US3937693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of edible protein containing substances
Assignee: Ranks Hovis McDougall Ltd
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Filing: 1974-02-08
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Granted: 1976-02-10
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Expires: 1994-02-08
Abstract
Abstract Process for reducing the nucleic acid content in the production of an edible protein-containing substance comprising contacting a grown non-toxic microfungus of the class Fungi Imperfecti with a solvent comprising between 40% and 100% (by volume) of a lower alkanol containing up to three carbon atoms and thereafter incubating at a pH between 5 and 9.5 and at a temperature between 30°C. and 80°C. for a time of at least 90 seconds.
Inventors
- 👤 Peter John Towersey
- 👤 John Longton
- 👤 Geoffrey Norman Cockram
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:51
CPC Classifications
A; A23; A23J; A23J3/00; A23J3/20; C; C12; C12N; C12N1/00; C12N1/08; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/911; Y10S435/913; Y10S435/917; Y10S435/929; Y10S435/933; Y10S435/935; Y10S435/936; Y10S530/00; Y10S530/82; Y10S530/821; Y10S530/823
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
98 words
A process for reducing the nucleic acid content in the production of an edible protein-containing substance comprising contacting a grown non-toxic microfungus of the class Fungi Imperfecti with a solvent comprising between 40% and 100% by volume of a lower alkanol containing up to three carbon atoms and the remainder being water, substantially separating said solvent from said microfungus, incubating said microfungus at a pH between 5 and 9.5 in an aqueous suspension and at a temperature between 30°C and 80°C for a time of at least 90 seconds and thereafter separating said microfungus from the aqueous suspension.
Claim 2
Dependent Claim
98 words
A process for reducing the nucleic acid content in the production of an edible protein-containing substance comprising contacting a grown non-toxic microfungus of the class Fungi Imperfecti with a solvent comprising between 40% and 100% by volume of a lower alkanol containing up to three carbon atoms and the remainder being water, substantially separating said solvent from said microfungus, incubating said microfungus at a pH between 5 and 9.5 in an aqueous suspension and at a temperature between 30°C and 80°C for a time of at least 90 seconds and thereafter separating said microfungus from the aqueous suspension.
Claim 3
Dependent Claim
33 words
A process as claimed in claim 1 wherein the grown non-toxic microfungus of the class Fungi Imperfecti is a grown non-toxic strain of Fusarium, Penicillium notatum, Penicillium chrysogenum Penicillium tuniculosum or Aspergillus niger.
Claim 4
Dependent Claim
24 words
A process as claimed in claim 2 wherein the strain of Fusarium is a strain of Fusarium graminearum Schwabe, Fusarium oxysporum or Fusarium solani.
Claim 5
Dependent Claim
33 words
A process as claimed in claim 3 wherein the strain of Fusarium graminearum Schwabe is our strain of Fusarium graminearum Schwabe deposited with the Commonwealth Mycological Institute and assigned the number IMI 145425.
Claim 6
Dependent Claim
34 words
A process as claimed in claim 2 wherein the strain of Penicillium notatum or Penicillium chrysogenum is our strain of Penicillium notatum-chrysogenum deposited with the Commonwealth Mycological Institute and assigned the number IMI 138291.
Claim 7
Dependent Claim
25 words
A process as claimed in claim 1 wherein the lower alkanol containing up to three carbon atoms is methyl alcohol, ethyl alcohol or propyl alcohol.
Claim 8
Dependent Claim
20 words
A process as claimed in claim 1 wherein the lower alkanol containing up to three carbon atoms is isopropyl alcohol.
Claim 9
Dependent Claim
20 words
A process as claimed in claim 7 wherein an aqueous solution containing between 50% and 100% isopropyl alcohol is employed.
Claim 10
Dependent Claim
20 words
A process as claimed in claim 1 wherein the incubation is carried out at a temperature between 45° and 60°C.
Claim 11
Dependent Claim
23 words
A process as claimed in claim 9 wherein the incubation is carried out for a time of between 1.5 minutes and 40 minutes.
Claim 12
Dependent Claim
21 words
A process as claimed in claim 1 wherein the incubation step is carried out in the presence of a buffer solution.
Claim 13
Dependent Claim
21 words
A process as claimed in claim 11 wherein the buffer solution is NH 4 Cl/NH 4 OH or NH 4 Cl/HCl.
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) | 1979-02-09 | 1979-08-11 | 1980-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-09 | 1983-08-11 | 1984-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-09 | 1987-08-11 | 1988-02-10 | $7700.00 | Window Closed / Lapsed |