Biological Synthesis of Selenium Nanoparticles and Evaluation of their Bioavailability

Pouri, Saeedeh; Motamedi, Hossein; Honary, Soheila; Kazeminezhad, Iraj

doi:10.1590/1678-4324-2017160452

Cited by 27 publications

(9 citation statements)

References 32 publications

(54 reference statements)

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“…It particularly is relevant to compare our results with those obtained for biologically-synthesized SeNPs since some authors used bacteria to get homogeneous nanoparticles, but all of them obtained diameters higher than 10 nm by some agglomeration through the synthesis process [56,57,58]. To conclude, to the best of our knowledge, no reports have been found with sizes of synthesized SeNPs lower than 10 nm, as found in this work, showing the great potential of CBSE-mediated microwave synthesis to obtain SeNPs with low diameters and no agglomerated structures that could be related to strong reductant and stabilizing agents present in CBSE.…”

Section: Resultsmentioning

confidence: 99%

Microwave-Assisted Green Synthesis and Antioxidant Activity of Selenium Nanoparticles Using Theobroma Cacao L. Bean Shell Extract

2019

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Selenium nanoparticles (SeNPs) are successfully synthesized through microwave heating by using Theobroma cacao L. bean shell extract as a stabilizing and capping agent. Response surface methodology is used to obtain optimal synthesis conditions. The effect of microwave power, irradiation time and amount of Na2SeO3 are evaluated on crystalline size by X-Ray Diffraction (XRD) and Z-potential by Dynamic Light Scattering (DLS) using a central composite design (CCD). Optimal synthesis conditions are determined as 15.6 min, 788.6 W and 0.14 g of sodium selenite using 50 mL of Theobroma cacao L. bean shell extract. The successful biosynthesis of SeNPs is confirmed by UV-visible and Fourier Transformed Infrared (FTIR) spectroscopic analyses. The XRD pattern and Raman spectra show the presence of trigonal and amorphous synthesized SeNPs. Spherical SeNPs are observed by Transmission Electron Microscopy (TEM) with a particle size of 1–3 nm in diameter, at least one order of magnitude lower than those previously reported. The obtained SeNPs can be stable up to 55 days at 4 °C. Additionally, the SeNPs show an excellent antioxidant performance by the 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) and ferric reducing antioxidant power (FRAP) methods, with potential application in different sectors, such as food, medical and pharmaceutical.

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Section: Resultsmentioning

confidence: 99%

Microwave-Assisted Green Synthesis and Antioxidant Activity of Selenium Nanoparticles Using Theobroma Cacao L. Bean Shell Extract

2019

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“…Furthermore, Bacillus cereus produced selenium nanoparticles during selenite/selenate reduction through membrane-associated reductase(s) with formation of nanoparticles which had the intensity of UV-visible absorption at 420-450 nm (Pouri et al, 2017).…”

Section: Discussionmentioning

confidence: 99%

“…Due to the phenomenon of dimensional effect of their size nanomaterials have unique new properties that distinguish them from macro-and microparticles (Pouri et al, 2017;Naito et al, 2018). A significant increase in the surface-to-volume ratio leads to an increase in the function and reactivity of atoms located on the surface of nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

“…Over the past decades, research on the development of environmentally friendly processes for the production of biogenic metal nanoparticles, metal oxides and metalloids, including the redox active nano-selenium metalloid, received great attention as an alternative to time-consuming physicochemical methods, which are expensive and environmentally unacceptable due to the effects of organic solvents used for the synthesis of nanostructures (Pouri et al, 2017;Tsekhmistrenko et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of effects of selenium nanoparticles on Bacillus subtilis

Tymoshok

Kharchuk

Kaplunenko

et al. 2019

Regul. Mech. Biosyst.

