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Polysaccharide compositions

One composition, a variety of polysaccharide technology, applied in low viscosity polysaccharide composition and its preparation, high concentration field, can solve the problem of limiting viscosity forming ability and so on

Inactive Publication Date: 2012-04-18
CARGILL INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] To overcome this problem, the polysaccharides can be thinned (i.e., their molecular weight reduced), thereby limiting their viscosity-forming ability

Method used

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  • Polysaccharide compositions
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preparation example Construction

[0025] The preparation of this composition is made possible by the novel process which also forms part of the invention. Therefore, according to another aspect of the present invention, there is provided a process for the preparation of an aqueous composition of one or more polysaccharides, characterized in that it comprises adding one or more anionic polysaccharides and one or more hydrocolloids with 3 or lower pH solutions.

[0026] The terms "aqueous composition", "polysaccharide(s)" and "hydrocolloid(s)" are as defined above. Therefore, the anionic polysaccharide is preferably high molecular weight CMC, and the hydrocolloid is preferably xanthan gum. They are added to a solution, preferably an aqueous solution having a pH of 3 or less. This solution is usually obtained by mixing an acid with water.

[0027]The acid is preferably a strong acid. It is used to prevent the unmanageable increase in viscosity normally expected at high concentrations of polysaccharide. Examp...

Embodiment

[0041] Aqueous compositions according to the invention are prepared by mixing the following components with water in the following order:

[0042] 1.0.75% sulfuric acid (H 2 SO 4 )

[0043] 2.4% CMC (Finnfix 100000CP Kelco)

[0044] 3. 0.2% Biocide (Parmetol A28S)

[0045] 4. 0.35% xanthan gum (Satiaxane CX 2QD)

[0046] Up to 300 g of the entire composition was prepared in a 600 ml beaker.

[0047] method:

[0048] First, prepare a dilute solution of the acid in water with a mechanical mixer. At this point, slowly add CMC to the vortex of the mixture with vigorous stirring. Keep mixing for 15 minutes. Subsequently, the biocide and xanthan gum were added, and the composition was stirred for a further 15 minutes. This composition is prepared at room temperature.

[0049] The aqueous composition obtained according to the above formulation had a dry solids content of 4.5% by weight, a pH of about 2 and a Brookfield viscosity of about 900 mPas. After storage for 3 month...

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Abstract

An aqueous composition characterised in that it comprises one or more anionic polysaccharides suspended in an aqueous dispersion of one or more hydrocolloids.

Description

technical field [0001] The present invention relates to aqueous polysaccharide compositions. In particular, the present invention relates to stable, high concentration, low viscosity polysaccharide compositions and methods for their preparation. Background technique [0002] Polysaccharides are polymeric carbohydrates formed of repeating units linked by glycosidic bonds. Common examples include cellulose and starch. They are used in various forms in almost all sectors of industry. For example, they are used as thickeners in the production of food and beverages, as binders and / or fillers in pharmaceuticals and cleaning agents, as rheology modifiers in adhesives, in fabric sizing, etc. [0003] Polysaccharides are usually provided as dry powders or solutions. Solutions are more preferred because they are easy to handle and mix with other ingredients. Unfortunately, polysaccharides form highly viscous solutions when added to water. This problem is especially pronounced fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L1/28C08L5/00A23L29/20A23L29/262A23L29/269
CPCC08L5/00C08L1/286C08L2666/26
Inventor A·B·马孔杜D·S·西瓦斯利吉尔
Owner CARGILL INC