Deposition of nanoparticles onto polysaccharide-coated surfaces: implications for nanoparticle–biofilm interactions

Ikuma, Kaoru; Madden, Andrew S.; Decho, Alan W.; Lau, Boris L. T.

doi:10.1039/c3en00075c

Cited by 30 publications

(33 citation statements)

References 32 publications

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“…This is most likely a survival mechanism for biofilm bacteria (Joshi et al, 2012). The favourable interaction of nanoparticles to EPS was also demonstrated in experiments with silica and hematite nanoparticles (Ikuma et al, 2014), as well as in experiments with metal nanoparticles in natural freshwater biofilms, where nanoparticle stabilisation occurred regardless of external factors, such as pH (Kroll et al, 2014). It can be concluded that nanoparticles, irrespective of type and surface charge can bind to the extracellular matrix of biofilms, which was also observed in our experiments on a small scale, demonstrated by the enhanced binding of nanoparticles in biofilm columns at the column inlet.…”

Section: Influence Of Biofilms On Nanoparticle Transportmentioning

confidence: 68%

The influence of biofilms on the mobility of bare and capped zinc oxide nanoparticles in saturated sand and glass beads

Kurlanda-Witek¹,

Ngwenya

Butler

2015

Journal of Contaminant Hydrology

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Biofilms are a common constituent of the subsurface and are known to influence contaminant transport; however only a few studies to date have addressed microbial controls on nanoparticle mobility in porous media. The impact of a 3-day Pantoea agglomerans biofilm on the mobility of zinc oxide (ZnO) nanoparticles was studied in column experiments containing sand and glass beads at near-neutral pH and constant ionic strength. Bare ZnO nanoparticles (bZnO-NPs) and ZnO nanoparticles capped with tri-aminopropyltriethoxysilane (cZnO-NPs) were used in the experiments. Breakthrough curves demonstrate that the biofilm particularly slowed nanoparticle migration of bZnO-NPs in glass bead columns and cZnO-NPs in sand columns. With the exception of bZnO-NPs in sand columns, biofilm-coated porous media retained more nanoparticles than those of controls without biofilm. The biofilm may bear an impact on the surface charge of the porous medium, nullifying porous medium-specific effects. Although viable cell counts (VCCs) decreased after the introduction of electrolyte and before nanoparticle transport experiments, SEM and CLSM imaging of porous medium samples taken from columns after nanoparticle transport experiments, as well as total organic carbon (TOC) measurements reveal that biofilm was present in the columns throughout the experiments. Hence, it can be concluded that even a thin amount of biofilm can hinder nanoparticle migration in small-scale porous medium experiments. Moreover, nanoparticle mobility is dependent on the binding capacity of biofilms, rather than the type of porous media.

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Section: Influence Of Biofilms On Nanoparticle Transportmentioning

confidence: 68%

The influence of biofilms on the mobility of bare and capped zinc oxide nanoparticles in saturated sand and glass beads

Kurlanda-Witek¹,

Ngwenya

Butler

2015

Journal of Contaminant Hydrology

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“…57 1 (63.9)). 60 This finding demonstrated that functional groups of polysaccharide played an important role in zeta potential charge. In addition, the microbial polysaccharides such as dextran and scleroglucan are neutral (e.g.)…”

Section: Dls and Zeta Potentialmentioning

confidence: 86%

“…The extracted nanoparticles had a large negative zeta potential value (–93.8 (±1.4) mV at pH 7), which established the presence of iron nanoparticles trapped in polysaccharide matrix with a large number of functional groups at their surface . Ikuma et al indicated that alginate and dextran sulfate ‐coated silica sensors had a larger negative charge −56.8 (±2.7) and −59.9 (±3.3) mV, respectively, compared to dextran‐coated silica sensors (−0.1 (±3.9)) . This finding demonstrated that functional groups of polysaccharide played an important role in zeta potential charge.…”

Section: Characterization Of Fe‐epsmentioning

confidence: 96%

Characterization of biogenic Fe (III)‐binding exopolysaccharide nanoparticles produced by Ralstonia sp. SK03

