Freeze-dried brewing grain capable of quickly supplementing physical ability of pets and preparation method of freeze-dried brewing grain

Abstract

The invention provides a freeze-dried brewing grain capable of rapidly supplementing physical ability of pets and a preparation method thereof, and relates to the field of pet foods. The freeze-dried brewing grain capable of quickly supplementing the physical ability of the pet comprises composite freeze-dried staple food grain and functional nutrition powder which are mutually independent, the composite freeze-dried staple food grain consists of the following components: chicken breast, duck heart, salmon, beef liver, whole egg liquid, pumpkin powder, modified nano zinc alginate and trehalose. The functional nutrition powder consists of the following components: goat milk powder or bovine bone soup powder, glucose, whey protein powder, composite electrolyte, vitamin premix and green lip mussel powder. The freeze-dried brewing grain capable of rapidly supplementing the physical ability of the pets is good in palatability and easy to digest, can provide accurate nutrition intervention for the scenes of physical consumption, exercise recovery, post-illness repair and the like of the pets, avoids the problems of agglomeration, oxidation or inactivation of adopted functional components in production, storage and use, and improves the bioavailability of the freeze-dried brewing grain.

Description

Technical Field

[0001] This invention relates to the field of pet food, and in particular to a freeze-dried instant food for quickly replenishing pets' energy and its preparation method. Background Technology

[0002] The current trend of keeping cats and dogs as pets has evolved from its past functional roles of guarding the house or catching rodents to a profound emotional connection and a way of life. The core of this shift lies in the high degree of "family-ification" and "anthropomorphism" of pets in contemporary society. Pets play a crucial role as emotional companions and are considered family members by many owners. Pet owners' demands for pet food have shifted from simply "feeding enough" to "eating well" and "eating the right things." Especially during critical periods such as when pets are undergoing strenuous exercise, recovering from illness, or undergoing surgery, traditional dry pet food is poorly palatable and difficult to digest, making it hard to meet the nutritional needs of pets during these critical periods. While traditional wet pet food can replenish moisture, it is difficult to stably preserve and accurately provide functional nutrients. It cannot quickly replenish the animal's energy while proactively replenishing the body with water and water-soluble nutrients, making it difficult to provide precise nutritional intervention for scenarios such as energy depletion, exercise recovery, and post-illness repair.

[0003] While functional pet foods, such as freeze-dried kibble mixed with dry food, have emerged on the market, these products use TUDCA (hydrolyzed chicken bile powder) as their core ingredient, mixing traditional dry food with freeze-dried blocks from various sources (such as chicken breast and egg yolks). However, their product form remains "dry food mixed with freeze-dried kibble," failing to address the issues of active hydration, water-soluble nutrients, and rapid energy replenishment for animals. Furthermore, existing freeze-dried pet foods are mostly fed directly, and the stability of their nano-minerals (such as nano-selenium) is poor, posing limitations in production, storage, and use. They are prone to aggregation, oxidation, or inactivation during production or long-term storage, resulting in low bioavailability.

[0004] Based on this, a functional pet food is provided that is palatable, easy to digest, and can provide precise nutritional intervention for pets in scenarios such as physical exertion, exercise recovery, and post-illness repair. At the same time, it avoids the problems of aggregation, oxidation, or inactivation of the functional ingredients used in production, storage, and use, thereby improving its bioavailability. This has important technical significance and research value. Summary of the Invention

[0005] To address the technical problems existing in the prior art, this invention provides a freeze-dried instant food that can quickly replenish pets' energy. It is palatable, easy to digest, and can provide precise nutritional intervention for pets in scenarios such as energy consumption, exercise recovery, and post-illness repair. At the same time, it avoids the problems of aggregation, oxidation, or inactivation of the functional ingredients used in production, storage, and use, thereby improving its bioavailability.

[0006] This invention also provides a method for preparing freeze-dried instant food that can quickly replenish a pet's energy.

[0007] To solve the above technical problems, the technical solution adopted by the present invention is as follows: A freeze-dried instant food that quickly replenishes pets' energy includes independent compound freeze-dried staple food and functional nutritional powder. The compound freeze-dried staple food is composed of the following ingredients: chicken breast, duck heart, salmon, beef liver, whole egg liquid, pumpkin powder, modified nano zinc alginate, and trehalose. The modified nano-zinc alginate is chitosan-modified nano-zinc alginate. The functional nutritional powder is composed of the following ingredients: goat milk powder, glucose, whey protein powder, compound electrolytes, vitamin premix, and green-lipped mussel powder.

[0008] Preferably, the weight ratio of the compound freeze-dried staple food to the functional nutritional powder is 8:1.

[0009] Preferably, the compound freeze-dried staple food is composed of the following ingredients by weight: 40-50 parts chicken breast, 15 parts duck heart, 10-15 parts salmon, 5-6 parts beef liver, 5 parts whole egg liquid, 5 parts pumpkin powder, 0.3-0.4 parts modified nano zinc alginate, and 1 part trehalose.

[0010] Preferably, the functional nutritional powder, by weight, consists of the following components: 70 parts goat milk powder, 15 parts glucose, 10 parts whey protein powder, 2 parts compound electrolyte, 1.5 parts vitamin premix, and 1 part green-lipped mussel powder. The composite electrolyte is composed of potassium chloride and calcium carbonate; the weight ratio of potassium chloride to calcium carbonate is 1:2. The vitamin premix consists of vitamin B1, vitamin B2, vitamin B6, and vitamin E; the weight ratio of vitamin B1, vitamin B2, vitamin B6, and vitamin E is 1:1:1:10.

