Antibacterial efficacy of stem bark extracts of Mangifera indica against some bacteria associated with respiratory tract infections

摘要: Phytochemical screening of the crude stem bark extracts of Mangifera indicarevealed presence alkaloids, phenols, tannins, saponins and cardiac glycosides. The antibacterial activity were assayed using agar well diffusion methods on clinical bacterial isolates of Escherichia coli,Staphylococcus aureus, Pseudomonas aeruginosa, Klebsiella pneumonia andStreptococcus pneumonia obtained from patients previously diagnosed with respiratory tract infections. At a concentration 50 mg/ml, inhibited growth all pathogens, though varying degrees susceptibility depending bacterium extracting solvent. MIC values ranged 12.5 - 200 while MBC 400 mg/ml this is very important for people who depend plant their health care needs. bioactive compounds has been linked to antimicrobial extracts. drug was more under acidic conditions at elevated temperatures. results obtained in study support use herbal medicine. the M. indica tree can be used as source broad spectrum oral antibiotic fight pathogens.   Key words: Phytochemical screening, Mangifera indica, bioactive, medicine, tract, pathogens.