Pet nutrient composition with high solubility

Abstract

A high-solubility pet nutritional composition, characterized in that it comprises an oil-soluble component, an emulsifier, a thickener, and an acidity regulator, wherein the oil-soluble component is selected from EPA, DHA, lauric acid, carnosic acid, linoleic acid, or one or more thereof; the emulsifier is selected from casein, whey protein, phospholipids, polysaccharides, octenylsuccinic acid, sodium starch, or one or more thereof; the thickener is selected from cellulose, locust bean gum, xanthan gum, sodium alginate, sodium carboxymethylcellulose, chitosan, or one or more thereof; the acidity regulator is selected from citric acid, sodium citrate, potassium citrate, malic acid, or lactic acid, or one or more thereof. the weight ratio of the oil-soluble component, the emulsifier, the thickener and the acidity regulator is (20-50) : (1-20) : (0.1-10) : (0.1-10).

Description

Technical area

[0001] The present application relates to the field of pet food and, in particular, to a pet nutrient composition with high solubility. State of the art

[0002] Pet food supplements are classified according to water content into: solid pet food supplements (water content < 14%), such as tablets, powders, granules; semi-solid pet food supplements (14% ≤ water content < 60%), such as nutrient pastes; liquid pet food supplements (water content ≥ 60%), such as liquid calcium, vitamin E capsules, etc.

[0003] The popularity of paste-based pet food is due to the following advantages: 1. Adaptation to the physiological habits of pets. For example, cats have a licking preference and refuse to chew solid food; the pasty consistency corresponds to their licking behavior and reduces feeding difficulties. 2. Adaptation to the needs of young and old pets: Young animals in the weaning phase have underdeveloped teeth, while older animals exhibit chewing dysfunction; pastes can be swallowed without chewing and reduce the risk of stress. 3. Increased nutrient absorption rate; pasty supplements allow for more direct intestinal absorption, increasing digestibility by over 30%, suitable for animals in convalescence. 4. Feeding convenience: Pastes can be directly squeezed or applied into the oral cavity, eliminating the need for laborious mixing or stirring; fine pastes can be administered via nasogastric tube to animals with anorexia, enabling nutritional support in critical cases. 5. Multifunctional integration: One paste can combine several functions (e.g. hairball reduction + coat care, intestinal protection + coat shine), economically efficient.

[0004] However, fats and water-soluble components in existing paste-like pet food supplements are difficult to mix homogeneously; during transportation and long-term storage, oil-water separation with fat precipitation on the surface often occurs, causing flavor impairment and shortening the shelf life of the products. Content of the utility model

[0005] The purpose of the present application is to provide a stable pet nutrient composition with high solubility that does not undergo oil-water separation during transportation and long-term storage.

[0006] The technical solution of the present application is as follows: A high-solubility pet nutrient composition comprises an oil-soluble component, an emulsifier, a thickener, and an acidity regulator, wherein the oil-soluble component is selected from EPA, DHA, lauric acid, carnosic acid, linoleic acid, or one or more thereof; the emulsifier is selected from casein, whey protein, phospholipids, polysaccharides, octenylsuccinic acid, sodium starch, or one or more thereof; the thickener is selected from cellulose, locust bean gum, xanthan gum, sodium alginate, sodium carboxymethylcellulose, chitosan, or one or more thereof; the acidity regulator is selected from citric acid, sodium citrate, potassium citrate, malic acid, or lactic acid, or one or more thereof. the weight ratio of the oil-soluble component, the emulsifier, the thickener and the acidity regulator is (20-50) : (1-20) : (0.1-10) : (0.1-10).

[0007] The pet nutrient composition for the present application is a creamy substance that, in addition to the aforementioned advantages of pasty pet food, is readily soluble in water at room temperature, thus promoting the digestion and absorption of nutrients by pets. The solubility of this creamy composition is described as follows: At room temperature, approximately 30 ml of tap water (approximately 25°C) is taken, 2 g of the paste is pressed into it, and gently stirred, whereupon a suspension immediately forms (referred to by the applicant as "Nutrifuse" technology).

