Research Article
The Useful Medicinal Properties of the Root-Bark Extract of Alstonia boonei (Apocynaceae) May Be Connected to Antioxidant Activity
Table 1
Phytochemical constituents and yields of crude precipitate, fractions, and compounds.
| Extracts/fractions | Yield (% w/w) | Phytochemical constituents |
| Crude precipitate | 0.91a | Steroids and triterpenes | Ethylacetate fraction | 24.0b | Alkaloids, saponins, flavonoids, tannins, glycosides, and resins | Acetone fraction | 20.0b | Saponins, flavonoids, tannins, and glycosides | Methanol fraction | 50.0b | Alkaloids, saponins, flavonoids, tanins, and glycosides | Compound 1 | 13.07b | Triterpenoid | Compound 2 | 1.2b | Triterpenoid |
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aYield calculated from 350 g of powdered root-bark.
bYield calculated from 5 g of methanol extract.
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