High-temperature-resistant thermosensitive pet nutritional composition and preparation method thereof

Abstract

The invention relates to a high-temperature-resistant thermosensitive pet nutritional composition and a preparation method thereof, and belongs to the technical field of pet food. Comprising the following raw materials in parts by weight: 30-40 parts of meat, 5-10 parts of viscera, 10-20 parts of meat with bones, 3-5 parts of fish oil microcapsules, 3-5 parts of fruits and vegetables, 1-2 parts of pretreated yeast powder, 1.3-1.5 parts of taurine, 0.5-1 part of prebiotics and 3-6 parts of citric acid. The obtained pet nourishment has excellent high-temperature-resistant heat sensitivity.

Description

Technical Field

[0001] The invention belongs to the technical field of pet food, and relates to a high-temperature resistant and heat-sensitive pet nutritional composition and a preparation method thereof. Background Art

[0002] Your pet's daily diet may not fully meet its nutritional needs, and even if it eats high-quality pet food, there may be nutritional deficiencies. Pet nutritional supplements can fill these deficiencies and ensure that your pet gets comprehensive nutrition.

[0003] In order to meet the comprehensive nutritional needs of pets, a variety of nutrients are often added to them. However, there are some steps in the processing that require high-temperature treatment, which will cause some heat-sensitive ingredients to lose some of their activity, thereby reducing nutrition, such as fish oil and yeast powder.

[0004] Therefore, it is necessary to develop a pet nutritional composition that is resistant to high temperatures and is heat-sensitive. Summary of the invention

[0005] The object of the present invention is to provide a high temperature resistant and heat sensitive pet nutritional composition and a preparation method thereof. The prepared pet nutritional composition has excellent high temperature resistance and heat sensitivity.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A high temperature resistant and heat sensitive pet nutritional composition, comprising the following raw materials in parts by weight: 30-40 parts of meat, 5-10 parts of viscera, 10-20 parts of bone-in meat, 3-5 parts of fish oil microcapsules, 3-5 parts of fruits and vegetables, 1-2 parts of pretreated yeast powder, 1.3-1.5 parts of taurine, 0.5-1 part of prebiotics and 3-6 parts of citric acid;

[0008] The preparation method of the fish oil microcapsules is as follows:

[0009] Vitamin E and superoxide dismutase are sequentially added to fish oil, and the mixture is stirred at a speed of 400 r / min for 50 to 80 minutes to obtain a mixture A, wherein the mass ratio of fish oil, vitamin E and superoxide dismutase is 10:1:1; seaweed polysaccharide, sodium octenyl succinate starch, microcrystalline cellulose and deionized water are mixed at a mass ratio of 1:(5-8):1:10 at 50 to 80°C, and stirred at a speed of 400 r / min for 70 to 100 minutes to obtain a wall material solution after uniform stirring; an emulsifier is added to emulsify the mixture, and then the mixture A is added as a core material, and the mixture is stirred at a speed of 500 r / min for 30 minutes to obtain an emulsion; the emulsion is homogenized twice, the first homogenization pressure is 30 to 50 MPa, and the second homogenization pressure is 20 to 40 MPa; and fish oil microcapsules are obtained through spray drying.

[0010] As a preferred technical solution of the present invention, the preparation process of the pretreated yeast powder is as follows:

[0011] The yeast powder and the β-cyclodextrin solution were mixed in a mass ratio of 1:7, and the mixture was ultrasonically treated for 15 minutes, and then filtered and freeze-dried at -30°C for 8 to 12 hours to obtain the pretreated yeast powder.

[0012] As a preferred technical solution of the present invention, the spray-dried parts have an inlet air temperature of 170-180°C and an outlet air temperature of 80-100°C.

[0013] As a preferred technical solution of the present invention, the emulsifier is citric acid fatty acid glyceride and pectin in a mass ratio of 1:1.

[0014] As a preferred technical solution of the present invention, the mass ratio of the core material, wall material solution and emulsifier is 3:6:1.

[0015] As a preferred technical solution of the present invention, the meat is chicken and beef in a mass ratio of 1:1.

