A dog food that reduces tear stains and has a cooling and detoxifying effect, and its preparation method.

Abstract

This invention relates to the field of pet food preparation technology, and specifically discloses a dog food for reducing heat and tear stains and its preparation method, comprising the following raw materials in parts by weight: 40-70 parts animal protein source; 30-50 parts cereal carbohydrate source; 7-15 parts lipids; 25-35 parts heat-clearing and detoxifying functional composition; 0.5-3 parts vitamin and mineral premix; 0.5-3 parts compound prebiotic; 0.1-1.0 parts natural antioxidant; wherein the heat-clearing and detoxifying functional composition is made from the following raw materials in parts by weight: 6-18 parts chrysanthemum, 2-8 parts honeysuckle, 7-12 parts poria cocos, 5-8 parts lotus seed, 17-25 parts duck meat powder, and 8-15 parts pear powder. This dog food for reducing heat and tear stains and its preparation method, through compound enzymatic hydrolysis and directional fermentation, significantly improves the bioavailability and pharmacological activity of the active ingredients, and simultaneously generates probiotic metabolites, which, after membrane separation purification and microencapsulation, effectively improve palatability.

Description

Technical Field

[0001] This invention relates to the field of pet food preparation technology, specifically to a dog food that reduces tear stains and has a cooling and detoxifying effect, as well as its preparation method. Background Technology

[0002] Currently, most pet foods claiming to have heat-clearing and detoxifying functions rely on the direct addition of plant raw materials such as chrysanthemum and honeysuckle, or their simple extracts. However, these traditional methods have significant drawbacks: conventional extraction methods result in low extraction rates and bioavailability of active ingredients (such as chlorogenic acid and flavonoids), and heat-sensitive components are easily deactivated during processing and storage; unpleasant flavors of the raw materials themselves affect palatability, and simple physical mixing cannot guarantee stable and uniform efficacy. More importantly, their mechanism of action is limited to the direct pharmacological effects of the herbs, failing to address the deeper root causes closely related to pets' symptoms of heatiness, such as intestinal flora imbalance and systemic inflammation, thus making it difficult to achieve long-term and fundamental improvement. Therefore, developing a novel functional composition that can efficiently extract and transform active ingredients, improve bioavailability and stability, and synergistically work through multiple targets of intestinal regulation and systemic anti-inflammatory effects has become an urgent technical need to improve the technological content of pet functional foods and effectively solve problems such as tear stains. Summary of the Invention

[0003] To solve the above technical problems, the present invention is achieved through the following technical solution: a dog food for reducing heat and tear stains and its preparation method, comprising the following raw materials in parts by weight: 40-70 servings of animal protein; 30-50 servings of cereal-based carbohydrates; Lipids: 7-15 parts; 25-35 parts of a heat-clearing and fire-reducing functional composition; Vitamin and mineral premix 0.5-3 parts; Compound prebiotics 0.5-3 parts; 0.1-1.0 parts of natural antioxidants; The heat-clearing and fire-reducing functional composition is made from the following raw materials in parts by weight: 6-18 parts chrysanthemum, 2-8 parts honeysuckle, 7-12 parts poria cocos, 5-8 parts lotus seeds, 17-25 parts duck meat powder, and 8-15 parts pear powder.

[0004] Preferably, the animal protein source is selected from one or more of chicken meal, duck meal, fish meal, mutton meal, and hydrolyzed animal protein.

[0005] Preferably, the cereal carbohydrate source is selected from one or more of brown rice, oats, millet, dried sweet potato, and tapioca flour.

[0006] Preferably, the lipids are selected from one or more of chicken oil, fish oil, soybean oil, flaxseed oil, and coconut oil.

[0007] Preferably, the compound prebiotic is a mixture of fructooligosaccharides and mannan oligosaccharides in a mass ratio of 2:1.

[0008] Preferably, the natural antioxidant is rosemary extract or vitamin E.

