AU2002339320A1 - Inhibition of (tyrophagus putrescentiae) in pet food products - Google Patents
Inhibition of (tyrophagus putrescentiae) in pet food productsInfo
- Publication number
- AU2002339320A1 AU2002339320A1 AU2002339320A AU2002339320A AU2002339320A1 AU 2002339320 A1 AU2002339320 A1 AU 2002339320A1 AU 2002339320 A AU2002339320 A AU 2002339320A AU 2002339320 A AU2002339320 A AU 2002339320A AU 2002339320 A1 AU2002339320 A1 AU 2002339320A1
- Authority
- AU
- Australia
- Prior art keywords
- pet food
- food product
- linoleic acid
- conjugated linoleic
- accordance
- 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.)
- Granted
Links
Description
INHIBITION OF TYROPHAGUS PUTRESCENTIAE IN PET FOOD PRODUCTS
BACKGROUND OF THE INVENTION
[0001] This invention relates generally to inhibition of growth and reproduction of Tyrophagus putrescentlae, and more particularly, to inhibition of growth and reproduction of Tyrophagus putrescentiae in pet food product by conjugated linoleic acid.
[0002] Pet food products are sometimes stored in distribution centers before sale to the public, and are also typically stored in homes by pet owners after purchase and before consumption by pets. Sometimes stored pet food products can be spoiled and/or consumed by pests such as mites. One common mite classified as Tyrophagus putrescentiae is known to feed and propagate in some pet food products.
[0003] Preservatives incorporated in the pet food product at excess levels can be used to inhibit infestation of pet food products by organisms such as Tyrophagus putrescentiae. However, most preservatives used add no positive nutritional value to pet food products.
[0004] It would therefore be desirable to provide a method of protecting pet food products during storage from Tyrophagus putrescentiae. Also it would be desirable to provide a method of inhibiting growth and reproduction of Tyrophagus putrescentiae in pet food products.
BPJEF SUMMARY OF THE INVENTION
[0005] In an exemplary embodiment of the present invention, a method of inhibiting the growth of Tyrophagus putrescentiae in a dry pet food product includes the step of adding conjugated linoleic acid (CLA) to the dry pet food. Specifically, and in one embodiment, at least 0.3% by weight conjugated linoleic acid is added to the dry pet food product. More specifically, adding conjugated linoleic acid to the dry pet food includes the steps of adding conjugated linoleic acid to a pet food meal pre-
mix, extruding the CLA containing premix to form the pet food, cutting the pet food to size, and drying the pet food. In one embodiment, the method further includes coating the dried, cut to size pet food with conjugated linoleic acid.
[0006] The above described method provides a pet food that is protected during storage from Tyrophagus putrescentiae. More specifically, the method provides a pet food that includes CLA which inhibits growth and reproduction of Tyrophagus putrescentiae in the pet food product. Further, the CLA adds positive nutritional value to the pet food product.
BRIEF DESCRIPTION OF THE DRAWINGS
[0007] Figure 1 is flow chart of a method of inhibiting the growth of Tyrophagus putrescentiae in a dry pet food product.
DETAILED DESCRIPTION OF THE INVENTION
[0008] Referring to Figure 1, a method 10 of inhibiting the growth of Tyrophagus putrescentiae in a pet food product includes the steps of adding 12 conjugated linoleic acid (CLA) to a pet food meal pre-mix, extruding 14 the CLA containing premix to form the pet food product, cutting 16 the pet food to size, and drying 18 the pet food product. In one embodiment, method 10 further includes coating 20 the dried, cut to size pet food product with CLA. The resultant finished, dried, and cut to size pet food product contains at least 0.3% by weight CLA which inhibits the growth and reproduction of Tyrophagus putrescentiae in the stored pet food product. It should be understood that the term pet food product includes dry pet food, semi-moist pet food, and pet treats.
[0009] The step of adding 12 CLA to a meal pre-mix includes combining a plurality of ingredients to form the meal pre-mix. The plurality of ingredients include, for example, grains, minerals, amino acids, meat meals, additives, and the like. The plurality of ingredients are mixed in a mixer or a series of mixers, and the temperature and moisture content are adjusted to predetermined levels, for example, about 190°F to about 220°F and about 20% to about 35% by weight moisture content, prior to
inputting the mixture of ingredients into an extruder. In one embodiment, the CLA is added to the plurality of ingredients in the mixer.
