The possibility of electrochemistry-cyclic voltammetry (CV) method applied on the fast measurement of green tea polyphenols content was investigated. Three kinds of working electrodes, silver electrode, carbon paste electrode and glassy carbon electrode, were designed and self-made for that purpose. The results showed that the silver electrode was not suitable for the content determination. A linear relationship between the anodic current and the polyphenols concentration was obtained using the carbon paste electrode or the glassy carbon electrode. Test results of green tea samples indicated that the repeatability and accuracy of the glassy carbon electrode were better than the carbon paste electrode. Compared with the national standard method, the electrochemistry method costs much less time. This research confirmed the feasibility of this method and gave a new idea to develop a fast, simple and low-cost way to detect polyphenols in tea.
ZHU Dan
,
XU Hai-rong
,
Martial Geiser
,
Mario Bernabei
,
Wilfried Andlauer
. Research on Fast Measurement of Green Tea Polyphenols Content Based on the Electrochemistry Method[J]. Journal of Tea Science, 2011
, 31(3)
: 179
-186
.
DOI: 10.13305/j.cnki.jts.2011.03.004
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