Study on quality assessment of Polygalae Radix based on HPLC-DAD fingerprint Research progress on Polygalae Radix Determination of dehydroxypresenegenin in Polygalae tenuifolia by HPLC Fingerprints of genuine Radix Polygalae from Hebei Province with HPLC-UV Correlation between environmental factors and liposoluble and hydrophilic constituents of Polygalae Radix Determination of tenuifolin in Tianwang Buxinwan and Guipiwan by HPLC Isolation and structure identification of chemical constituents from Polygala hongkongensis Simultaneous analysis on index compounds and fingerprint analysis on Polygalae Radix by ultra performance liquid chromatography Quality control over different processed products of Polygalae Radix based on plant metabolomics Quality control over different processed products of Polygalae Radix based on plant metabolomics