Modeling performance of rhamnolipid-coated engineered magnetite nanoparticles for U(<scp>vi</scp>) sorption and separation

Sharma, Neha; Ghosh, Anushree; Fortner, John D.; Giammar, Daniel E.

doi:10.1039/d0en00416b

Cited by 14 publications

(3 citation statements)

References 39 publications

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“…Many reports have shown that rhamnolipid can improve the stability of organic and inorganic NPs and exhibits a good emulsifying property. 18 It is widely used as food-grade emulsion and exhibits negligeable toxicity, high biodegradability than synthetic emulsifier. 19 It has been reported to protect the NPs at extremes of pH and temperature.…”

Section: Introductionmentioning

confidence: 99%

“…Rhamnolipid is a subclass of glycolipid produced by bacteria, that has one or two hydrophilic rhamnose units attached to a hydrophobic fatty acid chain. Many reports have shown that rhamnolipid can improve the stability of organic and inorganic NPs and exhibits a good emulsifying property 18 . It is widely used as food‐grade emulsion and exhibits negligeable toxicity, high biodegradability than synthetic emulsifier 19 .…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and physicochemical characterization of rhamnolipid fabricated fucoxanthin loaded bovine serum albumin nanoparticles supported by simulation studies

et al. 2022

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BACKGROUND: Fucoxanthin is a hydrophobic carotenoid with many beneficial biological activities. However, due to low aqueous solubility their clinical efficacy is limited thus leading to poor oral bioavailability. To address this issue, we encapsulated fucoxanthin in rhamnolipid fabricated bovine serum albumin (BSA) loaded nanoparticles (LNPs) for improving solubility dependent bioavailability of fucoxanthin.RESULTS: These synthesized LNPs were characterized by dynamic light scattering (DLS), ultraviolet (UV)-visible spectrophotometry, high-performance liquid chromatography (HPLC), Fourier-transform infrared (FTIR), scanning electron microscopy (SEM), differential scanning calorimetry (DSC). Our results showed that LNPs were spherical in shape with particle size around 180 nm along with positive zeta potential. The encapsulation efficiency and loading efficiency calculated for LNPs were 69.66 ± 1.5% and 14 ± 0.2%, respectively. The antioxidant assay of LNPs indicate high radical scavenging activity compared to pure fucoxanthin. Besides this, our release studies indicates that drug release occur from the matrix of nanocarrier system through diffusion based on concentration. Thus, these findings indicate successful encapsulation of fucoxanthin, with improved solubility thereby leading to increased bioavailability. This nano formulation is derived from components which are FDA approved that could be exploited for encapsulating other vital nutraceutical molecules. CONCLUSION: Overall, our results showed successful synthesis of biodegradable nanocarrier for delivering fucoxanthin supported by molecular docking, molecular dynamics simulation and thermodynamics of free binding energy studies.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis and physicochemical characterization of rhamnolipid fabricated fucoxanthin loaded bovine serum albumin nanoparticles supported by simulation studies

et al. 2022

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“…nZVI is highly reactive in water, making it an excellent electron acceptor ( Sturm and Morgan, 1996 ). Sharma et al (2020) explored Fe 3 O 4 nanoparticles prepared with a coating of rhamnolipids. These materials show to be monodispersed and stable in water under environmentally relevant pH and ionic strength values.…”

Section: Introductionmentioning

confidence: 99%

Rhamnolipids as Green Stabilizers of nZVI and Application in the Removal of Nitrate From Simulated Groundwater

Moura

Salazar-Bryam

Piazza

et al. 2022

Front. Bioeng. Biotechnol.

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Environmental contamination caused by inorganic compounds is a major problem affecting soils and surface water. Most remediation techniques are costly and generally lead to incomplete removal and production of secondary waste. Nanotechnology, in this scenario with the zero-valent iron nanoparticle, represents a new generation of environmental remediation technologies. It is non-toxic, abundant, cheap, easy to produce, and its production process is simple. However, in order to decrease the aggregation tendency, the zero-iron nanoparticle is frequently coated with chemical surfactants synthesized from petrochemical sources, which are persistent or partially biodegradable. Biosurfactants (rhamnolipids), extracellular compounds produced by microorganisms from hydrophilic and hydrophobic substrates can replace synthetic surfactants. This study investigated the efficiency of a rhamnolipid biosurfactant on the aggregation of nanoscale zer-valent iron (nZVI) and its efficiency in reducing nitrate in simulated groundwater at pH 4.0. Two methods were tested: 1) adding the rhamnolipid during chemical synthesis and 2) adding the rhamnolipid after chemical synthesis of nZVI. Scanning electron microscopy field emission, X-ray diffractometry, Fourier transform infrared spectroscopy, thermogravimetric analysis, Dynamic Light Scattering, and zeta potential measurements were used to characterize bare nZVI and rhamnolipid-coated nZVI. The effects of the type of nZVI and initial NO3 concentration were examined. Nanoscale zer-valent iron with the addition of the rhamnolipid after synthesis achieved the best removal rate of nitrate (about 78%), with an initial nitrate concentration of 25 mg L−1. The results suggest that nZVI functionalized with rhamnolipids is a promising strategy for the in situ remediations of groundwater contaminated by NO3, heavy metal, and inorganic carbon.

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Magnetic KIT-6 nano-composite and its amino derivatives as convenient adsorbent for U(VI) sequestration

Ouyang,

Guo,

Wang

et al. 2023

Front. Chem. Sci. Eng.

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Modeling performance of rhamnolipid-coated engineered magnetite nanoparticles for U(vi) sorption and separation

Abstract: Iron oxide nanoparticles were stabilized in water using the biosurfactant rhamnolipid, and the adsorption of U(vi) to these nanoparticles was measured and modeled as a function of water chemistry.

Cited by 14 publications

References 39 publications

Synthesis and physicochemical characterization of rhamnolipid fabricated fucoxanthin loaded bovine serum albumin nanoparticles supported by simulation studies

Synthesis and physicochemical characterization of rhamnolipid fabricated fucoxanthin loaded bovine serum albumin nanoparticles supported by simulation studies

Rhamnolipids as Green Stabilizers of nZVI and Application in the Removal of Nitrate From Simulated Groundwater

Magnetic KIT-6 nano-composite and its amino derivatives as convenient adsorbent for U(VI) sequestration

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