Protein particles with improved whiteness

Patent metadata

Field	Value
Publication number	US-2025066694-A1
Application number	US-202218724953-A
Country	US
Kind code	A1
Filing date	Dec 20, 2022
Priority date	Dec 30, 2021
Publication date	Feb 27, 2025
Grant date	—

Abstract

The invention provides protein particles having improved whiteness after storage, and powder detergents comprising the particles.

First claim

1 . A particle comprising:
(a) a protein; (b) a salt of sulfite, bisulfite, or metabisulfite; and (c) (i) a mono- or disaccharide which is a reducing sugar or can be degraded to a reducing sugar; or
(ii) less than 0.5% w/w of titanium dioxide.

2 . The particle of claim 1 , which comprises the mono- or disaccharide in an amount of more than 0.01% w/w.

3 . The particle of claim 1 , which comprises the salt of sulfite, bisulfite, or metabisulfite in an amount of more than 0.01% w/w.

4 . The particle of claim 1 , which comprises the protein in an amount of 0.1-25% w/w.

5 . The particle of claim 1 , wherein the protein is produced by fermentation.

6 . The particle of claim 1 , wherein the protein and the salt of sulfite, bisulfite, or metabisulfite are homogenously mixed in a continuous matrix.

7 . The particle of claim 6 , which comprises a core and a coating, and the core comprises the continuous matrix.

8 . The particle of claim 1 , wherein the protein is an enzyme, and the amount of protein is active enzyme protein.

9 . The particle of claim 1 , wherein the salt of sulfite, bisulfite, or metabisulfite is a salt of metabisulfite.

10 . The particle of claim 1 , which comprises than 0.1% w/w of titanium dioxide.

11 . The particle of claim 1 , which exhibits reduced loss of whiteness after storage.

12 . A method for preparing a particle of claim 1 , comprising
(a) preparing a homogenous mixture of a protein produced by fermentation, and a salt of sulfite, bisulfite, or metabisulfite; and (b) preparing a particle from the homogenous mixture.

13 . The method of claim 12 , wherein the protein is recovered from a fermentation liquid comprising a mono- or disaccharide which is a reducing sugar or can be degraded to a reducing sugar.

14 . The method of claim 12 , wherein the fermentation liquid further comprises invertase and/or glucosidase.

15 . A method for improving the whiteness after storage of a protein particle, comprising
(a) preparing the particle of claim 1 ; and (b) storing the particle for more than 2 weeks.

16 . A powder detergent comprising a surfactant and a builder, and the particle of claim 1 .

17 . The particle of claim 1 , which comprises (i) a mono- or disaccharide selected from glucose, fructose, lactose, maltose, and sucrose.

18 . The particle of claim 1 , which comprises the mono- or disaccharide in an amount of more than 0.05% w/w.

19 . The particle of claim 1 , which comprises the salt of sulfite, bisulfite, or metabisulfite in an amount of more than 0.05% w/w.

20 . The particle of claim 1 , wherein the fermentation liquid comprises invertase and/or glucosidase.

Assignees

• Novozymes As

Inventors

• Simonsen Ole
• Hellstrand Erilk
• Moller Kristoffer Hauberg
• Shang Lei

Classifications

• C12N9/2468

  acting on beta-galactose-glycoside bonds, e.g. carrageenases (3.2.1.83; 3.2.1.157); beta-agarase (3.2.1.81) · CPC title

• C11D3/38672 Primary

  Granulated or coated enzymes · CPC title

• C11D3/38645

  containing cellulase · CPC title

• C11D3/38627

  containing lipase · CPC title

• C11D3/222

  Natural or synthetic polysaccharides, e.g. cellulose, starch, gum, alginic acid or cyclodextrin · CPC title