working electrode. The system was tested on 10 selected wine samples, and the results were compared with total reactive antioxidant potential (TRAP), oxygen radical absorbance capacity (ORAC), and chemiluminescent determination of total antioxidant capacity (CL-TAC) methods using Trolox and catechin as standards. Microdialysis online-coupled with amperometric detection gives similar results to the widely used cyclic voltammetry methodology and closely correlates with ORAC and TRAP. The problem of electrode fouling is overcome by the introduction of an electrochemical cleaning step (1-2 min at the potential of 0 V vs Ag/AgCl). Such a procedure is sufficient to fully regenerate the electrode response for both red and white wine samples as well as catechin/Trolox standards. The appropriate size of microdialysis probes enables easy automation of the electrochemical TAC/TCP measurement using 96-well microtitration plates. This work describes the method for total antioxidant capacity (TAC) and/or total content of phenolics (TCP) analysis in wines using microdialysis online-coupled with amperometric detection using a carbon microfiber working electrode. The system was tested on 10 selected wine samples, and the results were compared with total reactive antioxidant potential (TRAP), oxygen radical absorbance capacity (ORAC), and chemiluminescent determination of total antioxidant capacity (CL-TAC) methods using Trolox and catechin as standards. Microdialysis online-coupled with amperometric detection gives similar results to the widely used cyclic voltammetry methodology and closely correlates with ORAC and TRAP. The problem of electrode fouling is overcome by the introduction of an electrochemical cleaning step (1-2 min at the potential of 0 V vs Ag/AgCl). Such a procedure is sufficient to fully regenerate the electrode response for both red and white wine samples as well as catechin/Trolox standards. The appropriate size of microdialysis probes enables easy automation of the electrochemical TAC/TCP measurement using 96-well microtitration plates. (en)
Title	Electrochemical Sensing of Total Antioxidant Capacity and Polyphenol Content in Wine Samples Using Amperometry Online-Coupled with Microdialysis Electrochemical Sensing of Total Antioxidant Capacity and Polyphenol Content in Wine Samples Using Amperometry Online-Coupled with Microdialysis (en)
skos:prefLabel	Electrochemical Sensing of Total Antioxidant Capacity and Polyphenol Content in Wine Samples Using Amperometry Online-Coupled with Microdialysis Electrochemical Sensing of Total Antioxidant Capacity and Polyphenol Content in Wine Samples Using Amperometry Online-Coupled with Microdialysis (en)
skos:notation	RIV/61989592:15310/12:33142961!RIV13-MSM-15310___
http://linked.open...avai/predkladatel	Přírodovědecká fakulta
http://linked.open...avai/riv/aktivita	I P S Z
http://linked.open...avai/riv/aktivity	I, P(FR-TI4/457), P(GBP303/12/G163), S, Z(AV0Z50040702)
http://linked.open...iv/cisloPeriodika	32
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Hrbáč, Jan Jakubec, Petr Halouzka, Vladimír
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Palackého v Olomouci / Přírodovědecká fakulta
http://linked.open...dnocenehoVysledku	133880
http://linked.open...ai/riv/idVysledku	RIV/61989592:15310/12:33142961
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	microdialysis; amperometry; CL-TAC; TRAP; ORAC; phenolics; antioxidant capacity; wine (en)
http://linked.open.../riv/klicoveSlovo	phenolics TRAP amperometry antioxidant capacity wine CL-TAC ORAC microdialysis
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[AACA4316D1EE]
http://linked.open...i/riv/nazevZdroje	Journal of Agricultural and Food Chemistry
http://linked.open...in/vavai/riv/obor	CG
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	11 (xsd:int)
http://linked.open...vavai/riv/projekt	Centre of drug-dietary supplements interactions and nutrigenetics Fully-automated microdialysis system with implemented electrochemistry sensor for on-line monitoring of biologically active substances
http://linked.open...UplatneniVysledku	2012
http://linked.open...v/svazekPeriodika	60
http://linked.open...iv/tvurceVysledku	Jakubec, Petr Lojek, Antonín Ulrichová, Jitka Vostálová, Jitka Hrbáč, Jan Vacek, Jan Cibiček, Norbert Bancířová, Martina Číž, Milan Denev, Petko Halouzka, Vladimír
http://linked.open...ain/vavai/riv/wos	000307487100010
http://linked.open...n/vavai/riv/zamer	Genome and epigenome: 1D and 3D Structure, Dynamics, Interactions with Proteins and Functions
issn	0021-8561
number of pages	8 (xsd:int)
http://bibframe.org/vocab/doi	10.1021/jf3019886
http://localhost/t...ganizacniJednotka	15310
is http://linked.open...avai/riv/vysledek of	Electrochemical Sensing of Total Antioxidant Capacity and Polyphenol Content in Wine Samples Using Amperometry Online-Coupled with Microdialysis

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