US3895003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing protein concentrate using air classification
Assignee: Procter and Gamble Co
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Filing: 1973-06-07
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Granted: 1975-07-15
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Expires: 1993-06-07
Abstract
Abstract A process for producing a protein concentrate which comprises the steps of fine grinding an oilseed meal, making a first air classification of the meal and removing a 60 to 90% by weight fines fraction, ultra-finely milling the fines fraction to where 90% of the particles are less than 20 microns in diameter, making a second air classification of the milled fraction and removing a coarse fraction of 50 to 90% by weight, and washing the coarse fraction in water at pH 4 to 6 or in a 20 to 80% by weight aqueous alcohol solution. In a preferred embodiment of this invention, the ultra-fine milling operation is carried out in a fluid energy mill.
Inventors
- 👤 Ronald Bruce Swain
- 👤 David Evans O'connor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:08
CPC Classifications
A; A23; A23J; A23J1/00; A23J1/14; A23J1/142
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
212 words
A PROCESS FOR PRODUCING A PROTEIN CONCENTRATE WHICH COMPRISES THE STEPS OF A. FINE GRINDING AN OIL SEED MEAL SO THAT ABOUT 90% OF THE PARTICLES HAVE A PARTICLE SIZE OF LESS THAN ABOUT 100 MICRONS IN DIAMETER, B. AIR CLASSIFYING THE MEAL IN STEP (A) TO PRODUCE A FIST FINES FRACTION AND A FIRST COARSE FRACTION AND REMOVING THIS FIRST FINE FRACTION WHICH IS 60 TO 90% BY WEIGHT OF THE GROUP MEAL AND OF WHICH ABOUT 90% ARE OF A SIZE LESS THAN 45 MICRONS IN DIAMETER, C. ULTRA-FINELY GRINDING THE FIRST FINS FRACTION FROM STEP (A) SO THAT 90% OF THE PARTICLES ARE LESS THAN 20 MICRONS IN DIAMETER, D. AIR-CLASSIFYING THE GROUND FIRST FINES FRACTION FROM STEP (C) TO PRODUCE A SECOND FINES FRACTION AND A SECOND COARSE FRACTION AND REMOVING THIS SECOND COARSE FRACTION WHICH IS 50 TO 90% BY WEIGHT OF THE GROUND FIRST FINES FRACTION AND OF WHICH AT LEAST ABOUT 80% OF THE PARTICLES ARE LESS THAN 20 MICRONS IN DIAMETER, AND E. WASHING THE SECOND COASE FRACTION WITH A SOLUTION SELECTED FROM THE GROUP CONSISTING OF WATER AT A PH OF 4 TO 6, AND A 20 TO 80% BY WEIGHT AQUEOUS ALCOHOLIC SOLUTION AND SEPARATING A PROTEIN-CONTAINING RESIDUE FROM A LIQUID SUPERNATANT.
Claim 2
Dependent Claim
212 words
A PROCESS FOR PRODUCING A PROTEIN CONCENTRATE WHICH COMPRISES THE STEPS OF A. FINE GRINDING AN OIL SEED MEAL SO THAT ABOUT 90% OF THE PARTICLES HAVE A PARTICLE SIZE OF LESS THAN ABOUT 100 MICRONS IN DIAMETER, B. AIR CLASSIFYING THE MEAL IN STEP (A) TO PRODUCE A FIST FINES FRACTION AND A FIRST COARSE FRACTION AND REMOVING THIS FIRST FINE FRACTION WHICH IS 60 TO 90% BY WEIGHT OF THE GROUP MEAL AND OF WHICH ABOUT 90% ARE OF A SIZE LESS THAN 45 MICRONS IN DIAMETER, C. ULTRA-FINELY GRINDING THE FIRST FINS FRACTION FROM STEP (A) SO THAT 90% OF THE PARTICLES ARE LESS THAN 20 MICRONS IN DIAMETER, D. AIR-CLASSIFYING THE GROUND FIRST FINES FRACTION FROM STEP (C) TO PRODUCE A SECOND FINES FRACTION AND A SECOND COARSE FRACTION AND REMOVING THIS SECOND COARSE FRACTION WHICH IS 50 TO 90% BY WEIGHT OF THE GROUND FIRST FINES FRACTION AND OF WHICH AT LEAST ABOUT 80% OF THE PARTICLES ARE LESS THAN 20 MICRONS IN DIAMETER, AND E. WASHING THE SECOND COASE FRACTION WITH A SOLUTION SELECTED FROM THE GROUP CONSISTING OF WATER AT A PH OF 4 TO 6, AND A 20 TO 80% BY WEIGHT AQUEOUS ALCOHOLIC SOLUTION AND SEPARATING A PROTEIN-CONTAINING RESIDUE FROM A LIQUID SUPERNATANT.
Claim 3
Dependent Claim
23 words
The process of claim 1 wherein the oilseed meal is selected from the group consisting of soy meal, cottonseed meal, and sunflowerseed meal.
Claim 4
Dependent Claim
15 words
The process of claim 2 wherein a fluid energy mill is used in step (c).
Claim 5
Dependent Claim
25 words
The process of claim 3 wherein step (e) comprises washing the coarse fraction from step (d) in water at a pH of 4 to 6.
Claim 6
Dependent Claim
37 words
The process of claim 3 wherein step (e) comprises washing the coarse fraction from step (d) in a 20 to 80% by weight aqueous alcohol solution selected from the group consisting of methanol, ethanol, and isopropanol solutions.
Claim 7
Dependent Claim
27 words
The process of claim 4 wherein step (a) comprises pin milling the oilseed meal so that 90% of the particles are less than 100 microns in diameter.
Claim 8
Dependent Claim
25 words
The process of claim 6 wherein oilseed meal is soy meal and said meal is washed in water at a pH of 4 to 5.
Claim 9
Dependent Claim
24 words
The process of claim 6 whereIn the oilseed meal is cottonseed meal and said meal is washed at a pH of 4.5 to 5.5.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-14 | 1979-01-13 | 1979-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-14 | 1983-01-13 | 1983-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-14 | 1987-01-13 | 1987-07-15 | $7700.00 | Window Closed / Lapsed |