Phytochemical and Antibacterial Studies of Eastern Nigerian Mistletoe (Loranthus Micranthus) Parasitic on Pentacletra Macrophylla and Parkia Biglobosa

The comparative studies of methanol extracts of the leaves of Loranthus micranthus parasitic on Parkia biglobosa and Pentacletra macrophylla on the basis of their phytochemical and antimicrobial properties was carried out. The leaves of Loranthus micranthus parasitic on P. biglobosa and P. macrophylla were extracted with 2.5 L methanol by cold maceration at room temperature. Preliminary phytochemical screening showed that both extracts had similar phytochemical constituents namely: terpenoids, carbohydrates, reducing sugars, saponins, glycosides, steroids and resins. The antimicrobial assays of the extracts were studied on Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, Proteus vulgaris, Klebsiella pneumoniae and Salmonela typhii. The minimum inhibitory concentrations (MIC) of the extract are 14.81, 14.34 mg/mL for L. micranthus parasitic on P. macrophylla and 16.27, 19.60 mg/mL for P. biglobosa respectively against E. coli and P. vulgaris. Also, the minimum bactericidal concentrations (MBC) of the extracts are 25.87, 14.81 mg/mL and 18.78, 18.78 mg/mL for L. micranthus parasitic on P. macrophylla and P. biglobosa against E. coli and P. vulgaris.