[0010] In the step of extruding 14 the CLA containing meal pre-mix, the ingredients are further mixed and heated in the extruder to a predetermined temperature, for example from about 200°F to about 300°F. The meal pre-mix is then extruded through an extruder diecap having a plurality of openings. The extruded product stream is then cut into pieces or kibbles of a predetermined size of, for example, about 0.1 inch to about 0.5 inch.
[0011] In the step of drying 18, the kibbles are dried in a dryer at about 290°F to about 340°F to a moisture content of, for example, about 5% to about 15%, and coated or dusted with a suitable material. The coating material is, for example, liquid animal digest, concentrated liquid animal digest, animal tallow or a dry coating such as dried yeast. The finished pet food product is then packaged for sale. In one embodiment, method 10 includes coating 20 the pet food product with CLA. In this embodiment, the coating material includes CLA.
[0012] Any suitable material containing CLA can be used in method 10. Examples of suitable conjugated linoleic acid containing materials include, but are not limited to, hydrolyzed plant oil, hydrolyzed vegetable oil, hydrolyzed animal oil, hydrolyzed animal fat and mixtures thereof. The CLA is formed by hydrolyzing the linoleic acid contained in plant oil, vegetable oil, animal oil, and animal fat, for example, tall oil, bran oil, coconut oil, corn oil, fish oil, safflower oil, soybean oil, cotton seed oil, rapseed oil, sunflower oil, beef fat, lamb fat, rabbit fat, turkey fat, swine fat, and poultry fat. Of course, different oils and fats include different levels of linoleic acid. It is preferred that the oils and fats contain at least 50% by weight linoleic acid. Oils and fats having less than 50% linoleic acid are acceptable, but require more of the hydrolyzed material to achieve the desired levels CLA in the finished pet food product. Further, the conjugation of linoleic acid can result in a plurality of isomers. The CLA used in method 10 includes one or more of 9-Z, 11-E
linoleic acid, 10-E, 12-Z linoleic acid and all other active isomeric forms of conjugated linoleic acid.
[0013] In one embodiment, at least 0.3% CLA in the finished pet food product inhibits growth and reproduction of Tyrophagus putrescentiae in the pet food product. Further, the CLA adds positive nutritional value to the pet food product. Specifically, tests of pet food containing at least 0.3% by weight CLA processed in accordance with method 10 showed that the growth and reproduction of Tyrophagus putrescentiae was significantly less than a control pet food product that was not proceed in accordance with method 10 and that did not contain CLA.
[0014] The tests were run by placing 14 kibble pieces of a pet food product containing CLA, and processed according to method 10, were placed in each of ten 60 mm by 15 mm dishes. Each dish was innoculated with about 30 mites {Tyrophagus putrescentiae), and sealed with parafilm. The ten dishes formed a treatment and were placed in a tray in an environmental chamber circulating humid air of about 65% RH to about 67%) RH at 76°F. The percent by weight of CLA varied from about 0.4% to about 1.5% in the test samples. Ten control dishes using a standard pet food product containing no CLA were also prepared and tested as described above. The population of mites were monitored in each test sample for five weeks, and the results showed that there was an exploding population of mites in the control sample dishes. By exploding population is meant that the population was so large it could not be counted. ' The population of mites in the test samples having CLA and processed according to method 10 varied from a low of 9 mites to a high of about 2500 mites.
[0015] In alternative embodiments, the CLA is added to the meal pre-mix only, or the CLA is added to the meal pre-mix and coated on the extruded kibbles, or the CLA is coated on the extruded kibbles only to produce a pet food product containing a predetermined amount of CLA.
[0016] While the invention has been described in terms of various specific embodiments, those skilled in the art will recognize that the invention can be practiced with modification within the spirit and scope of the claims.
Claims (23)
1. A method of inhibiting the growth of Tyrophagus putrescentiae in a pet food product, said method comprising the step of adding conjugated linoleic acid to the pet food product.
2. A method in accordance with Claim 1 wherein adding conjugated linoleic acid to the pet food product comprises the step of adding conjugated linoleic acid to the pet food product so that pet food product contains at least 0.3% by weight conjugated linoleic acid.
3. A method in accordance with Claim 1 wherein adding conjugated linoleic acid to the pet food product comprises the steps of: adding conjugated linoleic acid to a meal pre-mix; extruding the conjugated linoleic acid containing premix to form the pet food product; cutting the pet food product to size; and drying the pet food product.
4. A method in accordance with Claim 3 wherein adding conjugated linoleic acid to the pet food product further comprises the step of coating the pet food product with conjugated linoleic acid.