[0009] Preferably, the heat-clearing and fire-reducing functional composition can also be replaced with a modified heat-clearing and fire-reducing functional composition, prepared as follows: Dried chrysanthemum, honeysuckle, poria cocos, and lotus seeds are mixed in a certain proportion and then ultra-finely pulverized to a particle size D90≤45μm to obtain a mixed powder. Add 8 times its weight of deionized water to the mixed powder, adjust the pH to 5, and heat to 50°C; Enzymatic hydrolysis was performed by adding a compound enzyme preparation, which included 1.5% cellulase, 0.8% pectinase and 0.5% β-glucanase by substrate weight, and the hydrolysis time was 3 hours. After enzymatic hydrolysis, the temperature is raised to above 90°C and maintained for 10 minutes to inactivate the enzyme. Cool the enzymatic hydrolysate to 70°C and perform the first stage of water extraction: keep it warm and extract for 2 hours, then filter out the first extract. Add 6 times its weight of 40% edible ethanol solution to the filter residue for the second stage of alcohol extraction: reflux extraction at 85℃ for 1 hour, and filter out the second extract; Combine the two extracts; The combined extracts were first microfiltered through a 100nm ceramic membrane to remove macromolecular colloids, starch and insoluble matter; The microfiltrate is then passed through a spiral wound organic ultrafiltration membrane with a molecular weight cutoff of 3000 Da to separate and enrich the target active small molecules, while removing some large molecular impurities. Collect the ultrafiltration permeate and concentrate it under vacuum at a temperature below 60°C to 1 / 10 of its original volume to obtain concentrate A; Concentrate A was diluted to a soluble solids content of 12% and used as a fermentation medium. Adjust the pH to 6.0, inoculate with compound probiotics for anaerobic fermentation. The compound probiotics are a mixture of Lactobacillus plantarum and Lactobacillus acidophilus. The total inoculation volume is 3% of the culture medium volume, and the ratio of bacteria is 2:1. Fermentation at 37°C for 36 hours converts some flavonoid glycosides into aglycones, degrades some polysaccharides into oligosaccharides, and generates new organic acids and bacteriocins. After pasteurization, the fermentation liquid is mixed with duck meat powder and pear powder; A composite encapsulating wall material is added, wherein the wall material is composed of maltodextrin, gum arabic, and sodium caseinate in a mass ratio of 5:3:2, and the total amount of the wall material added is 20% of the total solids. After being mixed evenly, the mixture is spray-dried to obtain a microencapsulated modified heat-clearing and fire-reducing functional composition powder. A method for preparing dog food that reduces heat and tear stains includes the following steps: S1. Preparation of heat-clearing and fire-reducing functional composition: Weigh chrysanthemum, honeysuckle, poria cocos and lotus seeds according to the ratio, extract twice with water, combine the extracts, concentrate and obtain Chinese medicine concentrate; mix duck meat powder and pear powder with the Chinese medicine concentrate evenly, dry and pulverize to obtain the heat-clearing and fire-reducing functional composition powder. S2. Mixing: Mix animal protein source, cereal carbohydrate source, lipids, heat-clearing and fire-reducing functional composition powder, as well as optional added vitamin and mineral premix, compound prebiotics, and natural antioxidants to obtain a uniform premix. S3. Conditioning and granulation: The premixed material is fed into a conditioner and steam is introduced for conditioning. After conditioning, the material is pressed into shape by a granulator to obtain wet granules. S4. Drying and cooling: The wet granules are dried and then cooled to room temperature to obtain the heat-clearing and fire-reducing dog food.

[0010] Preferably, in step S1, the conditions for water extraction are: the amount of water added each time is 8 times the total weight of the raw material, the extraction temperature is 90°C, the extraction time is 1 hour each time, and the concentration is to concentrate the extract to a paste with a relative density of 1.20 at 50°C.

