نتایج جستجو برای: dextran
تعداد نتایج: 9812 فیلتر نتایج به سال:
In this paper, polymer grafted nickel-doped iron oxide nanoparticles are fabricated via an easy, one-step and fast electrochemical procedure. In the deposition experiments, iron(II) chloride hexahydrate, iron(III) nitrate nonahydrate, nickel chloride hexahydrate, and dextran were used as the bath composition. Dextran grafted nickel-doped iron oxides (DEX/Ni-SPIOs) were synthesized with applying...
The kinetic mechanism of dextransucrase was studied using the Streptococcus mutans enzyme purified by affinity chromatography to a specific activity of 36.9 mumol/min/mg of enzyme. In addition to dextran synthesis, the enzyme catalyzed sucrose hydrolysis and isotope exchange between fructose and sucrose. The rates of sucrose hydrolysis and dextran synthesis were partitioned as a function of dex...
Intravenous iron preparations are typically classified as non-dextran-based or dextran/dextran-based complexes. The carbohydrate shell for each of these preparations is unique and is key in determining the various physicochemical properties, the metabolic pathway, and the immunogenicity of the iron-carbohydrate complex. As intravenous dextran can cause severe, antibody-mediated dextran-induced ...
We have compared the splenic responses following immunization with the T cell-independent (TI)-2 antigen native dextran B512 and with a thymus-dependent (TD) protein-dextran conjugate. Interestingly, primary immunization with native dextran induced germinal center (GC) formation in the spleen to the same extent as the protein-dextran conjugate. The GC were antigen-specific as characterized by t...
Occurrence of surplus bread (SB) is common in the baking industry. Edible can be utilized as a new dough ingredient; however, it creates technological challenges that affect quality bread. In this study, interactions SB with macromolecules were studied gluten-starch model system and subsequent Moreover, dextran or maltosyl-isomalto-oligosaccharides (MIMO) produced by dextransucrase preparation,...
Different isolated strains of Leuconostoc mesenteroides produce dextran compared with that of L. mesenteroides NRRL B-512 F. Among nine newly isolated strains, strains PCSIR-4 and PCSIR-9 produced dextran of different quality. Using these two newly isolated strains, the development of dextran coincided closely with the disappearance of sucrose. The yield of dextran increased during growth and m...
The pro-inflammatory microenvironment that contributes to atherosclerotic plaque progression is sustained by M1 macrophages. Metabolic reprogramming toward heightened glycolysis accompanies macrophage polarization, with approaches aimed at lessening glycolytic metabolism in macrophages standing impact disease progression. objective decrease the inflammatory response lesions inducing favorable m...
The interaction between Streptococcus mutans dextransucrase (EC 2.4.1.5) and high-molecular-weight dextran was studied in both the presence and absence of substrate sucrose. Equivalent weight-percent solutions of primer dextrans that differed 200-fold in molecular weight were found to be equally efficient in priming new dextran synthesis. Sodium borohydride reduction of dextran had no effect on...
pended upon the quantity of the maltose and the dextran added as well as the average molecular weight of the dextran added. The combination of all three factors yielded dextran with a relative viscosity as low as 1.6. The decrease in viscosity occurred in an orderly manner. For the recovery of dextran of clinical size, only the addition of dextran was of any value. A yield of 34.6 per cent of t...
Rheological tests performed under conditions relevant to those experienced during proof and oven rise are necessary for understanding the mechanisms of dextran addition on wheat dough baking performance. This study evaluated effect a high molecular weight (Mw) dextran, produced in situ by Weissella confusa A16 or externally added, rheological properties including, (i) proofing behavior using ma...
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