CA1167312A - Dog food flavors - Google Patents
Dog food flavorsInfo
- Publication number
- CA1167312A CA1167312A CA000323859A CA323859A CA1167312A CA 1167312 A CA1167312 A CA 1167312A CA 000323859 A CA000323859 A CA 000323859A CA 323859 A CA323859 A CA 323859A CA 1167312 A CA1167312 A CA 1167312A
- Authority
- CA
- Canada
- Prior art keywords
- palatability
- dog food
- dog
- inosine
- triphosphate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
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- Fodder In General (AREA)
Abstract
ABSTRACT The present invention identifies certain com-pounds, naturally present in raw meat, which are especially taste active in the dog. These compounds, which have been found to maximally activate taste neurons, are L-proline. L-cysteine, L-histidine. L-lysine, inosine 5'-triphosphate (ITP), inosine 5'-diphospbate (IDP), and adenosine 5'-triphosphate (ATP). Application of these compounds to dog foods in effective amounts can increase their palatability for dogs.
Description
1 1~73~2 DESCRIPTIO~I
` DOG FOOD FLAVORS
.
Technical Field , The present invention relates to dog food flavors and more particularly to dog foods having increased palatability due to these flavors and methods for producing the dog foods in increased palatability.
Back~round Art There is a continuing effort being made to de-velop processes and formulations which increase thepalatability of dog foods while at the same time maintaining their nutritional value. While by it-self the development of nutritious dog foods is quite well understood and poses few problems to the art, there is a continuing problem of making these formulations palatable. Where an offered food is unpalatable, a dog may pass it up and thereby not take advantage of its nutritional va:Lue.
Many attempts have been made to obtain increas-ed palatability of pet foods by the addition of a variety of materials. In U.S. 3,653,908 to Buck et al, it is disclosed that amino acids in general can improve palatability when included in cat foods, especially when reacted with reducing sugars. In another recent patent, U.S. 3,857,968 to G. J. Haas et al., there is disclosed a process for improving the palatability of animal foods based on an ~, 1 ~873t2 enzymatic hydrolysate of a fat and protein. Also,recent U.S. Patent 3,830,798 discloses a method for hydrolyzing ribonucleic acid for addition to dog foods, and U.S. Patent 3,832,~71 discloses the use of 5'-nucleotide containing flavors for cat foods.
Numerous other patents and publications also indicate a need for, and a keen interest in, improv-ing the palatability of dog foods.
Summary of the Invention Accordingly, the present invention provides dog foods of improved palatability.
Further, the present invention provides a pro-cess for improving the palatability of dog foods.
The present invention is accomplished by incor-porating an effective amount of a palatabilityenhancing material selected from the group consist-ing of L-proline, L-cysteine, L-histidine, L-lysine, inosine 5'-triphosphate (ITP), inosine 5'-diphosphate (IDP), and adenosine 5'-triphosphate (ATP), or a combination of these, into the dog food formulation.
Significant palatability boosts can be obtained by feeding dog foods improved by these palatability enhancers to dogs.
Detailed Description of the Invention The term "palatability" is broad and encom-passes all of the various properties of the foods sensed by the dog. Among these properties are tex-ture, taste and aroma. It is believed that the pre-sent invention increases the overall palatability of a dog food by improving the taste of the food through the introduction of highly pronounced levels of those raw meat flavor notes Most preferred by dogs. Thus, the compounds identified according to this invention are referred to herein alternatively as dog food flavors or palatability enhancers.
1~673~2 The compounds identified by this, i.e., L-proline, L-cysteine, L-histidine, L-lysine, inosine 5'-triphosphate, (ITP), inosine 5'-diphosphate (IDP~, and adenosine 5'-triphosphate (ATP), can - 5 improve the attractiveness and acceptance by dogs, of a variety of foods formulated for them. Among these foods are the conventional dry, intermediate-moisture and canned dog foods of conventional formulation as well as soups or gravies for use alone or in combination with any of the other dog food forms. Typical formulations of dry dog foods and their methods of preparation are those described in U.S. Patents 3,365,297 and 3,330,503; especially suitable use of the present invention can be made where the meat contents of these foods is ~educed or eliminated. Typical of the intermediate-moisture dog foods are those described in U.'S. Patent 3,202,514 to Burgess et al. and United Kingdom Patent 1,151,991.
