Effect of Metal Salts on Antibacterial Activity of Zingiber Officinale Roscoe Extract
نویسندگان
چکیده
The antibacterial activity of ethanol extract of Zingiber officinale Roscoe (ginger) and its combination with different salts like CuSO4, ZnSO4 and MnCl2 was investigated. Both Gram positive and Gram negative bacteria were tested by agar diffusion method. The results showed that ethanol extract of Zingiber officinale gave the maximum zone of inhibition at 50mg/ml concentrations against Escherichia coli among Gram negative bacteria and against Staphylococcus aureus in Gram positive bacteria. However antibacterial activity of the ginger and metal salts combination was greater than activity of ethanol extract. These investigations indicate that though ethanol extract has antibacterial activity against Gram positive and Gram negative bacteria, ginger and metal salts complex has more inhibitory effect on microorganisms. Antibacterial activity was also compared with standard drug ampicillin.The minimum inhibitory concentration (MIC) of ginger extract and metal salts complexes against all test organisms ranged from 0.3125 to 2.5 mg/ml.
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