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US4735812A Expired / Lapsed US ⏱️ 0.0 years remaining

Food browning agent

Assignee: DVRO Ltd
•
Filing: 1986-04-28
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Granted: 1988-04-05
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Expires: 2006-04-28
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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)

US4426443A Cited
US4528204A Cited
US4448791A Cited
US4518618A Cited
US4547377A Cited

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

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