[Preparation and component analysis of tea pigments].Wei Sheng Yan Jiu 2004; 33(6):698-700WS
To prepare tea pigments.
Tea pigments are prepared by solvent extraction from Sri lanka black tea.
Tea pigments contains the components as follows: caffeine 1.77%, epigallocatechin 1.37%, catechin 1.20%, epicatechin 9.55%, epigallocatechin gallate 10.52%, epicatechin gallate 9.94%, theaflavin 10.34%, theaflavin monogallate 9.57%, theaflavin digallate 4.81%, thearubigin about 40.93%.
The best proportions of the compound that are obtained with HPLC analysis.