US4604309A
Expired / Lapsed
US
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Food casing which will transfer a smoke color to food encased therein and extracted natural liquid smoke colorant for use therewith
Assignee: Teepak Investments Inc
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Filing: 1982-05-19
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Granted: 1986-08-05
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Expires: 2002-05-19
Abstract
Abstract The invention relates to the solvent extraction of smoke colorant from natural liquid smoke. In accordance with the invention, the known acidic liquid smokes which are formed by contacting burning wood smoke with water are neutralized to separate tarry materials and form neutral storage stable liquid colorants which are capable of passing through regenerated cellulose sausage casings during cooking to color the meat and further do not cause deterioration of the casing during storage.
Inventors
- 👤 Michael S. Goldberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:51
CPC Classifications
A; A22; A22C; A22C13/00; A22C13/0013; A23; A23L; A23L27/00; A23L27/20; A23L27/27; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1324
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
61 words
A casing for meat products comprising a tube, impregnated with a colorant, said colorant formed by neutralizing an aqueous natural liquid smoke coloring solution, with a solution consisting essentially of water soluble alkaline neutralizing agent, to a pH of from about 6 to about 8 to precipitate a substantial portion of tar materials contained therein and removing said precipitated tar materials.
Claim 2
Dependent Claim
61 words
A casing for meat products comprising a tube, impregnated with a colorant, said colorant formed by neutralizing an aqueous natural liquid smoke coloring solution, with a solution consisting essentially of water soluble alkaline neutralizing agent, to a pH of from about 6 to about 8 to precipitate a substantial portion of tar materials contained therein and removing said precipitated tar materials.
Claim 3
Dependent Claim
15 words
The casing of claim 1 wherein said casing is a tube and comprises regenerated cellulose.
Claim 4
Dependent Claim
13 words
The casing of claim 2 wherein said tube comprises fibrous reinforced regenerated cellulose.
Claim 5
Dependent Claim
11 words
The casing of claim 1 wherein the colorant is storage stable.
Claim 6
Dependent Claim
11 words
The casing of claim 1 wherein said colorant further comprises glycerin.
Claim 7
Dependent Claim
15 words
The casing of claim 1 having a pH of between about 7 and about 8.
Claim 8
Dependent Claim
18 words
The casing of claim 1 wherein said colorant is impregnated on the exterior and interior of said tube.
Claim 9
Dependent Claim
16 words
The casing of claim 1 wherein said colorant is derived from commercially available natural liquid smokes.
Claim 10
Dependent Claim
14 words
The casing of claim 1 wherein said colorant further comprises an FDA approved colorant.
Claim 11
Independent Claim
88 words
The method of forming a storage stable regenerated cellulose casing which is capable of imparting a smoke color to a meat product cooked therein comprising providing a regenerated cellulose food casing and impregnating said casing with a neutralized natural smoke colorant formed by neutralizing an aqueous natural liquid smoke coloring solution, with a solution consisting essentially of water soluble alkaline neutralizing agent, to a pH of from about 6 to about 8 to precipitate a substantial portion of tar materials contained therein and removing said precipitated tar materials.
Claim 12
Independent Claim
88 words
The method of forming a storage stable regenerated cellulose casing which is capable of imparting a smoke color to a meat product cooked therein comprising providing a regenerated cellulose food casing and impregnating said casing with a neutralized natural smoke colorant formed by neutralizing an aqueous natural liquid smoke coloring solution, with a solution consisting essentially of water soluble alkaline neutralizing agent, to a pH of from about 6 to about 8 to precipitate a substantial portion of tar materials contained therein and removing said precipitated tar materials.
Claim 13
Dependent Claim
29 words
The method of claim 10 wherein said smoke colorant is extracted from aqueous natural smoke colorants by solvent extraction with an organic solvent and neutralized with an alkaline material.
Claim 14
Dependent Claim
20 words
The method of claim 10 wherein said neutralized smoke colorant has a pH of between about 7 and about 8.
Claim 15
Dependent Claim
24 words
The method of claim 10 wherein said colorant further comprises an element selected from the group consisting of propylene glycol, glycerin and mixtures thereof.
Claim 16
Dependent Claim
20 words
The method of claim 10 in which the colorant has been applied to the outside of the casing by dipping.
Claim 17
Dependent Claim
10 words
The method of claim 10 wherein said casing is shirred.
Claim 18
Dependent Claim
13 words
The method of claim 10 wherein said casing comprises fibrous reinforced regenerated cellulose.
Claim 19
Dependent Claim
26 words
A food product comprising a meat product the surface of which is colored by a neutralized natural liquid smoke colorant from a casing of claim 1.
Claim 20
Dependent Claim
17 words
The food product of claim 17 wherein said food product is a sausage, smoke colored during cooking.
Claim 21
Dependent Claim
13 words
The food product of claim 17 wherein said food product comprises a frankfurter.
Claim 22
Dependent Claim
25 words
The food product of claim 17 wherein said food product was cooked in a strippable casing comprising a neutralized solvent extracted natural liquid smoke colorant.
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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) | 1989-08-04 | 1990-02-03 | 1990-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-04 | 1994-02-03 | 1994-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-04 | 1998-02-03 | 1998-08-05 | $7700.00 | Window Closed / Lapsed |