Figure 7:
Thin layer chromatography of white tea leaf ethyl acetate fraction. Mobile phase: Toluene: Ethyl Acetate (5 : 5). Visuals (a); observed under 254 nm ultraviolet light, the presence of black spots with Rf 0.44 and Rf 0.51 (b); observed under 365 nm ultraviolet light, the presence of reddish orange spots at Rf 0.44, Rf 0.51, and the presence of blue spots at Rf 0.77 and 0.93 (c); sprayed with AlCL3 spot sight, the spots changed to a bright blue color at Rf 0.27, Rf 0.66, Rf 0.77, and Rf 0.93 (d); used FeCl3 spot viewer, blue-black spots appear with Rf 0.44 (e); Vanillin sulfate was used to show spots, light purple spots appeared at Rf 0.27, Rf 0.4, and blue spots appeared at Rf 0.93 (f).