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Antimicrobial potential of the crude extracts of an ethno botanically important plant Quisqualis indica Linn.

Research Paper | January 1, 2017

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Ariba Shah, Zaheer-Ud-Din Khan, Shanzay Saleem

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Int. J. Biosci.10( 1), 335-344, January 2017

DOI: http://dx.doi.org/10.12692/ijb/10.1.335-344


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The organic and inorganic crude extracts of different plant parts of Quisqualis indica Linn; were obtained by maceration technique in n-hexane, chloroform, ethanol and water. The phytochemical screening of the crude extracts disclosed the presence of a variety of secondary metabolites, such as alkaloids, tannins, saponins, terpenoids, flavonoids, cardiac glucosides and reducing sugars. The crude extracts were also tested for their antibacterial and antifungal activities by using agar well diffusion method against gram-positive bacteria, i.e. Escherichia coli & Pseudomonas aeruginosa, gram-negative bacteria, i.e. Bacillus subtilis & Staphylococcus aureus and fungal strains Aspergillus niger & Aspergillus oryzae. The broad spectrum of potential in the form of zone of inhibition was exhibited against bacterial and fungal strains ranging from 9±0.3mm to 53±0.1mm and ±0.3mm to 51±0.4mm respectively. The maximum zone of inhibition, i.e. 53±0.1mm was developed by the ethanol root extract against B. subtilis, while the second and third largest zones of inhibition, i.e. 51±0.4 and 46±0.5 were shown by chloroform and ethanol root extracts respectively against fungal strains.


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Antimicrobial potential of the crude extracts of an ethno botanically important plant Quisqualis indica Linn.

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