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The compare on the antibacterial effect of bamboo leaves ethanol extracts and bamboo leaves decoction

Liang Ying (Department of Medical microbiology of Basic Medical,Xianning University,Hubei 437100,China)  
Objective To compare on the antibacterial effect of bamboo leaves ethanol extracts and bamboo leaves decoction.Methods Agar plate diffusion method was used to determine ethanol extract of bamboo leaves and bamboo leaves and decoction antibacterial effect of the minimum inhibitory concentration.Results It showed that ethanol and decoction extract were significant antibacterial effect against Staphylococcus aureus,Staph.epidermidis,Escherichia coli,Salmonella typhi,proteus vulgaris,Bacillus subtilis.the minimal inhibitory concentration of the extract for them were 6.25%,12.5%,3.13%,6.25%,12.5%,25% and 12.5%,12.5%,25%,12.5%,6.25%,50% when the concentration of extract at 100% and 50%.Conclusion The experiment indicates that the antibacterial effect of bamboo leaves ethanol extracts is closely related to the concentration,and the antibacterial effect of bamboo leaves decoction is little related to the concentration,and the antibacterial effect of extract concentration in 50% and decoction concentration in 100% are not differ much.Therefore,the decoction of bamboo leaves have secondary treatment effects for gram positive and negative bacteria.
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