Fig. 7From: Integrated assessment of medicinal rhubarb by combination of delayed luminescence and HPLC fingerprint with emphasized on bioactivities based quality controlPCA scores of wild rhubarb samples. a PCA score plots of the contents of the identified chemical compounds obtained from all batches of wild rhubarb samples. The identified compounds were almost same with the compounds tested in the HPLC analysis of commercial rhubarb samples [14]; b PCA score plots of the DL properties obtained from all batches of wild rhubarb samplesBack to article page