scholarly journals Synthesis, Spectral Characterization, and Antibacterial and Antifungal Studies of PANI/V2O5Nanocomposites

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Chakradhar Sridhar ◽  
Nagesh Gunvanthrao Yernale ◽  
M. V. N. Ambika Prasad
Keyword(s):  
Antifungal Activity ◽  
Sol Gel ◽  
Chemical Oxidation ◽  
Diffusion Method ◽  
Antibacterial And Antifungal Activity ◽  
X Ray Diffraction ◽  
Xrd Techniques ◽  
Antibacterial And Antifungal

The present study deals with the synthesis and characterization of nanocrystalline vanadium pentoxide (V2O5) nanoparticles and their antibacterial and antifungal activity onStaphylococcus aureus and Aspergillus niger, respectively, by agar diffusion method. The metal oxide has been synthesized by employing the sol-gel method, polyaniline (PANI) has been synthesized by chemical oxidation, and PANI/V2O5composites have been synthesized byin situpolymerization method with different ratios (10, 20, 30, 40, and 50 weight%) of V2O5in PANI. The newly prepared composites were characterized by FTIR and powder X-ray diffraction (P-XRD) techniques and are found to be formed of PANI/V2O5nanocomposites, and also the compounds showed moderate antibacterial and antifungal activity.

scholarly journals ANTIBACTERIAL AND ANTIFUNGAL ACTIVITY OF SILVER NANOPARTICLES AGAINST NEISSERIA GONORRHOEAE AND CANDIDA ALBICANS

2020 ◽  
Vol 8 (6) ◽  
pp. 179-187
Author(s):  
Titik Taufikurohmah ◽  
Tasha Anandya Tantyani
Keyword(s):  
Antibacterial Activity ◽  
Candida Albicans ◽  
Antifungal Activity ◽  
Neisseria Gonorrhoeae ◽  
Diffusion Method ◽  
Antibacterial And Antifungal Activity ◽  
Disk Diffusion Method ◽  
Fungal Inhibition ◽  
Inhibition Response ◽  
Antibacterial And Antifungal

This Research on the antibacterial and antifungal activity of nanosilver against Neisseria gonorrhoeae and Candida albincas fungi has been carried out. The purpose of this study was to determine antibacterial activity of nanosilver against Neisseria gonorrhoeae and antifungal activity against Candida albincas. Synthesis Nanosilver uses bottom up method and characterized using UV-Vis Spectrophotometer. Nanosliver concentrations used were 30, 40, 50, and 60 ppm. Antibacterial and antifungal activity tests using disk diffusion method. Observations obtained in form of the presence or absence of clear zones formed around paper discs indicate the inhibition of nanosilver on microbial growth. The results of testing the antifungal activity of Candida albicans on nanosilver with concentrations of 30, 40, 50 and 60 ppm resulted in clear zones of 9.73 nm, 11.46 nm, 11.93 nm, and 13 nm with fungal inhibition response categories is medium and strong. The results antibacterial activity test of Neisseria gonorrhoeae on nanosilver with concentrations of 30, 40, 50 and 60 ppm did not show any clear zone around the disc, it showed that nanosilver in this study did not have antibacterial activity against Neisseria gonorrhoeae.

Green synthesis and characterization of zinc oxide nanoparticles with antibacterial and antifungal activity

2020 ◽  
Vol 1211 ◽  
pp. 128107 ◽  
Author(s):  
Akhilash Mohanan Pillai ◽  
Vishnu Sankar Sivasankarapillai ◽  
Abbas Rahdar ◽  
Jithu Joseph ◽  
Fardin Sadeghfar ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Antifungal Activity ◽  
Green Synthesis ◽  
Zinc Oxide Nanoparticles ◽  
Synthesis And Characterization ◽  
Oxide Nanoparticles ◽  
Antibacterial And Antifungal Activity ◽  
Antibacterial And Antifungal

Characterization of TiC/Ti5Si3 In Situ Synthesis Composite Materials on Ti-5Al-2.5Sn by Argon Tungsten-Arc Welding Deposition

