Coulometric determination of the antioxidant capacity of tea extracts using electrogenerated bromine

Authors
Abdullin, IF Turova, EN Budnikov, GK
Citation
If. Abdullin et al., Coulometric determination of the antioxidant capacity of tea extracts using electrogenerated bromine, J ANALYT CH, 56(6), 2001, pp. 557-559
Citations number
15
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
JOURNAL OF ANALYTICAL CHEMISTRY
ISSN journal
10619348 → ACNP
Volume
56
Issue
6
Year of publication
2001
Pages
557 - 559
Database
ISI
SICI code
1061-9348(200106)56:6<557:CDOTAC>2.0.ZU;2-G
Abstract
A coulometric procedure based on the reaction between aqueous extracts of t ea with electrogenerated bromine compounds was proposed for the rapid estim ation of the antioxidant capacity of different kinds of tea. The antioxidan t properties of tea with respect to bromine are mainly due to naturally occ urring flavonoids, tannins, and some vitamins. Photometric and coulometric data for black teas exhibit good correlation.