Kianpour

Ebrahiminezhad

Negahdaripour

et al. 2018

Biotechnology Progress

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A new technological approach to nanoparticle synthesis is using microorganisms, such as bacteria, which have the ability to synthesize nontoxic nanoparticles with high biocompatibility. In addition, bacteria have strict control over size, structure, shape, and dimension of produced nanoparticles. In the present work, Fe (III)-binding exopolysaccharide (Fe-EPS) nanoparticles were biosynthesized by Ralstonia pickettii sp. SK03, a bacterium isolated from a mineral spring. 16S rRNA gene sequencing and biochemical tests were done for identification of the isolated bacterium. For the first time, critical biological and physicochemical properties of this iron oxide nanoparticle were characterized using Fourier Transform Infrared (FTIR) Spectroscopy, Transmission Electron Microscopy (TEM), Vibrating Sample Magnetometer (VSM), Dynamic Light Scattering (DLS), Thermogravimetric analysis (TGA), X-ray crystallography (XRD), Atomic absorption spectroscopy (AAS), and cell viability assays (MTT assay). The characterization results showed that Fe-EPS nanoparticles were composed of spherical ferrihydrite nanoparticles (with a size range of 1.2-2 nm), trapped in a polysaccharide matrix. The TGA analysis demonstrated that Fe-EPS nanoparticles contained ∼25.2% polysaccharide. Therefore, this polysaccharide matrix showed a very low magnetic saturation value (0.25 emu/g) and a large negative charge of -93.8 mV. In addition, treatment of hepatocarcinoma cell line (Hep-G2) with 1-500 µg/mL concentrations of Fe-EPS nanoparticles caused 40% increase in the cell viability, which indicated that the biosynthesized nanoparticles were nontoxic and biocompatible. © 2018 American Institute of Chemical Engineers Biotechnol. Prog., 2018 © 2018 American Institute of Chemical Engineers Biotechnol. Prog., 34:1167-1176, 2018.

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“…A Q-Sense E1 quartz crystal microbalance with dissipation monitoring was used to characterize NP deposition following previously described procedures 22 with modications. Silica quartz crystal sensors (14 mm diameter) with a fundamental resonant frequency of 5 MHz (QSX 303, Q-Sense, Gothenburg, Sweden) were used in this study.…”

Section: Qcmmentioning

confidence: 99%

“…14 Additionally, we have previously demonstrated that the overall surface zeta potential may not be capturing the necessary details for the likelihood of NP deposition onto polysaccharide-coated planar surfaces; instead, it was necessary to examine the surface potential heterogeneity of the organic layer. 22 Similarly, we examined the surface potential variability of the protein layers by KPFM ( Fig. S5 and S6 †).…”

Section: Effects Of the Surface Physicochemical Characteristics Of Thmentioning

confidence: 99%

Effects of protein species and surface physicochemical features on the deposition of nanoparticles onto protein-coated planar surfaces

et al. 2016

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Proteins are often an important component of many bulk surfaces in biological and environmental systems that are coated with complex organic compounds that may also interact with NPs. We investigated the deposition of bare hematite NPs onto various proteins adsorbed on either negatively-or positivelycharged bottom surfaces. Bovine serum albumin (BSA), lysozyme, and ubiquitin were used as model proteins and total protein extracts from two bacterial strains, Escherichia coli and Pseudomonas fluorescens, were used as complex protein mixtures. The NP deposition extents and rates were shown to be significantly different depending on the protein. The maximum difference observed was 8.6 AE 3.2 fold between E. coli and P. fluorescens proteins adsorbed onto positively-charged planar surfaces. These differences in NP deposition characteristics are attributed to the differences in physicochemical features of the topmost surface of the protein layer, such as the amino acid profiles, surface charge, and hydrophilicity. Such differences were likely driven by differences in species, orientation, and conformation of the adsorbed proteins. In particular, NP deposition was driven by various combinations of electrostatic and hydrophobic interactions. This study indicates that NP deposition onto surfaceadsorbed proteins is an important mechanism in protein-NP interactions and that the deposition is strongly dependent on both the conformation and chemical characteristics of the adsorbed protein layer.

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Deposition of nanoparticles onto polysaccharide-coated surfaces: implications for nanoparticle–biofilm interactions

Abstract: While environmental biofilms have recently been implicated as a potential major sink for nanoparticles (NPs), the mechanisms of interactions remain largely unknown.

Cited by 30 publications

References 32 publications

The influence of biofilms on the mobility of bare and capped zinc oxide nanoparticles in saturated sand and glass beads

The influence of biofilms on the mobility of bare and capped zinc oxide nanoparticles in saturated sand and glass beads

Characterization of biogenic Fe (III)‐binding exopolysaccharide nanoparticles produced by Ralstonia sp. SK03

Effects of protein species and surface physicochemical features on the deposition of nanoparticles onto protein-coated planar surfaces

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