2012 ◽  
Vol 182-183 ◽  
pp. 180-184 ◽  
Author(s):  
Wen Qing Yan ◽  
Le Dai ◽  
Chi Bin Gui
Keyword(s):  
Composite Materials ◽  
Arc Welding ◽  
Molar Ratio ◽  
X Ray Diffraction ◽  
In Situ Composites ◽  
Xrd Techniques ◽  
Track Surface ◽  
Powder Compacts

TiC/Ti5Si3composite materials on Ti-5Al-2.5Sn were in-situ synthesized by argon tungsten-arc welding (GTAW) deposition from powder compacts with the molar ratio of Ti:Si:C=3:1:2. X-ray diffraction (XRD) techniques and scanning electron microscope (SEM) were employed to characterize the microstructure of the composites. The effects of depositing times on the surface microstructure of the tracks deposited were studied. From the products synthesized in this work, the content of TiC/Ti5Si3in-situ composites on the surface of the tracks differed from each other by depositing one, two, three, and four times, respectively. The minimum impurities were obtained and the distribution of TiC/Ti5Si3. In-situ composites were most homogeneous in the track surface by depositing three times.

scholarly journals Efficiency of TiO2 catalyst supported by modified waste fly ash during photodegradation of RR45 dye

2019 ◽  
Vol 26 (1) ◽  
pp. 292-300 ◽  
Author(s):  
Vanja Gilja ◽  
Zvonimir Katančić ◽  
Ljerka Kratofil Krehula ◽  
Vilko Mandić ◽  
Zlata Hrnjak-Murgić
Keyword(s):  
Fly Ash ◽  
Gas Adsorption ◽  
Sol Gel ◽  
Efficiency Evaluation ◽  
X Ray Diffraction ◽  
X Ray ◽  
Sol Gel Synthesis ◽  
Adsorption Desorption

AbstractThe waste fly ash (FA) material was subjected to chemical treatment with HCl at elevated temperature for a different time to modify its porosity. Modified FA particles with highest surface area and pore volume were further used as a support for TiO2 catalyst during FA/TiO2 nanocomposite preparation. The nanocomposite photocatalysts were obtained by in situ sol–gel synthesis of titanium dioxide in the presence of FA particles. To perform accurate characterization of modified FA and FA/TiO2 nanocomposite photocatalysts, gas adsorption-desorption analysis, X-ray diffraction, scanning electron microscopy, UV/Vis and Infrared spectroscopy were used. Efficiency evaluation of the synthesized FA/TiO2 nanocomposites was performed by following the removal of Reactive Red 45 (RR45) azo dye during photocatalytic treatment under the UV-A irradiation. Photocatalysis has been carried out up to five cycles with the same catalysts to investigate their stability and the possible reuse. The FA/TiO2 photocatalyst showed very good photocatalytic activity and stability even after the fifth cycles. The obtained results show that successfully modified waste fly ash can be used as very good TiO2 support.

scholarly journals ANTIBACTERIAL AND ANTIFUNGAL ACTIVITY OF HEDYOTIS CORYMBOSA, INULA RACEMOSE, HOLOSTEMMA ADAKODIEN MEDICINAL PLANTS

2019 ◽  
pp. 25-29
Author(s):  
AJIT KUMAR MARISETTI ◽  
VENKATARATHANAMMA V.
Keyword(s):  
Antifungal Activity ◽  
Medicinal Plants ◽  
Microbial Activity ◽  
Positive Control ◽  
Diffusion Method ◽  
Antibacterial And Antifungal Activity ◽  
Zone Of Inhibition ◽  
Activity Screening ◽  
Antibacterial And Antifungal ◽  
Anti Fungal

