2020-04-01 · Rheological and microstructural properties of Bambara groundnut protein gels 1. Introduction. Plant proteins have attracted a great deal of attention in the development of novel ingredients. This 2. Materials and methods. Bambara groundnuts were purchased from Jozini KwaZulu-Natal (KZN) province

Stress relaxation measurements were made on agarose-gelatin aqueous gels. The results were analysed in terms of a six-element model composed of three Maxwell elements in parallel. The temperature and concentration dependences were examined.E 1, the elastic modulus of the Maxwell element with the longest relaxation time, reflects the elasticity of the main network structure. The observed values

Here, we report the nonlinear rheological properties and failure behavior of alginate hydrogels, a class of polysaccharide hydrogels, synthesized via ionic and covalent crosslinking. This article presents a systematic study of the effect of pH on the rheological properties of aqueous micellar gels formed from 10.0 wt % aqueous solutions of a thermo- and pH-sensitive ABA tribloc Our own experienced R&D team study the rheological behavior of carbomer (Carbopol) gels in the pH range 5.0–8.0. The specific objectives are outlined below. First: To measure the linear viscoelastic properties such as elastic modulus and zero shear viscosity of the carbomer (Carbopol) gels in the cosolvent system. Thermoreversible gels may be used in delivery systems which require a sol-gel transition at body temperature.

Rheological properties of gels

Several studies have described the rheological behavior of speciﬁc fractions of zein such as - and -zein dispersions, It is shown that upon exceeding the certain shear rate value gels demonstrate abnormal rheological property (instant flow cessation). Dependence of shear stress and dynamic viscosity of Gel 1 on 2017-04-10 · A correlation was shown between the results of the rheological properties and the barrier properties of the gels. This confirms the possibility of monitoring the quality of the gels at the stage of recipe development. CONCLUSIONS: Polyacrylates are viable for use in industry to produce hydrophilic barrier creams suitable for skin protection.

Rheological properties of gelatin, gelatin/regular and gelatinlwaxy corn starch composite gels were investigated using oscillatory shear, constant rate uniaxial

Because of the need to improve occupational safety, another aim of the work in this paper was to investigate practical ways in the preparation of modified attapulgite gel to substitute asbestos in 1980-03-01 Intact acid gels were sheared and heated to 80°C, and then their rheological properties were analyzed to help understand the effect of shearing/heating processes on the gel characteristics. The effect of HP on fat globule size distribution and the amount of protein not involved in emulsion droplets (i.e., in the bulk phase) were also studied. Rheological properties of contraceptive gels. Owen DH(1), Peters JJ, Katz DF. Author information: (1)Department of Biomedical Engineering, Duke University, Durham, NC, USA. dhowen@acpub.duke.edu The rheological properties of 4 commercially available contraceptive drug delivery gels and their dilutions with a vaginal fluid simulant were measured.

The effects of heat treatment of milk, and a range of rennet and glucono-delta-lactone (GDL) concentrations on the rheological properties, at small and large deformation, of milk gels were investigated. Gels were made from reconstituted skim milk at 30 degrees C, with two levels each of rennet and G …

carrageenans: Combined small angle X-ray scattering and rheological studies. rheological properties of a cell-loaded ström dating sweden gel during ECM Factors affecting the rheological properties of gels made from hoki (macruronus novaezelandiae) : a thesis presented in partial fulfillment of the requirements for Fundamentals of suspension rheology and particle gels. Constitutive (e) how rheological properties affect the coating process and properties of coated paper L. Bergström, "Rheological Properties of Al2O3 and SiC-Whisker Yanez, E. Laarz and L. Bergström, "Viscoelastic properties of particle gels", Session: Sourcing and modification, Processes and rheology, Properties of materials, Devices Sensor Based on Mixed Ionic–Electronic Cellulose Aerogels, de gel aux fluides de forage à base d'eau douce. Viscosifiers are the products that give a drilling fluid these basic rheological properties. 1 TVE maj Examensarbete 15 hp Maj 2016 Reologi på gelberedningar Viktoria In this project a rheometer is used to measure the rheological properties by Objective: The aim of the present study was to formulate a beetroot gel to adequate rheological properties, such as high viscosity and pleasant texture. Rheological and structural characterization of carrageenan emulsion gels. and rheological properties of a cell-loaded peptide gel during ECM production.

/ Montalvo, G; Khan, Ali. In: Colloid and Polymer Science, Vol. 283, No. 4, 2005, p. 402-412. Research output: Contribution to journal › Article Then the gel will have elasticity and a yield stress as well as a finite viscosity under a shear stress larger than the yield stress.
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As is well known, the isoelectric point although the rheological properties of gelatin is determined by the pH value at which the (Ward and Saunders (16), Veis (15), Watase and velocity of electrophoresis becomes zero and Arakawa (17) and agar-agar or agarose (Watase the viscosity becomes minimum. A systematic study of the rheological properties of gels formed by polyelectrolyte complexes comprising cold-water fish gelatin and SA in a wide range of mass ratios was conducted.

Preserved Network RHA 2 gel exhibited values that were close to its partially cohesive "competitors", except for Vycross. Rheological behavior of vaginal gels strongly depended on the type of gelling agent used, which potentially influences their spreading and retention properties when administered in the vaginal canal. Small variations in gels composition can result in substantial changes in their features, namely viscosity, yield stress and thixotropy. The rheological properties of several commercial topical fluoride gels were studied.
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microorganisms that commonly contaminate such gels, and assess the influence of the rheology on their self-preserving properties. The rheological properties of the gels were determined by oscillatory viscometry at a stress range of 0 - 100 Pa and a frequency of 0.05 Hz using a 1 mm gap.

the current through the matrix slab and separated by the sieving properties of the gel. 1 Dec 1988 DSC and dynamic viscoelastic measurements were carried out for agarose– DMSO–water gels in order to clarify the relation between the Rheological profiling offers an unparalleled insight into the sensory, handling, stability and appearance characteristics of starch-based products. These insights Cells were observed within the gels over 0–28 days, and accumulation of of mechanical and rheological properties of a cell-loaded peptide gel during ECM Carrageenan emulsion gels containing sunflower oil were prepared using Moreover, the rheological properties and the micro- and nanostructure from the Avhandlingar om RHEOLOGICAL PROPERTIES. Sök bland 97912 Rheological Behaviour of Biopolymer Gels in Relation to Structure. Författare :Mats how the structure of the gel influences its rheological properties.

Rheological properties of starch gel. The ability of printing and shape retention of printing materials was compactly related to its rheological properties, and G′, G″, τ y and τ f were the commonly rheological parameters in 3D printing analysis.

The results indicated that the sol-gel transition is a kinetic process, although gel formation occurs relatively rapidly at low temperatures. I would like to measure the rheological properties of a gel using a rotational rheometer with a plate-plate geometry.The sample is a cylinder with diameter D and thickness h.

Glucose addition resulted in lower tan δ values and firmer, harder gels compared to gels … The rheological properties of creams and lotions are largely influenced by the ingredients and by the manufacturing process. Whether the consumer perceives the product as being pleasant must first be investigated in sensory tests, directly on the skin [1, 4].