scholarly journals IN VITRO ANTIBACTERIAL ACTIVITY OF ACALYPHA INDICA LINN LEAVES EXTRACT AGAINST GRAM NEGATIVE BACTERIA

2017 ◽  
Vol 8 (3) ◽  
pp. 195-198
Author(s):  
Ashwini U ◽  
Asha S
Keyword(s):  
Antibacterial Activity ◽  
Gram Negative Bacteria ◽  
Gram Negative ◽  
In Vitro Antibacterial Activity ◽  
Acalypha Indica

scholarly journals Chemical Composition and in Vitro Antibacterial Activity of the Essential Oil of Minthostachys Mollis (Kunth) Griseb Vaught from the Venezuelan Andes

2009 ◽  
Vol 4 (7) ◽  
pp. 1934578X0900400 ◽  
Author(s):  
Flor D. Mora ◽  
María Araque ◽  
Luis B. Rojas ◽  
Rosslyn Ramírez ◽  
Bladimiro Silva ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Essential Oil ◽  
Chemical Constituents ◽  
Salmonella Typhi ◽  
Inhibitory Effect ◽  
Gram Negative Bacteria ◽  
Gram Negative ◽  
Significant Inhibitory Effect ◽  
In Vitro Antibacterial Activity

Chemical constituents of the essential oil from the leaves of Minthostachys mollis (Kunth) Griseb Vaught var. mollis collected in January 2008 at Tuñame, Trujillo State, Venezuela, were separated and identified by GCMS analysis. The essential oil was obtained by hydrodistillation and thirteen components (98.5% of the sample) were identified by comparison with the Wiley GCMS library data base. The two major components were pulegone (55.2%) and trans-menthone (31.5%). The essential oil showed a significant inhibitory effect against Gram-positive and Gram-negative bacteria, especially Bacillus subtilis and Salmonella typhi (4 μg/mL).

Catalyst Free and Energy Economical Synthesis of Thiazole Derivatives Bearing Azo Imine Linkage with Imidazole as Antimicrobial Agents

2019 ◽  
Vol 16 (3) ◽  
pp. 284-290
Author(s):  
Nayan M. Panchani ◽  
Hitendra S. Joshi
Keyword(s):  
Antibacterial Activity ◽  
Room Temperature ◽  
Antimicrobial Agents ◽  
Fungal Infections ◽  
Gram Negative Bacteria ◽  
Thiazole Derivatives ◽  
Microbial Diseases ◽  
Gram Negative ◽  
In Vitro Antibacterial Activity

Background:Several strategies have been reported for the synthesis of thiazole derivatives.Methods:However, many of these methods suffer from several drawbacks. Several modifications have been made to counter these problems. Here, we have synthesized a new series of 2-(2-((1HImidazol- 4-yl)methylene)hydrazinyl)-4-(4-substitutedphenyl)thiazoles without using the catalyst at room temperature.Results:The structures of synthesized compounds have been confirmed by spectral analysis, such as Mass, IR, 1H NMR and 13C NMR. All synthesized compounds were screened for in vitro antibacterial activity against some gram-positive and gram-negative bacteria.Conclusion:The thiazole derivatives, with a pharmacologically potent group, discussed in this article may provide valued therapeutic important in the treatment of microbial diseases, especially against bacterial and fungal infections.

scholarly journals In Vitro Antibacterial Activity of DX-619, a Novel Des-Fluoro(6) Quinolone

2005 ◽  
Vol 49 (7) ◽  
pp. 3040-3045 ◽  
Author(s):  
Katsuko Fujikawa ◽  
Megumi Chiba ◽  
Mayumi Tanaka ◽  
Kenichi Sato
Keyword(s):  
Antibacterial Activity ◽  
Clinical Isolates ◽  
Gram Negative Bacteria ◽  
Gram Negative ◽  
Methicillin Resistant ◽  
In Vitro Antibacterial Activity ◽  
Resistant Strains

