IP Library › Granted Patent US 11,718,734
Granted Patent B2
US 11,718,734 · App. 17/407,681 · Granted Aug 8, 2023

Polysaccharide suspension, method for its preparation, and use thereof

Inventors: Martina Opietnik (Vöcklabruck, AT); Johann Männer (Weyregg, AT); Markus Hager (Attnang-Puchheim, AT); Sigrid Redlinger (Lenzing, AT); Gert Kroner (Seewalchen, AT)
Assignee: NUTRITION & BIOSCIENCES USA 4, INC.
C08L5/00C08B37/0009C08J3/05C09D105/00C08J2305/00C08L2201/54C08L2203/02C08L2203/16
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Quick Facts
Patent No.
US 11,718,734
App. No.
17/407,681
Granted
Aug 8, 2023
Kind
B2
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.

Claims (20)

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.