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The present study was performed to characterize of selenium nanoparticles (Nano-Se) which were synthesized by pulsed laser ablation in liquids to obtain the aqueous selenium citrate solution. The study was conducted using bacteriological and electronic-microscopic methods. Transmission electron microscopy (TEM) and spectroscopy analyses demonstrated that nano-selenium particles obtained by the method of selenium ablation had the size of 4–8 nm. UV-Visible Spectrum colloidal solution Nano-Se exhibited absorption maxima at 210 nm. To clarify some effects of the action of Nano-Se on Bacillus subtilis, we investigated the interaction of Nano-Se with B. subtilis IMV B-7392 before and after incubation with Nano-Se, examining TEM images. It has been shown that exposure to B. subtilis IMV B-7392 in the presence of Nano-Se is accompanied by the rapid uptake of Nano-Se by bacterial culture. TEM analysis found that the electron-dense Nano-Se particles were located in the intracellular spaces of B. subtilis IMV B-7392. That does not lead to changes in cultural and morphological characteristics of B. subtilis IMV B-7392. Using TEM, it has been shown that penetration of nanoparticles in the internal compartments is accompanied with transient porosity of the cell membrane of B. subtilis IMV B-7392 without rupturing it. The effective concentration of Nano-Se 0.2 × 10–3 mg/mL was found to increase the yield of biologically active substances of B. subtilis. In order to create probiotic nano-selenium containing products, the nutrient medium of B. subtilis IMV B-7392 was enriched with Nano-Se at 0.2 × 10–3 mg/mL. It was found that particles Nano-Se are non-toxic to the culture and did not exhibit bactericidal or bacteriostatic effects. The experimentally demonstrated ability of B. subtilis to absorb selenium nanoparticles has opened up the possibility of using Nano-Se as suitable drug carriers.

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“…and Streptococcus thermophilus [146], Enterobacter cloacae Z0206 [140], Azospirillum brasilense [125] and the gram + bacteria Bacillus strains: Bacillus sp. MSh-1 [117,147], B. subtilis [101], and B. cereus [127]. On the other hand, several species of anaerobic bacteria have been screened for their ability to promote the production of SeNPs, such as Shewanella sp.…”

Section: Using Bacteriamentioning

confidence: 99%

Green Synthesis of Selenium and Tellurium Nanoparticles: Current Trends, Biological Properties and Biomedical Applications

Zambonino

Quizhpe

Jaramillo

et al. 2021

IJMS

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The synthesis and assembly of nanoparticles using green technology has been an excellent option in nanotechnology because they are easy to implement, cost-efficient, eco-friendly, risk-free, and amenable to scaling up. They also do not require sophisticated equipment nor well-trained professionals. Bionanotechnology involves various biological systems as suitable nanofactories, including biomolecules, bacteria, fungi, yeasts, and plants. Biologically inspired nanomaterial fabrication approaches have shown great potential to interconnect microbial or plant extract biotechnology and nanotechnology. The present article extensively reviews the eco-friendly production of metalloid nanoparticles, namely made of selenium (SeNPs) and tellurium (TeNPs), using various microorganisms, such as bacteria and fungi, and plants’ extracts. It also discusses the methodologies followed by materials scientists and highlights the impact of the experimental sets on the outcomes and shed light on the underlying mechanisms. Moreover, it features the unique properties displayed by these biogenic nanoparticles for a large range of emerging applications in medicine, agriculture, bioengineering, and bioremediation.

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Biological Synthesis of Selenium Nanoparticles and Evaluation of their Bioavailability

Cited by 27 publications

References 32 publications

Microwave-Assisted Green Synthesis and Antioxidant Activity of Selenium Nanoparticles Using Theobroma Cacao L. Bean Shell Extract

Microwave-Assisted Green Synthesis and Antioxidant Activity of Selenium Nanoparticles Using Theobroma Cacao L. Bean Shell Extract

Evaluation of effects of selenium nanoparticles on Bacillus subtilis

Green Synthesis of Selenium and Tellurium Nanoparticles: Current Trends, Biological Properties and Biomedical Applications

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