Heat sterilized high protein compositions with hydrolyzed protein from a continuous process with at least one endopeptidase

Patent metadata

Field	Value
Publication number	US-10820618-B2
Application number	US-201616062922-A
Country	US
Kind code	B2
Filing date	Nov 22, 2016
Priority date	Dec 18, 2015
Publication date	Nov 3, 2020
Grant date	Nov 3, 2020

Abstract

The present invention is directed to a heat sterilized composition comprising: a protein source in an amount of 5 to 20% by weight of the composition, said protein source comprising hydrolyzed protein; wherein the protein source has been treated in a continuous process with at least one endopeptidase, typically for a finite length of time. Furthermore, the invention concerns a heat sterilized high protein composition having low viscosity and being devoid of bitterness, comprising hydrolyzed heat sensitive protein source having a degree of protein hydrolysis in NPN/TN of 20 to 50% and at least one heat inactivated endopeptidase. The present invention is furthermore directed to a continuous process for preparing a heat sterilized composition which comprises a protein source containing hydrolyzed protein, the process comprising the following steps: (i) Providing an aqueous solution of a protein source; (ii) Performing a continuous hydrolysis step wherein the aqueous solution of a protein source is treated with at least one endopeptidase by heating at 40 to 90° C. and for a finite length of time of 2 to 20 minutes; (iii) heat inactivation of the endopeptidase. The invention also concerns a method of controlling viscosity and preventing bitter taste of a heat sterilized high protein composition, the method comprising providing an aqueous solution of a protein source and continuously hydrolyzing the aqueous solution of a protein source with at least one endopeptidase prior to heat inactivation of the said endopeptidase. Finally, the invention concerns the use of hydrolyzed protein prepared in a continuous process as described herein by treatment with at least one endopeptidase for a finite length of time, for preparing a heat sterilized composition and/or for controlling the viscosity of a liquid composition, wherein the composition comprises 5 to 20 weight % total protein. The invention also concerns medical uses and treatments applying or using the inventive heat sterilized composition.

First claim

The invention claimed is:

1. A process for preparing a heat sterilized liquid composition which comprises a protein source containing hydrolyzed protein, the process comprising the following steps:
(i) providing an aqueous solution of a protein source;
(ii) performing a continuous hydrolysis step wherein the aqueous solution of the protein source is treated with at least one endopeptidase by heating at 40 to 90° C. for a finite length of time selected from a period of 2 to 20 minutes; and
(iii) heat inactivation of the at least one endopeptidase to obtain the heat sterilized liquid composition, the protein source being 5 to 20% by weight of the heat sterilized liquid composition, the heat sterilized liquid composition having a viscosity below 875 mPa s at 20° C./100 s −1 , and the protein source comprising hydrolyzed protein having a degree of protein hydrolysis in Non-protein nitrogen/Total nitrogen (NPN/TN) of 20 to 50%.

2. The process according to claim 1 , wherein steps (i) and (ii) are performed at a pH of 6 to 11.

3. The process according to claim 1 , wherein step (iii) heat inactivation of the at least one endopeptidase is performed at above 70° C.

4. The process according to claim 1 , wherein following steps (i) to (iii) the heat sterilized liquid composition is obtained comprising the protein source in an amount of 5 to 20% by weight of the heat sterilized liquid composition, the heat sterilized liquid composition having a viscosity below 200 mPa s at 20° C./100 s −1 .

5. The process according to claim 1 , wherein following steps (i) to (iii) the heat sterilized liquid composition is dried to form a powder.

6. The process according to claim 5 , wherein the heat sterilized liquid composition is dried to form the powder by spray drying.

Assignees

• Nestec Sa
• Nestle Sa

Inventors

• Braun Marcel
• Kreb Nico
• Sveje Kristine Mette

Classifications

• A23L33/19

  Dairy proteins · CPC title

• A23L33/40 Primary

  Complete food formulations for specific consumer groups or specific purposes, e.g. infant formula · CPC title

• A23J3/34

  using enzymes · CPC title

• A23J3/08

  Dairy proteins · CPC title

• A23L33/18

  Peptides; Protein hydrolysates · CPC title