Patent US4345031A successfully refreshed from Google Patents.
US4345031A
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Process for the manufacture of aldonic acids by an enzymatic method
Assignee: Solvay SA
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Filing: 1980-01-15
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Granted: 1982-08-17
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Expires: 2000-01-15
Abstract
Abstract A process for the preparation of an aldonic acid from the corresponding ose, comprising enzymatically oxidizing the ose in a reaction mixture containing oxygen. The molar ratio of oxygen to ose in the reaction mixture is greater than 0.1.
Inventors
- 👤 Guillaume Coppens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:13
CPC Classifications
C; C12; C12P; C12P7/00; C12P7/40; C12P7/58; C12M; C12M21/00; C12M21/18; C12M41/00; C12M41/30; C12M41/34; C12M41/40; C12N; C12N11/00; C12N11/14; Y; Y10; Y10S; Y10S435/00; Y10S435/818
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
103 words
A process for the manufacture of gluconic acid from glucose, comprising enzymatically oxidizing the glucose in the presence of glucose oxidase, in a reaction mixture containing water as a solvent, and containing dissolved oxygen in a concentration of between 40 and 10,000 mg/liter, wherein the oxidation is carried out at a temperature of between 0° and 60° C. and at a pH of between 4.2 and 8, and wherein the molar ratio of dissolved oxygen to glucose in the reaction mixture is kept above 0.1 by application of a gas containing oxygen under an oxygen partial pressure of between 1 and 100 bar.
Claim 2
Dependent Claim
103 words
A process for the manufacture of gluconic acid from glucose, comprising enzymatically oxidizing the glucose in the presence of glucose oxidase, in a reaction mixture containing water as a solvent, and containing dissolved oxygen in a concentration of between 40 and 10,000 mg/liter, wherein the oxidation is carried out at a temperature of between 0° and 60° C. and at a pH of between 4.2 and 8, and wherein the molar ratio of dissolved oxygen to glucose in the reaction mixture is kept above 0.1 by application of a gas containing oxygen under an oxygen partial pressure of between 1 and 100 bar.
Claim 3
Dependent Claim
20 words
A process according to claim 1, wherein the molar ratio of oxygen to glucose is kept between 0.2 and 50.
Claim 4
Dependent Claim
19 words
A process according to claim 1 or 2, wherein the partial pressure is kept between 3 and 80 bars.
Claim 5
Dependent Claim
17 words
A process according to claim 1 or 2, wherein the glucose oxidase is in the immobilized form.
Claim 6
Dependent Claim
26 words
A process according to claim 1 or 2, wherein said glucose is present in a mixture containing glucose and fructose, and the glucose is oxidized selectively.
References Cited (Backward Citations)
US2351500A
Cited
US2758934A
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US3576718A
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US3862005A
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US3669840A
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US3935071A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-08-16 | 1986-02-15 | 1986-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-16 | 1990-02-15 | 1990-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-16 | 1994-02-15 | 1994-08-17 | $7700.00 | Window Closed / Lapsed |