US4012531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for extracting antioxydants
Assignee: Nestec SA
•
Filing: 1974-10-15
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Granted: 1977-03-15
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Expires: 1994-10-15
Abstract
Abstract Antioxidant substances are disclosed. These substances are obtained by extraction of an organic plant material with an aqueous basic solution having a pH-value of from 7 to about 11.5, separation of insoluble material, and collection of the soluble fraction containing the antioxidant substances.
Inventors
- 👤 Rinantonio Viani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:33
CPC Classifications
C; C09; C09K; C09K15/00; C09K15/34; A; A23; A23B; A23B2/00; A23B2/70; A23B2/704; A23B2/725; A23B2/729; A23B2/733; A23B2/788; A23L; A23L27/00; A23L27/10; A23L27/11
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
56 words
A process for extracting antioxidant substances from an organic plant material of the Labiate or Umbellifer family containing them, wherein the organic material is treated with an aqueous basic buffer solution with a pH value of from 7 to about 11.5, the insoluble fraction is separated and the soluble fraction containing the antioxidant substances is collected.
Claim 2
Dependent Claim
56 words
A process for extracting antioxidant substances from an organic plant material of the Labiate or Umbellifer family containing them, wherein the organic material is treated with an aqueous basic buffer solution with a pH value of from 7 to about 11.5, the insoluble fraction is separated and the soluble fraction containing the antioxidant substances is collected.
Claim 3
Dependent Claim
16 words
a process as claimed in claim 1, wherein the buffer solution is a sodium bicarbonate solution.
Claim 4
Dependent Claim
16 words
A process as claimed in claim 1, wherein the buffer solution is a potassium bicarbonate solution.
Claim 5
Dependent Claim
16 words
A process as claimed in claim 1, wherein the buffer solution is a disodium phosphate solution.
Claim 6
Dependent Claim
23 words
A process as claimed in claim 1, wherein extraction is carried out at a temperature in the range from 40° to 90° C.
Claim 7
Dependent Claim
16 words
A process as claimed in claim 1, wherein extraction is carried out under a nitrogen atmosphere.
Claim 8
Dependent Claim
18 words
A process as claimed in claim 1, wherein the soluble fraction is treated to eliminate the mineral salts.
Claim 9
Dependent Claim
13 words
A process as claimed in claim 1, wherein the soluble fraction is acidified.
Claim 10
Dependent Claim
23 words
A process as claimed in claim 8, wherein the antioxidant substances are extracted from the acidified soluble fraction with an organic water-immiscible solvent.
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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) | 1980-03-14 | 1980-09-13 | 1981-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-14 | 1984-09-13 | 1985-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-14 | 1988-09-13 | 1989-03-15 | $7700.00 | Window Closed / Lapsed |