Figure 1.

Chromatogram of (a) a mixture of standards at a wavelength of 280 nm (1—catechin, 2—caffeic acid, 3—epicatechin, 4—rutin, 5—naringin, 6—hesperidin, 7—luteolin, 8—quercetin, 9—naringenin, 10—kaempferol, 11—hesperetin); (b) extract E9 at a wavelength of 280 nm.