[0008] The oil-soluble component of the present application comprises one or more of EPA / DHA, lauric acid, carnosic acid and linoleic acid, which can meet various needs such as immunity, coat care and antioxidant in pets.

[0009] The emulsifier in the solution of the present application is selected from casein, whey protein, phospholipids, polysaccharides, and octenylsuccinic acid sodium starch. Casein and whey protein can form elastic films on oil droplet surfaces to resist aggregation; when mixed with polysaccharides, a protein-polysaccharide complex interfacial membrane can be formed, the strength of which is three times higher than that of single emulsifiers and can withstand environmental stresses (temperature, mechanical shear); hydrophobic octenyl groups in octenylsuccinic acid sodium starch can anchor in the oil phase, while hydrophilic polysaccharide chains protrude into the water phase to form steric hindrance; phospholipids can reduce interfacial tension.Through mutual synergy with the three-dimensional network formed by the thickener, the above-mentioned emulsifiers can significantly increase the stability of the entire pet nutrient composition formulation, avoid oil-water separation, and extend the shelf life.

[0010] In the solution of the present application, an acidity regulator is further added, selected from one or more of citric acid, sodium citrate, potassium citrate, malic acid and lactic acid, which can promote pepsin activation, adapt to the acidic gastric environment of dogs and cats and additionally has an antibacterial effect.

[0011] The pet nutrient composition of the present application features a balanced composition, good taste, easily absorbed nutrients for pets, high stability, and a longer shelf life. Furthermore, controversial mineral oils and synthetic appetite stimulants are completely avoided, thus increasing safety for pets.

[0012] In some examples, the pet nutritional composition of the present application further comprises one or more oil-soluble active components selected from astaxanthin, lutein ester, and natural vitamin E.

[0013] The pet nutrient composition of the present application has an oil-soluble carrier phase that can accommodate additional oil-soluble active components. Astaxanthin exhibits potent antioxidant activity, protects nerve and eye cells of pets, and also promotes skin pigment deposition to improve color loss. Lutein ester reduces oxidative retinal damage, prevents macular degeneration, and, in combination with astaxanthin, can further enhance eye protection. In combination with vitamin E, it can synergistically increase antioxidant plasma levels, reducing the risk of cataracts and delaying joint degeneration in elderly animals. Vitamin E relieves skin allergies and itching in pets, also repairs the hair cuticle and improves color loss in breeds such as poodles.

[0014] In some examples, the pet nutritional composition of the present application further comprises one or more water-soluble active components selected from mannan oligosaccharides, sodium hyaluronate, D-biotin, and lactoferrin.

[0015] Mannan oligosaccharides primarily act on intestinal health by promoting the growth of beneficial microbiota and thus improving digestive function; sodium hyaluronate can lubricate pets' joints, increase skin moisture content, nourish hair follicles, and promote a glossy coat; D-biotin reduces dander and dermatological problems in pets, adds shine to coats, and supports digestive function; lactoferrin exhibits functions such as immune enhancement, antimicrobial action, promotion of intestinal health, and antioxidant support.

[0016] In some examples, the pet nutritional composition of the present application further comprises a flavor corrector, wherein the flavor corrector contains one or more of trehalose, chicken hydrolysate paste, and chicken fat. These components, in addition to improving the flavor profile of the pet nutritional composition with a flavor-enhancing effect, also improve the nutritional supply of pets and regulate their immunity and growth.

[0017] In some examples, the pet nutritional composition of the present application further comprises Haematococcus pluvialis powder. Haematococcus pluvialis powder contains natural astaxanthin with superior antioxidant protection; it can relieve arthritic pain in pets and improve walking ability; it also promotes eumelanin synthesis to improve "nose whitening" and "hair graying" in dog breeds such as poodles or huskies; it repairs the cuticle structure of the hair and reduces breakage.