[0011] Furthermore, the preparation method of the modified nano-zinc alginate includes the following steps: Step S1: Mix sodium alginate aqueous solution and chitosan acetic acid solution evenly to obtain an aqueous solution; Step S2: At room temperature, the aqueous phase solution is added dropwise to the oil phase solution containing Span-80 with stirring, and then sheared and homogenized to obtain a W / O emulsion. Step S3: At room temperature, zinc chloride solution is added dropwise to the W / O emulsion with stirring. The mixture is stirred at room temperature, and the solid is separated and collected. The solid is washed and dried to obtain modified nano zinc alginate.

[0012] Preferably, in step S1, the concentration of the sodium alginate aqueous solution is 2-2.2 wt%. In the acetic acid solution of chitosan, the chitosan concentration is 1-1.1 wt% and the acetic acid volume concentration is 1-1.1%.

[0013] Preferably, in step S2, the concentration of Span-80 in the oil phase solution containing Span-80 is 2.2-2.4 wt%. The dropping rate of the aqueous solution is 1.5-2 mL / min; The rotation speed for shearing and homogenization is 12000-13000 rpm, and the shearing and homogenization time is 5-6 min.

[0014] Preferably, in step S3, the zinc chloride solution is an aqueous solution of zinc chloride in ethanol; the zinc chloride concentration in the zinc chloride solution is 1.2-1.4 mol / L, and the ethanol volume concentration is 45-50%. The dropping rate of zinc chloride solution is 1-1.2 mL / min; The zinc chloride solution was added dropwise to the W / O emulsion and stirred at room temperature for 4-5 hours.

[0015] Preferably, in step S1, the weight ratio of sodium alginate aqueous solution to chitosan acetic acid solution is 3.8-4:1; In step S2, the volume ratio of the aqueous solution to the oil solution containing Span-80 is 1:5-5.2. In step S3, the weight ratio of zinc chloride solution to W / O emulsion is 1:25-26.

[0016] A method for preparing the aforementioned freeze-dried instant food for quickly replenishing pet energy includes the following steps: preparing compound freeze-dried staple food and preparing functional nutritional powder. The method for preparing the compound freeze-dried staple food is as follows: chicken breast, duck heart, salmon, and beef liver are cut into granules and then mixed with whole egg liquid, pumpkin powder, modified nano zinc alginate, and trehalose until evenly mixed to obtain a mixture; the mixture is then freeze-dried until the moisture content is ≤5wt% to obtain the compound freeze-dried staple food. The method for preparing the functional nutritional powder is to mix goat milk powder or beef bone broth powder, glucose, whey protein powder, compound electrolyte, vitamin premix, and green-lipped mussel powder evenly to obtain the functional nutritional powder.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) The freeze-dried instant food for quickly replenishing pet energy of the present invention includes independent compound freeze-dried staple food and functional nutritional powder; in subsequent use, the compound freeze-dried staple food and functional nutritional powder are mixed, and then mixed with drinking water for brewing before consumption. It has a high feed intake ratio, good palatability, and good overall safety performance, and is suitable for long-term consumption. Among them, the independent compound freeze-dried staple food and functional nutritional powder can protect unstable and easily lost water-soluble and heat-sensitive functional ingredients (such as glucose and B vitamins) separately, ensuring the activity and stability of functional nutritional ingredients, and realizing precise nutritional intervention for pet energy recovery.

[0018] Furthermore, the freeze-dried instant food of this invention, which rapidly replenishes pet energy, combines a protein-rich compound freeze-dried staple food with functional nutritional powder. The glucose and electrolytes in this food are quickly absorbed by the pet's body, rapidly raising blood sugar levels and replenishing lost electrolytes. Whey protein and easily digestible meat protein provide raw materials for muscle repair, making it suitable for the nutritional needs of pets in scenarios such as energy expenditure, exercise recovery, and post-illness recovery. Addressing the issue that the ingredients in the compound freeze-dried staple food are rich in phosphorus but relatively deficient in calcium, the functional nutritional powder, including beef bone broth powder or goat milk powder, and compound electrolytes, is used to adjust the calcium-phosphorus ratio and maintain bone health. Simultaneously, modified nano-zinc alginate is added to the compound freeze-dried staple food to improve hairball control, intestinal health, antibacterial repair, and nutrient absorption in cats and dogs, and synergistically improves pet health through interaction with the vitamin premix in the functional nutritional powder. Furthermore, the salmon in the compound freeze-dried staple food is rich in Omega-3 fatty acids, which have natural anti-inflammatory effects. The green-lipped mussel powder in the functional nutritional powder is rich in glycosaminoglycans (such as chondroitin sulfate) and Omega-3 (ETA). Both can synergistically protect joint health through two different pathways: "anti-inflammatory" and "cartilage matrix supplementation." At the same time, the pumpkin powder in the compound freeze-dried staple food is rich in mild dietary fiber, which helps regulate intestinal peristalsis and stool formation; trehalose, as a prebiotic, further helps maintain the balance of intestinal flora. The aforementioned technologies work together synergistically to provide precise nutritional intervention for pets in scenarios such as energy consumption, exercise recovery, and post-illness repair, while avoiding the problems of aggregation, oxidation, or inactivation of the functional ingredients used in production, storage, and use, thus improving their bioavailability.

