US4083779A
Expired / Lapsed
US
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Process for treatment of anthocyane extracts
Assignee: Etudes Fab et Com Colorants Alimentaires
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Filing: 1976-07-21
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Granted: 1978-04-11
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Expires: 1996-07-21
Abstract
Abstract A method of treatment of an anthocyanic extract, characterized in that it mainly comprises an ultrafiltration stage which consists in separating from said extract by ultrafiltration, on the one hand a liquid filtrate which passes through an ultrafilter membrane and on the other hand a first concentrate containing more condensed forms of anthocyanins, and a reverse osmosis stage which consists in separating from said filtrate by reverse osmosis, on the one hand a diffusate which passes through a reverse osmosis membrane and on the other hand a second concentrate which contains less condensed forms of anthocyanins.
Inventors
- 👤 Pierre Combe
- 👤 Jean Ladet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:51
CPC Classifications
C; C12; C12F; C12F3/00; C12F3/06; A; A23; A23L; A23L5/00; A23L5/40; A23L5/42; A23L5/43; B; B01; B01D; B01D61/00; B01D61/58; B01D61/02; B01D61/025; B01D61/14; B01D61/145
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
100 words
A method of treatment of an anthocyanic extract consisting essentially of an ultrafiltration stage which consists essentially of separating from said extract by ultrafiltration a liquid filtrate which passes through an ultrafilter membrane and a first concentrate containing more condensed forms of anthocyanins, which first concentrate is collected as a first dryable coloring agent, and a reverse osmosis stage consisting essentially of separating from said liquid filtrate by reverse osmosis a diffusate which passes through a reverse osmosis membrane and a second concentrate which contains less condensed forms of anthocyanins and collecting said second concentrate as a second coloring agent.
Claim 2
Independent Claim
100 words
A method of treatment of an anthocyanic extract consisting essentially of an ultrafiltration stage which consists essentially of separating from said extract by ultrafiltration a liquid filtrate which passes through an ultrafilter membrane and a first concentrate containing more condensed forms of anthocyanins, which first concentrate is collected as a first dryable coloring agent, and a reverse osmosis stage consisting essentially of separating from said liquid filtrate by reverse osmosis a diffusate which passes through a reverse osmosis membrane and a second concentrate which contains less condensed forms of anthocyanins and collecting said second concentrate as a second coloring agent.
Claim 3
Dependent Claim
17 words
A method in accordance with claim 1, wherein said anthocyanic extract is an extract produced from grapes.
Claim 4
Dependent Claim
18 words
A method in accordance with claim 1, characterized in that the anthocyanic extract is in a water-alcohol medium.
Claim 5
Dependent Claim
19 words
A method in accordance with claim 3, characterized in that the treated extract is obtained from fermentation grape marcs.
Claim 6
Dependent Claim
24 words
A method in accordance with claim 1, wherein said first concentrate from said ultrafiltration stage is subsequently dried in the form of a powder.
Claim 7
Dependent Claim
36 words
A method in accordance with claim 1, further comprising at least one precipitation stage of any tartrates present in said extract wherein said tartrates are precipitated prior to reverse osmosis and the formed precipitate is eliminated.
Claim 8
Dependent Claim
28 words
A method in accordance with claim 6, characterized in that the separation of the tartrates is carried out in two precipitation stages respectively prior to and after ultrafiltration.
Claim 9
Dependent Claim
79 words
A method in accordance with claim 1, characterized in that the ultrafiltration membrane has a cutoff point within the range of 1000 to 70,000 (molecular weight), ultrafiltration is carried out at a pressure from 2 to 40 kg/cm 2 , the reverse osmosis membrane has powers of retention ranging from 30 to 99% for NaCl, from 70 to 99.8% for CaCl 2 , and reverse osmosis is carried out at a pressure from 10 to 100 kg/cm 2 .
Claim 10
Dependent Claim
25 words
A method in accordance with claim 8, characterized in that ultrafiltration is carried out at a pressure of the order of 15 kg/cm 2 .
Claim 11
Dependent Claim
40 words
A method in accordance with claim 8, characterized in that the reverse osmosis membrane has powers of retention ranging from 50 to 90% in the case of NaCl, and from 75 to 99.7% in the case of CaCl 2 .
Claim 12
Dependent Claim
63 words
A method in accordance with claim 8, characterized in that the characteristics of the reverse osmosis membrane are of the order of 85% retention in the case of NaCl, 99.5% retention in the case of CaCl 2 , 100% retention in the case of saccharose, and the reverse osmosis is carried out at a pressure of the order of 50 kg/cm 2 .
Claim 13
Dependent Claim
30 words
A method in accordance with claim 1, wherein said extract is produced from a fermentation marc and further comprising a recovery of alcohol by distillation of the reverse osmosis diffusate.
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) | 1981-04-10 | 1981-10-10 | 1982-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-10 | 1985-10-10 | 1986-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-10 | 1989-10-10 | 1990-04-11 | $7700.00 | Window Closed / Lapsed |