Evaluation of the chemical composition of two Nigerian medicinal plants
Nigerian medicinal plants (Aspilia africana and Bryophyllum pinnatum) were analyzed for their chemical composition, vitamins and minerals. The results revealed the presence of bioactive constituents comprising alkaloids (1.24 to 1.48 mg/100 g), saponins (1.46 to 1.72 mg/100 g), flavonoids (1.46 to 1.86 mg/100 g), phenols (0.06 mg/100g) and tannins (0.04 to 0.5 mg/100g). The medicinal plants contained ascorbic acid (26.42 to 44.03 mg/100 g), riboflavin (0.20 to 0.42 mg/100 g), thiamine (0.11 to 0.18 mg/100 g), and niacin (0.02 to 0.09 mg/100 g). These herbs are good sources of minerals such as Ca, P, K, Mg, Na, Fe and Zn. The importance of these chemical constituents is discussed with respect to the role of these herbs in ethnomedicine in Nigeria.
Keywords: Aspillia africana, Bryophyllum pinnatum, bioactive compounds, ethnomedicine