Summary of in vitro studies of antioxidant potential of C. procera.

C. procera part	Extract/dose/duration	Investigation	Result	References
Leaves, fruits, flowers and latex	Methanolic solution of dried extract	DPPH radical scavenging assay	Leaves exhibited maximum DPPH radical scavenging activity with IC50 = 0.18 mg mL−1, whereas latex showed minimum activity with IC50 = 0.42 mg mL−1	101
Leaves	Aqueous and methanolic extract (1, 5, 10, 50, 100 and 500 μg mL−1)	DPPH radical scavenging assay	IC50 of the methanol extract was 110.25 μg mL−1, the aqueous extract showed mild antioxidant activity	102
Leaves	2–100 mg mL−1 for quercetin in methanol and 20–100 mg mL−1 for AME and quercetin derivatives with different methoxy substitution	DPPH radical scavenging assay	Varying degrees of antioxidant activity was exerted by quercetin derivatives, but quercetin was found to be most active	76
Leaves, flowers and fruits	Methanolic extracts of the samples of different concentrations (100–1000 ppm)	DPPH radical scavenging assay	IC50 values in leaves, fruits and flowers were 16.08, 16.06 and 10.31 μg mL−1 respectively, showing strong antioxidant activity of C. procera	103