20' Especially suitable among the dog foods which can be improved by the dog food flavors or palatabil,ity enhancers identified according to the present invention, are soups and gravies for dog use., These soups and gravies can consist of, or consist essentially of, water and effective flavor-ing amounts of the dog food flavors. Plain water solutions of the pet food flavors identified by the present invention cause strong taste responses by , 30 dogs. For gravies, a bland thickening medium will ordinarily be employed, and such thickeners can also be employed in soups. Among the suitable bland thickeners are those hydrophilic colloids, such as carboxymethyl cellulose, sodium alginate, kelp-derived gums, and the like, which are known in the ~ 167312 art. The foods if desired can be full-feeding, nutritionally balanced dog foods containing protein, fat, carbohydrates, vitamins and minerals, so long as the complex formulations do not present their own flavor profiles which totally mask or obscure the flavors applied according to this invention.
When employed with a solid dog food of the types mentioned above, -the dog food flavor composi-tions of this invention are desirably coated on the outside of the food, and preferably are applied in a manner which allows their release into any water used for hydration. Where the dog food has an exterior fat coating, the flavor compound is prefer-ably applied to the exterior of the fat coating.
The dog food flavors can also be incorporated in-teriorly of the food, such as by simple mixing with the other ingredients during preparation. However, because this generally causes excessive losses in the strength of the flavor, this is not usually pre-ferred.
The active taste compounds identified by thisinvention are employed with the dog food in any amount which is effective for its 1avor as such to be observed by the dog, and are desirably employed at levels effective to produce a significant improve-ment in palatability for the dog food. Based on aqueous solutions, effective concentrations of the dog food flavors are within the range of from 0.1 to 500 milimolars. Strong responses are observed at levels of from 50 to 125 milimolars in aqueous solu-tion. Variation from and within these ranges will obviously occur depending upon the particular dog food formulation and its processing history, as well as the manner of application of the flavors.
The dog foods containing the dog food flavors 1 3S73~2 of this invention are fed to dogs in normal manner, except for the fact that they are treated at some point to incorporate the dog food flavors and the dogs can be expected to prefer them to untreated foods of similar formulation. Along this line, tests have shown all of the dog food flavors of this inven~
tion to cause strong taste responses in dogs when given in aqueous solution. And, aqueous gravies con-sisting of water and L-cysteine, L-histidine, or a combination of ~ part ATP with one part each of L-proline, L-cysteine and L-histidine, served with a commercial dry dog food having its own gravy former were effective in improving the palatability of the dog food yet further. Effective levels in this case, where a 100 gram sample of the food was fed with 150 grams of warm water, were 1% and 3% by weight of the dry weight of the dog food for L-cysteine; 3% of the dry weight of the dog food for L-histidine; and 1%, 3% and 6% of the dry weight of the dog food for the combination of flavors. A test employing, on the same basis, 3% ATP, 1% and 3% L-proline, and 1% L-lysine did not show palatability boosts over the highly flavorful control, probably because the fla-vors of this invention represent raw meat flavors _ which were overpowered and obscured by the heavycooked meat flavor inherent in the untreated dog food.
The above explAnation is presented for the pur-pose of enabling those skilled in the art how to practice the invention. However, upon reading this disclosure, many modifications and variations of the specific disclosure will become apparent to those skilled in the art. It is intended that all such modifications and variations be included within the scope of the invention which is defined by the following claims.
.
` DOG FOOD FLAVORS
.
Technical Field , The present invention relates to dog food flavors and more particularly to dog foods having increased palatability due to these flavors and methods for producing the dog foods in increased palatability.
Back~round Art There is a continuing effort being made to de-velop processes and formulations which increase thepalatability of dog foods while at the same time maintaining their nutritional value. While by it-self the development of nutritious dog foods is quite well understood and poses few problems to the art, there is a continuing problem of making these formulations palatable. Where an offered food is unpalatable, a dog may pass it up and thereby not take advantage of its nutritional va:Lue.
