Claims
- 1. A process for preparing an emulsifying agent consisting essentially of sequentially treating egg yolk with a protease at a pH from 4 to 8.5 and at a temperature from 0.degree. C. to 65.degree. C. and then treating the protease-treated egg yolk with a pancreatic lipase at a pH from 4 to 8.5 and at a temperature from 0.degree. C. to 60.degree. C.
- 2. A process according to claim 1 further comprising pasteurizing the egg yolk after treating the egg yolk with lipase.
- 3. A process according to claim 1 further comprising pasteurizing the egg yolk during the treatment of the egg yolk with lipase.
- 4. A process according to claim 1 wherein the egg yolk is fresh egg yolk.
- 5. A process according to claim 1 wherein the egg yolk is frozen egg yolk.
- 6. A process according to claim 1 wherein the egg yolk is dehydrated egg yolk.
- 7. A process according to claim 1 further comprising heating the egg yolk before treatment with protease.
- 8. A process according to claim 1 wherein the egg yolk is treated with protease, and with lipase, at a temperature of from 35.degree. C. to 43.degree. C.
- 9. A process according to claim 1 wherein the egg yolk is treated with protease, and with lipase, at a temperature from 37.degree. C. to 43.degree. C.
- 10. A process according to claim 1 wherein the egg yolk is treated with an amount of protease from 0.025% to 2% by weight based on a weight of the egg yolk and wherein the egg yolk is treated with an amount of lipase from 0.025% to 3% by weight of the egg yolk.
- 11. A process according to claim 1 wherein the protease-treated egg yolk is treated with pancreatic lipase at a pH from 4.5 to 7.5.
- 12. A process according to claim 1 wherein the protease-treated egg yolk is treated with an amount of lipase from 0.075% to 1% by weight of the egg yolk.
- 13. A process for preparing an emulsifying agent consisting essentially of sequentially treating egg yolk with a pancreatic lipase at a pH from 4 to 8.5 and at a temperature from 0.degree. C. to 60.degree. C. and then treating the lipase-treated egg yolk with a protease at a pH from 4 to 8.5 and at a temperature from 0.degree. C. to 65.degree. C.
- 14. A process according to claim 13 further comprising pasteurizing the egg yolk after the treatment of the egg yolk with protease.
- 15. A process according to claim 13 wherein the egg yolk is fresh egg yolk.
- 16. A process according to claim 13 wherein the egg yolk is frozen egg yolk.
- 17. A process according to claim 13 wherein the egg yolk is dehydrated egg yolk.
- 18. A process according to claim 13 further comprising heating the egg yolk before treatment with lipase.
- 19. A process according to claim 13 wherein the egg yolk is treated with lipase, and with protease, at a temperature from 35.degree. C. to 45.degree. C.
- 20. A process according to claim 13 wherein the egg yolk is treated with lipase, and with protease, at a temperature from 37.degree. C. to 43.degree. C.
- 21. A process according to claim 13 wherein the egg yolk is treated with an amount of lipase from 0.025% to 3% by weight based on a weight of the egg yolk and wherein the egg yolk is treated with an amount of protease from 0.025% to 2% by weight of the egg yolk.
- 22. A process according to claim 13 wherein the egg yolk is treated with pancreatic lipase at a pH from 4.5 to 7.5
- 23. A process according to claim 13 wherein the lipase-treated egg yolk is treated with an amount of protease from 0.025% to 2% by weight of the egg yolk.
CROSS-REFERENCE TO RELATED APPLICATION
This application is a continuation of Ser. No. 07/583,073 filed Sept. 14, 1990 now abandoned which application is a continuation-in-part application of Ser. No. 07/396,851, filed Aug. 21, 1989, now abandoned.
US Referenced Citations (8)
Foreign Referenced Citations (3)
Number |
Date |
Country |
60-62951 |
Apr 1985 |
JPX |
62-29950 |
Feb 1987 |
JPX |
0233750 |
Sep 1988 |
JPX |
Non-Patent Literature Citations (1)
Entry |
Translation of Japanese Patent Application No. 62-65820. |
Continuations (1)
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Number |
Date |
Country |
Parent |
583073 |
Sep 1990 |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
396851 |
Aug 1989 |
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