Protein concentrates from oil seeds and methods of producing the same

Patent metadata

Field	Value
Publication number	US-11737474-B2
Application number	US-201716076052-A
Country	US
Kind code	B2
Filing date	Feb 8, 2017
Priority date	Feb 8, 2016
Publication date	Aug 29, 2023
Grant date	Aug 29, 2023

Abstract

A method of preparing a protein concentrate and protein concentrate compositions are described. The method relates to combining an aqueous process stream from a grain milling process with an oil seed material to form a slurry, steeping the slurry, and isolating a protein concentrate from the slurry. In one embodiment, the aqueous process stream comprises a soluble protein. In some embodiments, the method includes additional steps such as enzymatic treatment, washing of the isolated protein concentrate, and drying the protein concentrate.

First claim

The invention claimed is:

1. A method of preparing a protein concentrate, the method comprising:
combining a steeping media and an oil seed material to provide a slurry, wherein the steeping media comprises a soluble protein having a different protein and amino acid profile than the oil seed material prior to combining with the oil seed material;
optionally adjusting the pH of the slurry;
optionally adding one or more enzymes to the steeping media or the slurry;
steeping the slurry;
isolating a protein concentrate from the slurry,
washing the isolated protein concentrate with a wash media one or more times, and
drying the isolated protein concentrate,
wherein the oil seed material is selected from the group consisting of a soy flake, a soy flour, a soy meal, and combinations thereof.

2. The method of claim 1 , wherein the soy flake, the soy flour, or the soy meal is defatted.

3. The method of claim 1 , wherein the steeping media comprises water.

4. The method of claim 1 , wherein the steeping media is selected from the group consisting of a corn steepwater stream, a wheat steepwater stream, a pulse steepwater stream, and combinations thereof.

5. The method of claim 1 , wherein the steeping media is a recycled wash media from a protein concentrate preparation process.

6. The method of claim 1 , wherein the steeping media has a solids content of less than about 20% dry solids by weight.

7. The method of claim 1 , wherein the wash media is water.

8. The method of claim 1 , wherein the wash media is selected from the group consisting of a corn steepwater stream, a soy steepwater stream, a wheat steepwater stream, a pulse steepwater stream, and combinations thereof.

9. The method of claim 1 , wherein the pH of the slurry or steeping media is adjusted to the range of about 3.8 to 4.2.

10. The method of claim 1 , wherein the pH of the wash media is adjusted to the range of about 3.8 to 4.2.

11. The method of claim 1 , wherein the pH of the slurry during the steeping step is maintained in the range of about 3.8 to 4.2.

12. The method of claim 1 , wherein the washing step comprises a wash volume ratio of about 1:1 volume of wash media to volume of isolated protein concentrate.

13. The method of claim 1 , wherein the one or more enzymes is selected from the group consisting of a glucanse, a xylanase, a cellulase, a hemicellulase, an amylase, an alpha-galactosidase, a hemicellulase, a pectinase, a polygalacturonase, a phytase, and a protease, and combinations thereof.

14. The method of claim 1 , wherein the protein concentrate comprises at least about 60% protein on a dry weight basis.

15. The method of claim 1 , wherein the protein concentrate has a Trypsin Inhibitor content of less than 6 TIU/mg.

16. The method of claim 1 , wherein the protein concentrate has less than 0.2% Stachyose.

17. The method of claim 1 , wherein the protein concentrate has less than 0.2% Raffinose.

18. The method of claim 1 , wherein the protein concentrate has less than 2% Phytic Acid.

19. The method of claim 1 , further comprising co-drying the protein concentrate with a corn protein concentrate.

Assignees

• Cargill Inc

Inventors

• Bell Eric
• Marasco Erin Kathleen
• Mertz Keith John
• Sarang Sanjay
• Yang Ping

Classifications

• A23J1/14 Primary

  from leguminous or other vegetable seeds; from press-cake or oil-bearing seeds · CPC title

• A23J1/16

  from waste water of starch-manufacturing plant or like wastes · CPC title

• A23J3/16

  from soybean · CPC title

• A23J3/14

  Vegetable proteins · CPC title

• A23K10/30

  from material of plant origin, e.g. roots, seeds or hay; from material of fungal origin, e.g. mushrooms (obtained by microbiological or biochemical processes, e.g. using yeasts or enzymes, A23K10/10) · CPC title