[0011] Preferably, in step S3, the steam pressure for conditioning is 0.2 MPa, the conditioning time is 2 minutes, and the moisture content of the material after conditioning is 15%; the ring die diameter of the pellet mill is 2.0 mm.

[0012] It has the following beneficial effects: Through compound enzymatic hydrolysis and targeted fermentation, the bioavailability and pharmacological activity of active ingredients are significantly improved, and probiotic metabolites are generated simultaneously. After membrane separation purification and microencapsulation, palatability is effectively improved, and the stability of active ingredients during processing and storage is ensured, achieving long-lasting sustained release. Breaking through the traditional single heat-clearing pathway, a multi-target synergistic system of highly efficient active ingredient absorption + intestinal microecological source regulation + systemic anti-inflammatory regulation is constructed, reducing the generation of internal heat from the root. In terms of application effects, it is expected to produce faster, more significant and more lasting improvement effects on symptoms of internal heat such as tear stains, eye discharge, bad breath and dry feces in pets. Detailed Implementation

[0013] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0014] In a first embodiment, the present invention provides a technical solution: a dog food for reducing heat and tear stains, comprising the following ingredients in parts by weight: 40 servings of animal protein; 30 servings of cereal-based carbohydrates; Lipids: 7 parts; 25 parts of a heat-clearing and fire-reducing functional composition; 0.5 parts of vitamin and mineral premix; 0.5 parts of compound prebiotics; 0.1 parts of natural antioxidants; The heat-clearing and fire-reducing functional composition is made from the following raw materials in parts by weight: 6 parts chrysanthemum, 2 parts honeysuckle, 7 parts poria cocos, 5 parts lotus seeds, 17 parts duck meat powder, and 8 parts pear powder. The preparation method is as follows: S1. Preparation of heat-clearing and fire-reducing functional composition: weigh chrysanthemum, honeysuckle, poria cocos and lotus seeds according to the ratio, extract twice with water, combine the extracts, concentrate to obtain Chinese medicine concentrate, mix duck meat powder and pear powder with the Chinese medicine concentrate evenly, dry and pulverize to obtain the heat-clearing and fire-reducing functional composition powder. S2. Mixing: Mix animal protein source, cereal carbohydrate source, lipids, heat-clearing and fire-reducing functional composition powder, as well as optional added vitamin and mineral premix, compound prebiotics, and natural antioxidants to obtain a uniform premix. S3. Conditioning and granulation: The premixed material is fed into a conditioner and steam is introduced for conditioning. After conditioning, the material is pressed into shape by a granulator to obtain wet granules. S4. Drying and cooling: The wet granules are dried and then cooled to room temperature to obtain the heat-clearing and fire-reducing dog food.

[0015] In a second embodiment, the present invention provides a technical solution: a dog food for reducing heat and tear stains, comprising the following ingredients in parts by weight: 55 portions of animal protein; 40 servings of cereal-based carbohydrates; Lipids 11 parts; 30 parts of a heat-clearing and fire-reducing functional composition; 2 servings of vitamin and mineral premix; Two servings of compound prebiotics; 0.5 parts natural antioxidants; The heat-clearing and fire-reducing functional composition is made from the following raw materials in parts by weight: 11 parts chrysanthemum, 5 parts honeysuckle, 9 parts poria cocos, 6 parts lotus seeds, 21 parts duck meat powder, and 11 parts pear powder. The preparation method is as follows: S1. Preparation of heat-clearing and fire-reducing functional composition: Weigh chrysanthemum, honeysuckle, poria cocos and lotus seeds according to the ratio, extract twice with water, combine the extracts, concentrate and obtain Chinese medicine concentrate; mix duck meat powder and pear powder with the Chinese medicine concentrate evenly, dry and pulverize to obtain the heat-clearing and fire-reducing functional composition powder. S2. Mixing: Mix animal protein source, cereal carbohydrate source, lipids, heat-clearing and fire-reducing functional composition powder, as well as optional added vitamin and mineral premix, compound prebiotics, and natural antioxidants to obtain a uniform premix. S3. Conditioning and granulation: The premixed material is fed into a conditioner and steam is introduced for conditioning. After conditioning, the material is pressed into shape by a granulator to obtain wet granules. S4. Drying and cooling: The wet granules are dried and then cooled to room temperature to obtain the heat-clearing and fire-reducing dog food.

