Table 1.

Preliminary phytochemical screening of dried leaves and stem barks of C. gigantea (CG) and P. macrocarpa (PM). +: presence of secondary metabolite; −: absence of secondary metabolites.

Secondary metabolites	Alkaloids	Saponins	Flavonoids	Steroids	Carbohydrates	Sapogenetic glycosides	Tannins (% w/w)
Plant material/part
CG leaf	+	+	+	+	+	−	1.57
CG stem bark	+	+	−	+	+	−	1.02
PM leaf	+	+	+	+	+	+	1.45
PM stem bark	+	+	−	+	+	+	1.14