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Spectrophotometric Determination of Polyphenols in Green Teas with 18-Molybdodiphosphate

Mohammed Al-Shwaiyat, Tatyana Denisenko, Yuliia Miekh, Andriy Vishnikin
Affiliation: 
1 Al-Balqa Applied University, Al-Salt 19117, Jordan 2 Oles Honchar Dnipro National University, 72, Gagarin Ave., 49010 Dnipro, Ukraine vishnikin@hotmail.com
DOI: 
https://doi.org/10.23939/chcht12.02.135
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Keywords:

Abstract: 
The reactivity of 18-molybdodiphosphate heteropoly complex (18-MPC) with respect to the polyphenolic compounds contained in green teas was estimated. The one- and two-electron heteropoly blues coexist depending on the ratio of reducing agent to 18-MPC in such reactions. The results for the determination of total content of polyphenols in green teas of different brands obtained with 18-MPC and Folin-Ciocalteu reagent are close to each other. The disadvantages of the existing methods are shown.
References: 

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