• 文献标题:   Electroanalytical Behavior of Gallic and Ellagic Acid Using Graphene Modified Screen-Printed Electrodes. Method for the Determination of Total Low Oxidation Potential Phenolic Compounds Content in Cork Boiling Waters
  • 文献类型:   Article, Proceedings Paper
  • 作  者:   GUIBERTEAUCABANILLAS A, GODOYCANCHO B, BERNALTE E, TENAVILLARES M, CABANILLAS CG, MARTINEZCANAS MA
  • 作者关键词:   gallic acid, ellagic acid, screenprinted electrode, phenolic compound, cork boiling water
  • 出版物名称:   ELECTROANALYSIS
  • ISSN:   1040-0397 EI 1521-4109
  • 通讯作者地址:   Univ Extremadura
  • 被引频次:   7
  • DOI:   10.1002/elan.201400418
  • 出版年:   2015

▎ 摘  要

New electroanalytical methods have been proposed for the estimation of the total content of phenolic compounds of low oxidation potential in cork boiling water, expressed as gallic acid equivalent/g dry cork, by using screen-printed electrode modified with graphene. The results obtained have been compared with spectrophotometric method (Folin-Ciocalteau) and a good correlation has been found between them. The detection limits obtained by Winefordner-Long and Clayton methods were 0.04 and 0.06 ppm for ellagic acid (EA), and 0.05 and 0.09 ppm for gallic acid (GA), respectively. The sensitivity, simplicity, selectivity, fast and low cost of the developed methodologies is also demonstrated.