Hydrogels pose interesting features for cartilage regeneration strategies, such as the option for injectability and in situ gelation resulting in optimal filling of defects. We aimed to study different hydrogels for their capability to support chondrogenesis of human bone marrow-derived mesenchymal stem cells (hBMSCs). hBMSCs were encapsulated in alginate, alginate with hyaluronic acid (alginat...

Oak sawdust (OSD), furniture industrial waste was chemically treated with 0.1N NaOH to give hydrolyzed oak sawdust (HOSD) which was immobilized on alginate biopolymer. Hydrolyzed oak sawdust composite (HOSDC) was utilized as low-cost adsorbent to remove basic dye (methylene blue, MB) from aqueous solution. HOSD and HOSDC were characterized by using Scanning electron microscope (SEM), thermo gra...

In this study, polysaccharides of marine origin (agar, alginate and κ-carrageenan) were used to embed nutrients to fabricate biocomposites to be employed in animal feeding. The consistency of biocomposites in water has been evaluated up to 14 days, by several methods: swelling, nutrient release and granulometric analysis. Biocomposites were produced with varying percentages of nutrients (5%-25%...

This paper reports a novel formation method of monodisperse calcium alginate microbeads from water-in-oil-in-water (W/O/W) droplets with an ultra-thin oil phase layer. W/O/W droplets containing sodium alginate in an internal aqueous phase were formed as a template of calcium alginate microbeads using a microfluidic device. The ultra-thin oil phase layer of the W/O/W droplets was ruptured by an ...

background: alginate is a linear polysaccharide consisting of guluronate (polyg) and mannuronate (polym) subunits. methods: in the initial screening of alginate-degrading bacteria from soil, 10 isolates were able to grow on minimal medium containing alginate. the optimization of cell growth and alginate lyase (algl) production was carried out by the addition of 0.8% alginate and 0.2-0.3 m nacl ...

Si-based anodes in lithium ion batteries (LIBs) have exceptionally high theoretical capacity, but the use of a Si-based anode in LIBs is problematic because the charging-discharging process can fracture the Si particles. Alginate and its derivatives show promise as Si particle binders in the anode. We show that calcium-mediated "egg-box" electrostatic cross-linking of alginate improves toughnes...

We present unique molding/bonding processes to fabricate microstructured Ca-alginate hydrogel plates. We employed propylene glycol alginate (PGA), an ester derivative of alginate, which suppresses the shrinkage of sodium alginate (NaA) during the gelation process, and prepared microstructured hydrogel plates via molding. Also, a bonding procedure utilizing polycation coating is presented to obt...

We demonstrated that a 2% suspension of Pseudomonas aeruginosa alginate completely blocked the diffusion of gentamicin and tobramycin, but not that of carbenicillin, illustrating how alginate production can help protect P. aeruginosa growing within alginate microcolonies in patients with cystic fibrosis (CF) from the effects of aminoglycosides. This aminoglycoside diffusion barrier was degraded...

Background: Achievement the new biocompatible wound dressing is one of the attractive areas of research. Objective: The present study attempts to examine the healing effects of the alginate - Persian mannaplant extract in the induced rat wounds. Methods: After culturing and detecting of the Pseudomonas aeroginosa strains by phenotyping and genotyping methods, the produced alginate was extra...