Posted by admin on Apr 1, 2012 in |
An ethnomedicinal plant, Hugonia mystax L., was examined for preliminary phytochemical screening and antimicrobial activity. Preliminary phytochemical screening showed the presence of various classes of secondary metabolites such as flavonoids, phenols, saponins, steroids, tannins and terpenoids. Antimicrobial activity of petroleum ether, chloroform, ethanolic and aqueous fruits extracts showed significant activity against the human pathogens such as Streptococcus pneumoniae causing brain abscesses, pneumonia and septic arthritis; Proteus vulgaris, Pseudomonas aeruginosa causing urinary tract infections and septicaemia; Salmonella typhi causing typhoid fever, Vibrio species causing diarrheal infections and the fungus Candida albicans causes urinary tract infections. The antimicrobial activity of the petroleum ether, chloroform, ethanolic and aqueous fruits extracts showed concentration-dependent activity against all the tested bacteria at various concentrations. Thus, the present findings revealed the medicinal potential of H. mystax to develop a drug against various human...
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Posted by admin on Apr 1, 2012 in |
Trikatu churna is one of the traditional poly herbal preparation, formed by mixing equal quantities of three important spicy materials such as Piper longum L. (Piperaceae), Piper nigrum L. (Piperaceae)and Zingiber officinale Roscoe (Zingiberaceae). Trikatu is also known as “ Three Bitters”. The trikatu preparation was reported to contain alkaloids, phenols, tannins, flavanoids, steroids, lignin & saponins. The objective of study is to evaluate the antimicrobial activity of trikatu churna & its individual ingredients with their preliminary phytochemical study. The aqueous extracts of trikatu churna & its each ingredient were tested for antimicrobial activity against certain bacterial strains of Escherichia coli, Staphylococcus aureus by in vitro agar well diffusion method and the results are recorded as the zone of inhibition. Trikatu churna was found to possess higher extent of phytoconstituents with promising antimicrobial...
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Posted by admin on Mar 1, 2012 in |
In the present investigation, 4-chloro acetophenone on condensation with 2-nitro benzaldehydes in methanolic NaOH solution yielded the corresponding chalcone. These chalcone were further reacted with Isonicotyl hydrazide and semicarbazide in ethanol which led to the formation of chalcone Isonicotyl hydrazone and chalcone semicarbazone derivatives respectively. The newly synthesized derivatives and there copper complexes were characterized on the basis of their chemical properties and spectroscopic data such as IR, NMR and UV. All newly synthesized compounds were evaluated for their antibacterial activities against E. coli and S. aureus also for antifungal activities against P....
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Posted by admin on Feb 1, 2012 in |
The antibacterial activity of methanol extract of Abutilon indicum, Hygrophila spinosa and Mimosa pudica were studied by agar well diffusion method in vitro. The effect of antibacterial potential was examined against Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, Bacillus cereus, Proteus vulgaris, Enterococcus faecalis, Klebsiella pneumoniae, Vibrio cholerae, Salmonella typhi and Salmonella paratyphi. The methanol extract of these medicinal plants have showed consistently significant inhibitory activity on different bacterial pathogens tested. Furthermore, the Minimum Inhibitory Concentration (MIC) studies carried out by broth dilution assay and found the MIC ranged between 0.2 to 0.9mg/ml. Overall the methanol extracts was found to be more effective. The results of the extracts were compared with the standard antibiotics...
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Posted by admin on Feb 1, 2012 in |
Purpose: The present study was designed to evaluate the phytochemical, biochemical and antimicrobial activity of leaf extracts of Boerhavia erecta and Chromolaena odorata. Methods: The leaves of Boerhavia erecta and Chromolaena odorata were washed with tap water followed by distilled water. The cleaned leaves were shade dried and then made to fine powder by using homogenizer. About 1.0 gram of clean dried leaf was taken along with 10 ml ethanol and mashed well in a homogenizer and filtered, then used for biochemical,phytochemical analysis and antimicrobial activity by using various standard methods. Results and Conclusions: Since, these plants possess many medicinal properties and the results showed that both the plant extracts possessed significant levels of minerals and vitamins. The presence of biochemical constituents and positive antimicrobial activity expertise its medicinal property. Natural products perform various functions, and many of them have interesting and useful biological activities. Boerhavia erecta and Chromolaena odorata are plants which are extensively used in folk medicine....
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