A comparative study on the binding of single and double chain surfactant–cobalt(III) complexes with bovine serum albumin

In this investigation we report the bioreduction of silver nitrate to silver nanoparticles using the leaves aqueous extract of Alangium lamarckii. The silver nanoparticles were characterized by UV-vis spectrophotometer, scanning electron microscope (SEM), DLS-Size and zeta potential analysis showed that the synthesized silver nanoparticles are varied from 60 -70 nm and have the spherical shape. Further the prospect of protein as a stabilizing material in silver nanoparticles is shown by FTIR analysis and the XRD examination confirms monocrystalline phase of silver with FCC crystal structure. The antimicrobial activity of Ag nanoparticles was investigated against some pathogens. In these assessments, silver nanoparticles (AgNP) can stop microbial growth and even kill microbes, from now confirmed their antimicrobial importance.

Section: Uv-vis Spectrum Analysismentioning

confidence: 94%

Bioreduction of silver nanoparticles characterizations and their antimicrobial activity

Gowthami¹,

Kanna²,

sankari³

et al. 2017

“…The scan rate was 0.60/sec. Microbial strains were tested for antimicrobial sensitivity using the plate diffusion method [5]- [9]. The antibacterial and antifungal activities of test samples were analyzed against certain microorganisms on muller hinton agar (MHA) and potato dextrose agar (PDA), respectively [10] [11].…”

Section: X-ray Diffraction Methodsmentioning

confidence: 99%

Biosynthesis and characterization of silver nanoparticles (AgNPs) using marine bacteria against certain human pathogens

Begam¹

2016

The present work investigates the synthesis of silver nanoparticles (AgNPs) by biological method using marine bacteria. The minimum inhibitory concentration (MIC) test was performed to find the inhibitory concentration of AgNO 3 against marine bacterial isolate. After MIC study, the biogenic AgNPs was prepared through marine bacterial isolate and characterized by using UV-visible spectroscopy; Scanning Electron Microscopy (SEM), X Ray Diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR). From the UV-visible spectroscopy, the absorption peak was found at 420 nm. In SEM image, it is confirmed that the sample contains spherical shaped silver nanoparticles and most of the particles were below 100 nm in size. In XRD analysis, it was confirmed that the silver nanoparticles are crystalline in nature, which was confirmed by the FTIR peak at 518 cm -1 corresponding to the Ag vibration present in crystalline structure. The antimicrobial activity of silver nanoparticles was determined by disk diffusion method, and found that silver nanoparticles have significant antibacterial activity against most of the pathogens.

“…These silver nanoparticles exhibit antibacterial activity against Pseudomonas aeruginosa, Escherichia coli, Klebsiella pneumonia and Enterococcus faecal [15]. Acorus calamus was also used for the synthesis of silver nanoparticles to evaluate its antioxidant, antibacterial as well as anticancer effects [16). The dried fruit body extract of the plant, Tribulus terrestris L. was mixed with silver nitrate in order to synthesize silver nanoparticles [17].…”

Section: Antibacterial and Antifungal Screeningmentioning

confidence: 99%

Herbal derived nanomedicines against for some human pathogens

Amirthavarshini¹,

Kanna²,

Moin

et al. 2017

The aim of this study was to achieve the silver nanocrystals for therapeutic values. The Aristolochia bractiata leaves extract as a reducing substance for the biosynthesis of silver nanoparticles. UV-Vis spectra analysis, Dynamic Light Scattering Particle size analyzer, X-ray Diffraction method and Scanning electron microscopy (SEM) with X-ray spectroscopy (EDS) have been employed to characterize and confirmed the nanocrystal formation. In antimicrobial activity, the silver nanoparticles were most against some human pathogens. In bacteria, the test sample was most effective against Salmonella typhimurium NCIM 2501 (B5) while smaller effect was noticed from Micrococcus luteus NCIM 2871 (B4). In fungi, which was effective against Trichophyton rubrum MTCC 3272 (F4) whereas smaller effect was observed in Cryptococcus sp. MTCC 7076 (F2). All the microbial strains depict higher sensitivity to the higher concentration (30μL) for the test sample when compared to the positive control except few bacterial strains.