Patent US3901875A successfully refreshed from Google Patents.
US3901875A
Expired / Lapsed
US
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Extraction of ginseng saponin
Assignee: Amorepacific Corp
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Filing: 1973-03-26
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Granted: 1975-08-26
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Expires: 1993-03-26
Abstract
Abstract A process for the extraction of total ginseng saponin from crude ginseng leaves and flowers comprising contacting said crude ginseng with an alcohol, separating said alcohol from the extracted residue, contacting said extracted residue with a first solvent comprising benzene, chloroform or ether, separating said first solvent to leave a solvent residue, contacting said solvent residue with a second solvent comprising butanol or amyl alcohol to form a solution, passing said solution through an acidic alumina column, and separating said second solvent from said ginseng saponin. Preferably, the first solvent may contain butanol or ether acetate as a secondary solvent.
Inventors
- 👤 Woo Chang Park
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:44
CPC Classifications
A; A61; A61K; A61K36/00; A61K36/18; A61K36/185; A61K36/25; A61K36/258
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
92 words
A PROCESS FOR THE EXTRACTION OF TOTAL GINSENG SAPONIN FROM CRUDE GINSENG LEAVES AND FLOWERS CONSISTING ESSENTIALLY OF CONTACTING SAID CRUDE GINSENG WITH AN ALCOHOL, SEPARATING SAID ALCOHOL FROM THE EXTRACTED RESIDUE, CONTACTING SAID EXTRACTED RESIDUE WITH A FIRST SOLVENT COMPRISING BENZENE, CHLOROFORM OR ETHER AS A PRIMARY SOLVENT, SEPARATING SAID FIRST SOLVENT TO LEAVE A SOLVENT RESIDUE, CONTACTING SAID SOLVENT RESIDUE WITH A SECOND SOLVENT COMPRISING BUTANOL OR AMYL ALCOHOL TO FORM A SOLUTION, PASSING SAID SOLUTION THROUGH AN ACIDIC ALMINA COLUMN, AND SEPARATING SAID SECOND SOLVENT FROM SAID GINSENG SAPONIN.
Claim 2
Dependent Claim
92 words
A PROCESS FOR THE EXTRACTION OF TOTAL GINSENG SAPONIN FROM CRUDE GINSENG LEAVES AND FLOWERS CONSISTING ESSENTIALLY OF CONTACTING SAID CRUDE GINSENG WITH AN ALCOHOL, SEPARATING SAID ALCOHOL FROM THE EXTRACTED RESIDUE, CONTACTING SAID EXTRACTED RESIDUE WITH A FIRST SOLVENT COMPRISING BENZENE, CHLOROFORM OR ETHER AS A PRIMARY SOLVENT, SEPARATING SAID FIRST SOLVENT TO LEAVE A SOLVENT RESIDUE, CONTACTING SAID SOLVENT RESIDUE WITH A SECOND SOLVENT COMPRISING BUTANOL OR AMYL ALCOHOL TO FORM A SOLUTION, PASSING SAID SOLUTION THROUGH AN ACIDIC ALMINA COLUMN, AND SEPARATING SAID SECOND SOLVENT FROM SAID GINSENG SAPONIN.
Claim 3
Dependent Claim
25 words
A process according to claim 1 wherein said first solvent contains 1 to 10% by weight of butanol or ethyl acetate as a secondary solvent.
Claim 4
Dependent Claim
11 words
A process according to claim 1 wherein said alcohol is methanol.
Claim 5
Dependent Claim
12 words
A process according to claim 1 wherein said primary solvent is benzene.
Claim 6
Dependent Claim
12 words
A process according to claim 1 wherein said primary solvent is ether.
Claim 7
Dependent Claim
13 words
A process according to claim 1 wherein said second solvent is amyl alcohol.
Claim 8
Dependent Claim
17 words
A process according to claim 1 wherein said second solvent is separated by evaporation under subatmospheric pressure.
Claim 9
Dependent Claim
12 words
A process according to claim 1 wherein said second solvent is butanol.
Claim 10
Dependent Claim
12 words
A process according to claim 1 wherein butanol is a secondary solvent.
Claim 11
Dependent Claim
13 words
A process according to claim 1 wherein ethyl acetate is a secondary solvent.
Claim 12
Dependent Claim
12 words
A process according to claim 1 wherein said second solvent is butanol.
Claim 13
Dependent Claim
27 words
A process according to claim 2 wherein said alcohol is methanol, said primary solvent is benzene, said secondary solvent is butanol, and said second solvent is butanol.
References Cited (Backward Citations)
US3510472A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |