Quality Assessment of Ojeok-San, a Traditional Herbal Formula, Using High-Performance Liquid Chromatography Combined with Chemometric Analysis

Figure 2

Chromatograms of (a) the standard marker compounds and (b) OJS samples at a detection wavelength of UV 254 nm. (1) Gallic acid, (2) protocatechuic acid, (3) chlorogenic acid, (4) albiflorin, (5) paeoniflorin, (6) ferulic acid, (7) liquiritin, (8) benzoic acid, (9) nodakenin, (10) hesperidin, (11) naringin, (12) neohesperidin, (13) ononin, (14) oxypeucedanin hydrate, (15) cinnamic acid, (16) byakangelicin, (17) cinnamaldehyde, (18) benzoylpaeoniflorin, and (19) glycyrrhizin. OJS01, Ojeok-san water extract from the laboratory; OJS02–OJS10, Ojeok-san granules from Korean manufacturers.

(a)

(b)