A Thick-film Sensor as a Novel Device for Determination of Polyphenols and Their Antioxidant Capacity in White Wine

被引：22

作者：

Photinon, Kanokorn ^{[1
]}

Chalermchart, Yongyuth ^{[1
]}

Khanongnuch, Chartchai ^{[1
]}

Wang, Shih-Han ^{[2
]}

Liu, Chung-Chiun ^{[3
]}

机构：

[1] Chiang Mai Univ, Fac Agro Ind, Chiang Mai 50100, Thailand

[2] I Shou Univ, Dept Chem Engn, Dashu Township 840, Kaohsiung Cty, Taiwan

[3] Case Western Reserve Univ, Dept Chem Engn, Cleveland, OH 44106 USA

来源：

SENSORS | 2010年 / 10卷 / 03期

关键词：

thick-film; polyphenols; antioxidant capacity; caffeic acid; RED WINE; PHENOLICS; NANOPARTICLES; ELECTRODES; BIOSENSOR; DISEASE; GLUCOSE; ACID;

D O I：

10.3390/s100301670

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A thick-film electrochemical sensor with an iridium-carbon working electrode was used for determining polyphenols and their antioxidant capacity in white wine. Caffeic acid was used as a model species because it has the ability to produce the highest oxidation current. The correlation coefficient of 0.9975 was obtained between sensor response and caffeic acid content. The total phenolic content (TPC) and scavenging activity on 1,1-diphenyl-2-pycrylhydrazyl (DPPH.) radical were also found to be strongly correlated with the concentration of caffeic acid, with a correlation coefficient of 0.9823 and 0.9958, respectively. The sensor prototype was proven to be a simple, efficient and cost effective device to evaluate the antioxidant capacity of substances.

引用

页码：1670 / 1678

页数：9

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