Optimization of a CUPRAC-Based HPLC Postcolumn Assay and Its Applications for Ginkgo biloba L. Extracts

Figure 1

Combined chromatograms of chromatographic elution of a mixture of flavonoid standards (a), Ginkgo biloba L. leaf extract (b), and postcolumn reaction with CUPRAC with Ginkgo biloba L. leaf extract (c). For exact compound refer to Table 2.

(a)

(b)

(c)