US3707770A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the production of cheese solids
Assignee: Kovalus Separation Solutions LLC
•
Filing: 1971-08-11
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Granted: 1973-01-02
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Expires: 1991-08-11
Abstract
Abstract In a process for the preparation of a cheese solid and a treatment of the whey solution by a semipermeable membrane, the improvement which comprises: employing, to wash the curd product of the cheese solid, a low BOD effluent fraction derived from a reverse osmosis high-pressure membrane stage used to treat the whey solution; and recycling the wash effluent to the whey solution to be treated, thereby improving the total management of water in the cheese manufacturing process and avoiding waterpollution problems.
Inventors
- 👤 R Goldsmith
- 👤 R Timmins
- 👤 B Horton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:52
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/02; B01D61/025; A; A23; A23C; A23C9/00; A23C9/14; A23C9/142; A23C9/1425
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
15 words
The process of claim 1 wherein the cheese solid is a cottage or colby cheese.
Claim 2
Dependent Claim
19 words
The process of claim 1 which includes washing the cheese curd a plurality of times in successive wash stages.
Claim 3
Dependent Claim
23 words
The process of claim 1 which includes employing the low BOD waste effluent fraction in a first and a successive second wash stage.
Claim 4
Dependent Claim
25 words
The process of claim 3 which includes adding the low BOD effluent fraction from the first wash stage to the whey solution to be separated.
Claim 5
Dependent Claim
33 words
The process of claim 3 which includes employing the washings from the second and subsequent wash stages as a feed stream to a reverse osmosis stage to provide a low BOD effluent fraction.
Claim 6
Dependent Claim
20 words
The process of claim 1 wherein the low BOD effluent fraction has a BOD content of 2,500 ppm or less.
Claim 7
Dependent Claim
134 words
In a process for preparing a cheese solid, which process comprises: forming from a milk product a cheese curd and an aqueous whey solution, the whey solution containing a protein fraction and a lactose fraction; washing the cheese curd so formed with water; separating the protein fraction from the lactose fraction by employing a low-pressure ultrafiltration semipermeable membrane; separating the lactose permeate fraction so obtained by a high-pressure reverse osmosis semipermeable stage into a lactose fraction and low BOD effluent fraction; and recovering the cheese solid after washing, the improvement which comprises; a. washing the cheese curd with the low BOD effluent fraction from the reverse osmosis stage; and b. adding the effluent fraction after washing to the whey solution prior to subjecting the whey solution to the ultrafiltration and reverse osmosis semipermeable stages.
Claim 8
Dependent Claim
33 words
The process of claim 8 which includes washing the cheese curd a plurality of times in successive wash stages, and employing the low BOD effluent fraction in the first and second wash stages.
Claim 9
Dependent Claim
23 words
The process of claim 9 which includes adding only the wash effluent from the first stage to the whey solution to be separated.
Claim 10
Dependent Claim
168 words
In the process of preparing a cottage cheese solid, which process comprises: forming from a milk stream a cheese curd product and a whey solution; washing the curd product with water in a series of at least two successive wash stages; separating a whey solution containing a protein fraction or a lactose fraction into a protein fraction by subjecting the whey solution to a low-pressure ultrafiltration semipermeable membrane stage to provide a protein fraction and a lactose fraction; separating the lactose fraction into a concentrated lactose fraction and a low BOD effluent fraction by employing a reverse osmosis high-pressurE semipermeable membrane stage, and recovering the cottage cheese solids, the improvement which comprises: a. washing the cheese curd product in at least the first and second wash stages with the low BOD aqueous effluent fraction derived from the reverse osmosis stage; and b. adding the wash effluent from the first wash stage to the whey solution prior to separating the whey solution in the ultrafiltration and reverse osmosis stages.
References Cited (Backward Citations)
US2908575A
Cited
US2917827A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-02 | 1976-07-03 | 1977-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-02 | 1980-07-03 | 1981-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-02 | 1984-07-03 | 1985-01-02 | $7700.00 | Window Closed / Lapsed |