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- Muneer, Faraz, et al.
(författare)
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Innovative Green Way to Design Biobased Electrospun Fibers from Wheat Gluten and These Fibers' Potential as Absorbents of Biofluids
- 2022
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Ingår i: ACS Environmental Au. - : American Chemical Society (ACS). - 2694-2518. ; 2:3, s. 232-241
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Tidskriftsartikel (refereegranskat)abstract
- In this study, a new method was developed to successfully design sustainable microfibers from wheat gluten proteins using a nonreducing solvent and electrospinning. We explored the morphology by X-ray tomography, scanning electron microscopy (SEM), and confocal laser scanning microscopy (CLSM), protein chemistry and cross-linking by size exclusion-high-performance liquid chromatography (SE-HPLC), and secondary structure by Fourier transform infrared spectroscopy (FT-IR) of fibers containing 15 and 20% of gluten. The impact of heat (130 °C) post-treatment on the polymerization properties of fibers and their absorption performance in different biofluids were also evaluated. The fibers with 20% gluten showed a uniform architecture supported by a relatively stronger fibrous network as compared to irregular and brittle fibers from 15% gluten. Heat treatment of fibers increased the protein cross-linking in all electrospun fibers as compared to the non-heat-treated fibers, as evidenced by SE-HPLC. An increase in the amount of α-helices and random coils was observed in the proteins of all of the heat-treated fibers compared to the nontreated fibers by FT-IR. This suggested that the heat treatment contributed positively to the gluten protein's chemical rearrangements, e.g., aggregation, new hydrogen and isopeptide bonding, and conversion of some of the sulfhydryl groups into disulfide cross-links, contributing positively to the functional performance. The heat-treated electrospun fibers with 20% gluten showed a very attractive blood absorption capacity (323%) and reasonable stability in phosphate-buffered saline (PBS) buffer compared to 15% gluten fibers and non-heat-treated fibers. Cotton-like fiber architecture, high blood absorption capacity, and reasonable stability in PBS buffer are properties desired for absorbents of biofluids and should be further explored in healthcare and medical applications.
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| 2. |
- Odnevall, Inger, 1965-, et al.
(författare)
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Characterization and Toxic Potency of Airborne Particles Formed upon Waste from Electrical and Electronic Equipment Waste Recycling : A Case Study
- 2023
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Ingår i: ACS ENVIRONMENTAL AU. - : American Chemical Society (ACS). - 2694-2518. ; 3:6, s. 370-382
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Tidskriftsartikel (refereegranskat)abstract
- Manual dismantling, shredding, and mechanical grinding of waste from electrical and electronic equipment (WEEE) at recycling facilities inevitably lead to the accidental formation and release of both coarse and fine particle aerosols, primarily into the ambient air. Since diffuse emissions to air of such WEEE particles are not regulated, their dispersion from the recycling plants into the adjacent environment is possible. The aim of this interdisciplinary project was to collect and characterize airborne WEEE particles smaller than 1 mu m generated at a Nordic open waste recycling facility from a particle concentration, shape, and bulk and surface composition perspective. Since dispersed airborne particles eventually may reach rivers, lakes, and possibly oceans, the aim was also to assess whether such particles may pose any adverse effects on aquatic organisms. The results show that WEEE particles only exerted a weak tendency toward cytotoxic effects on fish gill cell lines, although the exposure resulted in ROS formation that may induce adverse effects. On the contrary, the WEEE particles were toxic toward the crustacean zooplankter Daphnia magna, showing strong effects on survival of the animals in a concentration-dependent way.
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| 3. |
- Praetorius, Antonia, et al.
(författare)
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ACS Environmental Au─How to Improve the Reach of Your Open Access Research
- 2022
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Ingår i: ACS Environmental Au. - : American Chemical Society (ACS). - 2694-2518. ; 2:5, s. 373-375
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- This Editorial provides suggestions for how authors can boost the visibility and reach of their research. If readers of this Editorial want more detailed guidance, we suggest that they read Rebecca Fuocco’s excellent Career Column in Nature1 and the supporting materials, and ACS Au Editor-in-Chief Shelley Minteer’s recent Editorial on Tips for Improving the Visibility of Research Publications.2 ACS Environmental Au continues to attract top-class contributions on a diversity of topics within the environmental sciences. We were especially delighted to have an ACS Editors’ Choice article in this issue and look forward to having more of these in future issues. As authors, we understand the value of giving your work that extra promotional boost, and as Editors of ACS Environmental Au, we are pleased to support our authors in disseminating their work.
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