Evaluation of Two Parts of Lithocarpus polystachyus Rehd. from Different Chinese Areas by Multicomponent Content Determination and Pattern Recognition

Figure 2

Structures of six chemicals and HPLC chromatograms of two parts of LP. (a) Structure of six chemicals. (1) Catechin, (2) isoquercetin, (3) astragalin, (4) phloridzin, (5) trilobatin, and (6) phloretin. (b) The HPLC chromatogram of six chemicals and LP samples. (A) The HPLC chromatogram of six chemicals. (B) The HPLC chromatogram of tender leaves of S1. (C) The HPLC chromatogram of flower spikes of S1. Peak identification: (1) catechin, (2) isoquercetin, (3) astragalin, (4) phloridzin, (5) trilobatin, and (6) phloretin.

(a)

(b)