5. A method in accordance with Claim 1 wherein adding conjugated linoleic acid to the pet food product comprises the step of coating the pet food product with conjugated linoleic acid.
6. A method in accordance with Claim 1 wherein adding conjugated linoleic acid to the pet food product comprises the step of adding to the pet food product a conjugated linoleic acid containing material comprising at least one of hydrolyzed plant oil, hydrolyzed vegetable oil, hydrolyzed animal oil, and hydrolyzed animal fat.
7. A method in accordance with Claim 1 further comprising the step of coating the pet food product with at least 2% by weight animal tallow.
8. A method of inhibiting the growth of Tyrophagus putrescentiae in a pet food product, said method comprising the step of adding conjugated linoleic acid to the pet food product so that the dry pet food contains at least 0.3% by weight conjugated linoleic acid.
9. A method in accordance with Claim 8 wherein conjugated linoleic acid to the pet food product comprises the steps of: adding conjugated linoleic acid to a meal pre-mix; extruding the conjugated linoleic acid containing premix to form the pet food product; cutting the pet food product to size; and drying the pet food product.
10. A method in accordance with Claim 9 wherein adding conjugated linoleic acid to the pet food product further comprises the step of coating the pet food product with conjugated linoleic acid.
11. A method in accordance with Claim 8 wherein adding conjugated linoleic acid to the pet food product comprises the step of coating the pet food product with conjugated linoleic acid.
12. A method in accordance with Claim 8 wherein adding conjugated linoleic acid to the pet food product comprises the step of adding to the pet food product a conjugated linoleic acid containing material comprising at least one of hydrolyzed plant oil, hydrolyzed vegetable oil, hydrolyzed animal oil, and hydrolyzed animal fat.
13. A method in accordance with Claim 8 further comprising the step of coating the pet food product with at least 2% by weight animal tallow.
14. A method of manufacturing a pet food product, said method comprising the steps of: adding conjugated linoleic acid to a meal pre-mix; extruding the conjugated linoleic acid containing pre-mix to form the pet food product; cutting the pet food product to size; and drying the pet food product.
15. A method in accordance with Claim 14 further comprising the step of coating the pet food product with conjugated linoleic acid so that the pet food product contains at least 0.3% by weight conjugated linoleic acid in the dry pet food product.
16. A method in accordance with Claim 14 further comprising the step of coating the pet food product with at least 2% by weight animal tallow.
17. A method of manufacturing a pet food product, said method comprising the steps of: extruding a meal pre-mix to form the pet food product; cutting the pet food product to size; coating the cut to size pet food product with conjugated linoleic acid; and drying the pet food product to form a pet food product containing at least 0.3% by weight conjugated linoleic acid.
18. A method in accordance with Claim 17 further comprising the step of coating the pet food product with at least 2% by weight animal tallow.
19. An extruded farinaceous pet food product comprising a meal pre-mix and at least 0.3% by weight of conjugated linoleic acid.
20. A pet food product in accordance with Claim 19 wherein said conjugated linoleic acid is added to said meal pre-mix prior to extruding said pre-mix.
21. A pet food product in accordance with Claim 19 wherein said conjugated linoleic acid is added after extrusion of said meal pre-mix.
22. A pet food product in accordance with Claim 19 wherein said conjugated linoleic acid comprises a conjugated linoleic acid containing material comprising at least one of hydrolyzed plant oil, hydrolyzed vegetable oil, hydrolyzed animal oil, and hydrolyzed animal fat.
