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Antimicrobial potential of Viola canescens Wall

By: Imtiaz Ahmad, Barkatullah

Key Words: Viola canescens, Escherichia coli, Staphylococcus aureus, Clavicep purpurea, Penicillium italicum.

Int. J. Biosci. 11(6), 208-217, December 2017.

DOI: http://dx.doi.org/10.12692/ijb/11.6.208-217

Certification: ijb 2017 0176 [Generate Certificate]

Abstract

Viola canescens Wall. is an important ethnomedicinal plant, widely used in traditional system of medicines for treating various ailments. The present study was therefore conducted to evaluate the antibacterial and antifungal activity of this ethnomedicinally important plant.The antibacterial and antifungal potentials of V. canescens was investigated through methanolic extract of the whole plant (CME) and its various organic solvent fractions i.e. ethyl acetate fraction (EAF), Chloroform fraction (ChF), uncharacterized crystalline compound obtained from ethyl acetate fraction (UCC), n-hexane fraction (NHF), total phenol content (CTP) and total flavonoid content (CTF) using various plant and human/animal pathogens. The antibacterial potential of the using agar well diffusion assay while the antifungal activity was determined using disc diffusion assay.In antibacterial assay except the NHF, CTP, and CTF all the other extract/fractions exhibited significant activities against most of the test bacteria. EAF was the most effective fraction in comparison with the other. The highest activity of EAF was recorded against X. campestris, followed by E. coli, P. vulgaris, P. auriginosa, A. tumefecian, S. aureus, B. subtilisand S. pneumoniae with LD50 values equal to 6.28, 9.07, 13,26, 15.64, 16.28, 16.89, 20.57 and 20.99 respectively. In antifungal assay, all the extract/fractions exhibited significant activity against most of the tested fungal strains.In antibacterial assay, the CME was found more effective against the test fungi. CME showed maximum activity against A. niger (LD50 = 7.87). Least activity of CME was observed against C. purpurea (LD50 = 58.77) and R. stolonifera (LD50 = 154.83).

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Antimicrobial potential of Viola canescens Wall

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Imtiaz Ahmad, Barkatullah.
Antimicrobial potential of Viola canescens Wall.
Int. J. Biosci. 11(6), 208-217, December 2017.
https://innspub.net/ijb/antimicrobial-potential-viola-canescens-wall/
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