RESUMO
AIM:To analyze the changes in the active components alignment of Puerariae Decoctions between its two different compatibility proportion. METHODS: Reversed phase high-performance liquid chromatography (RP-HPLC) was applied. RESULTS: When the compatibility ratio of Radix Puerariae Lobatea, Radix Scutellariae, Rhizoma Coptidis and Radix et Rhizoma Glycyrrhizae Praeparata cum melle was 5∶3∶3∶2, the contents of the eight drug active components alignment were 2.48% puerarin, 0.101% daidzin, 0.614% baicalin, 0.155% berberine, 0.048% palmatine, 0.094% jateorhizine, 0.154% glycyrrhizic acid, 0.283% liquiritin, and the proportional relationship of compatibility was 51.7∶2.1∶12.8∶3.2∶1∶2∶3.2∶5.9. When the compatibility ratio of Radix puerariae lobatae, Radix scutellariae, Radix Coptidis and Radix et Rhizoma Glycyrrhizae Praeparata cum melle was 8∶3∶3∶2, the proportion of contents of the eight active components alignment were 1.67%, 0.143%, 0.36%, 0.085%, 0.031%, 0.048%, 0.126%, 0.174%. And the proportional relationship of compatibility was 54.4∶4.7∶11.7∶2.6∶1∶1.5∶4.1∶5.7. CONCLUSION: When the compatibility percentage consists of 8∶3∶3∶2, only the puerarin content relatively increases. The active components alignment of the rest have no significant difference. This illustrates the contents of the active components alignment of puerariae decoction is related to the compatibility percentage and herb solubility.