23. A pet food product in accordance with Claim 19 further comprising a coating of at least 2% by weight animal tallow.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/862,077 US7276260B2 (en) | 2001-05-21 | 2001-05-21 | Inhibition of Tyrophagus putrescentiae in pet food products |
US09/862,077 | 2001-05-21 | ||
PCT/US2002/015874 WO2002094027A1 (en) | 2001-05-21 | 2002-05-20 | Inhibition of $i(tyrophagus putrescentiae) in pet food products |
Publications (2)
Publication Number | Publication Date |
---|---|
AU2002339320A1 true AU2002339320A1 (en) | 2003-05-08 |
AU2002339320B2 AU2002339320B2 (en) | 2008-06-05 |
Family
ID=25337583
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU2002339320A Ceased AU2002339320B2 (en) | 2001-05-21 | 2002-05-20 | Inhibition of (tyrophagus putrescentiae) in pet food products |
Country Status (14)
Country | Link |
---|---|
US (1) | US7276260B2 (en) |
EP (1) | EP1395122B1 (en) |
JP (1) | JP4431314B2 (en) |
CN (1) | CN1268217C (en) |
AT (1) | ATE385175T1 (en) |
AU (1) | AU2002339320B2 (en) |
BR (1) | BR0209879B1 (en) |
CA (1) | CA2447054C (en) |
DE (1) | DE60224878T2 (en) |
ES (1) | ES2300479T3 (en) |
MX (1) | MX259132B (en) |
RU (1) | RU2306709C2 (en) |
WO (1) | WO2002094027A1 (en) |
ZA (1) | ZA200309820B (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7951493B2 (en) * | 2005-09-30 | 2011-05-31 | Hill's Pet Nutrition, Inc. | Methods for extending the shelf-life of food compositions containing polyunsaturated fatty acids |
US20070116843A1 (en) * | 2005-11-23 | 2007-05-24 | Changaris David G | Cooked foods containing conjugated linoleic acids |
HUE052691T2 (en) * | 2007-08-29 | 2021-05-28 | Mars Inc | Method of providing a cat food product in single-serve portions |
US9549550B2 (en) | 2009-10-30 | 2017-01-24 | David Changaris | Method and composition for long acting bacterial suppression on skin |
RU2546879C2 (en) * | 2010-08-03 | 2015-04-10 | Хилл'С Пет Ньютришн, Инк. | Fodder composition for domestic animals possessing antibacterial activity |
ES2384962B1 (en) | 2010-09-16 | 2013-05-20 | Francisco Campos Sánchez | BATHROOM REMOVABLE AND ADJUSTABLE IN HEIGHT FOR USE IN THE CLEANING AND CARE OF INFANTS AND COMPANION ANIMALS. |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3658548A (en) * | 1969-06-02 | 1972-04-25 | Gen Foods Corp | Animal food products |
US4298624A (en) * | 1970-10-16 | 1981-11-03 | General Foods Corp. | Protection against mite contamination |
US4282254A (en) * | 1979-10-04 | 1981-08-04 | General Foods Corporation | Dog food of improved acceptability |
US4446161A (en) * | 1982-03-29 | 1984-05-01 | General Foods Corporation | Aromatic, monohydric alcohols as preservatives for foods |
US5017614A (en) * | 1989-02-17 | 1991-05-21 | Wisconsin Alumni Research Foundation | Methods of preventing oxidation, quenching singlet oxygen and inhibiting mold growth and novel compositions therefor |
US5662953A (en) * | 1989-09-20 | 1997-09-02 | Nabisco, Inc. | Reduced calorie triglyceride mixtures |
US5230913A (en) * | 1991-03-01 | 1993-07-27 | Nabisco, Inc. | Fat mimetic having mineral core with fatty coating |
JP3207823B2 (en) * | 1999-04-28 | 2001-09-10 | リノール油脂株式会社 | Brown fat enhancer containing conjugated linoleic acid as active ingredient |
GB2355382A (en) * | 1999-08-24 | 2001-04-25 | Gilbertson & Page Ltd | Conjugated linoleic acid for weight reduction in a dog |
-
2001
- 2001-05-21 US US09/862,077 patent/US7276260B2/en not_active Expired - Fee Related
-
2002
- 2002-05-20 MX MXPA03010483 patent/MX259132B/en active IP Right Grant
- 2002-05-20 BR BRPI0209879-2B1A patent/BR0209879B1/en not_active IP Right Cessation
- 2002-05-20 ES ES02771853T patent/ES2300479T3/en not_active Expired - Lifetime
- 2002-05-20 AT AT02771853T patent/ATE385175T1/en not_active IP Right Cessation
- 2002-05-20 CA CA002447054A patent/CA2447054C/en not_active Expired - Fee Related
- 2002-05-20 AU AU2002339320A patent/AU2002339320B2/en not_active Ceased
- 2002-05-20 EP EP02771853A patent/EP1395122B1/en not_active Expired - Lifetime
- 2002-05-20 WO PCT/US2002/015874 patent/WO2002094027A1/en active IP Right Grant
- 2002-05-20 CN CNB028102215A patent/CN1268217C/en not_active Expired - Fee Related
- 2002-05-20 DE DE60224878T patent/DE60224878T2/en not_active Expired - Lifetime
- 2002-05-20 JP JP2002590755A patent/JP4431314B2/en not_active Expired - Fee Related
- 2002-05-20 RU RU2003136739/13A patent/RU2306709C2/en not_active IP Right Cessation
-
2003
- 2003-12-18 ZA ZA2003/09820A patent/ZA200309820B/en unknown
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