[0019] (2) The freeze-dried instant food of the present invention provides immediate and efficient nutritional support for pets that are active, recovering from illness, lactating, or need to gain weight. It is made by using glucose (rapid energy), whey protein (rapid protein) and compound electrolytes (to replenish lost energy) in functional nutritional powder. Combined with protein-rich compound freeze-dried staple food, it can quickly replenish the pet's physical strength. By mixing it with water, it can increase the pet's water intake and actively replenish the pet's body water. It is especially suitable for pets that do not want to drink water after exercise or illness.

[0020] (3) The freeze-dried instant food of the present invention for quickly replenishing pet energy is designed for the physical characteristics of cats and dogs. It uses chitosan-modified nano-zinc alginate. Through the combination of chitosan and nano-zinc alginate, it effectively improves hairball removal, intestinal health, antibacterial repair, and nutrient absorption in cats and dogs. Its application effect is significantly better than that of zinc alginate alone. Specifically, the modified nano-zinc alginate has a nanoscale core-shell structure, which greatly increases the contact area with the digestive tract. Through the bioadhesion properties of chitosan, it prolongs the residence time of the particles at the absorption site, realizing the slow release and effective absorption of the ingredients, and replenishing the zinc needs of the pet's body. At the same time, through the antibacterial enhancement effect of zinc and chitosan, it realizes the functions of inhibiting bacteria and adsorbing toxins, thereby regulating the pet's intestinal health. The modified composite improves the stability of the composite particles, avoids failure problems in the preparation and storage process, and can maintain structural stability in the gastric acid environment, targeting the release into the pet's intestines and improving its bioavailability. In addition, the chitosan coating modification can also mask the unpleasant taste of zinc ions and improve palatability.

[0021] (4) The preparation method of the freeze-dried instant food for quickly replenishing pet energy of the present invention can be obtained by purchasing raw materials through commercial channels, which is easy to obtain. The process is simple and the preparation process is easy to control, which is suitable for industrial-scale production. Detailed Implementation

[0022] To provide a clearer understanding of the technical features, objectives, and effects of this invention, specific embodiments are now described. It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0023] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments of the present invention. As used herein, "first," "second," etc., are used to distinguish similar objects and are not used to describe a particular order or sequence. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0024] This invention provides a freeze-dried instant food for quickly replenishing pet energy, comprising: a compound freeze-dried staple food and functional nutritional powder, the weight ratio of which is 8:1. To use this freeze-dried instant food, the compound freeze-dried staple food and functional nutritional powder are mixed, then mixed with drinking water before consumption.

[0025] In this embodiment of the invention, the compound freeze-dried staple food, by weight, consists of the following components: 40-50 parts chicken breast, 15 parts duck heart, 10-15 parts salmon, 5-6 parts beef liver, 5 parts whole egg liquid, 5 parts pumpkin powder, 0.3-0.4 parts modified nano zinc alginate, and 1 part trehalose.

[0026] The preparation method of the modified nano-zinc alginate includes the following steps: Step S1: Prepare a sodium alginate aqueous solution with a concentration of 2-2.2 wt% and a chitosan acetic acid solution with a concentration of 1-1.1 wt% respectively; specifically, add sodium alginate to deionized water, stir and dissolve to obtain a sodium alginate aqueous solution; and add chitosan to an acetic acid solution with a volume concentration of 1-1.1%, stir and dissolve to obtain a chitosan acetic acid solution; mix the sodium alginate aqueous solution and the chitosan acetic acid solution at a weight ratio of 3.8-4:1, and stir at room temperature for 20-40 minutes to obtain an aqueous phase solution.

[0027] Step S2: Add Span-80 to liquid paraffin to prepare an oil phase solution containing Span-80 with a concentration of 2.2-2.4 wt%. Then, at room temperature and with stirring at 800-1000 rpm, add the aqueous phase solution dropwise to the oil phase solution containing Span-80 at a dropping rate of 1-2 mL / min. After the addition is complete, transfer the material to a high-shear homogenizer and homogenize at 12000-13000 rpm for 5-6 min to obtain a W / O emulsion.

[0028] The volume ratio of the aqueous solution to the oil solution containing Span-80 is controlled to be 1:5-5.2.

[0029] Step S3: Add ZnCl2 to an ethanol aqueous solution (volume concentration 45-50%) to prepare a zinc chloride solution with a concentration of 1.2-1.4 mol / L; under stirring conditions at room temperature, add the zinc chloride solution dropwise to the W / O emulsion at a dropping rate of 1-1.2 mL / min; after the addition is complete, continue stirring at room temperature for 4-5 h, then centrifuge to collect the solids, wash the solids sequentially with isopropanol and deionized water, and freeze-dry to obtain chitosan-modified nano-zinc alginate composite particles, i.e. modified nano-zinc alginate.

[0030] The weight ratio of zinc chloride solution to W / O emulsion is 1:25-26.

