Patent US3917865A successfully refreshed from Google Patents.
US3917865A
Expired / Lapsed
US
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Co-distillation method for recovering volatile flavor compounds from citrus essence oils
Assignee: United States Department of Agriculture
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Filing: 1974-01-28
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Granted: 1975-11-04
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Expires: 1994-01-28
Abstract
Abstract A process for recovering volatile flavor compounds from citrus essence oils is disclosed. The concentrated flavor fraction is both anhydrous and water-soluble and is useful in imparting to citrus juices and other beverages a ''''fresh'''' flavoring without increasing oil or water content of these products.
Inventors
- 👤 Philip E Shaw
- 👤 Richard L Coleman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:27
CPC Classifications
A; A23; A23L; A23L27/00; A23L27/10; A23L27/12; A23L27/13
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
76 words
A PROCESS FOR OBTAINING A VOLATILE, WATER-SOLUBLE CONCENTRATED FLAVOR FRACTION FROM CITRUS ESSENCE OIL, THE PROCESS COMPRISING: A. FORMING AN ANHYDROUS SOLUTION OF SAID ESSENCE OIL AND A LOW BOILING SOLVENT SELECTED FROM THE GROUP CONSISTING OF ACETONE, METHANOL, ETHANOL AND A NONTOXIC FLORINATED HYDROCARBON, B. DISTILLING THE SOLUTION AT ABOUT 2.7 TO 3.3 MILLIMETERS OF MERCURY AND ABOUT 26* TO 33* C., AND C. RECOVERING THE MOST VOLATILE ABOUT 2.2% BY WEIGHT OF THE SOLUTION.
Claim 2
Dependent Claim
76 words
A PROCESS FOR OBTAINING A VOLATILE, WATER-SOLUBLE CONCENTRATED FLAVOR FRACTION FROM CITRUS ESSENCE OIL, THE PROCESS COMPRISING: A. FORMING AN ANHYDROUS SOLUTION OF SAID ESSENCE OIL AND A LOW BOILING SOLVENT SELECTED FROM THE GROUP CONSISTING OF ACETONE, METHANOL, ETHANOL AND A NONTOXIC FLORINATED HYDROCARBON, B. DISTILLING THE SOLUTION AT ABOUT 2.7 TO 3.3 MILLIMETERS OF MERCURY AND ABOUT 26* TO 33* C., AND C. RECOVERING THE MOST VOLATILE ABOUT 2.2% BY WEIGHT OF THE SOLUTION.
Claim 3
Dependent Claim
24 words
The process of claim 1 wherein the essence oil is obtained from citrus selected from the group consisting of grapefruit, tangerine, lemon and lime.
Claim 4
Dependent Claim
10 words
The process of claim 1 wherein the solvent is acetone.
Claim 5
Dependent Claim
13 words
The process of claim 1 wherein the solvent is a nontoxic fluorinated hydrocarbon.
Claim 6
Dependent Claim
24 words
The process of claim 1 wherein the solvent is ethanol at a concentration of about 1.8% by weight in the solution of step (a).
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) | 1978-11-03 | 1979-05-05 | 1979-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-03 | 1983-05-05 | 1983-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-03 | 1987-05-05 | 1987-11-04 | $7700.00 | Window Closed / Lapsed |