[0016] As a preferred technical solution of the present invention, the viscera are one or more of pigeon heart, pigeon liver, rabbit heart, rabbit liver, ox heart, ox liver, chicken heart and chicken liver.

[0017] As a preferred technical solution of the present invention, the β-cyclodextrin solution is a β-cyclodextrin aqueous solution with a mass fraction of 10 to 15%.

[0018] A method for preparing a high temperature resistant and heat sensitive pet nutritional composition comprises the following steps:

[0019] S1. Preparation of mixed materials:

[0020] Meat, viscera and bone-in meat were minced by a meat grinder according to weight to obtain a mixture A, the mixture A was placed in a vacuum mixer, and fruits and vegetables, taurine, prebiotics and citric acid were continuously added and mixed at a speed of 600 r / min for 70 to 100 min to obtain a mixture B, fish oil microcapsules and pretreated yeast powder were stirred and mixed at a speed of 500 r / min for 30 min to obtain a mixture C, the mixture C was added to the mixture B, and the speed was maintained and the stirring and mixing was continued for 2 h to obtain a mixture A;

[0021] S2. Freeze-drying:

[0022] Freeze-drying the mixture A at -40 to -30°C for 22 to 28 hours to obtain a mixture B;

[0023] S3, Sterilization:

[0024] The mixed material B is pasteurized and then naturally cooled to 30-35° C. to prepare the high-temperature-resistant and heat-sensitive pet nutritional composition.

[0025] As a preferred technical solution of the present invention, in step S3, the set temperature of the pasteurization is 65-75° C., and the processing time is 15-25 s.

[0026] Fish oil is rich in polyunsaturated fatty acids such as Omega-3 and Omega-6, which are essential nutrients that pets cannot synthesize on their own. They are essential for the health of their skin, hair texture, and the normal functioning of their immune systems. However, because fish oil is rich in highly unsaturated fatty acids, such as EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid), these ingredients are very sensitive to heat. Therefore, under high temperature conditions, these unsaturated fatty acids are prone to oxidation, resulting in a decline in the quality of fish oil and even the production of harmful substances.

[0027] Therefore, in the present invention, the fish oil is prepared into microcapsules to avoid the fish oil reacting due to high temperature during the preparation process, thereby reducing the original nutritional components in the food.

[0028] Using sodium starch octenyl succinate as the wall material, sodium starch octenyl succinate has good stability in both acidic and alkaline solutions, and has stable thermodynamic properties and reduced hydroxyl content, which enables it to withstand certain high temperatures and maintain the stability and quality of the product under a variety of extreme conditions. In addition, sodium starch octenyl succinate has good thickening and fluidity, which can improve the texture and taste of the product. In food, it can increase the viscosity of the food and make the taste more delicate; in cosmetics, it can improve the greasy feeling and touch of the product.

[0029] When preparing the wall material solution, cellulose nanocrystals are added at the same time. Cellulose nanocrystals have a small size effect and high mechanical strength. Adding them to the wall material can significantly improve the mechanical properties of the wall material, improve the problem of insufficient mechanical strength of the single sodium octenyl succinate starch wall material, and make the microcapsule more resistant to external pressure and maintain structural integrity. The addition of cellulose nanocrystals can also improve the thermal stability of the sodium octenyl succinate starch wall material. Under high temperature conditions, cellulose nanocrystals can act as a physical barrier to protect the core material from high temperature damage.

[0030] At the same time, seaweed polysaccharide is added. Seaweed polysaccharide is hygroscopic and can absorb the residual moisture of the microcapsules and the ambient moisture, thereby protecting the stability of the main structure of the microcapsules, avoiding the adhesion of the microcapsules due to moisture absorption, and maintaining the free-flowing powder state of the microcapsules. At the same time, during the drying process, trehalose can act as a protective agent to enhance the resistance of the microcapsules to the dry environment. Especially in the spray drying process, the melting point of seaweed polysaccharide makes it very suitable for being in a molten state under this process, which is conducive to the continued evaporation of the water in the inner layer of the microcapsules in the later stage of drying.

