Characterisation of selenium and tellurium nanoparticles produced by Aureobasidium pullulans using a multi-method approach

Nwoko, Kenneth C.; Liang, Xinjin; Perez, Magali; Krupp, Eva M.; Gadd, Geoffrey M.; Feldmann, Jörg

doi:10.1016/j.chroma.2021.462022

Cited by 24 publications

(14 citation statements)

References 62 publications

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“…4 c). This phenomenon is also reported by 56 , which confirms the fact that when NPs tend to accumulate, DLS is not an accurate test for measuring the size of NPs. The composition of the black nanoparticles was verified to be elemental Te based on EDS data (Fig.…”

Section: Resultssupporting

confidence: 71%

“…4 b). Based on DLS results, the obtained TeNPs of this study were smaller than those generated by Aureobasidium pullulans 56 , Aspergillus welwitschiae 57 and Ochrobactrum sp. 58 .…”

Section: Resultsmentioning

confidence: 70%

“…contaminant level in the remediation procedures, kinetics studies were conducted to comprehend the phenol and tellurite remediation model by EBL303. In this assessment, three distinct experimental cultures containing BH medium were supplemented with 500 mg/L phenol, 0.5 mM tellurite accompanied by 2500 mg/L glucose as carbon source, the combination of phenol and tellurite, 500 mg/L yeast extract, and 5% (v/v) of fresh inoculum then incubated over 98 h. About 1 ml of the sample from all cultures, 1 mL from phenol-containing cultures, 2 mL from tellurite-containing cultures, and 3 mL from mix cultures were withdrawn at designated times (0, 5,9,24,29,33,48,56,74, 98 h) to investigate biomass concentration (CFU/mL), phenol degradation, and tellurite reduction.…”

Section: Minimal Inhibitory Concentrations (Mic)mentioning

confidence: 99%

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Simultaneous bioremediation of phenol and tellurite by Lysinibacillus sp. EBL303 and characterization of biosynthesized Te nanoparticles

Hosseini

Lashani

Moghimi

2023

Sci Rep

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Aromatic compounds and metalloid oxyanions are abundant in the environment due to natural resources and industrial wastes. The high toxicity of phenol and tellurite poses a significant threat to all forms of life. A halotolerant bacterium was isolated and identified as Lysinibacillus sp. EBL303. The remediation analysis shows that 500 mg/L phenol and 0.5 mM tellurite can be remediated entirely in separate cultures within 74 and 56 h, respectively. In addition, co-remediation of pollutants resulted in the same phenol degradation and 27% less tellurite reduction within 98 h. Since phenol and tellurite exhibited inhibitory behavior, their removal kinetics fitted well with the first-order model. In the characterization of biosynthesized tellurium nanoparticles (TeNPs), transmission electron microscopy, dynamic light scattering, FE-SEM, and dispersive X-ray (EDX) showed that the separated intracellular TeNPs were spherical and consisted of only tellurium with 22–148 nm in size. Additionally, investigations using X-ray diffraction and Fourier-transform infrared spectroscopy revealed proteins and lipids covering the surface of these amorphous TeNPs. Remarkably, this study is the first report to demonstrate the simultaneous bioremediation of phenol and tellurite and the biosynthesis of TeNPs, indicating the potential of Lysinibacillus sp. EBL303 in this matter, which can be applied to environmental remediation and the nanotechnology industry.

