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Objective: To investigate the scientific bases for the traditional use of Stachytarpheta angustifolia. Methods: In vitro antibacterial activity of the aqueous and ethanol extract of the plant was investigated using the agar cup plate diffusion method. Results: The ethanol extract of the plant showed antibacterial activity against Escherichia coli, Streptococcus faecalis, Shigella dysente-riae, Staphylococcus aureus ( S. aureus), Salmonella sp., Pseudomonas aeruginosa and Neisseria gonorthoeae, while the water extract was active against Escherichia coli, Streptococcus faecalis, Shigella dysenteriae, Staphylococcus aureus and Pseudomonas aeruginosa. The ethanol extract exhibited higher antibacterial activity than the water extract. The minimum inhibitory comcentration(MIC)and minimum bactericidal concentration(MBC)of the ethanol extract were 0. 65 g/L and 0. 85 g/L, respectively, against S. aureus. Treatment of the extract at higher temperature, 60℃ increased the sensitivity of the test of ganisms to the
Results: The ethanol extract of the plant showed antibacterial. Activity against Escherichia coli, Streptococcus faecalis, Shigella dysente-riae, Staphylococcus aureus (S. aureus), Salmonella sp., Pseudomonas aeruginosa and Neisseria gonorthoeae, while the water extract was active against Escherichia coli, Streptococcus faecalis, Shigella dysenteriae, Staphylococcus aureus and The minimum inhibitory comcentration (MIC) and minimum bactericidal concentration (MBC) of the ethanol extract were 0. 65 g/L and 0. 85 g/L, respectively, Against S. aureus. Treatment of the extract at higher temperature, 60°C increased the sensitivity of the tes t of ganisms to the