Phytochemical and Antimicrobial Studies of the Methanol Extract of the Root of Napoleonaea Heudelotii (a.juss)
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Abstract on Phytochemical and Antimicrobial Studies of the Methanol Extract of the Root of Napoleonaea Heudelotii (a.juss)
The extracts of the root part of Napoleonaea heudelotii were subjected to phytochemical and anti-microbial studies. Extraction was done by continuous Soxhlet extraction using methanol. The phytochemical screening of the crude methanol extract, chloroform and ethyl acetate fractions revealed the presence of carbohydrate, cardiac glycosides, saponins, steroids, triterpenes, flavonoids and tannins. The result of the antimicrobial screening of the crude methanol extract, ethyl acetate and chloroform fractions showed activity against Staphylococcus aureus, Streptococcus pyogenes, Bacillus subtilis, Escherichia coli, Salmonella typhi, Pseudomonas aeruginosa, Proteus vulgaris, and Candida albicans. However, the chloroform fraction was the most active fraction against the test microorganisms. The zone of inhibition of the methanol extract ranged between 16 mm and 21 mm, the chloroform fraction ranged between 17 mm and 25 mm while the ethyl acetate fraction ranged between 15 mm and 21 mm. The MIC results of methanol extract, ranged between 12.5 mg/ml and 1.562 mg/ml, chloroform fraction ranged between 12.5 mg/ml and 1.562 mg/ml, while ethyl acetate ranged between 6.25 mg/ml and 1.625 mg/ml. The MBC of methanol extract and chloroform fraction ranged between 12.5 mg/ml and 1.562 mg/ml, while that of ethyl acetate fraction ranged between 6.2 mg/ml and 1.562 mg/ml. The chloroform fraction being the most active fraction was subjected to extensive chromatographic purification; white crystalline solid labelled NHPE were isolated. The structures of the isolated compounds were determined to be a mixture α-amyrin and β-amyrin using 1D and 2D NMR.
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