Flow and viscoelastic properties of xanthan gum solutions

Milas, M.; Rinaudo, Marguerite; Knipper, Magali; Schuppiser, Jean Luc

doi:10.1021/ma00211a018

Cited by 188 publications

(95 citation statements)

References 9 publications

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“…The shear rate dependence of xanthan gum and guar gum solutions was similar to that reported previously (Milas et al, 1990;Richardson et al, 1987). Shear thinning for CMC was slight, and the CMC solutions showed behavior similar to Newtonian fl ow in the range of concentrations examined.…”

Section: Resultssupporting

confidence: 87%

Relationship between Flow Properties of Thickener Solutions and Their Velocity through the Pharynx Measured by the Ultrasonic Pulse Doppler Method

Kumagai

Tashiro

Hasegawa

et al. 2009

FSTR

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The effect of viscosity µ of thickener solutions on their velocity through the human pharynx measured using the ultrasonic pulse Doppler method was investigated to develop an index for thickener solutions used as foods for dysphagic patients. The B-type viscometer determined an approximated value of viscosity at a selected shear rate γ · . The maximum velocity V max of water, which is often aspirated into trachea of patients with dysphagia, was about 3 times higher than that of yogurt, which is rarely aspirated. Moreover, the velocity spectra for water and thickener solutions of low concentration tended to be distributed over a wider range than those of yogurt and thickener solutions of high concentration. The maximum velocity V max of the thickener solutions approached that of yogurt as concentration increased. The maximum velocity V max correlated well with µ; the correlation coefficient at the shear rate of 10 s -1 was somewhat larger than those at the shear rate of 1 s -1 and 100 s -1 .

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Section: Resultssupporting

confidence: 87%

Relationship between Flow Properties of Thickener Solutions and Their Velocity through the Pharynx Measured by the Ultrasonic Pulse Doppler Method

Kumagai

Tashiro

Hasegawa

et al. 2009

FSTR

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“…The comparatively lower value of c*[] and larger slope in concentrated region for DRSPG-1 aqueous solutions could be due to the strong interactions between DRSPG-1 molecules by hydrogen bonds. 36 Some of the stiff hydrocolloids like welan, 48 xanthan, 49 and galactomannan 46 also show lower critical overlap values owing to interchain interactions. Interestingly, Enomoto et al 7 reported that the rigid rodlike SPG chains without DR treatment in aqueous solution start to overlap at c*[] ϭ 1, which is only slightly smaller than the present value of 1.2 for DRSPG-1 aqueous solution.…”

Section: Critical Overlap Parametermentioning

confidence: 99%

Rheological characterization of schizophyllan aqueous solutions after denaturation–renaturation treatment

2004

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Schizophyllan (SPG) with a molecular weight of 2.6x10(6), designated SPG-1, is denatured and then renatured at a concentration of 1.8 wt % by alkalization-neutralization. The prepared denatured-renatured samples (DRSPG-1) are diluted to various concentrations and equilibrated for 10 days before rheological and intrinsic viscosity measurements. When concentration (C(p)) is above 0.75 wt %, DRSPG-1 aqueous systems have weak gel-type rheological properties. However, for 0.28 wt %

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“…Galactomannan ± Polysaccharide Interaction. In industry, galactomannans capable of interacting with polysaccharides have a long tradition [108]. It was before 1816, when Merat catalogued the industrial value of gels in general.…”

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confidence: 99%

Seed Galactomannans: An Overview

Srivastava

Kapoor

2005

Chemistry & Biodiversity

272

146

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Seed galactomannans are vegetable, heterogeneous polysaccharides widely distributed in nature. Generally, they possess (1-->4)-linked D-mannopyranose (Man) main chains to which are attached (1-->6)-linked D-galactopyranosyl (Gal) units. The Man/Gal ratios differ from gum to gum, resulting in a change in structure, which, in turn, determines the various industrial applications of seed galactomannans. These materials are important in paper, textile, petroleum-drilling, pharmaceutics, food, cosmaceutics, and explosives industries. In this review, the biodiversified applicability of galactomannan gums is discussed, particularly with respect to structural aspects, properties, human consumption, and technical applications. Especially important is that the solution properties (rheological behaviour, viscosity, emulsifying tendency, etc.) of natural and chemically modified galactomannans can be tuned by interaction with other (carbohydrate-based) monomers or polymers.

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Flow and viscoelastic properties of xanthan gum solutions

Cited by 188 publications

References 9 publications

Relationship between Flow Properties of Thickener Solutions and Their Velocity through the Pharynx Measured by the Ultrasonic Pulse Doppler Method

Relationship between Flow Properties of Thickener Solutions and Their Velocity through the Pharynx Measured by the Ultrasonic Pulse Doppler Method

Rheological characterization of schizophyllan aqueous solutions after denaturation–renaturation treatment

Seed Galactomannans: An Overview

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