Evaluation of Nitrite Radical Scavenging Properties of Selected Zimbabwean Plant Extracts and Their Phytoconstituents

Table 1

Nitrite radical scavenging activity of gallic acid and Combretum zeyheri, Combretum platypetalum, and Parinari curatellifolia extracts.

Plant	Ethanol extracts μg/mL	Water extracts; μg/mL	Nitric oxide; scavenged %
C. zeyheri	188	198	72.5
C. platypetalum	158	97.5	77.5
P. curatellifolia	103	92.5	70
Gallic acid	87.5	173	53.5