[0018] In some examples, the oil-soluble component comprises at least EPA and DHA.

[0019] In some examples, the weight percentage of EPA and DHA is not less than 3%.

[0020] EPA and DHA can come from natural extracts of fish oil, krill oil or algal oil.

[0021] In some examples, the emulsifier comprises at least octenylsuccinic acid sodium starch. Octenylsuccinic acid sodium starch has an amphiphilic molecular structure: hydrophilic sodium carboxylate groups (-COO - ) extend into the aqueous phase and cause electrostatic repulsion to prevent droplet aggregation; hydrophobic octenyl long-chain groups (C8 alkane) anchor themselves in the oil phase and reduce interfacial tension; Furthermore, an interfacial film can be formed that resists droplet coalescence through steric hindrance and significantly delays the floating of the oil phase or sedimentation of the aqueous phase. Octenylsuccinic acid sodium starch can maintain low viscosity even at high concentrations and imparts good flowability to the system.

[0022] In some examples, the weight ratio of the oil-soluble component, the emulsifier, the thickener, the acidity regulator to the oil-soluble active component is (20-50) : (1-20) : (0.1-10) : (0.1-10) : (0.001-5).

[0023] In some examples, the weight ratio of the oil-soluble component, the emulsifier, the thickener, the acidity regulator to the water-soluble active component is (20-50) : (1-20) : (0.1-10) : (0.1-10) : (0.001-5). Detailed description

[0024] For the purposes of the following detailed description, it is to be understood that the present application is capable of utilizing various alternative variations and process step sequences unless expressly stated to the contrary. Further, except in working examples or as otherwise indicated, all numbers indicating amounts of ingredients as used in the specification and claims are to be understood in all instances as modified by the term "about." Therefore, unless otherwise indicated, the numerical parameters set forth in the following specification and the appended claims are to be considered approximate values ​​that will vary depending upon the desired performance characteristics sought to be achieved by the present application.At least no attempt is made to restrict the application of the equivalence principle to the scope of the claim; each numerical parameter should be interpreted at least by taking into account the number of reported significant figures and by applying standard rounding techniques.

[0025] Although the numerical ranges and parameters that represent the broad scope of the present application are approximate, the values ​​listed in specific examples are reported as accurately as possible. However, all numerical values ​​inherently contain certain errors that inevitably result from the standard deviations found in their respective test measurements.

[0026] As used in this document, the term "stable" refers to a product that exhibits no oil-water separation and no fat separation on its surface during a significant storage period (e.g., 1 year or more, preferably 2 years or more). Such a pet nutrient composition does not produce an oily mouthfeel upon consumption and thus exhibits improved flavor characteristics.

[0027] Below, examples of the present application are described in detail using examples. However, it should be understood that the following examples serve only to illustrate the present application and should not be considered as limiting the scope of the present application. Unless specific conditions are stated in the examples, procedures are carried out under standard conditions or according to the manufacturer's recommendations. Reagents or equipment without a manufacturer's name refer to commercially available standard products. Unless otherwise stated, all amounts stated are parts by weight based on the total weight. This application should not be interpreted as being limited to the specifically described examples. Manufacturing process: 1. The water-soluble components of the pet nutrient composition (e.g. trehalose, mannan oligosaccharides, sodium hyaluronate, D-biotin, lactoferrin, octenylsuccinic acid sodium starch, locust bean gum, xanthan gum) are heated with an appropriate amount of water at 60 °C until complete dissolution is achieved. 2. The oil-soluble components (fish oil, algae oil, krill oil, coconut oil, rosemary extract, sunflower oil, natural vitamin E) are mixed evenly. 3. The oil-soluble phase is added to the aqueous phase and shear homogenized for 10 minutes.

