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Preliminary study on the antibacterial activity of some medicinal plants of Khuzestan(Iran)

Asian Pacific Journal of Tropical Medicine 2010年第3期3卷 180-184页

作者： haniyeh koochak Seyyed Mansour Seyyednejad Hussein Motamedi Department of Biology Faculty of ScienceShahid Chamran University

Objective:To search for antimicrobial agents among natural ***:Ethanolic extracts of 4 plant species,including Beta vulgaris L.(Chenopodiaceae),Amaranthus graecizans (***) L.(Amaranthaceae),Rumex obtusifolius(***) *** Polygonum patulum(***) M.B.(Polygonaceae),were evaluated for antibacterial activity using agar disc diffusion method against some gram-positive and gram-negative bacteria[Pseudomonas aeruginosa(***),Listeria monocytogenes(***).Staphylococcus epidermidis(***),Staphylococcus aureus(***),Klebsiella pneumoniae(K. pneumoniae),Salmonella typhi(***),Bacillus cereus(***).Bacillus anthracis(B. anthracis),Escherichia coli(***) and Streptococcus pyogenes(***)].These extracts were obtained from aerial parts of the used ***:The majority of these extracts had inhibitory effect at different concentrations(0.05 g/mL,0.10 g/mL,0.20 g/mL and 0.40 g/mL) against above mentioned *** was the most resistant *** highest inhibitory zone was showed by ethanolic extract of *** against ***(28 mm) and followed by ethanolic extract of *** against ***(23 mm).The extract of *** didn’t show inhibitory activity except at 0.40 g/mL against *** minimum inhibitory concentration(MIC) and minimum bactericidal concentration(MBC) values of *** extract that was measured against *** were equal(MIC=MBC=5.00mg/mL).Conclusion: The findings of this study could also be as new source for antibiotics discovery and infection treatment.

关键词： Antibacterial activity Amaranthus graecizans Beta vulgaris Polygonum patulum Rumex obtusifolius Ethanolic extract

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A survey on Hibiscus rosa-sinensis,Alcea rosea *** Malva neglecta Wallr as antibacterial agents

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Asian Pacific Journal of Tropical Medicine 2010年第5期3卷 351-355页

作者： Seyyed Mansour Seyyednejad haniyeh koochak Esmaeil Darabpour Hossein Motamedi Department of Biology Faculty of ScienceShahid Chamran University

Objective:To guide for selection of plants with antibacterial activity for further phytochemical works on the isolation and identification of the active ***:Ethanolic extracts of 3 species from Malvaceae family were evaluated by agar disc diffusion method for antibacterial activity against some gram-positive and gram-negative bacteria(Pseudomonas aeruginosa,Listeria monocytogenes,Staphylococcus *** aureus, Klebsiella *** typhi,Bacillus *** anthracis,Escherichia coli and Streptococcus pyogenes).The extracts were obtained from aerial parts of Hibiscus rosa(H. rosa)-sinensis(leaf and flower),Alcea rosea(***) L.(leaf and flower) and Malva neglecta(M. neglecta) Wallr(flower).Results:These extracts had inhibitory effects at different concentrations (0.05,0.10,0.20 and 0.40 g/mL) against above mentioned *** coli was the most resistant *** highest inhibitory zone was showed by ethanolic extract of *** against Staphylococcus epidermidis(22 mm) and followed by ethanolic extract from flower of *** against Staphylococcus epidermidis and Staphylococcus aureus(20 mm).The Minimum Inhibitory Concentration(MIC) and Minimum Bactericidal Concentration(MBC) values against Staphylococcus epidermidis were equal(M1C=MBC=5 mg/mL for *** extract and for H. rosa extract MIC=MBC=20 mg/mL).Conclusions:These findings suggest that these native plants have good antibacterial properties that can be used for infection control and treatment and could also be as new source for antibiotics discovery and infection treatment.

关键词： Alcea rosea Antibacterial activity Ethanolic extract Hibiscus rosa-sinensis Malva neglecta

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