US4442207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for production of glucosone
Assignee: Nabisco Brands Inc
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Filing: 1982-06-30
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Granted: 1984-04-10
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Expires: 2002-06-30
Abstract
Abstract Glucose-2-oxidase activity is produced by cultivating certain fungi of the Basidiomycetes class and the enzyme is employed in the oxidation of glucose to glucosone which can be converted to fructose.
Inventors
- 👤 Robert O. Horwath
- 👤 Osama O. Ibrahim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:15
CPC Classifications
C; C12; C12N; C12N9/00; C12N9/0004; C12N9/0006; C12P; C12P19/00; C12P19/02; C12P7/00; C12P7/40; C12P7/58; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/911
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
71 words
A process for producing glucosone and co-producing hydrogen peroxide which comprises contacting an aqueous solution of glucose with oxygen and glucose-2-oxidase produced by at least one fungus of the Basidiomycetes class selected from the group consisting of NRRL 15093, NRRL 15094 and NRRL 15095, said fungus being characterized in that substantially all of the glucose-2-oxidase activity thereof is available to aqueous glucose substrate on contact therewith without disruption of the fungus.
Claim 2
Dependent Claim
71 words
A process for producing glucosone and co-producing hydrogen peroxide which comprises contacting an aqueous solution of glucose with oxygen and glucose-2-oxidase produced by at least one fungus of the Basidiomycetes class selected from the group consisting of NRRL 15093, NRRL 15094 and NRRL 15095, said fungus being characterized in that substantially all of the glucose-2-oxidase activity thereof is available to aqueous glucose substrate on contact therewith without disruption of the fungus.
Claim 3
Dependent Claim
18 words
The process according to claim 1 wherein mycelia of said fungus are contacted with said aqueous glucose solution.
Claim 4
Dependent Claim
21 words
The process of claim 1 wherein the co-produced hydrogen peroxide is destroyed, utilized or removed from the reaction mixture when produced.
Claim 5
Dependent Claim
17 words
The process of claim 3 wherein the co-produced hydrogen peroxide is catalytically decomposed to water and oxygen.
Claim 6
Dependent Claim
18 words
The process of claim 3 wherein the co-produced hydrogen peroxide is decomposed by enzymes in the fungus mycelia.
Claim 7
Dependent Claim
20 words
The process of claim 3 wherein the co-produced hydrogen peroxide is reacted with an olefin to form an oxygenated product.
Claim 8
Dependent Claim
19 words
The process of claim 1 wherein the glucosone product is enzymatically converted to 2-ketogluconic acid by contact with glucose-1-oxidase.
Claim 9
Dependent Claim
14 words
The process of claim 1 wherein the glucosone product is catalytically hydrogenated to fructose.
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) | 1987-04-10 | 1987-10-10 | 1988-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-10 | 1991-10-10 | 1992-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-10 | 1995-10-10 | 1996-04-10 | $7700.00 | Window Closed / Lapsed |