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Showing 1 to 20 of 241 for “"Alginate"”.
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Synthesis and applications of oligonucleotide-bound alginate hydrogels
… and RNA hybridization in oligonucleotide-bound alginate hydrogels, with applications in biosensing. Incorporating 2’-fluoro modifications significantly enhanced sensitivity, with 2’-F probes outperforming unmodified DNA and RNA in both detection signal and binding specificity. In mixtures with …
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Alginate gel in adhesion prevention. An experimental study
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The characterisation of alginate systems for biomedical applications
… on a range of polysaccharides, including sodium alginates (with varying mannuronic (M)/guluronic (G) acid ratio), pectin and sodium carboxymethylcellulose (CMC), for wound dressing applications. The samples were prepared as mixed salts such as sodium/calcium salts as Ca2+ ions are known to …
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EXPLORING THE MECHANISM OF ALGINATE ACETYLATION IN PSEUDOMONAS AERUGINOSA
… constitutively producing the exopolysaccharide alginate, composed of the uronic acids D-mannuronate and L-guluronate. This alginate production contributes significantly to virulence in the cystic fibrosis lung. Evidence suggests that the acetylation state of the mannuronate component of the …
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Alginate-based Hydrogels for Central Nervous System Tissue Regeneration
… biomaterial scaffolds. In this study we tested alginate as candidate biomaterial for neural tissue repair. We studied its ability to support mouse embryonic stem cells (mESCs) neural differentiation in vitro. We evaluated whether changes in its concentration or modifications with extracellular …
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Efficiencies of Mass Encapsulation in Alginate of Vegetative Explants
… encapsulation. Results showed that using 2.75% alginate with a concentration of 60 or 80 mM calcium chloride produced an alginate mass, or “cookie”, which was able to hold together during rinsing protocols. The rinsing study resulted with the potential to reduce rinse times from 2 three-minute …
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Characterization of alginate scaffolds using X-ray imaging techniques
Alginate is a popular biomaterial in tissue engineering. When crosslinked with calcium ions (Ca2+), alginate forms a hydrogel which provides necessary mechanical support as a scaffold. The material properties as well as the biological properties of alginate scaffold are of great importance. In this …
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The behavior of Fe3+ coordination in alginate-catechol networks
… have not been investigated extensively. Here, alginate was chemically modified with catechol attachments (Alg-C), and metal-coordinated with Fe3+ to yield a self-healing network with similar qualities to 4cPEG gels. Rheological measurements indicated that metal-coordination played a dominant …
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Fabrication of reinforced alginate fibers for cell based therapies
… of islet cells in immuno-protective alginate capsules has been shown to be promising as a long-term cure for Type I Diabetes. In this study, reinforced alginate fibers were fabricated as an alternative to alginate capsules for islet transplantation. Surgical thread was covered in …
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Removal of nitrate from contaminated groundwater by floating alginate beads
… by nanoparticles. In this study, sodium alginate powder was used to immobilize the NZVI and MNP to avoid postcontamination issues and agglomeration of nanoparticle. In the experimental studies, NZVIs were successfully embedded in multiple batches of lab synthesized alginate beads, which …
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Magnesium doped hydroxyapatite/sodium alginate biocomposite for bone implants application
Magnesium-doped Hydroxyapatite/Sodium alginate was successfully prepared by using precipitation method and this research was implement to enhance the physical, mechanical and biological properties of HA/SA. The properties of this materials are attributed to more cost-efficient, eco-friendly and …
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Architectural scale biomimetic composites based on chitosan and alginate hydrogels
… and Jorge Duro-Royo. Chitosan and alginate (among other natural polymers) are processed from shellfish waste and algae, respectively, and highly viscous solutions are extruded as a layer-by-layer printing material which dries into a solid, single material product with spatially …
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Micro/Nanoencapsulation of Proteins Within Alginate/Chitosan Matrix by Spray Drying
… The particles were produced by spray drying of alginate/protein solutions. The effect of spray drying operational parameters on particle properties such as recovery, residual activity and particle size was studied. Particle recovery depended on the inlet temperature of the drying air, whereas …
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ROLE OF CRC IN THE REGULATION OF ALGINATE IN PSEUDOMONAS AERUGINOSA
… mucoid strains often appear as a result of alginate overproduction. Such mucoid conversion is associated with the establishment of a chronic pulmonary infection. Alginate confers resistance to phagocytosis and has other pathogenic properties. The regulation of alginate production is complex …
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Magnesium doped calcium phosphate sodium alginate biocomposite for bone implant application
… on certain application only. Therefore, sodium alginate (SA), a natural polymer is combined with CaP and doped with magnesium (Mg) to improve the properties of the CaP. CaP/SA biocomposite was successfully prepared by using precipitation method with different ratio of CaP/SA (100/0, 99/1, 97/3, …
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A Comparison in Processing of Alginate Orthodontic Impressions by Commercial Labs
<p>Many orthodontists use commercial orthodontic laboratories for the processing of their impressions including preparation of the impression for pouring, model retrieval, final trim, and labeling. It was studied, by way of random sample survey, what materials and methods were most commonly …
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Inter-Grade and Inter-Batch Variability of Pharmaceutical-Grade Sodium Alginate
… polymeric excipients. Sodium alginate, a widely used polymeric excipient, was selected for evaluation using appropriate analytical methods and test conditions, especially rheological methods. The materials used were six different grades of sodium alginate and an additional ten …
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Alginate and laminarin degrading enzymes from Vibrio splendidus and Vibrio breoganii
… attractive target for industrial fermentation. Alginate and laminarin are two major components of brown seaweeds, comprising up to 60% of the dry weight. Alginate is a polysaccharide consisting of the 1,4-linked epimers α- L - guluronate and β- D -mannuronate. Laminarin is a storage glucan …
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Structural Insights into Modification and Export of the Pseudomonas aeruginosa Alginate Exopolysaccharide
… As a result, P. aeruginosa overproduces the alginate exopolysaccharide, leading to worse patient outcomes.In the cytoplasm, the process of alginate biosynthesis begins with nucleotide-sugar precursor formation by AlgA, AlgC, and AlgD. These precursors are polymerized by Alg8 in the inner …
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