US4376072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing milk protein isolates and milk protein/vegetable protein isolates and compositions of same
Assignee: NEW ZEALAND MILK PRODUCTS Inc A CORP OF IL
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Filing: 1980-11-17
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Granted: 1983-03-08
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Expires: 2000-11-17
Abstract
Abstract Proteins lacking isoelectric points are precipitated out of solution by combining with the solution a protein (i.e. one or more proteins) having an isoelectric point, alkalizing the mixture to a pH of about 9-11, acidifying the mixture to a pH of about 2-4, and adjusting the pH of the mixture to the isoelectric point of the protein to precipitate novel protein complexes. A novel protein-free, undenatured dairy whey valuable for lactose crystallization and alcohol production is also obtainable.
Inventors
- 👤 Philip B. Connolly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:04
CPC Classifications
A; A23; A23J; A23J1/00; A23J1/20; Y; Y10; Y10S; Y10S530/00; Y10S530/827; Y10S530/832; Y10S530/833
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
70 words
A protein composition obtained from the method comprising treating at about 55° C. a system of dairy whey and a normally acid insoluble protein having an isoelectric point of 4-5 by alkalizing the system to a pH of 9-11, acidifying the system to a pH of 2-4, adjusting the pH of the system to the isoelectric point of said protein, and separating and recovering the precipitated protein complex resulting therefrom.
Claim 2
Dependent Claim
70 words
A protein composition obtained from the method comprising treating at about 55° C. a system of dairy whey and a normally acid insoluble protein having an isoelectric point of 4-5 by alkalizing the system to a pH of 9-11, acidifying the system to a pH of 2-4, adjusting the pH of the system to the isoelectric point of said protein, and separating and recovering the precipitated protein complex resulting therefrom.
Claim 3
Dependent Claim
73 words
A substantially protein-free, undenatured dairy whey obtained by the method comprising treating at about 55° C. a system of dairy whey and a normally acid insoluble protein having an isoelectric point of 4-5 by alkalizing the system to a pH of 9-11, acidifying the system to a pH of 2-4, adjusting the pH of the system to the isoelectric point of said protein, separating the precipitate resulting therefrom, and recovering the resultant filtrate.
Claim 4
Dependent Claim
73 words
A substantially protein-free, undenatured dairy whey obtained by the method comprising treating at about 55° C. a system of dairy whey and a normally acid insoluble protein having an isoelectric point of 4-5 by alkalizing the system to a pH of 9-11, acidifying the system to a pH of 2-4, adjusting the pH of the system to the isoelectric point of said protein, separating the precipitate resulting therefrom, and recovering the resultant filtrate.
Claim 5
Independent Claim
46 words
The method for precipitating whey protein comprising treating non-fat milk by maintaining it at a temperature of about 55° C., alkalizing it to a pH of about 9-11, acidifying it to a pH of about 2-4, and adjusting its pH to the isoelectric point of casein.
Claim 6
Independent Claim
46 words
The method for precipitating whey protein comprising treating non-fat milk by maintaining it at a temperature of about 55° C., alkalizing it to a pH of about 9-11, acidifying it to a pH of about 2-4, and adjusting its pH to the isoelectric point of casein.
References Cited (Backward Citations)
US3687928A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-03-07 | 1986-09-06 | 1987-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-07 | 1990-09-06 | 1991-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-07 | 1994-09-06 | 1995-03-08 | $7700.00 | Window Closed / Lapsed |