Methods of concentrating phospholipids

Patent metadata

Field	Value
Publication number	US-11425915-B2
Application number	US-201815969476-A
Country	US
Kind code	B2
Filing date	May 2, 2018
Priority date	May 2, 2018
Publication date	Aug 30, 2022
Grant date	Aug 30, 2022

Abstract

Phospholipid concentration methods involve use of a dairy composition, such as buttermilk or butter serum, as a starting material. The dairy composition is subjected to a first ultrafiltration, yielding a first permeate and a first retentate. The first retentate is treated with carbon dioxide and subjected to microfiltration, yielding a second permeate and a second retentate. The second retentate is treated with carbon dioxide and subjected to a second ultrafiltration, yielding a third permeate and a third retentate. The third retentate includes at least 30 wt % phospholipids.

First claim

What is claimed is:

1. A method of concentrating phospholipids, the method comprising:
subjecting a dairy composition comprising butter serum or buttermilk to a first ultrafiltration, wherein the first ultrafiltration yields a first permeate and a first retentate;
treating the first retentate with carbon dioxide;
subjecting the first retentate to microfiltration, wherein the microfiltration yields a second permeate and a second retentate;
treating the second retentate with carbon dioxide;
subjecting the second retentate to a second ultrafiltration, wherein the second ultrafiltration yields a third permeate and a third retentate; and
collecting the third retentate, wherein the third retentate comprises at least about 30 wt % phospholipids.

2. The method of claim 1 , further comprising spray drying the third retentate to yield a powder composition.

3. The method of claim 1 , wherein the first retentate is treated with carbon dioxide during microfiltration.

4. The method of claim 1 , wherein the second retentate is treated with carbon dioxide during the second ultrafiltration.

5. The method of claim 1 , wherein the first ultrafiltration is performed using a first ultrafiltration membrane configured to retain molecules having a molecular weight greater than about 10 kDa.

6. The method of claim 1 , wherein treating the first retentate with carbon dioxide lowers the pH of the first retentate to a range of about 5.2 to about 5.4.

7. The method of claim 1 , wherein the second retentate and the third retentate have a pH ranging from about 5.2 to about 5.4.

8. The method of claim 1 , further comprising adding water to the first retentate or the second retentate.

Assignees

• Land Olakes Inc

Inventors

• Gnanasambandam Ravin
• Patel Hasmukh

Classifications

• A23L2/00

  Non-alcoholic beverages; Dry compositions or concentrates therefor (soup concentrates A23L23/10); Preparation or treatment thereof (preparation of non-alcoholic beverages by removal of alcohol C12H3/00) · CPC title

• A23L33/115

  Fatty acids or derivatives thereof; Fats or oils · CPC title

• A23C9/142

  by dialysis, reverse osmosis or ultrafiltration (A23C9/144 takes precedence) · CPC title

• B01D61/149

  Multistep processes comprising different kinds of membrane processes selected from ultrafiltration or microfiltration · CPC title

• B01D61/147

  Microfiltration · CPC title