[0016] In a third embodiment, the present invention provides a technical solution: a dog food for reducing heat and tear stains, comprising the following ingredients in parts by weight: 70 servings of animal protein; 50 servings of cereal-based carbohydrates; Lipids 15 parts; 35 parts of a heat-clearing and fire-reducing functional composition; 3 servings of vitamin and mineral premix; 3 servings of compound prebiotics; One part natural antioxidant; The heat-clearing and fire-reducing functional composition is made from the following raw materials in parts by weight: 18 parts chrysanthemum, 8 parts honeysuckle, 12 parts poria cocos, 8 parts lotus seeds, 25 parts duck meat powder, and 15 parts pear powder. The preparation method is as follows: S1. Preparation of heat-clearing and fire-reducing functional composition: Weigh chrysanthemum, honeysuckle, poria cocos and lotus seeds according to the ratio, extract twice with water, combine the extracts, concentrate and obtain Chinese medicine concentrate; mix duck meat powder and pear powder with the Chinese medicine concentrate evenly, dry and pulverize to obtain the heat-clearing and fire-reducing functional composition powder. S2. Mixing: Mix animal protein source, cereal carbohydrate source, lipids, heat-clearing and fire-reducing functional composition powder, as well as optional added vitamin and mineral premix, compound prebiotics, and natural antioxidants to obtain a uniform premix. S3. Conditioning and granulation: The premixed material is fed into a conditioner and steam is introduced for conditioning. After conditioning, the material is pressed into shape by a granulator to obtain wet granules. S4. Drying and cooling: The wet granules are dried and then cooled to room temperature to obtain the heat-clearing and fire-reducing dog food.

[0017] Fourth embodiment: The present invention provides a technical solution: a dog food for reducing heat and tear stains, comprising the following ingredients by weight: 55 portions of animal protein; 40 servings of cereal-based carbohydrates; Lipids 11 parts; 30 parts of a modified heat-clearing and fire-reducing functional composition; 2 servings of vitamin and mineral premix; Two servings of compound prebiotics; 0.5 parts natural antioxidants; The modified heat-clearing and fire-reducing functional composition is made from the following raw materials in parts by weight: 11 parts chrysanthemum, 5 parts honeysuckle, 9 parts poria cocos, 6 parts lotus seeds, 21 parts duck meat powder, and 11 parts pear powder. The preparation method is as follows: S1. Preparation of modified heat-clearing and fire-reducing functional composition: Dried chrysanthemum, honeysuckle, poria cocos, and lotus seeds are mixed in a certain proportion and then ultra-finely pulverized to a particle size D90≤45μm to obtain a mixed powder. Add 8 times its weight of deionized water to the mixed powder, adjust the pH to 5, and heat to 50°C; Enzymatic hydrolysis was performed by adding a compound enzyme preparation, which included 1.5% cellulase, 0.8% pectinase and 0.5% β-glucanase by substrate weight, and the hydrolysis time was 3 hours. After enzymatic hydrolysis, the temperature is raised to above 90°C and maintained for 10 minutes to inactivate the enzyme. Cool the enzymatic hydrolysate to 70°C and perform the first stage of water extraction: keep it warm and extract for 2 hours, then filter out the first extract. Add 6 times its weight of 40% edible ethanol solution to the filter residue for the second stage of alcohol extraction: reflux extraction at 85℃ for 1 hour, and filter out the second extract; Combine the two extracts; The combined extracts were first microfiltered through a 100nm ceramic membrane to remove macromolecular colloids, starch and insoluble matter; The microfiltrate is then passed through a spiral wound organic ultrafiltration membrane with a molecular weight cutoff of 3000 Da to separate and enrich the target active small molecules, while removing some large molecular impurities. Collect the ultrafiltration permeate and concentrate it under vacuum at a temperature below 60°C to 1 / 10 of its original volume to obtain concentrate A; Concentrate A was diluted to a soluble solids content of 12% and used as a fermentation medium. Adjust the pH to 6.0, inoculate with compound probiotics for anaerobic fermentation. The compound probiotics are a mixture of Lactobacillus plantarum and Lactobacillus acidophilus. The total inoculation volume is 3% of the culture medium volume, and the ratio of bacteria is 2:1. Fermentation at 37°C for 36 hours converts some flavonoid glycosides into aglycones, degrades some polysaccharides into oligosaccharides, and generates new organic acids and bacteriocins. After pasteurization, the fermentation liquid is mixed with duck meat powder and pear powder; A composite encapsulating wall material is added, wherein the wall material is composed of maltodextrin, gum arabic, and sodium caseinate in a mass ratio of 5:3:2, and the total amount of the wall material added is 20% of the total solids. After being mixed evenly, the mixture is spray-dried to obtain a microencapsulated modified heat-clearing and fire-reducing functional composition powder. S2. Mixing: Mix animal protein source, cereal carbohydrate source, lipids, heat-clearing and fire-reducing functional composition powder, as well as optional added vitamin and mineral premix, compound prebiotics, and natural antioxidants to obtain a uniform premix. S3. Conditioning and granulation: The premixed material is fed into a conditioner and steam is introduced for conditioning. After conditioning, the material is pressed into shape by a granulator to obtain wet granules. S4. Drying and cooling: The wet granules are dried and then cooled to room temperature to obtain the heat-clearing and fire-reducing dog food.

