Posted by admin on Aug 31, 2021 in |
Plants present in the mangrove ecosystem are underexplored for their natural bioactive agents, including a neglected scope of inventing newer antimicrobials, to combat global crisis mediated by MDR microorganisms. In this study, we investigated four plants-Excoecaria agallocha, Bruguiera gymnorhiza, Avicennia alba and Aegialitis rotundifolia of the Sundarbans, world’s largest mangrove ecosystem in West Bengal, India, for their antimicrobial activities against Salmonella typhi and Candida parapsilosis, in addition to their important bioactive resources including antioxidants. Ethanolic, methanolic, and DMSO extracts of leaves of these plants were studied by antimicrobial screening, determination of total phenolic and flavonoid contents, DPPH free radical scavenging activity, ABTS [2,2’-azino-bis (3-ethylbenzothiazoline-6-sulphonic acid)] assay, ferric reducing antioxidant power (FRAP), lipid peroxidation inhibition, thin layer chromatography, and liquid chromatography-mass spectroscopy (LC-MS). E. agallocha extracts showed excellent antimicrobial activities against S. typhi, while antifungal activity against C. parapsilosis was almost lacking. MIC values of all the extracts against S. typhi was as low as 3.96 µg/mL, however, growth inhibition was most with E. agallocha extract. Again total phenolic content...
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Posted by admin on Aug 31, 2021 in |
Triazole is a diunsaturated heterocyclic compound that contains two nitrogen groups as heteroatoms. In the present study, an attempt was made to synthesize various derivatives of substituted 1, 2, 4-triazol-3-yl) benzene-1-ol and assess their antimicrobial efficiency. The synthesized compounds were subjected to physical characterization and spectral analysis by IR and NMR for structure elucidation. The compounds were then subjected to evaluation of antimicrobial activity against bacterial strains Escherichia coli (Gram -ve), Pseudomonas aeruginosa (Gram -ve), Bacillus Subtili (Gram +ve), Staphylococcus aureus (Gram +ve) method using ciprofloxacin as standard and against fungal strain Aspergillus niger method using fluconazole as standard. The results of antibacterial activity show that compounds P1 and P2 and the results of antifungal activity show that compounds P3 and P4 showed equivalent activity when compared with standard while the rest of the compounds were found to be less active than...
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Posted by admin on Aug 31, 2021 in |
A fixed-dose combination of montelukast sodium, levocetirizine dihydrochloride, and acebrophyl line is used in the treatment of asthma, COPD, allergic rhinitis and other conditions where patients feel difficulty in breathing. The present study was designed to develop and validate a simple, sensitive, precise and accurate isocratic reverse-phase high-performance liquid chromatography (HPLC) method for simultaneous estimation of montelukast sodium (MTKT), levocetrizine dihydrochloride (LTZ) and acebrophyl line (ABP) in fixed-dose combination tablets. Chromatographic separation of these drugs was achieved on Hypersil ODS C18 column (250 × 4.6 mm, 5µm) as stationary phase. A mixture of methanol, acetonitrile and 20 mM ammonium acetate buffer in the ratio of 60:30: 10v/v was used as the mobile phase at a flow rate of 0.8 ml/min with detection at 232 nm at a column temperature set at 35 ℃. The total elution time for the three drugs was about 10 min. The developed method was validated by conducting system suitability, selectivity, linearity, precision, accuracy, limits of detection, and limits of quantification as per ICH guidelines....
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Posted by admin on Aug 31, 2021 in |
The comparative study designed to evaluate the anthelmintic potential of the methanolic extracts of Hibiscus rosa-sinesis (L) and Azadirachta indica (L) leaves against helminth: Haemonchus spp., an abomasal parasite For this study various concentrations (1, 2.5, 5.0, 10.0 mg/ml) of both the extracts were screened. 1 mg/ml concentration of Albendazole (ABZ) was used as a positive control (reference) and Phosphate Buffer Saline (PBS) alone was used as a negative control. The results were represented with respect to time (min) taken to get paralyze followed by the death of the treated parasite in all the tested concentrations. The results of the study disclosed the anthelmintic efficacy, of both the plants when compared with the positive control (reference). The results also established that Hibiscus rosa-sinesis (L) leaves show more effective anthelmintic potential as compared with Azadirachta indica (L)...
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Posted by admin on Aug 31, 2021 in |
To study the anti-oxidant and anti-diabetic activities of isolated compound beta-sitosterol from the ethanolic extract of stem of Andrographis echioides under the in-vitro model. The isolation was done using column chromatography using gradient elution with different mobile phases. Structural elucidation was carried out on the basis of spectral analysis. Anti-oxidant activity was determined by 2,2-diphenyl-1-picrylhydrazyl scavenging assay. The anti-diabetic activity was evaluated by the inhibitory potential of isolated compound beta-sitosterol against alpha-amylase and alpha-glucosidase assays. The study revealed that the beta-sitosterol exhibited significant α-amylase (58.57±0.29) and α-glucosidase (43.85±0.032) inhibitory activities respectively and well compared with standard acarbose drug. The beta-sitosterol showed the best scavenging activity (74.46±0.036) against the tested radicals like 1,1-diphenyl-2-picrylhydrazyl, The infra-red spectrum specific absorption bands for beta-sitosterol viz: 3427.78 cm‐1 (O‐H stretching.); 2937.40 cm‐1 (aliphatic C‐Hstretching); 1640.58 cm‐1 (C=C absorption peak); other absorption peaks includes 1464.31cm‐1 (CH2); 1381.56 cm‐1 (OH def), 1054.11 cm‐1 (cycloalkane) and 800.97 cm‐1. Structural elucidation of beta-sitosterol was done by spectrum analysis such as 13C and 1H depth nuclear magnetic resources. Therefore,...
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