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...

In this paper, we demonstrate biphasic microfluidic droplets with broadly tunable internal structures, from simple near-equilibrium drop-in-drop morphologies to complex yet uniform non-equilibrium steady-state structures. The droplets contain an aqueous mixture of poly(ethylene glycol) (PEG) and dextran and are dispensed into an immiscible oil in a microfluidic T-junction device. Above a certai...

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...

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...

The activity of the antiviral protein induced by various ratios of poly rI.rC and diethylaminoethyl (DEAE)-dextran was studied. It was found that, when large doses of poly rI.rC were used, very little viral interference was observed. This effect was initially attributed to the cells being refractory for production of antiviral protein. Subsequent experiments offered alternative explanations sug...

Ample evidence has accumulated indicating that the information for forming microtubule lattice lies in the tubulin molecule. There are varieties of agents such as Mg2+ [l-3], dimethyl sulfoxide [4], polyethylene glycol, DEAE-dextran [S] and basic proteins [6-91 which could induce microtubule assembly in a purified preparation of tubulin. However, it appears that in those assembly conditions whe...

Under a given set o f conditions (including the relative concentrations of the macromolecular components), the polymer was said to interact with PGM if the components in the mixture sedimented with a larger sedimentation coefficient than the controls after concentration effects had been taken into account (Table l a ) . PGM concentrations were kept fixed (2.0 mg/ml) and the DEAE-dextran concent...

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,...