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《Journal of Anhui Agricultural Sciences》 2010-33
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Study on the Antibacterial Effect of Various Solvent Extracts from Wild Arctium lappa L. Roots

MI Chun-xia et al(College of Life Science and Technology,Normal College of Mudanjiang,Mudanjiang,Heilongjiang 157012)  
[Objective]The aim was to study the antibacterial effect of various solvent extracts from wild Arctium lappa L.roots so as to provide theoretical basis for its development and utilization.[Method]The method of minimum inhibitory concentration(MIC) and agar-well diffusion were adopted to detect the antimicrobial activity of aqueous and 70% ethanol extracts from Arctium lappa L..[Result]Both extracts revealed the potential antimicrobial activities against Escherichia coli,Proteus vulgaris,Bacillus subtilis and Staphylococcus aureus.A higher antimicrobial activity was observed in 70% ethanol extracts in comparison with aqueous extracts,and the MIC to Bacillus subtilis and Staphylococcus aureus was 31.25 mg/ml,the MIC to Proteus vulgaris was 62.50 mg/ml,while the MIC to Escherichia coli was 250 mg/ml;however,neither aqueous extracts nor 70% ethanol extracts showed obvious antimicrobial effect on Saccharomyces erevisiae and Monilia albican.[Conclusion]The aqueous and 70% ethanol extracts from Arctium lappa L.roots had good inhibition effects on bacteria instead of yeasts,and 70% ethanol extracts had better antimicrobial effect than aqueous extracts.
【Fund】: 黑龙江省教育厅科技项目(10541236);; 牡丹江市科学技术计划项目(G20090063)
【CateGory Index】: S631.9
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