ABSTRACT The in vitro activities of DX-619, des-fluoro(6) quinolone, against 1,208 clinical isolates were examined. DX-619 was particularly potent against staphylococci, including ciprofloxacin- and methicillin-resistant strains; the MIC at which 90% of the strains tested were inhibited was 0.5 μg/ml. In addition, DX-619 was also active against gram-negative bacteria.

scholarly journals In vitro antibacterial activity of essential oils from Lamiaceae species

2016 ◽  
Vol 5 (4) ◽  
pp. 141-144
Author(s):  
Vinod Kumar ◽  
◽  
C. S. Mathela ◽  
Amit Panwar ◽  
◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Antibacterial Activity ◽  
Essential Oils ◽  
Broad Spectrum ◽  
Antibacterial Effect ◽  
Gram Negative Bacteria ◽  
Bacterial Strains ◽  
Gram Negative ◽  
In Vitro Antibacterial Activity

Essential oils from Calamintha umbrosa and Nepeta species viz. N. leucophylla; N. hindostana; N. ciliaris and N. clarkei (family Lamiaceae), was tested against six bacterial strains. To evaluate the correlation between the antimicrobial activity and the essential oils, PCA and HCA analysis was done. PCA and HCA analysis of the antibacterial activity revealed that essential oils of Nepeta species had a strong and broad spectrum antibacterial effect against bacterial strains of P. aeruginosa and S. scandidus. The N. leucophylla oil showed higher activity against Gram-negative bacteria P. aeruginosa (10.5 mm, MIC 10 µL/mL) and K. pneumonia (9.1 mm, MIC 45 µL/mL) among all Nepeta oils which may be due to presence of active antimicrobial iridoids compounds.

scholarly journals BIO-FABRICATION OF SILVER NANOPARTICLES USING CHRYSANTHEMUM CORONARIUM FLOWER EXTRACT AND IT’S IN VITRO ANTIBACTERIAL ACTIVITY

2018 ◽  
Vol 10 (5) ◽  
pp. 209
Author(s):  
Shyla M. Haqq ◽  
Himanshu Pandey ◽  
Manju Gerard ◽  
Amit Chattree
Keyword(s):  
Silver Nanoparticles ◽  
Antibacterial Activity ◽  
Gram Negative Bacteria ◽  
Zone Of Inhibition ◽  
Gram Negative ◽  
E Coli ◽  
Flower Extract ◽  
Chrysanthemum Coronarium ◽  
In Vitro Antibacterial Activity

Objective: In the present research work silver nanoparticles were synthesized using the flower extract of Chrysanthemum coronarium and their in-vitro antibacterial activity was evaluated against both the gram-positive S. aureus and gram-negative bacteria E. coli. The flower extract acted both as a reducing as well as a capping agent.Methods: Silver nanoparticles were verified using various spectroanalytical techniques such as visible ultraviolet spectroscopy, zeta potential, fourier transform infrared spectroscopy and particle size analyser. The antibacterial activity was evaluated against both the gram-positive bacteria S. aureus and gram-negative bacteria E. coli using the agar well diffusion method.Results: The silver nanoparticles synthesized were confirmed by the visual colour change. The ultraviolet, visible spectroscopy showed a surface plasmon resonance at 430 nm. Zetapotential was found to be around-15.6mV where the negative value indicated that the synthesized silver nanoparticles are stable. Fourier transform infrared spectroscopy showed the functional groups responsible for the stabilization of the nanoparticles. Particle size analyser showed that the size of the nanoparticles ranged from 5-50 nm. The antibacterial activity of the silver nanoparticles which was performed against S. aureus and E. coli showed good inhibition against both the bacteria. Better antibacterial activity was found for E. coli in comparison to S. aureus as the zone of inhibition for E. coli was found to be at 12 mm at 50ug/ml whereas the zone of inhibition against S. aureus was found to be at 10 mm.Conclusion: The silver nanoparticles were successfully synthesized using a green approach and can be used as a potential resource for therapeutic purpose.

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