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Updated: Aug 18, 2026

Tea Aroma Analysis Based on Solvent-Assisted Flavor Evaporation Enrichment
Published on: May 26, 2023
[Studies on antioxidant constituents from black tea]
Yalun Su1, Ruoyun Chen, Zhenyu Chen
1Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050.
Abstract:
Qimen black tea has strong inhibitory activity of canola oil oxidation. Four antioxidant compounds, theaflavin (TF1), theaflavin-3-gallate (TF2A), theaflavin-3'-gallate (TF2B) and theaflavin digallate (TF3), were isolated from acetic acetate extract of black tea by silica gel and sephadex LH-20 column chromatography. TF1, TF2A, TF2B and TF3, have stronger antioxidant activity than that of BHT (Butylated hydorxytoluene).
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