US4632837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of concentrated extracts from plants
Assignee: Haarmann and Reimer GmbH
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Filing: 1984-09-18
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Granted: 1986-12-30
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Expires: 2004-09-18
Abstract
Abstract The present invention provides a process for the production of concentrated extracts from fresh plants or parts thereof by extraction with carbon dioxide at supercritical pressure, wherein the extraction is carried out at 0° to 40° C. and the separation of the concentrated extract is carried out at a subcritical temperature and subcritical pressure.
Inventors
- 👤 Erwin Schutz
- 👤 Heinz-Rudiger Vollbrecht
- 👤 Klaus Sandner
- 👤 Theodor Sand
- 👤 Peter Muhlnickel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:19
CPC Classifications
B; B01; B01D; B01D11/00; B01D11/02; B01D11/0203; A; A23; A23L; A23L27/00; A23L27/10; A23L27/11
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
80 words
Process for the production of a concentrated extract of odor and aroma components from fresh plants or plant parts containing these components, comprising the steps of completely isolating the flavor and aroma components by extracting in a single stage extraction, plants or plant parts having a water content of 30% or more, with carbon dioxide at super-critical pressure and at a temperature of from 0° to 40° C., and then separating the concentrated extract at sub-critical temperature and sub-critical pressure.
Claim 2
Dependent Claim
80 words
Process for the production of a concentrated extract of odor and aroma components from fresh plants or plant parts containing these components, comprising the steps of completely isolating the flavor and aroma components by extracting in a single stage extraction, plants or plant parts having a water content of 30% or more, with carbon dioxide at super-critical pressure and at a temperature of from 0° to 40° C., and then separating the concentrated extract at sub-critical temperature and sub-critical pressure.
Claim 3
Dependent Claim
21 words
Process as claimed in claim 1, wherein the extraction is carried out at a temperature of from 0° to 31° C.
Claim 4
Dependent Claim
21 words
Process as claimed in claim 1, wherein the extraction is carried out at a pressure of from 80 to 200 bars.
Claim 5
Dependent Claim
24 words
Process as claimed in claim 1, wherein the separation of the extract is carried out at a pressure of from 20 to 60 bars.
Claim 6
Dependent Claim
24 words
Process as claimed in claim 1, wherein the separation of the extract is carried out at a temperature of from -20° to +31° C.
Claim 7
Dependent Claim
24 words
Process as claimed in claim 1, wherein the separation of the extract is carried out at a temperature of from 0° to 20° C.
Claim 8
Dependent Claim
19 words
Process as claimed in claim 1, wherein the extract is freed from water by treatment with a volatile solvent.
Claim 9
Dependent Claim
12 words
Process as claimed in claim 1, wherein whole fresh plants are extracted.
Claim 10
Dependent Claim
27 words
Process as claimed in claim 1, wherein chopped fresh dill is extracted at a pressure of about 120 bars and at a temperature of about 25° C.
References Cited (Backward Citations)
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GB1388581A
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JPS56109568A
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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) | 1989-12-29 | 1990-06-30 | 1990-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-12-29 | 1994-06-30 | 1994-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-12-29 | 1998-06-30 | 1998-12-30 | $7700.00 | Window Closed / Lapsed |