Abstract
The purpose of this investigation was to screen antibacterial, preliminary phytochemical and pharmacognostical potentials of pulverized leaf extracts fromIndigofera caerulea a dye yielding plant. Different aqueous (cold, boiled, autoclaved) and crude organic solvents (hexane, chloroform methanol) extracts ofI. caerulea were tested against both Gram negative (Escherichia coli, Klebsiella pneumoniae, Salmonella typhi, Vibrio parahaemolyticus, Vibrio cholera) and Gram positive (Bacillus subtilis and Streptococcus pneumonia) bacterial strains by performing cup plate method. The results highlighted most of the bacteria exhibited better antibacterial activity. Aqueous and hexane extracts exhibited good antibacterial properties in comparison to others. The results of preliminary phytochemical and pharmacological action of this taxon are discussed. This plant may be used for treatment of several diseases caused by pathogenic microbes. This study recommends future research regarding the pharmacological investigations (drug designs) of this plant. Key words: Indigofera caerulea, antibacterial tests, phytochemical and pharmacognostical analysis, water and solvent extracts.
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