[0018] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A dog food that reduces internal heat and tear stains, characterized in that, Including the following parts by weight of raw materials: 40-70 servings of animal protein; 30-50 servings of cereal-based carbohydrates; Lipids: 7-15 parts; 25-35 parts of a heat-clearing and fire-reducing functional composition; Vitamin and mineral premix 0.5-3 parts; Compound prebiotics 0.5-3 parts; 0.1-1.0 parts of natural antioxidants; The heat-clearing and fire-reducing functional composition is made from the following raw materials in parts by weight: 6-18 parts chrysanthemum, 2-8 parts honeysuckle, 7-12 parts poria cocos, 5-8 parts lotus seeds, 17-25 parts duck meat powder, and 8-15 parts pear powder.

2. The dog food for reducing heat and tear stains according to claim 1, characterized in that, The animal protein source is selected from one or more of chicken meal, duck meal, fish meal, mutton meal, and hydrolyzed animal protein.

3. The dog food for reducing heat and tear stains according to claim 1, characterized in that, The cereal carbohydrate source is selected from one or more of brown rice, oats, millet, dried sweet potato, and tapioca flour.

4. The dog food for reducing heat and tear stains according to claim 1, characterized in that, The lipids are selected from one or more of chicken oil, fish oil, soybean oil, flaxseed oil, and coconut oil.

5. The dog food for reducing heat and tear stains according to claim 1, characterized in that, The compound prebiotic is a mixture of fructooligosaccharides and mannan oligosaccharides in a mass ratio of 2:

1.

6. The dog food for reducing heat and tear stains according to claim 1, characterized in that, The natural antioxidant is rosemary extract or vitamin E.

