US5360730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Zeaxanthin producing strains of Neospongiococcum Excentricum
Assignee: ZGI II Inc
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Filing: 1991-10-15
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Granted: 1994-11-01
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Expires: 2011-10-15
Abstract
Abstract The present invention is directed toward a process for producing zeaxanthin which includes mutating algal microorganisms, selecting from said mutated microorganisms a microorganism capable of producing zeaxanthin, culturing the selected microorganism in an effective medium to produce zeaxanthin, and recovering zeaxanthin produced by the selected microorganism. The present invention also provides microorganisms capable of producing zeaxanthin, formulations containing zeaxanthin produced by the disclosed process and the use of such formulations to enhance pigmentation and to reduce damage caused by reactive oxygen species and phototoxic molecules.
Inventors
- 👤 Steve A. Orndorff
- 👤 Elizabeth A. Campbell
- 👤 Richard D. Medwid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:28
CPC Classifications
C; C12; C12P; C12P23/00; C12N; C12N1/00; C12N1/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
58 words
A zeaxanthin-producing algal microorganism selected from the group consisting of a microorganism having all of the identifying characteristics of Neospongiococcum excentricum HZ 1236/274, ATCC No. 74108; HZ 1236/437, ATCC No. 74109: HZ 1236/538, ATCC No. 74107, and a mutant thereof, wherein said mutant is capable of producing at least about 1.75 mg zeaxanthin per gram dry cell weight.
Claim 2
Dependent Claim
58 words
A zeaxanthin-producing algal microorganism selected from the group consisting of a microorganism having all of the identifying characteristics of Neospongiococcum excentricum HZ 1236/274, ATCC No. 74108; HZ 1236/437, ATCC No. 74109: HZ 1236/538, ATCC No. 74107, and a mutant thereof, wherein said mutant is capable of producing at least about 1.75 mg zeaxanthin per gram dry cell weight.
Claim 3
Dependent Claim
64 words
A zeaxanthin-containing formulation comprising a mutated algal microorganism which is selected from the group consisting of a microorganism having all of the identifying characteristics of Neospongiococcum excentricum HZ 1236/274, ATCC No. 74108; HZ 1236/437, ATCC No. 74109; HZ 1236/538. ATCC No. 74107, and a mutant thereof, wherein said mutant is capable of producing at least about 1.75 mg zeaxanthin per gram dry cell weight.
Claim 4
Dependent Claim
64 words
A zeaxanthin-containing formulation comprising a mutated algal microorganism which is selected from the group consisting of a microorganism having all of the identifying characteristics of Neospongiococcum excentricum HZ 1236/274, ATCC No. 74108; HZ 1236/437, ATCC No. 74109; HZ 1236/538. ATCC No. 74107, and a mutant thereof, wherein said mutant is capable of producing at least about 1.75 mg zeaxanthin per gram dry cell weight.
References Cited (Backward Citations)
US2949700A
Cited
US2974044A
Cited
US3206316A
Cited
US3108402A
Cited
US3280502A
Cited
US3539686A
Cited
US3681082A
Cited
US3891504A
Cited
US3841967A
Cited
US3951743A
Cited
US3951742A
Cited
SU1071636A1
Cited
EP0393690A1
Cited
WO1991003571A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-10-31 | 1998-05-02 | 1998-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-10-31 | 2002-05-02 | 2002-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-10-31 | 2006-05-02 | 2006-11-01 | $7700.00 | Window Closed / Lapsed |