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. 2019 May 17;20(10):2443. doi: 10.3390/ijms20102443

Table 1.

Quantification of standard substances, ursolic acid, and oleanolic acid, in O. diffusa extracts using HPLC analysis.

Extract Concentration of Treatment Ursolic Acid Oleanolic Acid Units
Water extract 0.187 0.054 mg/g
0 0 0
20 0.00374 0.00108
Water extract 40 0.00748 0.00216 µg/mL
80 0.01496 0.00432
160 0.02992 0.00864
Methanol extract 15.905 5.365 mg/g
0 0 0
20 0.3181 0.1073
Methanol extract 40 0.6462 0.2146 µg/mL
80 1.2724 0.4292
160 2.5448 0.8584