[0031] When superoxide dismutase (SOD) and vitamin E are used together, they can work synergistically to remove free radicals in the body and improve antioxidant efficiency. SOD is mainly responsible for removing water-soluble superoxide anion free radicals, while vitamin E mainly protects the lipid components on the cell membrane. Adding SOD and vitamin E to fish oil can further prevent changes in fish oil during processing.

[0032] Yeast powder plays an important role in pet food. It can provide high-quality protein and is rich in vitamins and minerals. It can promote metabolism and enhance immunity. It also has a good attractant effect. The unique yeast aroma of yeast powder has a good attractant effect on pets, which can increase their appetite and help them maintain a healthy weight.

[0033] However, yeast powder is a very fragile microorganism and is not resistant to high temperatures. If placed in a high temperature environment for a long time, yeast powder may lose its activity. Therefore, when adding yeast powder, it is first treated with β-cyclodextrin and then treated with β-cyclodextrin inclusion. β-cyclodextrin not only has good heat resistance itself, but also the inclusion compound formed by it and the flavoring substances also has certain high temperature resistance. In addition, the hydrophobic cavity structure of β-cyclodextrin also helps it maintain its structural integrity at high temperatures, and the high temperature resistance of yeast powder treated with inclusion is improved.

[0034] Beneficial effects of the present invention:

[0035] In the present invention, microcapsules are formed, the heat-sensitive ingredient fish oil is used as the core material, sodium starch octenylsuccinate is used as the main material, and seaweed polysaccharides and cellulose nanocrystals are added as wall materials, so that the high temperature resistance of the fish oil can be improved. At the same time, yeast powder and other various nutrients are added through β-cyclodextrin inclusion, and the obtained pet nutritional products have excellent high temperature resistance and heat sensitivity. DETAILED DESCRIPTION

[0036] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in combination with the embodiments.

[0037] In the following examples and comparative examples:

[0038] The emulsifier is citric acid fatty acid glyceride and pectin in a mass ratio of 1:1;

[0039] The meat is chicken and beef in a mass ratio of 1:1;

[0040] Example 1

[0041] The invention comprises the following raw materials in parts by weight: 30 parts of meat, 5 parts of chicken hearts, 10 parts of beef with bones, 3 parts of fish oil microcapsules, 3 parts of pumpkin, 1 part of pretreated yeast powder, 1.3 parts of taurine, 0.5 parts of prebiotics and 3 parts of citric acid;

[0042] Preparation of fish oil microcapsules:

[0043] Vitamin E and superoxide dismutase are sequentially added to fish oil, and the mixture is stirred at a speed of 400 r / min for 50 minutes to obtain a mixture A, wherein the mass ratio of fish oil, vitamin E and superoxide dismutase is 10:1:1. At 50°C, seaweed polysaccharide, sodium octenyl succinate starch, microcrystalline cellulose and deionized water are mixed at a mass ratio of 1:5:1:10, and stirred at a speed of 400 r / min for 70 minutes. After uniform stirring, a wall material solution is obtained. After emulsification by adding an emulsifier, the mixture A is added as a core material, and stirred at a speed of 500 r / min for 30 minutes to obtain an emulsion. The mass ratio of the core material, the wall material solution and the emulsifier is 3:6:1. The emulsion is homogenized twice, the first homogenization pressure is 30 MPa, and the second homogenization pressure is 20 MPa. Fish oil microcapsules are obtained by spray drying, and the spray drying part has an inlet air temperature of 170°C and an outlet air temperature of 80°C.

[0044] Preparation of pretreated yeast powder:

[0045] The yeast powder was mixed with a β-cyclodextrin aqueous solution with a mass ratio of 1:7 and subjected to ultrasonic treatment for 15 minutes, and then filtered and freeze-dried at -30°C for 8 hours to obtain the pretreated yeast powder.

