Antimicrobial activity of ethanolic extract of Usnea longissima

  • Thippeswamy B Dept. of P.G. Studies and Research in Microbiology, Kuvempu University, Shankaraghatta-577 451, Shivamogga (Dist.), Karnataka, India
  • K J Naveenkumar Dept. of P.G. Studies and Research in Microbiology, Kuvempu University, Shankaraghatta-577 451, Shivamogga (Dist.), Karnataka, India
  • J Guruprasad Bodharthi Dept. of P.G. Studies and Research in Microbiology, Kuvempu University, Shankaraghatta-577 451, Shivamogga (Dist.), Karnataka, India
  • S R Shivaprasad Dept. of P.G. Studies and Research in Biochemistry, Kuvempu University, Shankaraghatta-577 451, Shivamogga (Dist.), Karnataka, India

Abstract

Introduction: Usnea Longissima is an epiphyte species of lichen belongs to the family Parmeliaceae. Lichenic acids isolated from Usnea Longissima are growth inhibitors. Usnea Longissima was used a dermatological aid for during wounds in the pecific North West. Methods: The ethanol extract of Usnea Longissima were screened for potential antibacterial activity and antifungal activity using Agar well diffusion method against six infectious strains and two dermatophytic fungi Trichoderma viride and Candida albicans. Results: Ethanol extract of Usnea Longissima exhibited significant antibacterial activity and antifungal activity with 1mg/ml Agar well diffusion method against the Gram positive Staphylococcus aureus (26 ± 0.5), and Gram negative Pseudomonas aeruginosa (18 ± 0.5), Klebsiella pneumoniae (21 ± 0.5), Shigella dysenteriae (10 ± 0.3), Salmonella typhi (14 ± 0.5), Escherichia coli (-) and two dermatophytic fungi Trichoderma viride (14 ± 0.5) and Candida albicans (11 ± 0.5). Conclusion The present study is justified the traditional use and the effect of ethanol extract of lichen Usnea longissima was screened their level of antimicrobial potential. 

Keywords: Usnea longissima, Lichen, Antimicrobial activity, Ethanol

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Author Biographies

Thippeswamy B, Dept. of P.G. Studies and Research in Microbiology, Kuvempu University, Shankaraghatta-577 451, Shivamogga (Dist.), Karnataka, India
Dept. of P.G. Studies and Research in Microbiology, Kuvempu University, Shankaraghatta-577 451, Shivamogga (Dist.), Karnataka, India
K J Naveenkumar, Dept. of P.G. Studies and Research in Microbiology, Kuvempu University, Shankaraghatta-577 451, Shivamogga (Dist.), Karnataka, India
Dept. of P.G. Studies and Research in Microbiology, Kuvempu University, Shankaraghatta-577 451, Shivamogga (Dist.), Karnataka, India
J Guruprasad Bodharthi, Dept. of P.G. Studies and Research in Microbiology, Kuvempu University, Shankaraghatta-577 451, Shivamogga (Dist.), Karnataka, India
Dept. of P.G. Studies and Research in Microbiology, Kuvempu University, Shankaraghatta-577 451, Shivamogga (Dist.), Karnataka, India
S R Shivaprasad, Dept. of P.G. Studies and Research in Biochemistry, Kuvempu University, Shankaraghatta-577 451, Shivamogga (Dist.), Karnataka, India
Dept. of P.G. Studies and Research in Biochemistry, Kuvempu University, Shankaraghatta-577 451, Shivamogga (Dist.), Karnataka, India  
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How to Cite
B, T., K. Naveenkumar, J. Bodharthi, and S. Shivaprasad. “Antimicrobial Activity of Ethanolic Extract of Usnea Longissima”. Journal of Experimental Sciences, Vol. 2, no. 12, Feb. 2012, http://updatepublishing.com/journal/index.php/jes/article/view/1898.
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