Posted by admin on Oct 1, 2012 in |
A simple HPTLC method was used to determine the saponin profile of Barleria cristata L. crude leaf extract. The antimicrobial activity of saponin fraction from the leaves of Barleria cristata L. was studied in-vitro against four bacterial species and four fungal species by agar disc diffusion method. Klebsiella Pneumonia, Staphylococcus aureus, E. coli, Aspergillus parasites were the most inhibited microorganism. The present study suggests that the saponin fraction possess significant antimicrobial activity and can be used to develop a potential antimicrobial...
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Posted by admin on Oct 1, 2012 in |
The aim of the study was to evaluate and compare the antimicrobial activity of crude leaf extracts of Cassia angustifolia Vahl. The leaves of Cassia angustifolia Vahl. were taken from three different regions of India such as SR-1 from South India, SR-2 from Rajasthan and SR-3 from Haryana. Antimicrobial suspectibility testing of ethanolic and aqueous leaf extracts of Cassia angustifolia Vahl. were performed against 3 bacterial strains (E. Coli, Bacillus substilis, Staphylococcus aureus) and against 2 fungal strains (Aspergillus niger, Candida albicans) by Agar well diffusion method on nutrient agar medium. The proposed comparative study revealed that the ethanolic extract prepared from the sample SR-2 taken from Rajasthan found to be most effective against all microbial strains. This is the first such comparative report on antimicrobial activity of leaf extracts of Cassia angustifolia Vahl. taken from three different regions of ...
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Posted by admin on Oct 1, 2012 in |
A complete documentation of the ethno-biological information presently existing among the diverse communities is needed at an earliest so as to restore the traditional medicinal knowledge. Research to find out scientific evidence for claims by tribal healers on Indian herbs has been intensified as being evidenced from many cited literatures. Once these local ethno medical preparations are scientifically evaluated and disseminated properly, people will be better informed regarding efficacious drug treatment and improved health status. Hence, the plant, Mimosa pudica Linn. was selected for the present study based on its medicinal use in the locality. Successive solvent extraction of the root powder of M. pudica was carried out as per the standard procedure using various solvents like, petroleum ether (40o-60oC), ethyl acetate and methanol. Preliminary phytochemical analysis, isolation of metabolites and antimicrobial activities of the extracts as well as the first time reported isolates were carried out. Preliminary phytochemical studies of vaious solvent extracts revealed presence of many biologically important secondary metabolites, such as, alkaloids, steroids, phenolic compounds, tannins,...
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Posted by admin on Sep 1, 2012 in |
Tinospora cordifolia is known for a wide range of medicinal properties. In this study, cardiovascular and antimicrobial properties of aqueous and ethanolic extracts of Tinospora cordifolia were evaluated. Dose dependent negative ionotropic and chronotropic effects were observed with both aqueous and ethanolic extracts. The effects were antagonized by atropine indicating involvement of muscarinic receptors. Maximum antimicrobial activity was found with ethanolic extract of Tinospora cordifolia (15mm) against Pseudomonas aeruginosa. The organism showed resistance to aqueous extract giving an inhibition zone of 0.3mm. The data suggest that Tinospora cordifolia could be of benefit in arrhythmias and microbial infections....
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Posted by admin on Sep 1, 2012 in |
Tridax procumbens L. is a well known medicinal plant. In the present study alkaloids from pedicle and buds of the plant were extracted and evaluated for antimicrobial activity by ‘Disc Diffusion Assay’ against selected bacteria (Escherichia coli, Staphylococcus aureus and Proteus mirabilis) and fungi (Aspergillus flavus, Aspergillus niger, Candida albicans and Trichophyton mentagrophytes). Minimum inhibitory concentration, minimum bactericidal/fungicidal concentration and total activity of each active extract were also evaluated. Significant antibacterial activity was recorded by alkaloids of pedicle against P. mirabilis (IZ 20mm, AI 0.83 and same MIC, MBC 0.039 mg/ml) and antifungal activity was recorded by buds against C. albicans (IZ 9.2mm, AI 0.92, MIC 0.625 mg/ml and MFC 1.25 mg/ml). MIC ranged from 0.039 mg/ml-0.625 mg/ml and MBC/MFC ranged from 0.039 mg/ml-1.25 mg/ml against susceptible pathogens. It is noteworthy that MIC values of active extracts was found very low (0.039 mg/ml-0.625 mg/ml) and was recorded below 1 mg/ml against inhibited pathogens, thus ascertain their strong antimicrobial potential against selected microbes. Thus, the result of the present study...
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