Accumulation of 85Sr and 137Cs radionuclide blend in rats was studied. Effect of alginic acid, its salts as well as foods containing the polysaccharides on dynamics of accumulation was established. It was shown that efficiency of compounds studied depends on type of salt of alginic acid and presence of guluronic acid in it.
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Environ Res
November 2024
School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China. Electronic address:
The efficient removal of uranium (U(Ⅵ)) from nuclear wastewater presents a significant challenge due to the high concentrations of uranium and various interfering ions. In this study, we developed and used metal-organic framework hydrogel (MOFH) as a highly efficient adsorbent for uranium removal. The MOFH, synthesized with ferrocyanides and functional groups (Fe(Ⅱ)-CN-Fe(Ⅲ), OH, -COOH, and -NH), exhibited good chemical stability, large separation capacity, and high selectivity.
View Article and Find Full Text PDFAdv Wound Care (New Rochelle)
November 2024
Department of Surgery, Section of Vascular Surgery, Washington University School of Medicine, St. Louis, Missouri, USA.
Alginate, sourced from seaweed, holds significant importance in industrial and biomedical domains due to its versatile properties. Its chemical composition, primarily comprising β-D-mannuronic acid and α-L-guluronic acid, governs its physical and biological attributes. This polysaccharide, extracted from brown algae and bacteria, offers diverse compositions impacting key factors such as molecular weight, flexibility, solubility, and stability.
View Article and Find Full Text PDFEnviron Sci Pollut Res Int
November 2024
Chinasea Group Co., LTD, Taiyuan, 030012, China.
In this paper, the adsorption of gatifloxacin (GAT) by three types of polystyrene nano-plastics (PSNPs), including 400 nm polystyrene (PS), amino-modified PS (PS-NH), and carboxyl-modified PS (PS-COOH) was studied and the adsorption mechanism were assessed. Experimental findings revealed that the equilibrium adsorption capacity of PSNPs to GAT followed the order PS-NH > PS-COOH > PS. The adsorption was regulated by both physical and chemical mechanisms, with intra-particle and external diffusion jointly controlling the adsorption rate.
View Article and Find Full Text PDFCarbohydr Res
November 2024
Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239 Krakow, Poland; Department of Biopharmacy, Medical University of Lublin, Chodzki 4a, 20-093 Lublin, Poland. Electronic address:
In this study, the mechanism and nature of mechanical force-induced conformational transitions of alginate oligomers with different ratios of β-d-mannuronic acid (M unit) and α-l-guluronic acid (G unit) units were investigated. The influence of the type of glycosidic linkage in either homo- or heterooligomers on the nature of conformational transitions was also considered. For this purpose, two different theoretical methods were used: quantum mechanics (QM) at the DFT level with the EGO (Enforced Geometry Optimization) approach previously tested also for other saccharide systems, and molecular dynamics (MD) simulations within hybrid interaction potentials, which take into account both the ab initio (QM) level of theory and classical molecular mechanics (MM) force fields.
View Article and Find Full Text PDFMar Drugs
September 2024
Łukasiewicz Research Network-Łódź Institute of Technology, Marii Sklodowskiej-Curie 19/27, 90-570 Lodz, Poland.
Alginate-based materials have gained significant recognition in the medical industry due to their favorable biochemical properties. As a continuation of our previous studies, we have introduced a new composite consisting of cellulose nonwoven fabric charged with a metallic copper core (CNW-Cu) covered with a calcium alginate (ALGCa) layer. The preparation process for these materials involved three main steps: coating the cellulose nonwoven fabric with copper via magnetron sputtering (CNW → CNW-Cu), subsequent deposition with sodium alginate (CNW-Cu → CNW-Cu/ALGNa), followed by cross-linking the alginate chains with calcium ions (CNW-Cu/ALGNa → CNW-Cu/ALGCa).
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