Antimicrobial and Phytochemical analysis of different solvent extracts of barks of Syzygium laetum (Buch.-Ham.)

The present study was carried out to evaluate the p hytochemical and antibacterial activity of methanol , ethyl acetate and acetone extracts of Syzygium laetum bark. Antib acterial activity was analysed by agar well diffusi on method against gram positive and gram negative bacteria. T he phytochemical analysis carried out revealed the presence of alkaloids, coumarins, flavanoids, phenols, saponins , terpenoids, tannins and steroids in various solve nt xtracts. Methanolic extract of S. laetum showed good antibac erial activity against Bacillus subtilis, Pseudomo nas aeruginosa and Klebsiella pneumoniaee. Acetone extr act evealed similar zone of inhibition activity ag ainst Staphylococcus aureus, Pseudomonas aeruginosa, Stre ptococcus faecalis, Klebsiella pneumoniae and Bacil lus subtilis where as ethyl acetate extract showed leas t zone of inhibition against tested all pathogens c ompared with other solvent extracts. From our results showed the presence of crucial phytoconstitients and good ant ib c erial activity and suggest that S. laetum can be used in the microbial tests.