In Vitro Antioxidant, Anti-Inflammatory, and Digestive Enzymes Inhibition Activities of Hydro-Ethanolic Leaf and Bark Extracts of Psychotria densinervia (K. Krause) Verdc

Table 4

IC₅₀ and correlation coefficient (r) of hydro-ethanolic leaf and bark extracts in BSA denaturation and antiproteinase assay compared to sodium diclofenac.

Test	Parameters	Inhibitors
		Sodium diclofenac	Bark	Leaf
BSA denaturation	IC50 (μg/ml)	207.6 ± 3.94	316.1 ± 6.02	257.0 ± 7.51^†
	R^2	0.9933	0.9741	0.9711
Antiproteinase action	IC50 (μg/ml)	322.8 ± 2.75	177.6 ± 0.50	74.37 ± 1.10^†
	R^2	0.9936	0.9997	0.9959

Data are expressed as mean ± SD; n = 3; significantly different at when compared to sodium diclofenac. ^† compared to bark extract.