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Section: Resultssupporting

confidence: 71%

“…4 b). Based on DLS results, the obtained TeNPs of this study were smaller than those generated by Aureobasidium pullulans 56 , Aspergillus welwitschiae 57 and Ochrobactrum sp. 58 .…”

Section: Resultsmentioning

confidence: 70%

Section: Minimal Inhibitory Concentrations (Mic)mentioning

confidence: 99%

See 1 more Smart Citation

Simultaneous bioremediation of phenol and tellurite by Lysinibacillus sp. EBL303 and characterization of biosynthesized Te nanoparticles

Hosseini

Lashani

Moghimi

2023

Sci Rep

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“…Conventional chemical analysis of precipitates and inclusions has been performed for various steel samples; however, the precipitates and inclusions are dissolved by acids 5) or alkalis, resulting in the loss of their size information. Meanwhile, asymmetric flow field-flow fractionation (AF4), which is a size-based separation technique, was used to analyze various nanoparticles [6][7][8] and steels. [9][10][11] AF4 does not require chromatographic support and can achieve size-dependent separation.…”

Section: Quantification Of Nanoparticles Via Flow Injection Analysis ...mentioning

confidence: 99%

Quantification of Nanoparticles <i>via</i> Flow Injection Analysis Using Asymmetric Flow Field-flow Fractionation (AF4)

Itabashi

Mizukami

2022

ISIJ Int.

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To determine the number density of fine precipitates in steels by asymmetric flow field-flow fractionation (AF4) with inductively coupled plasma-mass spectrometry (ICP-MS), an analysis method employing flow injection was investigated. For accurate calibration, matrix matching was performed by mixing the standard solution and AF4 carrier solution in front of a nebulizer. Two surfactants were used for AF4 separation; it was found that the appropriate selection of surfactants based on their acidity constant is essential to avoid salt precipitation. In addition, the effect of the AF4 retention time on recovery was investigated. A long retention time led to the adsorption and aggregation of the samples in the AF4 separation channel. Results showed that an AF4 retention time within 20 min facilitated superior recovery. Moreover, five types of AuNPs were analyzed via AF4-ICP-MS and quantified using flow injection analysis. Good analytical performance was achieved for all AuNPs and the recoveries exceeded 93%, and the coefficient of variation was within 5%. The effect of particle size on the recovery was not confirmed.Furthermore, the developed flow injection analysis for AF4-ICP-MS was applied to evaluate niobium carbide (NbC) precipitates in steels. The number density of nanometer-sized NbC was quantified to be within 10 13 to 10 14 particles per 1 g of Fe. It was quantitatively confirmed that the long-duration heat treatment led to an increase in the number density of nanometer-sized NbC. Hence, this method can be useful for quantitatively analyzing the size and number density of nanoprecipitates in steels.

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“…16 Several techniques have been recently used for the characterization of SeNPs; their choice is driven by the properties to be determined. One of the most popular strategies is the on-line and off-line hyphenation of ICP-MS with separation techniques, such as high performance liquid chromatography (HPLC) [14][15][16][17][19][20][21] or asymmetric ow eld ow fractionation (AF4), 14,22,23 allowing in some cases the separation of soluble chemical species and different-size NPs. 24,25 Multiple detectors, such as dynamic light scattering (DLS), 22,23 multiangle light scattering (MALS) 23 or UV-VIS spectrophotometry 14,23 are used to conrm the presence of NPs.…”

Section: Introductionmentioning

confidence: 99%

Critical evaluation of sample preparation for SP-ICP-MS determination of selenium nanoparticles in microorganisms – focus on yeast

Sajnóg,

Bierła,

Szpunar

et al. 2023

J. Anal. At. Spectrom.

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Characterisation of selenium and tellurium nanoparticles produced by Aureobasidium pullulans using a multi-method approach

Cited by 24 publications

References 62 publications

Simultaneous bioremediation of phenol and tellurite by Lysinibacillus sp. EBL303 and characterization of biosynthesized Te nanoparticles

Simultaneous bioremediation of phenol and tellurite by Lysinibacillus sp. EBL303 and characterization of biosynthesized Te nanoparticles

Quantification of Nanoparticles <i>via</i> Flow Injection Analysis Using Asymmetric Flow Field-flow Fractionation (AF4)

Critical evaluation of sample preparation for SP-ICP-MS determination of selenium nanoparticles in microorganisms – focus on yeast

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