[0046] Preparation of high temperature resistant and heat sensitive pet nutritional composition:

[0047] S1. Prepare mixed material:

[0048] Meat, viscera and bone-in meat were minced by a meat grinder according to weight to obtain a mixture A, the mixture A was placed in a vacuum mixer, and fruits and vegetables, taurine, prebiotics and citric acid were continuously added and mixed at a speed of 600 r / min for 70 min to obtain a mixture B, fish oil microcapsules and pretreated yeast powder were stirred and mixed at a speed of 500 r / min for 30 min to obtain a mixture C, the mixture C was added to the mixture B, and the speed was maintained and the stirring and mixing was continued for 2 h to obtain a mixture A;

[0049] S2. Freeze-drying:

[0050] Freeze-drying mixed material A at -40°C for 22 hours to obtain mixed material B;

[0051] S3, Sterilization:

[0052] The mixed material B was pasteurized and then naturally cooled to 30° C. to prepare the high temperature resistant and heat sensitive pet nutrition composition. The setting temperature of the pasteurization was 65° C. and the processing time was 15 seconds.

[0053] Example 2

[0054] The invention comprises the following raw materials in parts by weight: 35 parts of meat, 8 parts of chicken hearts, 15 parts of bone-in chicken, 4 parts of fish oil microcapsules, 4 parts of carrots, 1.5 parts of pretreated yeast powder, 1.4 parts of taurine, 0.8 parts of prebiotics and 5 parts of citric acid;

[0055] Preparation of fish oil microcapsules:

[0056] Vitamin E and superoxide dismutase are sequentially added to fish oil, and the mixture is stirred at a speed of 400 r / min for 70 minutes to obtain a mixture A, wherein the mass ratio of fish oil, vitamin E and superoxide dismutase is 10:1:1. At 60°C, seaweed polysaccharide, sodium octenyl succinate starch, microcrystalline cellulose and deionized water are mixed at a mass ratio of 1:5:1:10, and stirred at a speed of 400 r / min for 80 minutes. After uniform stirring, a wall material solution is obtained. After emulsification by adding an emulsifier, the mixture A is added as a core material, and stirred at a speed of 500 r / min for 30 minutes to obtain an emulsion. The mass ratio of the core material, the wall material solution and the emulsifier is 3:6:1. The emulsion is homogenized twice, the first homogenization pressure is 40 MPa, and the second homogenization pressure is 30 MPa. Fish oil microcapsules are obtained by spray drying, and the spray drying part has an air inlet temperature of 175°C and an air outlet temperature of 90°C.

[0057] Preparation of pretreated yeast powder:

[0058] The yeast powder was mixed with a β-cyclodextrin aqueous solution with a mass ratio of 1:7 and subjected to ultrasonic treatment for 15 minutes, and then filtered and freeze-dried at -30°C for 10 hours to obtain the pretreated yeast powder.

[0059] Preparation of high temperature resistant and heat sensitive pet nutritional composition:

[0060] S1. Prepare mixed material:

[0061] Meat, viscera and bone-in meat were minced by a meat grinder according to weight to obtain a mixture A, the mixture A was placed in a vacuum mixer, and fruits and vegetables, taurine, prebiotics and citric acid were continuously added and mixed at a speed of 600 r / min for 80 min to obtain a mixture B, fish oil microcapsules and pretreated yeast powder were stirred and mixed at a speed of 500 r / min for 30 min to obtain a mixture C, the mixture C was added to the mixture B, and the speed was maintained and the stirring and mixing was continued for 2 h to obtain a mixture A;

[0062] S2. Freeze-drying:

[0063] Freeze-drying mixed material A at -35°C for 25 hours to obtain mixed material B;

[0064] S3, Sterilization:

[0065] The mixed material B was pasteurized and then naturally cooled to 32° C. to prepare the high temperature resistant and heat sensitive pet nutrition composition. The setting temperature of the pasteurization was 70° C. and the processing time was 20 seconds.

