Posted by admin on Feb 1, 2013 in |
A simple, precise and stability-indicating HPLC method was developed and validated for the simultaneous determination of anti-diabetic drugs. The separation was achieved on ACE 3 150mm*4.6mm, 3.5µm column with gradient flow. The mobile phase at a flow rate of 1.5 mL min−1 consisted of 10mM sodium hexane sulphonate monohydrate and 10mM Potassium dihydrogen phosphate buffer with acetonitrile and methanol in gradient ratio. The UV detection was carried out at 210 nm. The method was successfully validated in accordance to ICH guidelines. Further, the validated method was applied for commercially available pharmaceutical dosage...
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Posted by admin on Feb 1, 2013 in |
The aerial roots of Ficus bengalensis Linn. were collected in and around Chennai, Tamilnadu, India They were washed, shade dried and were ground into powder. The powder was extracted with chloroform, petroleum ether, methanol and hexane. The antibacterial screening of the extracts was carried out by determining the zone of inhibition using disc diffusion method. The strains were grown to logarithmic phase in BHI broth and the inoculum was prepared by adjusting the turbidity of bacterial suspension to 0.5 McFarland’s tube. The dried extracts was dissolved in 10% Dimethyl sulphoxide (DMSO) in required concentration. The sterile discs were impregnated with 20 μl of extract. The extract discs were placed on BHI agar plates, which were previously inoculated with test strains and incubated at 37oC for 24 hours. Ampicillin disc (10μg) and 10% DMSO impregnated discs were used as positive and negative controls respectively and the zones of inhibition were recorded. The Minimum inhibitory concentration was determined by agar dilution method. The results of the present study showed that the...
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Posted by admin on Feb 1, 2013 in |
Objectives: Psoralea corylifolia L.(seeds) and Plumbago zeylanica L. (bark) were combined in the ratio of 8: 2 and named as “Swithranasini” and used for the treatment of skin diseases in ayurvedic medicine. Scientific studies validating the therapeutic properties for this indigenous medicine are lacking. This study focused on determining antimicrobial efficacy of methanol and butter milk extracts along with antioxidant efficacies of these plant parts independently and in combination. Materials and Methods: Antimicrobial activity was tested against seven pathogenic bacteria and six pathogenic fungiby measuring the zone of inhibition. In vitro antioxidant activities were assayed by 2, 2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging method and Ferric reducing antioxidant power (FRAP) method. Results: Individual extracts of the two plants showed better zone of inhibition (12- 40 mm) when applied alone but the activity was more when applied in combination (18-50 mm) against the tested pathogens. DPPH activity of methanol extracts showed higher radical scavenging activity when compared with the positive control, ascorbic acid. The IC50 values are 442.080, 457.825, 432.040 and 394.563 ug/ml for...
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Posted by admin on Feb 1, 2013 in |
A novel N-(2-Chloro-6-methylphenyl)-2-[[6-[4-(2-hydroxyethyl)-1-pipear azinyl]-2-methyl-4-pyrimidinyl] amino]-5-thiazolecarboxamide derivatives (6a-6d) and (8a-8b) were synthesized by coupling 2-[(6-chloro-2-methylpyrimidin-4ylamino]-N-(2-chloro-6-methylphenyl) thiazole-5-Carboxamide(3) with Piperazine derivatives(4,7) in butanol and DIPEA (Diisopropylethylamine) at 120ºC for 4-5hrs. All the synthesized compounds were characterized physically and elucidated by Infrared spectroscopy, Mass spectroscopy, 1H-NMR spectroscopic techniques. All the synthesized compounds were subjected to Molecular docking studies by using 2GQG as its PDB ID. Among all the compounds, 6a, 6b, 6d, 8c and 8b exhibit anticancer...
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Posted by admin on Feb 1, 2013 in |
About 6 extract (methanol, acetone, hexane, ethyl acetate, hexane-ethyl acetate, aqueous extraction) from the leaves of Mangifera indica was extracted. Hexane-ethyl acetate was characterized by Gas Chromatography- Mass Spectroscopy. Ten constituents from 10 peaks were identified. Terpinyl acetate (5.80%) and phytol isomer (5.12%) are as the major constituents and the minor constituents like oxirane (3.57%), sabinene (3.24%), beta-pinen (3.34%), beta-myrcene (3.23%) , cymene (3.68%), alpha-limonene (2.82%), eucalyptol (1,8-cineo (4.71%), 1,3-benzodioxole, 5-(2-, (3.68%) were identified. The antimicrobial activity of different extract was tested against human and plant pathogenic bacteria. Hexane-ethyl acetate extract showed significant role on inhibiting almost all tested pathogenic organisms. Using histochemical reagents such as Phloroglucinol-HCl, Dragendorff reagent was used for the localization of lignin and alkaloids respectively. Mangifera indica showed 100% larvicide activity. The addition of various concentrations of hexane-ethyl acetate extract of Mangifera indica on the L929 cell lines showed cytotoxic...
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