Many attempts have been made to obtain increas-ed palatability of pet foods by the addition of a variety of materials. In U.S. 3,653,908 to Buck et al, it is disclosed that amino acids in general can improve palatability when included in cat foods, especially when reacted with reducing sugars. In another recent patent, U.S. 3,857,968 to G. J. Haas et al., there is disclosed a process for improving the palatability of animal foods based on an ~, 1 ~873t2 enzymatic hydrolysate of a fat and protein. Also,recent U.S. Patent 3,830,798 discloses a method for hydrolyzing ribonucleic acid for addition to dog foods, and U.S. Patent 3,832,~71 discloses the use of 5'-nucleotide containing flavors for cat foods.
Numerous other patents and publications also indicate a need for, and a keen interest in, improv-ing the palatability of dog foods.
Summary of the Invention Accordingly, the present invention provides dog foods of improved palatability.
Further, the present invention provides a pro-cess for improving the palatability of dog foods.
The present invention is accomplished by incor-porating an effective amount of a palatabilityenhancing material selected from the group consist-ing of L-proline, L-cysteine, L-histidine, L-lysine, inosine 5'-triphosphate (ITP), inosine 5'-diphosphate (IDP), and adenosine 5'-triphosphate (ATP), or a combination of these, into the dog food formulation.
Significant palatability boosts can be obtained by feeding dog foods improved by these palatability enhancers to dogs.
Detailed Description of the Invention The term "palatability" is broad and encom-passes all of the various properties of the foods sensed by the dog. Among these properties are tex-ture, taste and aroma. It is believed that the pre-sent invention increases the overall palatability of a dog food by improving the taste of the food through the introduction of highly pronounced levels of those raw meat flavor notes Most preferred by dogs. Thus, the compounds identified according to this invention are referred to herein alternatively as dog food flavors or palatability enhancers.
1~673~2 The compounds identified by this, i.e., L-proline, L-cysteine, L-histidine, L-lysine, inosine 5'-triphosphate, (ITP), inosine 5'-diphosphate (IDP~, and adenosine 5'-triphosphate (ATP), can - 5 improve the attractiveness and acceptance by dogs, of a variety of foods formulated for them. Among these foods are the conventional dry, intermediate-moisture and canned dog foods of conventional formulation as well as soups or gravies for use alone or in combination with any of the other dog food forms. Typical formulations of dry dog foods and their methods of preparation are those described in U.S. Patents 3,365,297 and 3,330,503; especially suitable use of the present invention can be made where the meat contents of these foods is ~educed or eliminated. Typical of the intermediate-moisture dog foods are those described in U.'S. Patent 3,202,514 to Burgess et al. and United Kingdom Patent 1,151,991.
20' Especially suitable among the dog foods which can be improved by the dog food flavors or palatabil,ity enhancers identified according to the present invention, are soups and gravies for dog use., These soups and gravies can consist of, or consist essentially of, water and effective flavor-ing amounts of the dog food flavors. Plain water solutions of the pet food flavors identified by the present invention cause strong taste responses by , 30 dogs. For gravies, a bland thickening medium will ordinarily be employed, and such thickeners can also be employed in soups. Among the suitable bland thickeners are those hydrophilic colloids, such as carboxymethyl cellulose, sodium alginate, kelp-derived gums, and the like, which are known in the ~ 167312 art. The foods if desired can be full-feeding, nutritionally balanced dog foods containing protein, fat, carbohydrates, vitamins and minerals, so long as the complex formulations do not present their own flavor profiles which totally mask or obscure the flavors applied according to this invention.
When employed with a solid dog food of the types mentioned above, -the dog food flavor composi-tions of this invention are desirably coated on the outside of the food, and preferably are applied in a manner which allows their release into any water used for hydration. Where the dog food has an exterior fat coating, the flavor compound is prefer-ably applied to the exterior of the fat coating.
The dog food flavors can also be incorporated in-teriorly of the food, such as by simple mixing with the other ingredients during preparation. However, because this generally causes excessive losses in the strength of the flavor, this is not usually pre-ferred.
The active taste compounds identified by thisinvention are employed with the dog food in any amount which is effective for its 1avor as such to be observed by the dog, and are desirably employed at levels effective to produce a significant improve-ment in palatability for the dog food. Based on aqueous solutions, effective concentrations of the dog food flavors are within the range of from 0.1 to 500 milimolars. Strong responses are observed at levels of from 50 to 125 milimolars in aqueous solu-tion. Variation from and within these ranges will obviously occur depending upon the particular dog food formulation and its processing history, as well as the manner of application of the flavors.