[0031] In this embodiment of the invention, chitosan-modified nano-zinc alginate is used to address the specific characteristics of cats and dogs. The combination of chitosan and nano-zinc alginate effectively improves hairball control, intestinal health, antibacterial repair, and nutrient absorption in cats and dogs, demonstrating significantly better performance than zinc alginate alone. Specifically, the modified nano-zinc alginate, by constructing a nanoscale core-shell structure, significantly increases the contact area with the digestive tract. Through the bioadhesive properties of chitosan, the residence time of the particles at the absorption site is prolonged, achieving sustained release and effective absorption of the components, thus supplementing the pet's zinc requirements. Simultaneously, the antibacterial enhancement effect of zinc and chitosan enables antibacterial and toxin adsorption functions, thereby regulating the pet's intestinal health. Furthermore, the modified composite improves the stability of the composite particles, avoiding failure issues during preparation and storage, and maintaining structural stability in the acidic environment of the stomach, allowing for targeted release into the pet's intestines and improving bioavailability. Additionally, the chitosan coating modification masks the unpleasant taste of zinc ions, improving palatability.

[0032] In this embodiment of the invention, the functional nutritional powder, by weight, consists of the following components: 70 parts goat milk powder, 15 parts glucose, 10 parts whey protein powder, 2 parts compound electrolyte, 1.5 parts vitamin premix, and 1 part green-lipped mussel powder.

[0033] The composite electrolyte is composed of potassium chloride and calcium carbonate; the weight ratio of potassium chloride to calcium carbonate is 1:2.

[0034] The vitamin premix consists of vitamin B1, vitamin B2, vitamin B6, and vitamin E; the weight ratio of vitamin B1, vitamin B2, vitamin B6, and vitamin E is 1:1:1:10.

[0035] In this embodiment of the invention, a protein-rich compound freeze-dried staple food is combined with functional nutritional powders such as whey protein powder to quickly replenish amino acids for pets, suitable for the nutritional needs of pets in scenarios such as energy expenditure, exercise recovery, and post-illness repair. Addressing the issue that the raw materials in the compound freeze-dried staple food are rich in phosphorus but relatively deficient in calcium, functional nutritional powders such as beef bone broth powder or goat milk powder, and compound electrolytes are used to adjust the calcium-phosphorus ratio and maintain bone health. Simultaneously, modified nano-zinc alginate is added to the compound freeze-dried staple food to improve hairball control, intestinal health, antibacterial repair, and nutrient absorption in cats and dogs, and synergistically improves pet health through interaction with vitamin premixes in the functional nutritional powders.

[0036] Furthermore, the salmon in the compound freeze-dried staple food is rich in Omega-3 fatty acids, which have natural anti-inflammatory effects. The green-lipped mussel powder in the functional nutritional powder is rich in glycosaminoglycans (such as chondroitin sulfate) and Omega-3 (ETA). Both can synergistically protect joint health through two different pathways: "anti-inflammatory" and "cartilage matrix replenishment." At the same time, the pumpkin powder in the compound freeze-dried staple food is rich in mild dietary fiber, which helps regulate intestinal peristalsis and stool formation; trehalose, as a prebiotic, further helps maintain the balance of intestinal flora.

[0037] Furthermore, for pets with high activity levels, recovering from illness, lactating, or needing to gain weight, the functional nutritional powder provides immediate and efficient nutritional support through glucose (fast energy), whey protein (fast protein), and compound electrolytes (replenishing lost nutrients). Combined with protein-rich compound freeze-dried staple food, it can quickly replenish the pet's energy. By mixing it with water, it can increase the pet's water intake and actively replenish the pet's body water.

[0038] This invention also provides a method for preparing the aforementioned freeze-dried instant food that quickly replenishes pet energy, including the following steps: preparing compound freeze-dried staple food, preparing functional nutritional powder, and assembling the finished product.

[0039] (1) Preparation of compound freeze-dried staple food: ① Raw material pretreatment: Remove the tendons and excess fat from fresh or thawed chicken breast, duck heart, salmon, and beef liver, and cut them into particles with a diameter of 0.7-0.9cm. For easier handling, beef liver can be blanched in boiling water to set its shape before being diced.

[0040] ② Mixing: According to the weight parts, place the granules prepared from the above raw materials, whole egg liquid, pumpkin powder, modified nano zinc alginate, and trehalose into a vacuum tumbler and tumble at low speed for 10-15 minutes at 0-4℃ to make the auxiliary materials (whole egg liquid, pumpkin powder, modified nano zinc alginate, and trehalose) evenly coat the granules to obtain a mixture.

[0041] ③ Spreading and Quick-Freezing: Mix the mixture with sodium carboxymethyl starch at a weight ratio of 100:1.2-1.5 until homogeneous. Spread the mixture onto freeze-drying trays, controlling the thickness to 1.5-2 cm. Then, place the trays in a quick-freezing chamber and rapidly freeze at -40 to -35°C until the core temperature of the material drops below -18°C, obtaining the frozen material. The addition of sodium carboxymethyl starch ensures that the compound freeze-dried staple food disintegrates rapidly upon contact with water, improving the rehydration effect.

[0042] ④ Vacuum freeze drying: Transfer the quick-frozen material into the vacuum freeze drying chamber, start the vacuum pump, maintain the vacuum degree in the vacuum freeze drying chamber at 10-50 Pa, and then perform drying in two stages: Primary drying (sublimation drying): The material temperature is raised from -35℃ to 0℃ at a heating rate of 5-8℃ / h, and then kept at that temperature for 8-12 hours to remove most of the free water.

[0043] Secondary drying (analytical drying): Continue heating to 25-35℃ and keep warm for 3-5 hours to remove bound water until the moisture content of the material is ≤5wt%, thus obtaining compound freeze-dried staple food.