[0028] According to the manufacturing process described above, pet nutrient compositions 1-6 and comparative pet nutrient compositions 1-3 were prepared, the specific compositions of which are listed in Table 1-9. Fat excretion test method:

[0029] The degree of fat separation from the prepared pet nutrient composition is tested using a centrifuge. Emulsions of equal mass are weighed, centrifuged at high speed to separate the layers, and the separated oil layer is isolated and its weight is determined. For each pet nutrient composition, three replicate samples are taken, and the average of the measured values ​​serves as the final result. The results are presented in Table 10. The fat excretion test is carried out as follows: 1. Test conditions: The device is a centrifuge, temperature is maintained at 25 °C, speed is 4000 rpm, centrifugation time is 10 min. 2. Measurement process: A specific mass of the emulsion before molding is weighed into a centrifuge tube, and the total mass of the emulsion and tube is recorded. Water of the same mass is then weighed into a centrifuge tube and arranged symmetrically. After centrifugation according to the above conditions, the upper fat layer is aspirated with a pipette, and the total mass of the tube with the remaining emulsion is determined again. Three samples are measured in parallel. 3. Data processing: The amount of fat excreted is calculated from the difference between the measured masses. The unit is converted to g / 10g. The data from three parallel samples serve as the output and are evaluated.

[0030] The fat excretion test results are evaluated according to the following scheme: Fat excretion amount (g / 10g): ≥ 0.90 → grade 1; 0.80-0.89 → grade 2; 0.70-0.79 → grade 3; 0.60-0.69 → grade 4; < 0.60 → grade 5. Table 1: Component contents of pet nutrient composition 1 of the present application component Salary range DHA 25% EPA 12% Octenylsuccinic acid sodium starch 10% Xanthan 0,5% Mannan oligosaccharides 3% Sodium hyaluronate 1% natural vitamin E 0,01% Astaxanthin 0,01% Chicken hydrolysate paste 5% Citric acid monohydrate 0,2% Water rest Table 2: Component contents of pet nutrient composition 2 of the present application component Salary range DHA 25% EPA 12% Lauric acid 1% Trehalose 1% Sodium carboxymethylcellulose 1% Octenylsuccinic acid sodium starch 10% D-Biotin 0,01% Astaxanthin 0,01% Citric acid monohydrate 0,2% Water rest Table 3: Component contents of pet nutrient composition 3 of the present application component Salary range DHA 25% EPA 12% Carnosic acid 0,5% Mannan oligosaccharides 1% Sodium alginate 1% Octenylsuccinic acid sodium starch 10% Citric acid monohydrate 0,2% Water rest Table 4: Component contents of pet nutrient composition 4 of the present application component Salary range DHA 25% EPA 12% Sodium hyaluronate 0,05% Trehalose 1% Locust bean gum 0,5% Octenylsuccinic acid sodium starch 10% Citric acid monohydrate 0,2% Water rest Table 5: Component contents of pet nutrient composition 5 of the present application component Salary range DHA 25% EPA 12% Mannan oligosaccharides 0,5% Trehalose 0,5% Xanthan 2% Octenylsuccinic acid sodium starch 10% casein 1% Whey protein 1% Water rest Table 6: Component contents of pet nutrient composition 6 of the present application component Salary range DHA 25% EPA 12% Linoleic acid 1% Trehalose 1% Chitosan 2% Octenylsuccinic acid sodium starch 10% Citric acid monohydrate 2% Water rest Table 7: Component contents of the comparative pet nutrient composition 1 of the present application component Salary range DHA 25% EPA 12% Xanthan 0,5% Mannan oligosaccharides 3% Sodium hyaluronate 1% natural vitamin E 0,01% Astaxanthin 0,01% Chicken hydrolysate paste 5% Citric acid monohydrate 0,2% Water rest Table 8: Component contents of the comparative pet nutrient composition 2 of the present application component Salary range DHA 25% EPA 12% Sucrose esters 10% Xanthan 0,5% Mannan oligosaccharides 3% Sodium hyaluronate 1% natural vitamin E 0,01% Astaxanthin 0,01% Chicken hydrolysate paste 5% Citric acid monohydrate 0,2% Water rest Table 9: Component contents of the comparative pet nutrient composition 3 of the present application component Salary range DHA 25% EPA 12% Sodium hyaluronate 0,05% Trehalose 1% Locust bean gum 0,5% Triglyceride 1% Citric acid monohydrate 0,2% Water rest Table 10: Fat excretion test evaluation of pet nutrient composition Serial number Evaluation Pet nutrient composition 1 5 Pet nutrient composition 2 5 Pet nutrient composition 3 5 Pet nutrient composition 4 5 Pet nutrient composition 5 5 Pet nutrient composition 6 5 Comparison pet nutrient composition 1 2 Comparison pet nutrient composition 2 3 Comparison pet nutrient composition 3 4

