US4435429A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processing aqueous treated cereals
Assignee: HER MAJESTY IN RIGHT OF CANADA AGRICULTURE, Minister of
•
Filing: 1982-02-16
•
Granted: 1984-03-06
•
Expires: 2002-02-16
Abstract
Abstract A process for treating cereal grains and particularly oats, to separate the endosperm from the remainder of the kernel without dry milling. The grains are soaked in an aqueous medium having a pH of 3.0-7.0 at a temperature in the range 40 DEG -70 DEG C. for sufficient time to absorb at least an equal weight of the liquid medium. The conditions are such that the endosperm portion of the grain liquefies, as opposed to softens. The grain may be crushed in a variety of ways to split the husk and release the liquid endosperm contents which are then dispersed in water. The endosperm solids can be recovered from dispersion, following a screening step to separate the husks by drying to yield a substantially white, lower fiber whole endosperm flour product. Alternatively, the dispersion may be sedimented and/or centrifuged to produce a wet solids fraction and a soluble fraction, each of which can be subsequently recovered in dry form.
Inventors
- 👤 Vernon D. Burrows
- 👤 Royce G. Fulcher
- 👤 David Paton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:54
CPC Classifications
A; A23; A23J; A23J1/00; A23J1/12; A21; A21D; A21D2/00; A21D2/08; A21D2/24; A21D2/26
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
103 words
A process for treating cereal grains to separate endospermic from non-endospermic tissues thereof, said process comprising: (a) soaking the grains in an aqueous medium having a pH in the range 3.0-7.0 at a temperature in the range 40.0°-70.0° C. until the grains have absorbed said liquid medium in an amount at least equivalent to the weight of the grain, to substantially liquefy said endosperm portion by the action of indigenous cell wall degrading enzymes; (b) applying pressure on the soaked grains so as to split each grain and release substantially all of the liquified endosperm; and (c) separating liquified endosperm from non-endospermic tissues.
Claim 2
Dependent Claim
103 words
A process for treating cereal grains to separate endospermic from non-endospermic tissues thereof, said process comprising: (a) soaking the grains in an aqueous medium having a pH in the range 3.0-7.0 at a temperature in the range 40.0°-70.0° C. until the grains have absorbed said liquid medium in an amount at least equivalent to the weight of the grain, to substantially liquefy said endosperm portion by the action of indigenous cell wall degrading enzymes; (b) applying pressure on the soaked grains so as to split each grain and release substantially all of the liquified endosperm; and (c) separating liquified endosperm from non-endospermic tissues.
Claim 3
Dependent Claim
13 words
A process as claimed in claim 1 wherein said cereal grain is oats.
Claim 4
Dependent Claim
21 words
A process as claimed in claim 2 wherein the oats are selected from whole grain, dehulled grain and hulless type grain.
Claim 5
Dependent Claim
15 words
A process as claimed in claim 2 wherein the oats used may contain wild oats.
Claim 6
Dependent Claim
16 words
A process as claimed in claim 1 wherein said pressure application step comprises squeezing between rollers.
Claim 7
Dependent Claim
35 words
A process as claimed in claim 1, 2 or 3 wherein said grains are soaked in said aqueous medium having a pH in the range 4.5-5.5 and at a temperature in the range 45°-55° C.
Claim 8
Dependent Claim
21 words
A process as claimed in claim 1 including the step of screening the liquefied endosperm to remove bran fines and fibres.
Claim 9
Dependent Claim
24 words
A process as claimed in claim 1, 2 or 3 including the step of drying said liquified endosperm and recovering in a dried form.
Claim 10
Dependent Claim
44 words
A process as claimed in claim 1 wherein the released refined liquid endosperm is centrifuged, filtered or sedimented to give two fractions containing endospermic components (a) soluble and (b) insoluble in the aqueous medium, each of which may be dried to yield solid products.
Claim 11
Dependent Claim
28 words
A process as claimed in claim 1, 2 or 3 wherein sulfur dioxide is added to said aqueous medium at a level not in excess of 0.1% W.W.
Claim 12
Dependent Claim
31 words
A low fibre substantially white oat flour containing substantially all of the endosperm portion of the oat grain from which it is derived, and produced by the process of claim 1.
Claim 13
Dependent Claim
16 words
An oat flour as claimed in claim 11 containing less than about 1% by weight fibre.
Claim 14
Dependent Claim
28 words
A non-bread bakery product containing, wheat flour and, in admixture therewith, up to an equal weight thereof of an oat flour as claimed in claim 11 or 12.
Claim 15
Dependent Claim
26 words
A non-bread bakery product as claimed in claim 13 containing said oat flour in an amount between 25% and 50% by weight of said wheat flour.
References Cited (Backward Citations)
US1155093A
Cited
US1244586A
Cited
US1670015A
Cited
US2930699A
Cited
US3752675A
Cited
US3851085A
Cited
US4350709A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-03-06 | 1987-09-05 | 1988-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-06 | 1991-09-05 | 1992-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-06 | 1995-09-05 | 1996-03-06 | $7700.00 | Window Closed / Lapsed |