Rheological properties of welan gum in aqueous media.

Rheological properties of lesquerella gum fractions recovered by aqueous extraction

Lesquerella fendleri seeds contain a cross-linked carbohydrate gum with viscoelastic properties that may be used for industrial and edible applications. Laboratory studies compared the rheological behavior of gum isolates obtained from whole seed, defatted hull, and defatted meal fractions. Gum yields and rheological properties were determined for gum isolates from each of these fractions. All ...

Physicochemical Properties and Rheological Behaviour of Ficus glumosa Gum in Aqueous Solution

The physicochemical properties, cationic composition and rheological behaviour of exudates from Ficus glumosa were investigated. The gum was found to be mild acidic, ionic and soluble in water but insoluble in organic solvents. The trend for the decreasing concentration of elements determined in the gum sample is Mg > Ca > Mn > Zn > Fe > Ni > Cu > Cd > Pb. Rheological properties of the gums hav...

Rheological properties and surface tension of Acacia tortuosa gum exudate aqueous dispersions

Steady shear flow properties of Acacia tortuosa gum aqueous dispersions at different concentrations (15–40% w/v) were studied at 20 C using a controlled shear rate Couette rheometer and Mooney–Ewart sensor systems. Flow curves showed shear thinning non-Newtonian behaviour with a tendency to a Newtonian plateau at high-shear rate. The results obtained fitted the Sisko model very well. The influe...

rheological properties and surface tension of some natural gum aqueous dispersions commonly used in pharmaceutical industries

Effect of Irradiated Gum Tragacanth on Rheological Properties of Oil in Water Emulsion

Background: Emulsions are thermodynamically unstable systems that can be kinetically stable by adding substances known as emulsifiers and/or thickening agents. By respect to the functional properties of gum tragacanth (GT), and its breakage probability during irradiation treatment, the major aim of this study was to investigate the stability of oil in water emulsion in the presence of different...