Quantitative phytochemical analysis of the leaf, stem bark and root of some antimalarial plants common in South-Western Nigeria was carried out. Results obtained showed the presence of tannins, alkaloids, flavonoids, terpenoids, saponins and phenolic acids in various concentrations in the different plant parts analysed. A high composition of phytochemicals was observed in the leaves, which
... [Show full abstract] confirms their frequency of usage in traditional medicine for the treatment of malaria. Of the various plants analysed, Mangifera indica leaves and stem bark had the highest tannin (176.3±1.5 mg/kg Garlic acid equivalents) and alkaloid (7350.3±2.5 mg/kg GAE) contents, respectively. Flavonoids were significantly highest (p<0.05) in the roots of Vernonia amygdalina (5055.0±3.0 mg/kg GAE). Terpenoid content was highest in the leaves of Khaya senegalensis and Psidium guajava (164.0±1.0 mg/kg GAE). Saponin content was generally low but was significantly highest (p<0.05) in the stem bark of Tithonia diversifolia (98,260.0±5.0 mg/kg GAE) while phenolic acid content was highest in the roots of Citrus paradisi (110.0±5.0 mg/kg GAE). All the plant parts analysed contained phytochemicals in various proportions, thus, justifying their use in traditional therapy and management of malaria disease.