[0044] ⑤ Discharge and Packaging: After freeze-drying, nitrogen is introduced into the vacuum freeze-drying chamber to break the air. In a dry environment with a relative humidity of ≤20%, the compound freeze-dried staple food is packed into aluminum foil bags and sealed with nitrogen.

[0045] (2) Preparation of functional nutritional powder Weigh out goat milk powder (or beef bone broth powder), glucose, whey protein powder, compound electrolytes, vitamin premix and green-lipped mussel powder by weight, put them into a three-dimensional motion mixer, mix for 20-30 minutes until they are evenly mixed to obtain functional nutritional powder; package the functional nutritional powder into aluminum foil bags and seal them.

[0046] (3) Finished product assembly By placing the relatively separately packaged compound freeze-dried staple food and functional nutritional powder together in the same outer packaging bag at a weight ratio of 8-10:1, a freeze-dried instant food that can quickly replenish pets' energy is produced.

[0047] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described below in conjunction with some specific embodiments.

[0048] Example 1 This embodiment provides a freeze-dried instant food for quickly replenishing pet energy, comprising: a compound freeze-dried staple food and functional nutritional powder, which are independent of each other; the weight ratio of the compound freeze-dried staple food to the functional nutritional powder is 8:1. To use the freeze-dried instant food for quickly replenishing pet energy, the compound freeze-dried staple food and functional nutritional powder are mixed, then mixed with drinking water before consumption.

[0049] In this embodiment of the invention, the compound freeze-dried staple food, by weight, consists of the following components: 50 parts chicken breast; 15 parts duck heart; 10 parts salmon; 5 parts beef liver; 5 parts whole egg liquid; 5 parts pumpkin powder; 0.3 parts modified nano zinc alginate; and 1 part trehalose.

[0050] The preparation method of the modified nano-zinc alginate includes the following steps: Step S1: Prepare a 2wt% sodium alginate aqueous solution and a 1wt% chitosan acetic acid solution, respectively. Specifically, add sodium alginate to deionized water, stir and dissolve to obtain a sodium alginate aqueous solution; and add chitosan to a 1% acetic acid solution, stir and dissolve to obtain a chitosan acetic acid solution; mix the sodium alginate aqueous solution and the chitosan acetic acid solution at a weight ratio of 4:1, and stir at room temperature for 30 minutes to obtain an aqueous phase solution.

[0051] Step S2: Add Span-80 to liquid paraffin to prepare an oil phase solution containing Span-80 with a concentration of 2.2 wt%; then, at room temperature and with stirring at 1000 rpm, add the aqueous phase solution dropwise to the oil phase solution containing Span-80 at a dropping rate of 1.5 mL / min; after the addition is complete, transfer the material to a high shear homogenizer and homogenize at 12000 rpm for 5 min to obtain a W / O emulsion.

[0052] The volume ratio of the aqueous phase solution to the oil phase solution containing Span-80 is controlled to be 1:5.

[0053] Step S3: Add ZnCl2 to an ethanol aqueous solution (50% by volume) to prepare a zinc chloride solution with a concentration of 1.2 mol / L; under stirring conditions at room temperature, add the zinc chloride solution dropwise to the W / O emulsion at a dropping rate of 1 mL / min; after the addition is complete, continue stirring at room temperature for 4 h, then centrifuge to collect the solids, wash the solids sequentially with isopropanol and deionized water, and freeze-dry to obtain chitosan-modified nano-zinc alginate composite particles, i.e., modified nano-zinc alginate.

[0054] The weight ratio of zinc chloride solution to W / O emulsion is 1:25.

[0055] In this embodiment of the invention, the functional nutritional powder, by weight, consists of the following components: 70 parts goat milk powder; 15 parts glucose; 10 parts whey protein powder; 2 parts compound electrolyte; 1.5 parts vitamin premix; and 1 part green-lipped mussel powder.

[0056] The composite electrolyte is composed of potassium chloride and calcium carbonate; the weight ratio of potassium chloride to calcium carbonate is 1:2.

[0057] The vitamin premix consists of vitamin B1, vitamin B2, vitamin B6, and vitamin E; the weight ratio of vitamin B1, vitamin B2, vitamin B6, and vitamin E is 1:1:1:10.

[0058] This embodiment also provides a method for preparing the aforementioned freeze-dried instant food for quickly replenishing pet energy, the specific steps of which are as follows: (1) Preparation of compound freeze-dried staple food: ① Raw material pretreatment: Remove the tendons and excess fat from fresh chicken breast, duck heart, salmon, and beef liver, and cut them into 0.8cm particles. For easier handling, the beef liver can be blanched in boiling water to set its shape before being diced.

[0059] ② Mixing: According to the weight parts, place the granules prepared from the above raw materials, whole egg liquid, pumpkin powder, modified nano zinc alginate, and trehalose into a vacuum tumbler and tumble at low speed for 15 minutes at 0℃ to make the auxiliary materials (whole egg liquid, pumpkin powder, modified nano zinc alginate, and trehalose) evenly coat the granules to obtain a mixture.

[0060] ③ Spreading and Quick-Freezing: The mixture is thoroughly mixed with sodium carboxymethyl starch at a weight ratio of 100:1.3. The mixture is then spread into freeze-drying trays, maintaining a thickness of 2 cm. The trays are then placed in a quick-freezing chamber at -35℃ for rapid freezing, lowering the core temperature of the material to below -18℃, thus obtaining the frozen material. The addition of sodium carboxymethyl starch ensures that the compound freeze-dried staple food disintegrates rapidly upon contact with water, improving the rehydration effect.

