Vadbennedsen1335

The morin released from the systems reduced the acidogenicity, microbial viability, concentration of insoluble extracellular polysaccharides and dry weight of biofilms, when compared to the control group. The findings of this study showed that the morin has antibiofilm activity against cariogenic microorganisms.Amine groups can play significant roles in modified chitosans for adsorption of heavy metal ions. A novel chitosan modified adsorbent (GMCS) grafted with lots of amine groups was synthesized by using glutaraldehyde as a crosslinker between chitosan and melamine. The structure and morphology of GMCS was characterized using FT-IR, 13C NMR, elemental analysis, XRD, TGA, SEM, BET and zeta potential analysis. The adsorption of GMCS and chitosan for different heavy metal ions was compared. The results indicated that GMCS had higher selectivity and uptake for adsorption of Pb2+ and Hg2+ than chitosan. Effects of some variables for uptakes of Pb2+ and Hg2+ on GMCS were studied. The kinetic and isothermal results showed that the adsorption followed the pseudo-second-order kinetic and Langmuir isotherm models. The adsorbent had highest adsorption capacity of 618.2 mg/g and 490.7 mg/g at pH 5 and 6 for Pb2+ and Hg2+, respectively. The adsorption was an endothermic and spontaneous chemical process. Five cycled experiments of adsorption-desorption showed that the adsorbent could be efficiently regenerated.Gelatine is a biocompatible and natural polymer with chemical properties similar to the extracellular matrix. However, it has poor mechanical properties and sensitive to enzymatic biodegradation that limits its application in 3D scaffold fabrication. Cellulose nanofibrous (CNF) offers biocompatibility, high surface area and excellent mechanical properties with slow in-vivo degradation. To fine tune their properties, CNF, and gelatine (CNF-GEL) were blended to form biocomposite aerogels. Epichlorohydrin (EPH) was incorporated into CNF-GEL as a chemical crosslinker to investigate its effect on the physiochemical, mechanical, and biological properties of the biocomposite aerogels both in-vitro and in-vivo. Regardless of the composition of the prepared aerogels, they possessed porosity of >90% with the pore size of 7-135 μm, which was confirmed in the morphological analysis. The presence of EPH improved the chemical interaction between CNF and gelatine, hence enhanced the compressive strength compared to uncrosslinked samples. The formulation of crosslinked CNF-GEL 9010 offered the highest compressive strength of 61.35 kPa. The in-vitro and in-vivo studies showed adequate cytocompatibility, cell viability and cell attachment in the optimal crosslinked formulation with tuned enzymatic degradation. Antimicrobial property was also achieved in the optimal scaffold by incorporating curcumin as an antimicrobial agent.Here, a simple and efficient strategy to produce porous and hydrophilic chitosan/cellulose sponge using surfactant and pore-forming agent is demonstrated. The preparation of composite sponge by LiOH/KOH/urea solvent system effectively solve the problems of uneven distribution of chitosan, poor softness and acid residue caused by soaking in chitosan acid solution. The obtained chitosan/cellulose sponges exhibit high water absorption capacity and rapid shape recoverability, as well as good mechanical properties. Effective inhibitory on Escherichia coli, Staphylococcus aureus, and Pseudomonas aeruginosa are particularly proved. Besides, the result of the dynamic whole blood clotting time indicated that the chitosan/cellulose composite sponge has better coagulation ability than those of traditional gauze and gelatin sponge. Animal experiment further showed that rapid hemostasis within 34 s can be reached with the composite sponge. Better biocompatibility of the composite sponge is proved by the results of hemocompatibility and cytotoxicity, indicating an excellent candidate for rapid hemostasis in massive haemorrhage.Green biocomposites based on corn starch plasticized with isosorbide and glycerol and filled with microcrystalline cellulose (MCC) were processed. The structural interactions, dynamomechanical properties, water absorption, and soil biodegradability were investigated by different techniques considering the effect of the type and amount of plasticizer and the MCC addition. The changes along the time of the structural interactions and the dynamomechanical properties of these materials and the influence of the retrogradation phenomenon were also studied. The use of isosorbide as plasticizer instead of glycerol improved the stiffness, the water absorption and the biodegradation rate of thermoplastic starch (TPS). Moreover, no evidence of retrogradation for isosorbide was observed. An isosorbide content of 35% and the addition of MCC filler enhanced in a greater extent these properties with a complete biodegradability in 7 month. These green biocomposites can be an alternative for food packaging applications.Basil seeds are widely cultivated throughout the world because of their extensive applications in various fields of life. The Basil seeds mucilage (BSM) exhibits remarkable physical and chemical properties like high water absorbing capacity, emulsifying, and stabilizing properties. The extraction of this mucilage from the seed surface has always been done by physical and chemical methods, which has certain drawbacks. Here, we report for the first time a chemical method for the effective extraction of this mucilage using ionic liquids (ILs); the green solvents. Pyridinium chloride based ILs were investigated for the effective extraction of mucilage and the process was optimized for various variables i.e. time, temperature, basil seed loading, co-solvents, anti-solvents. 3BDO molecular weight The extraction yield (up to 25% w/w of mucilage per basil seeds dry weight) was obtained at optimum conditions. Extracted mucilage was characterized by analytical techniques. The extracted BSM was used to prepare AuNps/BSM nanocomposite by stabilizing the gold nanoparticles. The AuNps/BSM nanocomposite was applied for the catalytic degradation of dyes (congo red; 12 min, methyl orange; 4 min, whereas 4-nitrophenol; 6 min).