Polysaccharide suspension, method for its preparation, and use thereof

Patent metadata

Field	Value
Publication number	US-11718734-B2
Application number	US-202117407681-A
Country	US
Kind code	B2
Filing date	Aug 20, 2021
Priority date	Feb 6, 2015
Publication date	Aug 8, 2023
Grant date	Aug 8, 2023

Abstract

The present invention relates to a novel stable colloidal polysaccharide suspension containing α(1→3)-glucan, a cost-effective method for its preparation, and possible uses of these polysaccharide suspensions.

First claim

What is claimed is:

1. A product comprising a phase-stable, colloidal suspension of a polysaccharide that comprises α(1→3)-glucan, wherein the α(1→3)-glucan content of the polysaccharide is between 80% and 100% by weight, and wherein the product is a cosmetic, foodstuff, or pharmaceutical.

2. The product of claim 1 , wherein the polysaccharide was (i) never dried and (ii) not dissolved during its preparation, the suspension was prepared from a water-containing cake having a content of the polysaccharide of between 15% and 45% by weight, and the concentration of the polysaccharide in the suspension is between 1.0% and 20% by weight.

3. The product of claim 2 , wherein the cake is a press cake.

4. The product of claim 1 , wherein at least 90% of the α(1→3)-glucan consists of hexose units and at least 50% of the hexose units are linked via α(1→3)-glycosidic bonds.

5. The product of claim 1 , wherein all of the glycosidic bonds of the α(1→3)-glucan are α(1→3)-glycosidic bonds.

6. The product of claim 1 , wherein the weight-average degree of polymerization of the α(1→3)-glucan is between 200 and 2000.

7. The product of claim 1 , wherein the product further comprises a pigment.

8. The product of claim 1 , wherein the product further comprises titanium oxide.

9. The product of claim 1 , wherein the product further comprises polyethylene.

10. The product of claim 1 , wherein the product further comprises polypropylene.

11. The product of claim 1 , wherein the product further comprises polyester.

12. The product of claim 1 , wherein the product further comprises latex.

13. The product of claim 1 , wherein the product further comprises barium sulfate, an ion exchanger, activated carbon, or a polymeric superabsorbent.

14. The product of claim 1 , wherein the product further comprises an additive in the amount of 1% to 200% of the weight of the polysaccharide.

15. The product of claim 1 , wherein the product is the cosmetic.

16. The product of claim 2 , wherein the product is the cosmetic.

17. The product of claim 1 , wherein the product is the foodstuff.

18. The product of claim 2 , wherein the product is the foodstuff.

19. The product of claim 1 , wherein the product is the pharmaceutical.

20. The product of claim 2 , wherein the product is the pharmaceutical.

Assignees

• Nutrition & Biosciences Usa 4 Inc

Inventors

• Opietnik Martina
• Männer Johann
• Hager Markus
• Redlinger Sigrid
• Kroner Gert

Classifications

• C08L5/00 Primary

  Compositions of polysaccharides or of their derivatives not provided for in groups C08L1/00 or C08L3/00 · CPC title

• C08B37/0009 Primary

  alpha-D-Glucans, e.g. polydextrose, alternan, glycogen; (alpha-1,4)(alpha-1,6)-D-Glucans; (alpha-1,3)(alpha-1,4)-D-Glucans, e.g. isolichenan or nigeran; (alpha-1,4)-D-Glucans; (alpha-1,3)-D-Glucans, e.g. pseudonigeran; Derivatives thereof · CPC title

• C08J3/05

  from solid polymers · CPC title

• C09D105/00

  Coating compositions based on polysaccharides or on their derivatives, not provided for in groups C09D101/00 or C09D103/00 · CPC title

• C08J2305/00

  Characterised by the use of polysaccharides or of their derivatives not provided for in groups C08J2301/00 or C08J2303/00 · CPC title