[0061] ④ Vacuum freeze-drying: Transfer the quick-frozen material into the vacuum freeze-drying chamber, start the vacuum pump, maintain the vacuum degree in the vacuum freeze-drying chamber at 30Pa, and then perform drying in two stages: Primary drying (sublimation drying): The material temperature is raised from -35℃ to 0℃ at a heating rate of 5℃ / h, and then kept at that temperature for 10 hours to remove most of the free water.

[0062] Secondary drying (analytical drying): Continue heating to 30℃ and keep drying for 5 hours to remove bound water until the moisture content of the material is ≤5wt%, thus obtaining compound freeze-dried staple food.

[0063] ⑤ Discharge and Packaging: After freeze-drying, nitrogen is introduced into the vacuum freeze-drying chamber to break the air. In a dry environment with a relative humidity of ≤20%, the compound freeze-dried staple food is packed into aluminum foil bags and sealed with nitrogen.

[0064] (2) Preparation of functional nutritional powder Weigh out the goat milk powder, glucose, whey protein powder, compound electrolyte, vitamin premix and green-lipped mussel powder according to the weight parts, put them into a three-dimensional motion mixer, mix for 30 minutes until they are evenly mixed to obtain functional nutritional powder; package the functional nutritional powder into aluminum foil bags and seal them.

[0065] (3) Finished product assembly By using a weight ratio of 8:1 for compound freeze-dried staple food and functional nutritional powder, the relatively independently packaged compound freeze-dried staple food and functional nutritional powder are placed together in the same outer packaging bag to produce freeze-dried instant food that can quickly replenish pets' energy.

[0066] Example 2 This embodiment provides a freeze-dried instant food for quickly replenishing pet energy, comprising: a compound freeze-dried staple food and functional nutritional powder, which are independent of each other; the weight ratio of the compound freeze-dried staple food to the functional nutritional powder is 8:1. To use the freeze-dried instant food for quickly replenishing pet energy, the compound freeze-dried staple food and functional nutritional powder are mixed, then mixed with drinking water before consumption.

[0067] In this embodiment of the invention, the compound freeze-dried staple food, by weight, consists of the following components: 40 parts chicken breast; 15 parts duck heart; 15 parts salmon; 6 parts beef liver; 5 parts whole egg liquid; 5 parts pumpkin powder; 0.4 parts modified nano zinc alginate; and 1 part trehalose.

[0068] The preparation method of the modified nano-zinc alginate includes the following steps: Step S1: Prepare a 2.2 wt% sodium alginate aqueous solution and a 1.1 wt% chitosan acetic acid solution, respectively. Specifically, sodium alginate is added to deionized water and stirred to dissolve, thus obtaining a sodium alginate aqueous solution; and chitosan is added to a 1.1% acetic acid solution and stirred to dissolve, thus obtaining a chitosan acetic acid solution; the sodium alginate aqueous solution and the chitosan acetic acid solution are mixed at a weight ratio of 3.8:1 and stirred at room temperature for 30 minutes to obtain an aqueous phase solution.

[0069] Step S2: Add Span-80 to liquid paraffin to prepare an oil phase solution containing Span-80 with a concentration of 2.4 wt%; then, at room temperature and with stirring at 800 rpm, add the aqueous phase solution dropwise to the oil phase solution containing Span-80 at a dropping rate of 2 mL / min; after the addition is complete, transfer the material to a high-shear homogenizer and homogenize at 13000 rpm for 6 min to obtain a W / O emulsion.

[0070] The volume ratio of the aqueous phase solution to the oil phase solution containing Span-80 is controlled to be 1:5.2.

[0071] Step S3: Add ZnCl2 to an ethanol aqueous solution (volume concentration 45%) to prepare a zinc chloride solution with a concentration of 1.4 mol / L; under stirring conditions at room temperature, add the zinc chloride solution dropwise to the W / O emulsion at a dropping rate of 1.2 mL / min; after the addition is complete, continue stirring at room temperature for 5 h, then centrifuge to collect the solids. The solids are washed sequentially with isopropanol and deionized water, and then freeze-dried to obtain chitosan-modified nano-zinc alginate composite particles, i.e., modified nano-zinc alginate.

[0072] The weight ratio of zinc chloride solution to W / O emulsion is 1:26.

[0073] In this embodiment of the invention, the functional nutritional powder, by weight, consists of the following components: 70 parts goat milk powder; 15 parts glucose; 10 parts whey protein powder; 2 parts compound electrolyte; 1.5 parts vitamin premix; and 1 part green-lipped mussel powder.

[0074] The composite electrolyte is composed of potassium chloride and calcium carbonate; the weight ratio of potassium chloride to calcium carbonate is 1:2.

[0075] The vitamin premix consists of vitamin B1, vitamin B2, vitamin B6, and vitamin E; the weight ratio of vitamin B1, vitamin B2, vitamin B6, and vitamin E is 1:1:1:10.

[0076] This embodiment also provides a method for preparing the aforementioned freeze-dried instant food for quickly replenishing pet energy, the specific steps of which are as follows: (1) Preparation of compound freeze-dried staple food: ① Raw material pretreatment: Remove the tendons and excess fat from fresh chicken breast, duck heart, salmon, and beef liver, and cut them into 0.8cm particles. For easier handling, the beef liver can be blanched in boiling water to set its shape before being diced.

