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Antimicrobial Effects of Herbal Medicine Extracts on Staphylococcus aureus and Escherichia coli O157:H7  

Cai, Hua (Department of Biological Engineering and Institute of Industrial Biotechnology, Inha University)
Choi, Soo-Im (Department of Biological Engineering and Institute of Industrial Biotechnology, Inha University)
Lee, Yun-Mi (Department of Biological Engineering and Institute of Industrial Biotechnology, Inha University)
Heo, Tae-Ryeon (Department of Biological Engineering and Institute of Industrial Biotechnology, Inha University)
Publication Information
KSBB Journal / v.17, no.6, 2002 , pp. 537-542 More about this Journal
Abstract
To screening of antimicrobial activity, 95% ethanol and hot water extracts of roots, fruits, leaves, radix and stems of 50 species of traditional herbal medicines were examined. For their growth inhibitory effects on two food-born microorganisms, S. aureus and E. coli O157:H7, by the paper disc diffusion method and the minimum inhibitory concentration(MIC) test. Moutan radicis Cortex and Achyranthis Radix showed the highest inhibitory activities on both S. aureus and E. coli O157:H7. The Inhibition zones of Moutan radicis Cortex on S. aureus and E. coii O157:H7 were 22 mm and 24 mm respectively, and the corresponding inhibition zone of Achyranthis Radix were 23 mm and 22 mm. The MIC or Achyranthis Radix on S. aureus was 156.25 $\mu$g/mL, and the MIC or Achyranthis Radix and Moutan radicis Cortexas on E. coli O157:H7 were 625 $\mu$g/mL and 312.5 $\mu$g/mL, respectively. Their antimicrobial activities in ethanolic extracts were significantly higher than in hot water extracts. In the various solvent fractions prepared from ethanol extract, the ethyl acetate fraction of Achyranthis Radix and the CHCl$_3$ fraction of Moutan radicis Cortexas showed strongest activity.
Keywords
Antimicrobial activity; traditional herbal medicine; E. coli O157:H7; S. aureus;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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