US3616221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Enzyma method for converting glucose in glucose syrups to fructose
Assignee: National Institute of Advanced Industrial Science and Technology
•
Filing: 1969-01-02
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Granted: 1971-10-26
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Expires: 1989-01-02
Abstract
Abstract Glucose in a glucose syrup is transformed into fructose, in high yields, by reaction with glucose isomerizing enzyme derived from micro-organisms which are characterized as having the ability to assimilate xylan to produce a glucose isomerizing enzyme.
Inventors
- 👤 Yoshiyuki Takasaki
- 👤 Osamu Tanabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:40
CPC Classifications
C; C12; C12P; C12P19/00; C12P19/24; C12N; C12N9/00; C12N9/90; C12N9/92; C13; C13K; C13K11/00; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/886; Y10S435/887
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
26 words
The process, as set forth in claim 1, wherein said enzyme was derived from a micro-organism which was cultured on a media containing xylan or D-xylose.
Claim 2
Dependent Claim
39 words
The process, as set forth in claim 2, wherein said glucose-containing solution containing the added enzyme, is maintained at a temperature between about 45* C. and about 80* C., and at a pH between about 5.5 and about 8.0.
Claim 3
Dependent Claim
44 words
The process, as set forth in claim 2, wherein said micro-organism is selected from the group consisting of Streptomyces flavovirens ATCC No. 3320, Streptomyces achromogenus ATCC No. 12767, Streptomyces echinatus ATCC No. 21133, Streptomyces wedmorensis ATCC No. 21230, and Streptomyces albus ATCC No. 21132.
Claim 4
Dependent Claim
14 words
The process, as set forth in claim 3, wherein said glucose-containing solution comprises hydrol.
Claim 5
Dependent Claim
27 words
The process, as set forth in claim 1, wherein said micro-organisms is cultivated in a medium containing pure xylan or in a medium containing a xylan-containing material.
Claim 6
Dependent Claim
44 words
The process, as set forth in claim 3, wherein said micro-organism is selected from the group consisting of Streptomyces flavovirens ATCC No. 3320, Streptomyces achromogenus ATCC No. 12767, Streptomyces echinatus ATCC No. 21133, Streptomyces wedmorensis ATCC No. 21230, and Streptomyces albus ATCC No. 21132.
Claim 7
Dependent Claim
27 words
The process, as set forth in claim 4, wherein said micro-organism is cultivated in a medium containing pure xylan or in a medium containing a xylan-containing material.
Claim 8
Dependent Claim
17 words
The process, as set forth in claim 2, wherein said micro-organism is Streptomyces flavovirens ATCC No. 3320.
Claim 9
Dependent Claim
17 words
The process, as set forth in claim 2, wherein said micro-organism is Streptomyces achromogenus ATCC No. 12767.
Claim 10
Dependent Claim
17 words
The process, as set forth in claim 2, wherein said micro-organism is Streptomyces echinatus ATCC No. 21133.
Claim 11
Dependent Claim
17 words
The process, as set forth in claim 2, wherein said micro-organism is Streptomyces wedmorensis ATCC No. 21230.
Claim 12
Dependent Claim
17 words
The process, as set forth in claim 2, wherein said micro-organism is Streptomyces albus ATCC No. 21132.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |