Posted by admin on Jan 31, 2021 in |
In the present investigation, a series of some novel 4-[substituted-2-hydroxy-phenyl]-2-(4′-dimethylamino-phenyl)-2, 3-dihydro-1, 5-benzothizepines (2a-l) have been synthesized by the treatment of 1-(substituted-2-hydroxy-phenyl)-3-(4′-dimethylamino-phenyl)-prop-2-en-1-ones (chalcones) (1a-l) with 2-aminothiophenol using ethanol as a solvent in the presence of catalytic amount of Lanthanum Nitrate in short reaction time with excellent yield (70-80%) by a conventional method. The products were tested for purity by TLC, and structures of newly synthesized compounds were confirmed by IR, 1H NMR, and Mass spectral analysis. All these newly synthesized compounds were evaluated for their antibacterial activity against Escherichia coli, Salmonella typhi, Staphylococcus aureus, and Bacillus subtilis and antifungal activity against Aspergillus niger, Penicillium chrysogenum, Fusarium moneliforme, and Aspergillus flavus, using Penicillin and Greseofulvin as standard drugs. Most of the compounds showed significant...
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Posted by admin on Jan 31, 2021 in |
Kanuga (Pongamia pinnata), a plant belonging to Leguminosae described in Vedas has ethnobotanical importance and a variety of medicinal properties. Pongamia pinnata, commonly grown on the roads of India is used to heal wounds, treat many fungal infections, skin diseases and to clean teeth. The objective of the current study is to perform phytochemical analysis and appraise the antimicrobial activity of hydro-alcoholic bark extract of Pongamia pinnata. Dried, powdered bark was extracted with water and ethanol (1:1) mixture by soxhlation for 72 h. Following the standard tests of phytochemical investigation, the hydro-alcoholic bark extract subsumes constituents like flavonoids, phenolic compounds, carbohydrates, saponins, glycosides, and alkaloids. Minimum Inhibitory Concentration (MIC) of the hydro-alcoholic bark extract was evaluated by serial tube dilution method, and MIC for Bacillus subtilis, Escherichia coli, and Aspergillus niger was 100 µg/ml, 100 µg/ml, and 100 µg/ml, respectively. The antimicrobial activity of hydro-alcoholic bark extract of Pongamia was assessed by agar well diffusion method. Organisms used for antimicrobial assessment include Bacillus subtilis, Escherichia coli, and Aspergillus niger....
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Posted by admin on Jan 31, 2021 in |
The study was performed with Methanolic Periwinkle leaf extract and aqueous Amla fruit extract. The activity was tested on Staphylococcus aureus and Escherichia coli by Agar Well Diffusion Method. Further, Silver Nanoparticles were synthesized from these Plant extract by Biological Method. Periwinkle leaf and Amla fruit extract showed antimicrobial activity against E. coli and S. aureus and also showed the synthesis of Silver Nanoparticles. The Biosynthesized SNPs were measured on a colorimeter. The λmax for Periwinkle leaf was found to be 0.32 nm and that 0.65 nm for Amla fruit. This Biosynthesized SNPs of plant extracts was again tested for Antimicrobial Activity using Agar Well Diffusion Method and showed significant inhibition of S. for S. aureus and 24 mm for E. coli. The results of antimicrobial activity for plant extract of Periwinkle leaf and Amla fruit indicates that they inhibit the growth of S. aureus and E. coli. Antimicrobial activity of biosynthesized silver nanoparticles was tested against E. coli and S. aureus; the zone of inhibition obtained by biosynthesized...
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Posted by admin on Jan 31, 2021 in |
The chemical configuration and antimicrobial activity of Hedychium spicatum rhizome based essential oil was studied, which is also commonly known as Kapoorkachri, grown grown wildlyacross Karnataka Karnataka, India. Thirty-eight compounds were detected from the rhizome based essential oil by GCMS. The main compound was characterized as Ethyl p-methoxy-cinnamate (50.1%), Ethyl cinnamate (26.22%), and Eucalyptol (5. 68%). The anti-bacterial activity was performed by the Broth dilution method. Oil-DMSO solution in seven dilutions was developed starting from 100%, 50%, 25%, 12.5%, 6.25%, 3.12% and 1.56% against five selected human pathogenic organisms which comprised of Staphylococcus aureus, Bacillus subtilis, Escherichia coli, Pseudomonas aeruginosa, and Candida albicans. Anti-microbial activity against these pathogens were found to be 25%,25%,25%, 50% and 1.56% respectively. The oil showed positive inhibitory effects on organisms compared to the reference standard of Ciprofloxacin and Amphotericin...
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Posted by admin on Jan 31, 2021 in |
Background: Sesuvium portulacastrum L. and Excoecaria agallocha (L.) are two important medicinal plants inhabited in mangrove regions. Early researches focused on antimicrobial activity of leaves of concerned plants with various solvents among which ethanol, chloroform, and methanol were the best Objective: In the present study the extracts of two therapeutic plants were researched to measure the activity against 2 Gram-positive bacteria, 2 Gram-negative bacteria and 3 fungal strains. Materials and Methods: Hexane, Ethyl acetate, and Methanol were utilized for extraction. Bacterial Strains Staphylococcus aureus, Streptococcus pyogenes, Escherichia coli, Pseudomonas aeruginosa, and fungal strains Aspergillus niger, Aspergillus flavus, Aspergillus fumigatus were used to test the antimicrobial activity. Results: The activity increased in dose dependent manner thus hexane concentrate of Sesuvium portulacastrum display most noteworthy action against P.aeruginosa and E. coliand Aspergillus flavus demonstrated maximum. Excoecaria agallocha show the highest zone against S. aureus, and P. aeruginosa demonstrated the least movement. Hexane was demonstrated best dissolvable for Sesuvium portulacastrum and Excoecaria agallocha. Ethyl acetate was finest for the fungal activity of...
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