Rapid Determination of Catechin Content in Black Tea by Fluorescence Spectroscopy

Figure 7

The concentration of catechin in Jiangxi black tea infusion. After removing the Raman effect, the fluorescence area fit image of the tea clear liquid increases with the concentration of catechin. The Pearson coefficient and the coefficient of determination of the fitted straight line in the figure are all greater than 0.999. All experimental data are averaged after three experiments.