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Analysis of catechins and caffeine in tea extracts by micellar electrokinetic chromatography
Author(s) -
Wörth Christian C. T.,
Wießler Manfred,
Schmitz Oliver J.
Publication year - 2000
Publication title -
electrophoresis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.666
H-Index - 158
eISSN - 1522-2683
pISSN - 0173-0835
DOI - 10.1002/1522-2683(200011)21:17<3634::aid-elps3634>3.0.co;2-o
Subject(s) - micellar electrokinetic chromatography , caffeine , chemistry , catechin , chromatography , green tea , black tea , electrokinetic phenomena , antioxidant , food science , polyphenol , biochemistry , biology , capillary electrophoresis , endocrinology
Cancer chemotherapy is a new and important medical science and much interest has been focused on catechins, not only for their antioxidant activity, but also because of their known antimutagenic and antitumorigenic properties. Green tea and black tea, which are among the most popular beverages consumed worldwide, contain many different catechins. We developed an analytical method capable of separating six different catechins and caffeine in tea by micellar electrokinetic chromatography in only 20min without extensive sample preparation. Furthermore, we compared the amount of catechins and caffeine in several teas and different preparation modes.