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Theaflavin(TF) was extracted and purified from black broken tea.The purified TF possessed an absorption peak at the 363nm wavelength,and the solutions of TF remained stable under the conditions of pH3-6,below 80℃ within 60 minutes, as well as in 1%-4% Vc and 0. 05-0.5mmol /L Na2SO3 solutions. Fading occurred in 0. 05mol/L H2O2 solution.