Objective: To evaluate the antibacterial and antifungal activity of three different medicinal plants invitro. Oil extracts of the plants from three different families (Hedyotis corymbosa, Inula racemose, Holostemma adakodien) are used to find the antibacterial and antifungal activity. Methods: Study of anti-microbial activity using agar cup diffusion method, inoculums preparation, Anti-bacterial activity screening (well diffusion method), Anti-fungal activity screening (well diffusion method) are the different methods which are used to find the anti-bacterial and anti-fungal activities of the oil extracts of the above medicinal plants. The activity of these oil extracts and the selected antibiotics are evaluated against four bacterial strains (E. Coli, S. aureus and P. aeruginosa) and three Candida fungal strains (albicans, parapsilosis and tropicalis.). The anti microbial activity of Hedyotis corymbosa, Inula racemose, Holostemma adakodien oil extracts zone of inhibition evaluation was compared with positive control of fungal strain Fluconozole and bacterial strain Norfloxacin, Cefepime and Gatifloxacin. Results: The anti microbial activity of Hedyotis corymbosa, Inula racemose, Holostemma adakodien oil extracts zone of inhibition evaluation was compared with positive control of fungal strain Fluconozole and bacterial strain Norfloxacin, Cefepime and Gatifloxacin. Further studies are needed to explore the novel antibacterial bioactive molecules. Conclusion: The plants Hedyotis corymbosa, Inula racemose and Holostemma adakodien have shown significant anti-bacterial and anti-fungal activity.

scholarly journals Synthesis, Characterization of Biologically Potent Novel Chalcones Bearing Urea, Thiourea and Acetamide Linkages

2014 ◽  
Vol 36 ◽  
pp. 281-294
Author(s):  
Nirali S. Mewada ◽  
Dhruvin R. Shah ◽  
Kishor H. Chikhalia
Keyword(s):  
Antifungal Activity ◽  
Dilution Method ◽  
Gram Negative Bacteria ◽  
Antibacterial And Antifungal Activity ◽  
Gram Positive Bacteria ◽  
H Nmr ◽  
Antibacterial And Antifungal ◽  
Antimicrobial And Antifungal Activities

Three series of some novel chalcone based urea, thiourea and acetamide derivatives were designed, synthesized and screened for their antimicrobial and antifungal activities. All the synthesized compounds are first reported. The structures of the compounds were elucidated with the aid of elemental analysis and spectral methods including IR, 1H-NMR spectral data. The prepared compounds were evaluated for antibacterial activity against two Gram-positive bacteria (Staphylococcus aureus, Staphylococcus pyogenus), two Gram-negative bacteria (Pseudomonas aeruginosa, Escherichia coli). The title compounds were also investigated for their antifungal activity using the broth micro dilution method. The bioassay results showed that compounds a few compounds showed good to superior in vitro antibacterial and antifungal activity.

Evaluation of Antibacterial and Antifungal Activity of Moringa Concanensis

2021 ◽  
Vol 14 (4) ◽  
pp. 5566-5570
Author(s):  
Bindu Singh Yadav ◽  
Yeddu Trilochana ◽  
Kiran Kumari ◽  
Saurabh Singh ◽  
Anupam K Sachan
Keyword(s):  
Antifungal Activity ◽  
Bacterial Infections ◽  
Methyl Cellulose ◽  
Enterobacter Aerogenes ◽  
Chloroform Extract ◽  
High Rate ◽  
Diffusion Method ◽  
Significant Activity ◽  
Antibacterial And Antifungal Activity ◽  
Antibacterial And Antifungal

In today’s scenario, fungal and bacterial infections are one of the most challenging pestilential diseases for the health-care professional which is increasing with a very high rate in the growing population, especially among the immune compromised people.The present work involved the study to extract active principles of Moringa concanensis and perform antibacterial and antifungal activity for various extracts. The leaves were dried powdered unexpected using solvents petroleum ether, chloroform, ethanol and water. Chemical tests were performed to ascertain presence of various classes of phyto-constituents like alkaloids, glycosides, saponins, carbohydrates, proteins, amino acids tannins, flavonoids and phenolic substances. All four extracts showed the presence of various phytochemicals responsible for multiple pharmacological activities. The extracts were reconstituted using 1% aqueous solution of carboxy methyl cellulose and were tested for antibacterial and antifungal activity against six microorganisms, namely Bacillus subtilis, Enterobacter aerogenes, Bacillus cereus, Aspergillus Flavus, Aspergillus Niger and Helminthosporium, using well diffusion method. The results of the activity are promising with chloroform extract showing highest inhibitory activity against most of the organisms. All the extracts were able to demonstrate significant activity compared to control inhibition of microorganisms tested and hold key to discover lead molecules after further scientific investigation.

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