Antibacterial activities of Ginkgo biloba L. leaf extracts

ScientificWorldJournal. 2011;11:2241-6. doi: 10.1100/2011/545421. Epub 2011 Nov 17.


The antibacterial activity of methanol, ethanol, chloroform, and hexane extracts of the leaves of Himalayan gymnospermous plant Ginkgo biloba L. was assessed against five animal and plant pathogenic strains (Agrobacterium tumefaciens, Bacillus subtilis, Escherichia coli, Erwinia chrysanthemi, and Xanthomonas phaseoli) employing disc-diffusion and broth-dilution assays. The methanol extract showed the highest activity (zone of inhibition of 15-21 mm) followed by ethanol (14-19 mm), chloroform (15-20 mm), and hexane (14-19 mm) extracts at 250 μg/mL. A minimum inhibitory concentration (MIC) of 7.8 μg/mL was found for the methanol extract against most of the pathogens tested.

Keywords: Ginkgo biloba; antibacterial; antimicrobial activity; gymnosperms.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Anti-Bacterial Agents / pharmacology*
  • Bacteria / classification
  • Bacteria / drug effects
  • Ginkgo biloba / chemistry*
  • Microbial Sensitivity Tests
  • Plant Extracts / pharmacology*
  • Plant Leaves / chemistry*


  • Anti-Bacterial Agents
  • Plant Extracts