A thick-film sensor as a novel device for determination of polyphenols and their antioxidant capacity in white wine

Kanokorn Photinon, Yongyuth Chalermchart, Chartchai Khanongnuch, Shih Han Wang, Chung Chiun Liu

研究成果: 雜誌貢獻期刊論文同行評審

25 引文 斯高帕斯(Scopus)

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.

原文???core.languages.en_GB???
頁(從 - 到)1670-1678
頁數9
期刊Sensors (Switzerland)
10
發行號3
DOIs
出版狀態已出版 - 3月 2010

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