Claims
- 1. A process for producing a hydrolyzed protein, comprising:
(a) heating an aqueous dispersion of a protein-containing starting material with a plate-type heat exchanger with a liquid heating medium, to obtain a heated dispersion; (b) maintaining said heated dispersion at an elevated temperature, to obtain a substantially aseptic dispersion; and (c) subjecting said substantially aseptic dispersion to hydrolysis with a proteolytic enzyme, wherein said aqueous dispersion is acidic during said heating and said heated dispersion is acidic during said maintaining.
- 2. The process as claimed in claim 1, wherein said aqueous dispersion contains said protein-containing starting material in a concentration of at least 10 g/dl.
- 3. The process as claimed in claim 1, wherein said aqueous dispersion has a pH between 3 and 6 during said heating and said heated dispersion has a pH between 3 and 6 during said maintaining.
- 4. The process as claimed in claim 1, wherein said liquid is water having a temperature of 120 to 150° C.
- 5. The process as claimed in claim 1, wherein said aqueous dispersion is heated to a temperature between 120 and 140° C. and said heated dispersion is maintained at a temperature between 120 and 140° C. for 1 to 20 minutes.
- 6. The process as claimed in claim 1, wherein said proteolytic enzyme is substantially free of microorganism contamination.
- 7. The process as claimed in claim 1, wherein said protein-containing starting material comprises a partially hydrolyzed protein.
- 8. The process as claimed in claim 7, wherein said partially hydrolyzed protein is one hydrolyzed to such an extent that a rate of formol nitrogen based on available nitrogen is between 0.05 and 10%.
- 9. The process as claimed in claim 1, wherein said protein-containing starting material comprises a vegetable protein.
- 10. The process as claimed in claim 9, wherein said vegetable protein is a protein derived from wheat, corn, or beans.
- 11. The process as claimed in claim 1, wherein said protein-containing starting material comprises an animal protein.
- 12. The process as claimed in claim 11, wherein said animal protein is a protein derived from a domestic animal, poultry, a fish or a shellfish.
- 13. The process as claimed in claim 1, wherein said proteolytic enzyme is an enzyme derived from a microorganism.
- 14. The process as claimed in claim 13, wherein said microorganism is a koji mold.
- 15. The process as claimed in claim 1, comprising:
(1) dispersing a protein-containing starting material in an aqueous medium at a concentration of at least 10 g/dl to obtain an aqueous dispersion of said protein-containing starting material; (2) adjusting the pH of said aqueous dispersion to between 3 and 6 when the pH of said aqueous dispersion is not between 3 and 6; (3) heating said aqueous dispersion with a plate-type heat exchanger using hot water as a heat medium to an elevated temperature and maintaining said dispersion at an elevated temperature, to render said aqueous dispersion substantially aseptic; (4) adding a proteolytic enzyme substantially free of microorganism contamination to said aqueous dispersion; and (5) hydrolyzing said protein-containing starting material with said proteolytic enzyme.
- 16. A process for rendering a protein-containing starting material substantially aseptic, wherein said method comprises:
(a) heating an aqueous dispersion of a protein-containing starting material with a plate-type heat exchanger with a liquid heating medium, to obtain a heated dispersion; and (b) maintaining said heated dispersion at an elevated temperature, to obtain a substantially aseptic dispersion, wherein said aqueous dispersion is acidic during said heating and said heated dispersion is acidic during said maintaining.
- 17. A method for preparing a food product, said method comprising:
(a) heating an aqueous dispersion of a protein-containing starting material with a plate-type heat exchanger with a liquid heating medium, to obtain a heated dispersion; (b) maintaining said heated dispersion at an elevated temperature, to obtain a substantially aseptic dispersion; (c) subjecting said substantially aseptic dispersion to hydrolysis with a proteolytic enzyme, to obtain a hydrolyzed protein; and (d) adding said hydrolyzed protein to a food to obtain said food product, wherein said aqueous dispersion is acidic during said heating and said heated dispersion is acidic during said maintaining.
- 18. The process as claimed in claim 17, wherein said aqueous dispersion contains said protein-containing starting material in a concentration of at least 10 g/dl.
- 19. The process as claimed in claim 17, wherein said aqueous dispersion has a pH between 3 and 6 during said heating and said heated dispersion has a pH between 3 and 6 during said maintaining.
- 20. The process as claimed in claim 17, wherein said liquid is water having a temperature of 120 to 150° C.
CROSS REFERENCES TO RELATED APPLICATIONS
[0001] This application is a continuation of PCT International Application No. PCT/JP00/07645, which was filed on Oct. 30, 2000, and which is incorporated herein by reference in its entirety.
Continuations (1)
|
Number |
Date |
Country |
Parent |
PCT/JP00/07645 |
Oct 2000 |
US |
Child |
10183686 |
Jun 2002 |
US |