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