Phytochemical Analysis and In Vitro Antimicrobial Activity of Costus speciosus Extracts

Authors

  • Abira Khan Department of Genetic Engineering and Biotechnology, University of Dhaka, Dhaka
  • SM Mahbubur Rashid Department of Genetic Engineering and Biotechnology, University of Dhaka, Dhaka
  • M Aftab Uddin Department of Genetic Engineering and Biotechnology, University of Dhaka, Dhaka

DOI:

https://doi.org/10.3329/bjm.v39i2.66264

Keywords:

Costus speciosus, Antimicrobial activity, Phytochemical composition

Abstract

Costus speciosus (J. Koenig) Sm., commonly known as crepe ginger, is primarily used as an ornamental plant worldwide. The aim of this research was to study the phytoconstituents of locally collected C. speciosus plant samples and test their antimicrobial effect against selected bacterial strains. Phytochemical analysis showed the presence of alkaloids, flavonoids, steroids, phenolic compounds, tannins, glycosides, and cardiac glycosides in the extracts. The extracts displayed variable degrees of antibacterial activity against the microorganisms in a bioautography experiment based on thin-layer chromatography. All the extracts showed activity against S. aureus, and none showed any activity against P. aeuroginosa. The ethanol and ethyl acetate extracts from the plant leaf and stem showed efficacy against S. typhi and B. subtilis, while the ethyl acetate extracts prevented the growth of S. pneumoniae. Only the ethanol extract from plant leaves had a negligible effect on K. pneumoniae.

Bangladesh J Microbiol, Volume 39, Number 2, December 2022, pp 46-52

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Published

2023-05-17

How to Cite

Khan, A., Rashid, S. M., & Uddin, M. A. . (2023). Phytochemical Analysis and In Vitro Antimicrobial Activity of Costus speciosus Extracts. Bangladesh Journal of Microbiology, 39(2), 46–52. https://doi.org/10.3329/bjm.v39i2.66264

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Original Articles