7. The dog food for reducing tear stains and reducing internal heat according to claim 1, characterized in that, The heat-clearing and fire-reducing functional composition can also be replaced with a modified heat-clearing and fire-reducing functional composition, and the preparation method is as follows: Dried chrysanthemum, honeysuckle, poria cocos, and lotus seeds are mixed in a certain proportion and then ultra-finely pulverized to a particle size D90≤45μm to obtain a mixed powder. Add 8 times its weight of deionized water to the mixed powder, adjust the pH to 5, and heat to 50°C; Enzymatic hydrolysis was performed by adding a compound enzyme preparation, which included 1.5% cellulase, 0.8% pectinase and 0.5% β-glucanase by substrate weight, and the hydrolysis time was 3 hours. After enzymatic hydrolysis, the temperature is raised to above 90°C and maintained for 10 minutes to inactivate the enzyme. Cool the enzymatic hydrolysate to 70°C and perform the first stage of water extraction: keep it warm and extract for 2 hours, then filter out the first extract. Add 6 times its weight of 40% edible ethanol solution to the filter residue for the second stage of alcohol extraction: reflux extraction at 85℃ for 1 hour, and filter out the second extract; Combine the two extracts; The combined extracts were first microfiltered through a 100nm ceramic membrane to remove macromolecular colloids, starch and insoluble matter; The microfiltrate is then passed through a spiral wound organic ultrafiltration membrane with a molecular weight cutoff of 3000 Da to separate and enrich the target active small molecules, while removing some large molecular impurities. Collect the ultrafiltration permeate and concentrate it under vacuum at below 60°C to 1 / 10 of its original volume to obtain concentrate A; Concentrate A was diluted to a soluble solids content of 12% and used as a fermentation medium. Adjust the pH to 6.0, inoculate with compound probiotics for anaerobic fermentation. The compound probiotics are a mixture of Lactobacillus plantarum and Lactobacillus acidophilus. The total inoculation volume is 3% of the culture medium volume, and the ratio of bacteria is 2:

1. Fermentation at 37°C for 36 hours converts some flavonoid glycosides into aglycones, degrades some polysaccharides into oligosaccharides, and generates new organic acids and bacteriocins. After pasteurization, the fermentation liquid is mixed with duck meat powder and pear powder; A composite encapsulating wall material is added, wherein the wall material is composed of maltodextrin, gum arabic, and sodium caseinate in a mass ratio of 5:3:2, and the total amount of the wall material added is 20% of the total solids. After being mixed evenly, the mixture is spray-dried to obtain a microencapsulated modified heat-clearing and fire-reducing functional composition powder.

8. A method for preparing dog food that reduces heat and tear stains, characterized in that, Includes the following steps: S1. Preparation of heat-clearing and fire-reducing functional composition: weigh chrysanthemum, honeysuckle, poria cocos and lotus seeds according to the ratio, extract twice with water, combine the extracts, concentrate to obtain Chinese medicine concentrate, mix duck meat powder and pear powder with the Chinese medicine concentrate evenly, dry and pulverize to obtain the heat-clearing and fire-reducing functional composition powder. S2. Mixing: Mix animal protein source, cereal carbohydrate source, lipids, heat-clearing and fire-reducing functional composition powder, as well as optional added vitamin and mineral premix, compound prebiotics, and natural antioxidants to obtain a uniform premix. S3. Conditioning and granulation: The premixed material is fed into a conditioner and steam is introduced for conditioning. After conditioning, the material is pressed into shape by a granulator to obtain wet granules. S4. Drying and cooling: The wet granules are dried and then cooled to room temperature to obtain the heat-clearing and fire-reducing dog food.

9. A method for preparing a dog food for reducing heat and tear stains according to claim 8, characterized in that, In step S1, the conditions for water extraction are as follows: the amount of water added each time is 8 times the total weight of the raw material, the extraction temperature is 90℃, the extraction time is 1 hour each time, and the concentration is to concentrate the extract to a paste with a relative density of 1.20 at 50℃.

10. A method for preparing a dog food for reducing heat and tear stains according to claim 8, characterized in that, In step S3, the steam pressure for conditioning is 0.2 MPa, the conditioning time is 2 minutes, and the moisture content of the material after conditioning is 15%; the ring die diameter of the pellet mill is 2.0 mm.