Rapid Determination of Catechin Content in Black Tea by Fluorescence Spectroscopy

Figure 5

Fluorescence experiment of catechin in chlorophyll environment. (a) Comparison of emission peaks of chlorophyll aqueous solution at different concentrations. (b) Chlorophyll fluorescence area fitting, with increasing catechin concentration. The Pearson coefficient and the coefficient of determination of the fitted straight line in the figure are all greater than 0.99. All experimental data are averaged after three experiments.

(a)

(b)