Rapid method for measuring thearubigins and theaflavins in black tea using C18 sorbent cartridges
Authors:
- 1 January 1992
- journal article
- research article
- Published by Wiley in Journal of the Science of Food and Agriculture
- Vol. 58 (1) , 149-152
Abstract
This communication describes the routine use of small inexpensive C18 cartridges for rapid separation and accurate measurement of both thearubigins (TR) and theaflavins (TF) in a liquor brewed from black tea. The slow, traditional method overestimates TR content because of interference from flavonol glycosides. Comparison is also made favourably with other methods available for estimating total TF and sometimes TR in tea.Keywords
This publication has 3 references indexed in Scilit:
- Flavonol glycosides in black teaJournal of the Science of Food and Agriculture, 1990
- Black tea thearubigins—their HPLC separation and preparation during in‐vitro oxidationJournal of the Science of Food and Agriculture, 1990
- Near-infrared reflectance prediction of quality, theaflavin content and moisture content of black teaFood Chemistry, 1988