DEMINERALIZED WHEY POWDERS

• US 20170280738A1
• Filed: 03/29/2017
• Published: 10/05/2017
• Est. Priority Date: 03/30/2016
• Status: Active Grant

• Current Assignee: DMK Deustsches Milchkontor GMBH
• Original Assignee: DMK Deustsches Milchkontor GMBH
• Inventors: Dring, Sven-Rainer, Oehlckers, Thorben, Wiegers, Torben
• Granted Patent: US 10,638,772 B2
• Time in Patent Office: Days
• CPC Class Codes: A23C 21/00 Whey; Whey preparations concentration, evaporation or drying A23C1/00; preservation of milk or milk preparations A23C3/00; milk preparations, milk powder or milk powder preparations in which the chemical composition of the milk is modified by non-chemical treatment A23C9/14
• CPC Class Codes: A23C 9/1422 by ultrafiltration, microfiltration or diafiltration of milk, e.g. for separating protein and lactose; Treatment of the UF permeate
• CPC Class Codes: A23C 9/1425 by ultrafiltration, microfiltration or diafiltration of whey, e.g. treatment of the UF permeate
• CPC Class Codes: A23C 9/1427 by dialysis, reverse osmosis or hyperfiltration, e.g. for concentrating or desalting
• CPC Class Codes: A23C 9/144 by electrical means, e.g. electrodialysis
• CPC Class Codes: A23C 9/1465 Chromatographic separation of protein or lactose fraction; Adsorption of protein or lactose fraction followed by elution
• CPC Class Codes: A23C 9/148 by molecular sieve or gel filtration or chromatographic treatment A23C9/1465 takes precedence
• CPC Class Codes: A23C 9/1512 containing isolated milk or whey proteins, caseinates or cheese; Enrichment of milk products with milk proteins in isolated or concentrated form, e.g. ultrafiltration retentate
• CPC Class Codes: A23C 9/152 containing additives fermented milk preparations containing additives A23C9/13
• CPC Class Codes: A23J 1/205 from whey, e.g. lactalbumine
• CPC Class Codes: A23L 33/40 Complete food formulations for specific consumer groups or specific purposes, e.g. infant formula

Abstract

A demineralised whey powder is suggested which is obtainable by:

• • (a) Separating raw milk, removing the cream;
  • (b) Subjecting the skimmed milk such obtained to microfiltration or microdiafiltration, obtaining a whey protein-rich permeate P1 and a retentate R1 containing casein and GMP in the process;
  • (c) Subjecting the permeate P1 to column chromatography separation, in which the lactoferrin contained therein remains on the column;
  • (d) Subjecting the permeate, from which lactoferrin had been removed, to dialysis; and
  • (e) Dehydrating the diluate such obtained.

Claims

1. A demineralised whey powder, obtained by:

(a) separating raw milk, removing the cream;

(b) subjecting the skimmed milk such obtained to microfiltration or microdiafiltration, obtaining a whey protein-rich permeate P1 and a retentate R1 containing casein and GMP in the process;

(c) subjecting the permeate P1 to column chromatography separation, in which the lactoferrin contained therein remains on the column;

(d) subjecting the permeate, from which lactoferrin had been removed in this manner, to dialysis; and

(e) dehydrating the diluate such obtained.

2. The whey powder of claim 1, wherein

(a) raw milk is separated, removing the cream;

(b) the skimmed milk such obtained is subjected to microfiltration or microdiafiltration, obtaining a whey protein-rich permeate P1 and a retentate R1 containing casein and GMP in the process;

(c) the permeate P1 is subjected to column chromatography separation, in which the lactoferrin contained therein remains on the column;

(d) the permeate, from which lactoferrin had been removed in this manner, is subjected to nanofiltration, obtaining a permeate P2 and a retentate R2 in the process;

(e) the permeate P2 is subjected to electrodialysis;

(f) the diluate such obtained is demineralised by means of a cation exchanger;

(g) the demineralised diluate such obtained is pasteurised;

(h) the pasteurised diluate such obtained is dehydrated; and

is, optionally,

(i) enriched with defined amounts of additives.

6. The process of claim 1, wherein microfiltration or microdiafiltration is performed with a membrane having a pore size in the range from about 0.1 to about 1 μ

m.

7. The process of claim 1, wherein the lactoferrin of the column is eluated, salts are removed from the eluate, which is then dried, and the pure lactoferrin is subsequently added to the demineralised whey powder in defined amounts again.

8. The process of claim 1, wherein the permeate P1, from which lactoferrin had been removed, is subjected to nanofiltration or reverse osmosis, and the retentate R2 such obtained, which contains the milk minerals, is retained for further use, and the demineralised permeate P2 is subsequently dialysed.

9. The process of claim 8, wherein nanofiltration is performed with a membrane having a pore size in the range from about 150 to about 1,000 nm.

10. The process of claim 1, wherein the permeate P1, from which lactoferrin had been removed, is concentrated before dialysis by evaporation.

11. The process of claim 1, wherein the permeate P1 or P2, from which lactoferrin had been removed, is subjected to electrodialysis.

12. The process of claim 1, wherein the diluate is treated with a cation exchanger and then dried.

13. The process of claim 1, wherein the diluate is subjected to pasteurisation and then dried.

14. The process of claim 1, wherein the diluate is subjected to spray drying or freeze drying.

15. Method for production of infant formula, comprising incorporating the demineralised whey powder of claim 1.

3. A process for the production of a demineralised whey powder, comprising the following steps:

(a) separating raw milk into skimmed milk and cream;

(b) microfiltrating or microdiafiltrating the skimmed milk, obtaining a whey protein-rich permeate P1 and a retentate R1 containing casein and GMP;

(c) separating the lactoferrin from the permeate P1 by means of column chromatography;

(d) dialysing the permeate P1 from which lactoferrin had been removed;

(e) drying the diluate, obtaining a product in powder form.

4. The process of claim 3, wherein the raw milk is cold-separated.

5. The process of claim 4, wherein the raw milk is separated at a temperature in the range from 8 to 15°

C.