JP2005204659A - Pet food - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide pet food having high content of unsaturated fatty acids, and excellent in long preservation stability. <P>SOLUTION: This pet food contains the following ingredients (A), (B) and (C): (A) 5-50 mass% of oil and fat containing ≥5 mass% of diacylglycerol and containing ≥20 mass% of unsaturated fatty acids each having at least two double bonds in constituent fatty acids; (B) 0.001-1 mass% of total of copper, iron, manganese and cobalt as minerals; and (C) ≥0.1 mass% of a vitamin C derivative based on the ingredient (A). <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a pet food containing an unsaturated fatty acid-containing fat.

  Due to the pet boom, the number of pets is increasing, and accordingly, adult illnesses in humans such as pet obesity, diabetes, and liver diseases are increasing due to aging of pets, lack of exercise, overnutrition and the like. In addition, dogs and cats who become obese due to hormonal imbalance after contraceptive surgery are increasing.

  Many pet foods for preventing such obesity and weight gain have been developed. For example, an extract of laurel leaves that are amylase inhibitors (Patent Document 1), a lipase inhibitor such as hesperidin (Patent Document 2), maitake powder or / and maitake extract (Patent Document 3), a high unsaturated fatty acid content Pet foods containing oils and fats (Patent Document 4) and the like are known.

However, when fats and oils with a high unsaturated fatty acid content are blended in pet food, the oils and fats are denatured when stored for a long period of time, resulting in problems such as generation of odors and reduced preference. Furthermore, when minerals, such as copper, iron, manganese, and cobalt, are blended with fats and oils having a high unsaturated fatty acid content as nutrient sources, it is known that the oxidation reaction of fats and oils is promoted and long-term storage stability is further reduced.
JP 05-192092 A JP 09-187230 A Japanese Patent Laid-Open No. 08-38069 Japanese Patent Laid-Open No. 06-217710

  An object of the present invention is to provide a pet food having a high unsaturated fatty acid content and good long-term storage stability.

  The present inventor has studied the stability by blending various ingredients in a pet food system using a combination of fats and fats having a high unsaturated fatty acid content and minerals. As a result, the fats and oils contain 5% by mass or more of diacylglycerol, and It has been found that when the vitamin C derivative is blended in an amount of 0.1% by mass or more based on the unsaturated fatty acid-containing fat, long-term storage stability is remarkably improved.

The present invention includes the following components (A), (B) and (C):
(A) 5 to 50% by mass of fats and oils containing 5% by mass or more of diacylglycerol, the content of unsaturated fatty acids having two or more double bonds in the constituent fatty acid is 20% by mass or more,
(B) 0.001-1 mass% of the total of copper, iron, manganese and cobalt as minerals,
(C) Vitamin C derivative The pet food which contains 0.1 mass% or more with respect to a component (A) is provided.

  The pet food of the present invention is excellent in long-term storage stability, and does not change in odor or decrease in palatability even after long-term storage. Moreover, since the unsaturated fatty acid content is high and the diacylglycerol content is also high, the anti-obesity effect is excellent.

  The component (A) oil / fat used in the present invention is an oil / fat containing 5% by mass or more of diacylglycerol, and having an unsaturated fatty acid content of 2 or more double bonds in the constituent fatty acid and 20% by mass or more. Here, the diacylglycerol content is 5% by mass or more in fats and oils, preferably 5 to 99% by mass, more preferably 10 to 10% by mass, from the viewpoint of an unpleasant odor suppressing effect, an anti-obesity effect, and solubility of vitamin C derivatives. It is 99 mass%, More preferably, it is 15-99 mass%, Most preferably, it is 30-95 mass%.

  In addition, the content of unsaturated fatty acids having two or more double bonds in the constituent fatty acids of the oil and fat is 20% by mass or more, preferably 20 to 90% by mass from the viewpoint of anti-obesity effect, skin and hair health, More preferably, it is 23-80 mass%, Most preferably, it is 25-70 mass%.

As unsaturated fatty acids having two or more double bonds, linoleic acid, linolenic acid, EPA, DH
Examples thereof include unsaturated fatty acids having 18 to 24 carbon atoms such as A and arachidonic acid.

  Fatty acids constituting the oil and fat used in the present invention include unsaturated fatty acids and saturated fatty acids having one double bond in addition to unsaturated fatty acids having two or more double bonds. Examples of the unsaturated fatty acid having one double bond include unsaturated fatty acids having 16 to 24 carbon atoms such as oleic acid and palmitooleic acid. Examples of saturated fatty acids include fatty acids having 10 to 24 carbon atoms. Moreover, the total saturated fatty acid content in the fats and oils of the present invention is preferably 0 to 60% by mass, more preferably 2 to 40% by mass, and particularly preferably 2 to 20% by mass.

  The constituent fatty acid of the diacylglycerol in the oil and fat used in the present invention is also preferably the same as the constituent fatty acid of the entire oil and fat.

  This diacylglycerol is, for example, (1) an oil or fat containing 20% by mass or more of an unsaturated fatty acid having two or more double bonds in the constituent fatty acid (eg safflower oil, olive oil, cottonseed oil, corn oil, rapeseed oil, large Oils selected from soybean oil, palm oil, sunflower oil, linseed oil, sesame oil; lard, beef tallow, fish oil, milk fat, or fractionated oils thereof, randomized oil, hardened oil, transesterified oil) and glycerin, an alkali metal Alternatively, it may be transesterified in the presence of a hydroxide of an alkaline earth metal, or (2) obtained by esterification of a fatty acid mixture having an unsaturated fatty acid content of 20% by mass or more derived from these fats and oils with glycerin. it can. At this time, two or more kinds of fats and oils may be mixed. These reactions can also be carried out by a chemical reaction using an alkali catalyst or the like as described above, but the reaction is performed under mild conditions via an enzyme such as a 1,3-position selective lipase, It is preferable in terms of oxidation stability and palatability.

