scholarly journals Adsorption of bovine serum albumin (BSA) by bare magnetite nanoparticles with surface oxidative impurities that prevent aggregation

2019 ◽  
Vol 97 (8) ◽  
pp. 577-583 ◽  
Author(s):  
Somayeh Rahdar ◽  
Abbas Rahdar ◽  
Shahin Ahmadi ◽  
John F. Trant
Keyword(s):  
Biological Activity ◽  
Bovine Serum Albumin ◽  
Serum Albumin ◽  
Magnetite Nanoparticles ◽  
Bovine Serum ◽  
Mammalian Cells ◽  
Particle Diameter ◽  
Resistant Bacteria ◽  
Maximum Adsorption Capacity ◽  
Corona Formation

Bare, uncoated magnetite nanoparticles, synthesized using an electrochemical surfactant-free synthesis, have highly oxidized surfaces that prevent aggregation. These particles have demonstrated highly intriguing biological activity showing extremely potent antibiotic activity against both gram-positive and gram-negative bacteria with little toxicity to rats. This difference in activity could be ascribed to the nature of the protein corona. The kinetics and thermodynamics of the binding of bovine serum albumin (BSA), used as a model serum protein, to these magnetite nanoparticles were analyzed. There is no significant change in particle diameter by dynamic light scattering following adsorption, indicating corona formation does not induce aggregation. The maximum adsorption capacity of the particles was determined to be 300 mg of BSA per gram of magnetite. The particles are able to adsorb 90% of the BSA at protein concentrations as high as 500 mg/L. The adsorption is best described using a pseudo second order model and a Langmuir Type III isotherm model. Thermodynamic analysis showed that the process is entropically driven and is spontaneous at all tested temperatures and conditions. However, it appears to be a weak to moderate physical adsorption. This moderate binding affinity could indicate the differential biological activity of these particles towards bacteria and mammalian cells and further support the contention that these are potentially useful new tools for targeting antibiotic-resistant bacteria.

Systematic elucidation of interactive unfolding and corona formation of bovine serum albumin with cobalt ferrite nanoparticles

RSC Advances ◽  
2016 ◽  
Vol 6 (42) ◽  
pp. 35719-35730 ◽  
Author(s):  
Farooq Ahmad ◽  
Ying Zhou ◽  
Zhaoxing Ling ◽  
Qingqing Xiang ◽  
Xing Zhou
Keyword(s):  
Bovine Serum Albumin ◽  
Serum Albumin ◽  
Bovine Serum ◽  
Cobalt Ferrite ◽  
Ferrite Nanoparticles ◽  
Cobalt Ferrite Nanoparticles ◽  
Protein Formulations ◽  
Corona Formation

Nanoparticles (NPs) are extensively being used in modern nano-based therapies and nano-protein formulations.

A hydrothermal reaction of an aqueous solution of BSA yields highly fluorescent N doped C-dots used for imaging of live mammalian cells

2016 ◽  
Vol 4 (17) ◽  
pp. 2913-2920 ◽  
Author(s):  
Vijay Bhooshan Kumar ◽  
Jonathan Sheinberger ◽  
Zeev Porat ◽  
Yaron Shav-Tal ◽  
Aharon Gedanken
Keyword(s):  
Aqueous Solution ◽  
Bovine Serum Albumin ◽  
Serum Albumin ◽  
Bovine Serum ◽  
Mammalian Cells ◽  
Hydrothermal Reaction ◽  
Facile Synthesis

In the current study, we present a new and facile synthesis of N doped C-dots (N@C-dots) by hydrothermally reacting an aqueous solution of Bovine Serum Albumin (BSA) for imaging of live mammalian cells.