[0066] Example 3

[0067] The invention comprises the following raw materials in parts by weight: 40 parts of meat, 10 parts of chicken hearts, 20 parts of bone-in chicken, 5 parts of fish oil microcapsules, 5 parts of carrots, 2 parts of pre-treated yeast powder, 1.5 parts of taurine, 1 part of prebiotics and 6 parts of citric acid;

[0068] Preparation of fish oil microcapsules:

[0069] Vitamin E and superoxide dismutase are sequentially added to fish oil, and the mixture is stirred at a speed of 400 r / min for 80 minutes to obtain a mixture A, wherein the mass ratio of fish oil, vitamin E and superoxide dismutase is 10:1:1. At 80°C, seaweed polysaccharide, sodium octenyl succinate starch, microcrystalline cellulose and deionized water are mixed at a mass ratio of 1:8:1:10, and stirred at a speed of 400 r / min for 100 minutes. After uniform stirring, a wall material solution is obtained. After emulsification by adding an emulsifier, the mixture A is added as a core material, and stirred at a speed of 500 r / min for 30 minutes to obtain an emulsion. The mass ratio of the core material, the wall material solution and the emulsifier is 3:6:1. The emulsion is homogenized twice, the first homogenization pressure is 50 MPa, and the second homogenization pressure is 40 MPa. Fish oil microcapsules are obtained by spray drying, and the spray drying part has an air inlet temperature of 180°C and an air outlet temperature of 100°C.

[0070] Preparation of pretreated yeast powder:

[0071] The yeast powder was mixed with a β-cyclodextrin aqueous solution with a mass ratio of 1:7 and subjected to ultrasonic treatment for 15 minutes, and then filtered and freeze-dried at -30°C for 12 hours to obtain the pretreated yeast powder.

[0072] Preparation of high temperature resistant and heat sensitive pet nutritional composition:

[0073] S1. Preparation of mixed materials:

[0074] Meat, viscera and bone-in meat were minced by a meat grinder according to weight to obtain a mixture A, the mixture A was placed in a vacuum mixer, and fruits and vegetables, taurine, prebiotics and citric acid were continuously added and mixed at a speed of 600 r / min for 100 min to obtain a mixture B, fish oil microcapsules and pretreated yeast powder were stirred and mixed at a speed of 500 r / min for 30 min to obtain a mixture C, and the mixture C was added to the mixture B, and the speed was maintained and the stirring and mixing was continued for 2 h to obtain a mixture A;

[0075] S2. Freeze-drying:

[0076] Freeze-drying mixed material A at -30°C for 28 hours to obtain mixed material B;

[0077] S3, Sterilization:

[0078] The mixed material B was pasteurized and then naturally cooled to 35° C. to prepare the high temperature resistant and heat sensitive pet nutrition composition. The setting temperature of the pasteurization was 75° C. and the processing time was 25 seconds.

[0079] Comparative Example 1

[0080] The difference between Comparative Example 1 and Example 1 is that the yeast powder in Comparative Example 1 is not pretreated, and the other operations are the same.

[0081] Comparative Example 2

[0082] The difference between Comparative Example 2 and Example 1 is that in the preparation process of fish oil microcapsules in Comparative Example 2, fish oil is directly used as the core material, and the other operations are the same.

[0083] Comparative Example 3

[0084] The difference between Comparative Example 3 and Example 1 is that in the preparation process of fish oil microcapsules in Comparative Example 3, no cellulose nanocrystals are added to the wall material, and the other operations are the same.

[0085] Comparative Example 4

[0086] The difference between Comparative Example 4 and Example 1 is that in the preparation process of fish oil microcapsules in Comparative Example 4, no seaweed polysaccharide and cellulose nanocrystals are added to the wall material, and the other operations are the same.

[0087] Performance Testing:

[0088] The fish oil retention rates of the fish oil microcapsule samples prepared in Examples 1-3 and Comparative Examples 2-4 after being heated at high temperature for 2 hours were tested. The results are shown in the following table:

[0089] Group 100℃ 150℃ 200℃ Example 1 99.4 97.3 93.6 Example 2 99.4 97.5 93.7 Comparative Example 3 99.5 97.6 93.9 Comparative Example 2 96.1 92.5 87.5 Comparative Example 3 83.2 66.3 40.6 Comparative Example 4 80.3 62.1 37.4

