Research Article
Adeyanju Olusola, Olajide Olut
Abstract
The phytochemical analysis, elemental analysis, antimicrobial activities and the minimum inhibitory concentration (MIC) of aqueous and ethanolic extracts of the leaves of Cassia arerehDel. were carried out. Phytochemical investigation revealed the presence of several bioactive compounds such as alkaloids, flavonoids, anthraquinones, saponins, glycosides, tannins, carbohydrates and terpenes. Elemental analysis revealed the presence of calcium (Ca), phosphorus (P), Manganese (Mg), Manganese (Mn), Iron (Fe), Copper (Cu) and Zinc (Zn).Manganese was present at a higher concentration (11.50 µg/g) followed by Zinc (3.35 µg/g). Antimicrobial studies showed that the ethanolic extract had considerable inhibitory activity against Staphylococcus aureus, Streptococcus pyogen, Salmonella typhi, Shigella dysenteryand Eschenchia coli. Ethanolic extract had higher zone of inhibition (32 mm) againstsalmonella typhi at (0.5 µg/ml) with minimum inhibitory concentration (MIC) value of 8 x 102µg/ml. The MIC ranges from 4 x 102 µg/ml to 5 x 104 µg/ml for other bacteria.