Evaluation of antibacterial activity of selected plant species from the State of Punjab, India
Keywords:Chemical compounds, Cytomorphotypes, Extracts, Herbal, Pathogens, Zone of inhibition
Objective: Evaluation of antibacterial potential of aqueous and ethanol extracts of Solanum nigrum L., Eclipta alba (L.) Hassk., Achyranthes aspera L., Sida acuta Burm.f., Justicia adhatoda L. (Syn. Adhatoda vasica Nees), Boerhavia diffusa L. and Withania somnifera (L.) Dunal against human pathogenic bacteria Enterococcus faecalis, Escherichia coli, Pseudomonas aeruginosa and Staphylococcus aureus. Materials and Methods: Powdered form of the whole plant of each species was extracted in aqueous and ethanol solvents. The antibacterial activity experiment was performed using agar well diffusion method. A dose of 50µl, 100µl and 150µl of each extract (aqueous and ethanol) were tested. Results: Only the ethanol extracts have shown activity against test organisms. The 50µl and 100µl doses of extracts were not much effective against all the bacteria. Thus 150µl volume was selected for further study. The ethanol extract of Adhatoda vasica has yielded maximum zone of inhibition 24±1.7mm and 22±2.1mm against S. aureus and E. coli, respectively. Type AA3 of A. aspera and SN3 of S. nigrum were the most effective against E. faecalis with inhibition zones 22±2.2mm and 21±2.2mm, respectively. Similarly, B. diffusa has shown maximum inhibition against P. aeruginosa. Conclusion: The present study suggests the use of ethanol extract since none of the aqueous extracts have shown activity against all the tested bacteria. The difference in activity of different plant extracts may be due to variable chemical composition of the plant species. The plant species can be selected based on the bacterial species to be investigated. Further studies can be planned to understand the bioactive molecules responsible for antibacterial activity.
How to Cite
Copyright (c) 2022 International Journal of Ayurvedic Medicine
This work is licensed under a Creative Commons Attribution 4.0 International License.
The author hereby transfers, assigns, or conveys all copyright ownership to the International Journal of Ayurvedic Medicine (IJAM). By this transfer, the article becomes the property of the IJAM and may not be published elsewhere without written permission from the IJAM.
This transfer of copyright also implies transfer of rights for printed, electronic, microfilm, and facsimile publication. No royalty or other monetary compensation will be received for transferring the copyright of the article to the IJAM.
The IJAM, in turn, grants each author the right to republish the article in any book for which he or she is the author or editor, without paying royalties to the IJAM, subject to the express conditions that (a) the author notify IJAM in advance in writing of this republication and (b) a credit line attributes the original publication to IJAM.