Patent US4735812A successfully refreshed from Google Patents.
US4735812A
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Food browning agent
Assignee: DVRO Ltd
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Filing: 1986-04-28
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Granted: 1988-04-05
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Expires: 2006-04-28
Abstract
Abstract A browning agent particularly for use in microwave cooking comprises collagen, or gelatine hydrolyzed to its constitutent amino acids, plus one or more reducing sugars and alkalis. The collagen preferably is derived from bovine hides. The alkali is preferably a mixture of sodium carbonate and bicarbonate. The browning agent is capable of browning at 1000 DEG C. or less, down to about 70 DEG C. It may be incorporated into a film or used as a powder or a liquid.
Inventors
- 👤 Ian Bryson
- 👤 Ian A. Easton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:24
CPC Classifications
A; A23; A23J; A23J3/00; A23J3/30; A23J3/32; A23J3/34; A23J3/341; A23J3/342; A23L; A23L27/00; A23L27/20; A23L27/21; A23L27/215; A23L5/00; A23L5/40; A23L5/42; A23L5/47; A23L5/48
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
185 words
A food browning composition or agent, which is substantially colorless at ambient temperature, but browns when applied to uncooked meat, fish and poultry products or products derived therefrom and is then heated to a temperature of 70° C. or higher in a microwave oven whereby the resultant cooked product appears as though it had been cooked by conventional oven cooking methods, said food browning composition or agent comprising a mixture of the following three required types of ingredients: (1) collagen or gelatin which has been substantially completely hydrolysed to its constituent amino acids containing no or substantially low levels of sulfur containing amino acids; (2) one or more reducing sugar(s) selected from the group consisting of ketose(s), aldose(s), pentose(s), hexose(s), or mixtures thereof; and, (3) one or more alkali(s) or mixtures thereof, wherein the aforesaid three types of ingredients are present in amounts such that the molar ratio of reducing sugar(s) to amino acids is between 1:1 and 4:1, and the alkali(s) is present in such amount as required so that the pH of the food browning composition or agent is between 7.0 and 10.0.
Claim 2
Dependent Claim
185 words
A food browning composition or agent, which is substantially colorless at ambient temperature, but browns when applied to uncooked meat, fish and poultry products or products derived therefrom and is then heated to a temperature of 70° C. or higher in a microwave oven whereby the resultant cooked product appears as though it had been cooked by conventional oven cooking methods, said food browning composition or agent comprising a mixture of the following three required types of ingredients: (1) collagen or gelatin which has been substantially completely hydrolysed to its constituent amino acids containing no or substantially low levels of sulfur containing amino acids; (2) one or more reducing sugar(s) selected from the group consisting of ketose(s), aldose(s), pentose(s), hexose(s), or mixtures thereof; and, (3) one or more alkali(s) or mixtures thereof, wherein the aforesaid three types of ingredients are present in amounts such that the molar ratio of reducing sugar(s) to amino acids is between 1:1 and 4:1, and the alkali(s) is present in such amount as required so that the pH of the food browning composition or agent is between 7.0 and 10.0.
Claim 3
Dependent Claim
14 words
A composition according to claim 1 where the collagen is derived from animal hides.
Claim 4
Dependent Claim
14 words
A composition according to claim 2 where the collagen is derived from bovine hides.
Claim 5
Dependent Claim
21 words
A composition according to claim 3 in the form of a powder, a paste, a solution or incorporated in a film.
Claim 6
Dependent Claim
28 words
A food browning composition incorporated in a film according to claim 4, wherein the film is made of collagen or of a film forming protein or carbohydrate material.
Claim 7
Dependent Claim
20 words
A food browning composition incorporated in a film according to claim 5, wherein the film is a collagen sausage casing.
Claim 8
Dependent Claim
21 words
A food browning composition according to claim 3, wherein the alkali used is sodium carbonate, sodium bicarbonate or a mixture thereof.
Claim 9
Dependent Claim
18 words
A food browning composition according to claim 3, wherein the reducing sugar used is glucose, fructose or maltose.
Claim 10
Dependent Claim
35 words
A food browning composition according to claim 8 having the following composition. ______________________________________
Ingredient % By Weight
______________________________________
Acid Hydrolysed Collagen
16.7
Glucose 29.6
Sodium bicarbonate 23.1
Sodium carbonate 13.9
Locust Bean Gum 16.7
______________________________________
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) | 1991-04-05 | 1991-10-05 | 1992-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-05 | 1995-10-05 | 1996-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-05 | 1999-10-05 | 2000-04-05 | $7700.00 | Window Closed / Lapsed |