  The content of free fatty acids in the fats and oils used in the present invention is preferably 20% by mass or less, more preferably 10% by mass or less, and still more preferably in terms of ease of occurrence of unpleasant odors from fats and oils and palatability. It should be 5% by mass or less, more preferably 2% by mass or less, and particularly preferably 1% by mass or less. Triglyceride (TG) is mentioned as another component in fats and oils. For example, animal fats and oils and vegetable fats and oils can be mentioned. The constituent fatty acids of the triglycerides are also preferably the same as described above.

  The content of the component (A) fat in the pet food is 5 to 50% by mass, preferably 5 to 45% by mass, and more preferably 5 to 40% from the viewpoint of anti-obesity effect and removal of unpleasant odor of the pet food. It is 10 mass%, Most preferably, it is 10-30 mass%.

When pet food contains a large amount of copper, iron, manganese and cobalt as minerals, these act as a catalyst and promote oxidation of fats and oils. Therefore, the pet food of the present invention is effective when many of these components are contained.
These are blended, for example, as copper sulfate, iron sulfate, manganese oxide and cobalt carbonate. The content of the component (B) mineral in the pet food is 0.001 to 1% by mass, more preferably 0.001 to 0.5% by mass, and particularly preferably 0.005 to 0.1% by mass. is there.
In addition to these minerals, the pet food of the present invention may contain minerals such as calcium, phosphorus, sodium and potassium.

  As specific examples of the component (C) vitamin C derivative in the pet food of the present invention, ascorbyl palmitate, ascorbic acid stearate or a mixture thereof is preferable from the viewpoint of good solubility in fats and oils. Vitamin C derivative is blended as an antioxidant, but the blending system of specific component (A) oil and fat and component (B) mineral as described above, especially the blend of mineral that catalyzes the oxidation of fat as component (B) It is not known to be useful for improving long-term storage stability in the system. The component (C) vitamin C derivative is contained in an amount of 0.1% by mass or more based on the component (A), preferably 0.5% by mass or more, more preferably 0.5 to 5% by mass, particularly preferably 0. 0.5 to 1% by mass. Moreover, it is preferable from the point which suppresses the oxidation of fats and oils that a vitamin-C derivative exists in fats and oils, and especially it is melt | dissolving in fats and oils. In conventional fats and oils mainly composed of triacylglycerol, the solubility of the component (C) vitamin C derivative is low, and it was difficult to blend in a large amount in pet food. By increasing the diacylglycerol content of the vitamin C, the solubility of the vitamin C derivative was increased, and it was possible to add it to a pet food.

In addition to the above ingredients, the pet food of the present invention contains animal meat, plant sterols, plant proteins, grains, bran, potatoes, sugars, vegetables, vitamins, and the like as proteins. Examples of plant proteins include soy protein; examples of grains include wheat, barley, rye, milo, corn, etc .; types of bran include rice bran, bran, etc .; Examples of animal proteins include beef, chicken, pork, fish and the like, and the content thereof is preferably 0.2 to 60% by mass, more preferably 1 to 30% by mass. The total amount of plant protein, cereals, bran and potatoes is preferably 5 to 95% by mass in the pet food. Examples of the saccharide include oligosaccharide, sugar, sucrose, and sugar beet, and it is preferable to contain 5 to 80% by mass. Examples of vegetables include vegetable extracts and the like, and preferably 1 to 30% by mass. Examples of vitamins include A, B ₁ , B ₂ , D, E, niacin, pantothenic acid, carotene and the like, preferably 0.05 to 10% by mass. In addition, a gelling agent, a shape-retaining agent, a pH adjuster, a seasoning, an antiseptic, a nutrition reinforcing agent and the like that are generally used in pet foods can also be contained. In this production process, it is preferable to produce while substituting with an inert gas such as nitrogen or degassing for the purpose of suppressing the oxidation of the fats and oils of the component (A), particularly in the heating step.

Example 1
Antioxidants shown in Table 3 were blended with the diacylglycerol-containing vegetable oil having the composition shown in Table 1 to obtain blended oils W to Z, and pet food was produced with the blending shown in Table 2. Immediately after production and after accelerated test treatment, according to the analysis method of oil content described in 1.5-1996 of “Standard Analysis Method for Oils and Fats” established by the Japan Oil Chemists' Society, only the fats and oils are extracted from pet food and their peroxide values ( POV) was measured. The results are shown in Table 3.

(POV test method)
The peroxide value (POV) was analyzed in accordance with 2.4.12.2-94 “Peroxide Value” of “Standard Oil Analysis Test Method” established by the Japan Oil Chemists' Society. Evaluation made less than 30 the pass.
(Accelerated test method)
The pet food was filled in an open container and stored for 3 months in a constant temperature and humidity chamber having a temperature of 40 ° C. and a relative humidity of 75%. The POV of the fats and oils in the pet food after storage was measured.

  As a result, as shown in Table 3, among the various antioxidants, only the fats and oils in the pet food containing the blended oil Y containing ascorbyl palmitate has a POV of 30 or less after the acceleration test, It was found to have an effect of improving storage stability.

Claims (2)

The following components (A), (B) and (C):
(A) 5 to 50% by mass of fats and oils containing 5% by mass or more of diacylglycerol, the content of unsaturated fatty acids having two or more double bonds in the constituent fatty acid is 20% by mass or more,
(B) 0.001-1 mass% of the total of copper, iron, manganese and cobalt as minerals,
(C) Vitamin C derivative Pet food containing 0.1% by mass or more based on component (A). The pet food according to claim 1, comprising 0.5% by mass or more of component (C) with respect to component (A).