[0077] ② Mixing: According to the weight parts, place the granules prepared from the above raw materials, whole egg liquid, pumpkin powder, modified nano zinc alginate, and trehalose into a vacuum tumbler and tumble at low speed for 15 minutes at 2°C to make the auxiliary materials (whole egg liquid, pumpkin powder, modified nano zinc alginate, and trehalose) evenly coat the granules to obtain a mixture.

[0078] ③ Spreading and Quick-Freezing: The mixture is thoroughly mixed with sodium carboxymethyl starch at a weight ratio of 100:1.2. The mixture is then spread into freeze-drying trays, maintaining a thickness of 1.5 cm. The trays are then placed in a quick-freezing chamber at -38℃ for rapid freezing, lowering the core temperature of the material to below -18℃, thus obtaining the frozen material. The addition of sodium carboxymethyl starch ensures that the compound freeze-dried staple food disintegrates rapidly upon contact with water, improving the rehydration effect.

[0079] ④ Vacuum freeze drying: Transfer the quick-frozen material into the vacuum freeze drying chamber, start the vacuum pump, maintain the vacuum degree in the vacuum freeze drying chamber at 35 Pa, and then perform drying in two stages: Primary drying (sublimation drying): The material temperature is raised from -35℃ to 0℃ at a heating rate of 6℃ / h, and then kept at that temperature for 9 hours to remove most of the free water.

[0080] Secondary drying (analytical drying): Continue heating to 25℃ and keep drying for 5 hours to remove bound water until the moisture content of the material is ≤5wt%, thus obtaining compound freeze-dried staple food.

[0081] ⑤ Discharge and Packaging: After freeze-drying, nitrogen is introduced into the vacuum freeze-drying chamber to break the air. In a dry environment with a relative humidity of ≤20%, the compound freeze-dried staple food is packed into aluminum foil bags and sealed with nitrogen.

[0082] (2) Preparation of functional nutritional powder Weigh out the goat milk powder, glucose, whey protein powder, compound electrolyte, vitamin premix and green-lipped mussel powder according to the weight parts, put them into a three-dimensional motion mixer, mix for 30 minutes until they are evenly mixed to obtain functional nutritional powder; package the functional nutritional powder into aluminum foil bags and seal them.

[0083] (3) Finished product assembly By using a weight ratio of 8:1 for compound freeze-dried staple food and functional nutritional powder, the relatively independently packaged compound freeze-dried staple food and functional nutritional powder are placed together in the same outer packaging bag to produce freeze-dried instant food that can quickly replenish pets' energy.

[0084] Comparative Example 1 Comparative Example 1 adopts the technical solution of Example 1, except that the addition of modified nano-zinc alginate is omitted in the compound freeze-dried staple food; and the addition of green-lipped mussel powder is omitted in the functional nutritional powder.

[0085] Experimental Example 1 A feeding trial was conducted on cats to test the freeze-dried instant cat food for rapid energy replenishment of pets according to the present invention. Specifically, 80 healthy cats (aged 9-10 years) were selected and divided into 4 groups. Groups 1-3 were fed the freeze-dried instant cat food of Example 1, Example 2, and Comparative Example 1, respectively. Group 4 was fed an equal amount of commercially available high-energy recovery cat food as a control group. The feeding trial lasted for 42 days (7 weeks) to evaluate the palatability, safety, and efficacy of the freeze-dried instant cat food for rapid energy replenishment of pets according to the present invention.

[0086] In the feeding trial, the percentage of food intake consumed by cats in each group was recorded on days 1, 14, 28, and 42 to assess the palatability of each food. The specific results are shown in the table below:

[0087] It can be seen that the compound freeze-dried instant food of Examples 1-2 is highly attractive to cats, with a high proportion of consumption, good acceptance rate, and good palatability, which can lay the foundation for the rapid replenishment of pets' energy.

[0088] In the feeding trial, the weight change rate (based on the initial weight), body condition BCS score, digestive tolerance (good / bad fecal score rate), and adverse reactions of cats in groups 1 and 2 were statistically analyzed on days 1, 14, and 28. Simultaneously, the alanine aminotransferase activity (ALT), creatinine (CREA), serum potassium, serum calcium, hematocrit, and white blood cell count in the blood of cats in groups 1 and 2 were measured to assess the safety of each diet. Specific results are shown in the table below, where "+" indicates an improvement compared to the D1 baseline, and "-" indicates a decrease compared to the D1 baseline.

[0089]

[0090] It can be seen that during the 42-day feeding period, all cats in groups 1 and 2 were in good physical condition, maintained healthy weight gain, and did not exhibit abnormal obesity. Furthermore, the compound freeze-dried instant food showed good adaptability to the cats' digestive systems, with high stool consistency and a low rate of soft stools. Simultaneously, blood indicators showed normal liver and kidney function in all cats, indicating that the compound freeze-dried instant food did not burden the cats' liver and kidneys, did not increase their metabolic burden, and that their immune systems remained stable without inflammation. Overall, the compound freeze-dried instant food demonstrated good safety.