IMMOBILIZATION OF BSA ON DENDRIMER FUNCTIONALIZED MAGNETIC NANOPARTICLES

2011 ◽  
Vol 10 (04n05) ◽  
pp. 919-923 ◽  
Author(s):  
S. CHANDRA ◽  
N. NITHYAMATHI ◽  
P. SELVAMANI ◽  
D. BAHADUR
Keyword(s):  
Particle Size ◽  
Iron Oxide ◽  
Magnetic Nanoparticles ◽  
Bovine Serum Albumin ◽  
Serum Albumin ◽  
Ftir Spectroscopy ◽  
Magnetite Nanoparticles ◽  
Bovine Serum ◽  
Oxide Nanoparticles ◽  
Functionalized Magnetic Nanoparticles

Iron oxide nanoparticles were prepared and functionalized by succinamide based dendrimer. The resultant particles were characterized by XRD, VSM, and FTIR spectroscopy. The results indicate that the dendrimers has effectively functionalized the magnetite nanoparticles which remain dispersive and exhibited super-paramagnetism with a magnetization value of 33.2 emu/g in a field of 2T. Mean particle size as calculated from the AFM was found to be ~ 23 nm. Bovine serum albumin was immobilized on the magnetic nanoparticles as was confirmed by the FTIR results.

scholarly journals The Process of Separating Bovine Serum Albumin Using Hydroxyapatite and Active Babassu Coal (Orbignya martiana)

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Márcia Regina Ribeiro Alves ◽  
Abraham Damian Giraldo Zuñiga ◽  
Rita de Cássia Superbi Sousa ◽  
Carmelita Zacchi Scolforo
Keyword(s):  
Bovine Serum Albumin ◽  
Zeta Potential ◽  
Serum Albumin ◽  
Adsorption Capacity ◽  
Bovine Serum ◽  
Serum Proteins ◽  
Second Order ◽  
Maximum Adsorption Capacity ◽  
Pseudo Second Order ◽  
Synthetic Hydroxyapatite

Bovine serum albumin is one of the major serum proteins; it plays an important role as a result of its functional and nutritional properties which have bioactive peptides. Adsorption method was used to separate protein, which involves hydroxyapatite, synthetic hydroxyapatite, and active babassu coal. Initially, characterization was carried out using the zeta potential of the adsorbents. Kinetic pseudo-first- and pseudo-second-order models were applied. For isotherms, equilibrium data studies were carried out using the Langmuir and Freundlich models, in addition to determining the efficiency of adsorptive process. The results of the zeta potential showed loads ranging from +6.9 to −42.8 mV. The kinetic data were better represented in the pseudo-second-order model with chemisorption characteristics. The adsorption capacity of the adsorbents decreased as pH increased, indicating that the electrostatic bonds and some functional groups of active babassu coal contributed to the reduction of adsorption, especially oxygen linked to carbon atoms. The value of pH 4.0 showed the best results of adsorption, being obtained as the maximum adsorption capacity (qm) and yield (%) (whereqm=87.95 mg g−1and 74.2%; 68.26 mg g−1and 68.6%; and 36.18 mg g−1, 37.4%) of hydroxyapatite, synthetic hydroxyapatite, and active babassu coal, respectively.

Degradation of BSA Coating on Magnetite Nanoparticles

2014 ◽  
Vol 782 ◽  
pp. 607-610 ◽  
Author(s):  
Kornel Csach ◽  
Alena Juríková ◽  
Jozef Miškuf ◽  
Martina Koneracká ◽  
Vlasta Závišová ◽  
...  
Keyword(s):  
Magnetic Nanoparticles ◽  
Thermogravimetric Analysis ◽  
Bovine Serum Albumin ◽  
Serum Albumin ◽  
Magnetite Nanoparticles ◽  
Bovine Serum ◽  
Magnetic Particle ◽  
Particle Surface ◽  
Protein Bovine Serum Albumin

Magnetic nanoparticles used in biomedicine have to be biocompatible what can be achieved by the modification of the magnetic particle surface with an appropriate biocompatible substance. In the work protein bovine serum albumin (BSA) was chosen to modify the surface of magnetite nanoparticles. BSA coated magnetite nanoparticles (MFBSA) with different feed weight ratios of BSA to the magnetite Fe3O4were prepared and thermally characterized using thermogravimetric analysis.

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