The dog foods containing the dog food flavors 1 3S73~2 of this invention are fed to dogs in normal manner, except for the fact that they are treated at some point to incorporate the dog food flavors and the dogs can be expected to prefer them to untreated foods of similar formulation. Along this line, tests have shown all of the dog food flavors of this inven~
tion to cause strong taste responses in dogs when given in aqueous solution. And, aqueous gravies con-sisting of water and L-cysteine, L-histidine, or a combination of ~ part ATP with one part each of L-proline, L-cysteine and L-histidine, served with a commercial dry dog food having its own gravy former were effective in improving the palatability of the dog food yet further. Effective levels in this case, where a 100 gram sample of the food was fed with 150 grams of warm water, were 1% and 3% by weight of the dry weight of the dog food for L-cysteine; 3% of the dry weight of the dog food for L-histidine; and 1%, 3% and 6% of the dry weight of the dog food for the combination of flavors. A test employing, on the same basis, 3% ATP, 1% and 3% L-proline, and 1% L-lysine did not show palatability boosts over the highly flavorful control, probably because the fla-vors of this invention represent raw meat flavors _ which were overpowered and obscured by the heavycooked meat flavor inherent in the untreated dog food.
The above explAnation is presented for the pur-pose of enabling those skilled in the art how to practice the invention. However, upon reading this disclosure, many modifications and variations of the specific disclosure will become apparent to those skilled in the art. It is intended that all such modifications and variations be included within the scope of the invention which is defined by the following claims.
.
Claims (10)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A process for improving the palatability of a nutritionally balanced dog food containing protein, fat, carbo-hydrates, vitamins, and minerals comprising incorporating into the dog food an amount of a palatability improving material consisting essentially of a material selected from the group con-sisting of L-proline, L-cysteine, L-histidine, L-lysine, inosine 5'-triphosphate, inosine 5'-diphosphate, adenosine 5'-triphosphate or a combination of these, the amount of the palatability improv-ing material being effective to increase the palatability of the dog food.
2. A process for improving the palatability of a nutritionally balanced dog food containing protein, fat, carbo-hydrates, vitamins and minerals, comprising incorporating into the dog food an amount of a palatability improving material consist-ing essentially of a material selected from the group consisting of L-proline, L-cysteine, L-histidine, inosine 5'-triphosphate, inosine 5'-diphosphate, adenosine 5'-triphosphate or a combination of these, the amount of the palatability improving material being effective to increase the palatability of the dog food.
3. A process according to claim 1 or 2, wherein the palatability improving material is employed in an aqueous gravy at level of from 0.1 to about 500 milimolars.
4. A process according to claim 2, wherein the palat-ability improving material is L-proline.
5. A process according to claim 1 or 2, wherein the palatability improving material is L-cysteine.
6. A process according to claim 4, wherein the palat-ability improving material is L-histidine.
7. A process according to claim 1 or 2, wherein the palatability improving material is L-lysine.
8. A process according to claim 1 or 2, wherein the palatability improving material is inosine 5'-triphosphate.
9. A process according to claim 1 or 2, wherein the palatability improving material is inosine 5'-diphosphate.
10. A process according to claim 1 or 2 wherein the palatability improving material is adenosine 5'-triphosphate.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/888,795 US4267195A (en) | 1976-09-10 | 1978-03-21 | Dog food flavors |
| US888,795 | 1978-03-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1167312A true CA1167312A (en) | 1984-05-15 |
Family
ID=25393912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000323859A Expired CA1167312A (en) | 1978-03-21 | 1979-03-20 | Dog food flavors |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1167312A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3363297A4 (en) * | 2015-11-20 | 2018-10-24 | Unicharm Corporation | Pet food and method for manufacturing same |
-
1979
- 1979-03-20 CA CA000323859A patent/CA1167312A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3363297A4 (en) * | 2015-11-20 | 2018-10-24 | Unicharm Corporation | Pet food and method for manufacturing same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry | ||
| MKEX | Expiry |
Effective date: 20010515 |