[0091] Furthermore, on day 42 of the feeding trial, muscle mass, coat quality, and mental state of the cats in each group were scored, and the activity endurance index, daily spontaneous activity time, and jumping ability recovery level of the cats in each group were also statistically evaluated. The specific results are shown in the table below:

[0092] It can be seen that the compound freeze-dried instant food of Examples 1-2 can effectively improve the muscle quality, fur quality and mental state of cats; at the same time, it can also effectively improve the cats' activity endurance, jumping recovery ability and daily spontaneous activity time, all of which are significantly improved compared with the control group.

[0093] Unless otherwise stated, all percentages used in this invention are mass percentages.

[0094] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A freeze-dried instant food for quickly replenishing pet energy, characterized in that, This includes independent compound freeze-dried staple foods and functional nutritional powders; The compound freeze-dried staple food is composed of the following ingredients: chicken breast, duck heart, salmon, beef liver, whole egg liquid, pumpkin powder, modified nano zinc alginate, and trehalose. The modified nano-zinc alginate is chitosan-modified nano-zinc alginate. The functional nutritional powder is composed of the following ingredients: goat milk powder, glucose, whey protein powder, compound electrolytes, vitamin premix, and green-lipped mussel powder.

2. The freeze-dried instant food for quickly replenishing pet energy according to claim 1, characterized in that, The weight ratio of the compound freeze-dried staple food to the functional nutritional powder is 8:

1.

3. The freeze-dried instant food for quickly replenishing pet energy according to claim 1, characterized in that, The compound freeze-dried staple food, by weight, consists of the following ingredients: 40-50 parts chicken breast, 15 parts duck heart, 10-15 parts salmon, 5-6 parts beef liver, 5 parts whole egg liquid, 5 parts pumpkin powder, 0.3-0.4 parts modified nano zinc alginate, and 1 part trehalose.

4. The freeze-dried instant food for quickly replenishing pet energy according to claim 1, characterized in that, The functional nutritional powder, by weight, consists of the following components: 70 parts goat milk powder, 15 parts glucose, 10 parts whey protein powder, 2 parts compound electrolytes, 1.5 parts vitamin premix, and 1 part green-lipped mussel powder. The composite electrolyte is composed of potassium chloride and calcium carbonate; the weight ratio of potassium chloride to calcium carbonate is 1:

2. The vitamin premix consists of vitamin B1, vitamin B2, vitamin B6, and vitamin E; the weight ratio of vitamin B1, vitamin B2, vitamin B6, and vitamin E is 1:1:1:

10.

5. The freeze-dried instant food for quickly replenishing pet energy according to claim 1, characterized in that, The preparation method of the modified nano-zinc alginate includes the following steps: Step S1: Mix sodium alginate aqueous solution and chitosan acetic acid solution evenly to obtain an aqueous solution; Step S2: At room temperature, the aqueous phase solution is added dropwise to the oil phase solution containing Span-80 with stirring, and then sheared and homogenized to obtain a W / O emulsion. Step S3: At room temperature, zinc chloride solution is added dropwise to the W / O emulsion with stirring. The mixture is stirred at room temperature, and the solid is separated and collected. The solid is washed and dried to obtain modified nano zinc alginate.

6. The freeze-dried instant food for quickly replenishing pet energy according to claim 5, characterized in that, In step S1, the concentration of the sodium alginate aqueous solution is 2-2.2 wt%. In the acetic acid solution of chitosan, the chitosan concentration is 1-1.1 wt% and the acetic acid volume concentration is 1-1.1%.

7. The freeze-dried instant food for quickly replenishing pet energy according to claim 5, characterized in that, In step S2, the concentration of Span-80 in the oil phase solution containing Span-80 is 2.2-2.4 wt%. The dropping rate of the aqueous solution is 1.5-2 mL / min; The rotation speed for shearing and homogenization is 12000-13000 rpm, and the shearing and homogenization time is 5-6 min.

8. The freeze-dried instant food for quickly replenishing pet energy according to claim 5, characterized in that, In step S3, the zinc chloride solution is an aqueous solution of zinc chloride in ethanol; the concentration of zinc chloride in the zinc chloride solution is 1.2-1.4 mol / L, and the volume concentration of ethanol is 45-50%. The dropping rate of zinc chloride solution is 1-1.2 mL / min; The zinc chloride solution was added dropwise to the W / O emulsion and stirred at room temperature for 4-5 hours.

9. The freeze-dried instant food for quickly replenishing pet energy according to claim 5, characterized in that, In step S1, the weight ratio of sodium alginate aqueous solution to chitosan acetic acid solution is 3.8-4:

1. In step S2, the volume ratio of the aqueous solution to the oil solution containing Span-80 is 1:5-5.

2. In step S3, the weight ratio of zinc chloride solution to W / O emulsion is 1:25-26.

10. A method for preparing freeze-dried instant food for rapidly replenishing pet energy as described in any one of claims 1-9, characterized in that, The process includes the following steps: preparing compound freeze-dried staple food and preparing functional nutritional powder; The method for preparing the compound freeze-dried staple food is as follows: chicken breast, duck heart, salmon, and beef liver are cut into granules and then mixed with whole egg liquid, pumpkin powder, modified nano zinc alginate, and trehalose until evenly mixed to obtain a mixture; the mixture is then freeze-dried until the moisture content is ≤5wt% to obtain the compound freeze-dried staple food. The method for preparing the functional nutritional powder is to mix goat milk powder or beef bone broth powder, glucose, whey protein powder, compound electrolyte, vitamin premix, and green-lipped mussel powder evenly to obtain the functional nutritional powder.

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