[0031] As can be seen from the table above, the pet nutrient compositions of the present application exhibit excellent performance in terms of fat excretion (score 5) when using the selected emulsifiers, indicating excellent stability properties. Without the use of emulsifiers, the resulting pet nutrient compositions predominantly achieve only a low score (score 2) in the fat excretion evaluation. When using other emulsifiers, a stability rating of 4 or 3 can be achieved, although the stabilization effect is still different compared to the emulsifiers of the present application.

Claims

[1] Pet nutrient composition with high solubility, characterized by that it comprises an oil-soluble component, an emulsifier, a thickener and an acidity regulator, wherein the oil-soluble component is selected from EPA, DHA, lauric acid, carnosic acid, linoleic acid, one or more thereof; the emulsifier is selected from casein, whey protein, phospholipids, polysaccharides, octenylsuccinic acid sodium starch, one or more thereof; the thickener is selected from cellulose, locust bean gum, xanthan gum, sodium alginate, sodium carboxymethylcellulose, chitosan, one or more thereof; the acidity regulator is selected from citric acid, sodium citrate, potassium citrate, malic acid, lactic acid, one or more thereof; the weight ratio of the oil-soluble component, the emulsifier, the thickener and the acidity regulator is (20-50) : (1-20) : (0.1-10) : (0.1-10). [2] A high solubility pet nutrient composition according to claim 1, characterized by that it further comprises one or more oil-soluble active components selected from astaxanthin, lutein ester, natural vitamin E. [3] A high solubility pet nutrient composition according to claim 1, characterized by that it further comprises one or more water-soluble active components selected from mannan oligosaccharides, sodium hyaluronate, D-biotin, lactoferrin. [4] A high solubility pet nutrient composition according to claim 1, characterized by that it further comprises a flavor corrector, wherein the flavor corrector contains one or more of trehalose, chicken hydrolysate paste and chicken fat. [5] A high solubility pet nutrient composition according to claim 1, characterized by that it also contains Haematococcus pluvialis powder. [6] A high solubility pet nutrient composition according to claim 1, characterized by that the oil-soluble component contains at least EPA and DHA. [7] A high solubility pet nutrient composition according to claim 1, characterized by that the weight percentage of EPA or DHA is not less than 3%. [8] A high solubility pet nutrient composition according to claim 1, characterized by that the emulsifier comprises at least octenylsuccinic acid sodium starch. [9] A high solubility pet nutrient composition according to claim 2, characterized by that the weight ratio of the oil-soluble component, the emulsifier, the thickener, the acidity regulator and the oil-soluble active component is (20-50) : (1-20) : (0.1-10) : (0.1-10) : (0.001-5). [10] A high solubility pet nutrient composition according to claim 3, characterized bythat the weight ratio of the oil-soluble component, the emulsifier, the thickener, the acidity regulator and the water-soluble active component is (20-50) : (1-20) : (0.1-10) : (0.1-10) : (0.001-5).