[0090] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A high temperature resistant and heat sensitive pet nutritional composition, characterized in that: The invention comprises the following raw materials in parts by weight: 30 to 40 parts of meat, 5 to 10 parts of viscera, 10 to 20 parts of bone-in meat, 3 to 5 parts of fish oil microcapsules, 3 to 5 parts of fruits and vegetables, 1 to 2 parts of pretreated yeast powder, 1.3 to 1.5 parts of taurine, 0.5 to 1 part of prebiotics and 3 to 6 parts of citric acid; The preparation method of the fish oil microcapsules is as follows: Vitamin E and superoxide dismutase are sequentially added to fish oil, and the mixture is stirred at a speed of 400 r / min for 50 to 80 minutes to obtain a mixture A, wherein the mass ratio of fish oil, vitamin E and superoxide dismutase is 10:1:1; seaweed polysaccharide, sodium octenyl succinate starch, microcrystalline cellulose and deionized water are mixed at a mass ratio of 1:(5-8):1:10 at 50 to 80°C, and stirred at a speed of 400 r / min for 70 to 100 minutes to obtain a wall material solution after uniform stirring; an emulsifier is added to emulsify the mixture, and then the mixture A is added as a core material, and the mixture is stirred at a speed of 500 r / min for 30 minutes to obtain an emulsion; the emulsion is homogenized twice, the first homogenization pressure is 30 to 50 MPa, and the second homogenization pressure is 20 to 40 MPa; and fish oil microcapsules are obtained through spray drying.

2. The high temperature resistant and heat sensitive pet nutritional composition according to claim 1, characterized in that: The preparation process of the pretreated yeast powder is as follows: The yeast powder and the β-cyclodextrin solution were mixed in a mass ratio of 1:7, and the mixture was ultrasonically treated for 15 minutes, and then filtered and freeze-dried at -30°C for 8 to 12 hours to obtain the pretreated yeast powder.

3. The high temperature resistant and heat sensitive pet nutritional composition according to claim 1, characterized in that: The spray-dried part has an inlet air temperature of 170-180°C and an outlet air temperature of 80-100°C.

4. The high temperature resistant and heat sensitive pet nutritional composition according to claim 1, characterized in that: The emulsifier is citric acid fatty acid glyceride and pectin in a mass ratio of 1:

1.

5. The high temperature resistant and heat sensitive pet nutritional composition according to claim 1, characterized in that: The mass ratio of the core material, wall material solution and emulsifier is 3:6:

1.

6. The high temperature resistant and heat sensitive pet nutritional composition according to claim 1, characterized in that: The meat is chicken and beef in a mass ratio of 1:

1.

7. The high temperature resistant and heat sensitive pet nutritional composition according to claim 1, characterized in that: The viscera are one or more of pigeon heart, pigeon liver, rabbit heart, rabbit liver, ox heart, ox liver, chicken heart and chicken liver.

8. The high temperature resistant and heat sensitive pet nutritional composition according to claim 2, characterized in that: The beta-cyclodextrin solution is a beta-cyclodextrin aqueous solution with a mass fraction of 10 to 15%.

9. A method for preparing a high temperature resistant and thermosensitive pet nutritional composition according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1. Preparation of mixed materials: Meat, viscera and bone-in meat were minced by a meat grinder according to weight to obtain a mixture A, the mixture A was placed in a vacuum mixer, and fruits and vegetables, taurine, prebiotics and citric acid were continuously added and mixed at a speed of 600 r / min for 70 to 100 min to obtain a mixture B, fish oil microcapsules and pretreated yeast powder were stirred and mixed at a speed of 500 r / min for 30 min to obtain a mixture C, the mixture C was added to the mixture B, and the speed was maintained and the stirring and mixing was continued for 2 h to obtain a mixture A; S2. Freeze-drying: Freeze-drying mixed material A at -40 to -30°C for 22 to 28 hours to obtain mixed material B; S3, Sterilization: The mixed material B is pasteurized and then naturally cooled to 30-35° C. to prepare the high temperature resistant and heat sensitive pet nutritional composition.

10. The method for preparing the high temperature resistant and heat sensitive pet nutritional composition according to claim 9, characterized in that: In step S3, the setting temperature of the pasteurization is 65-75° C., and the processing time is 15-25 seconds.