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  • Title: [Preparation and component analysis of tea pigments].
    Author: Li D, Wan X, Xia T.
    Journal: Wei Sheng Yan Jiu; 2004 Nov; 33(6):698-700. PubMed ID: 15727181.
    Abstract:
    OBJECTIVE: To prepare tea pigments. METHODS: Tea pigments are prepared by solvent extraction from Sri lanka black tea. RESULTS: 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%. CONCLUSION: The best proportions of the compound that are obtained with HPLC analysis.
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