Quality Assessment of Different Species and Differently Prepared Slices of Zedoray Rhizome by High-Performance Liquid Chromatography and Colorimeter with the Aid of Chemometrics

Figure 1

The structure of the standard substances. (a) Curcumenol. (b) Curzerene. (c) Curdione. (d) Isourecumenol. (e) Furanodienon. (f) Curcumol. (g) Germacrone. (h) Furanodiene. (i) β-elemene. (j) Bisdemethoxycurcumin. (k) Demethoxycurcumin. (l) Curcumin.

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