Summer-heat-relieving pet wet food capable of being eaten by freezing

Abstract

Belonging to the technical field of pet food, the invention discloses a summer-heat relieving pet wet food capable of being eaten by freezing, which comprises the following raw materials by weight: 10-30 parts of animal meat, 1-3 parts of vegetable protein, 0.5-5 parts of starch, 4-10 parts of grease, 0-0.2 part of pigment, 0.3-0.8 part of a modifier, 0.2-0.5 part of an emulsifier, 0-2 parts of other colloids, and the balance of water, with the total mass of all the raw materials being 100 parts. The pet wet food capable of relieving summer-heat is low in sweetness, low in calorie and high in palatability, can effectively improve the palatability of the pet food when the pet food is eaten after being frozen, and meanwhile reduces system instability after the pet wet food is unfrozen.

Description

Technical Field

[0001] The invention relates to the technical field of pet food, in particular to a pet food that can be frozen and eaten to relieve summer heat. Background Art

[0002] At present, the known methods for preparing pet food with heat-relief function include: (1) using water and auxiliary materials to prepare pet beverages; (2) using milk raw materials to prepare pet ice cream, ice cream, yogurt, etc. The former should not be frozen, otherwise it will cause intestinal diseases in pets, and the ideal heat-relief effect will not be achieved after the pets eat it. Although the latter has a better heat-relief effect, the storage and transportation costs are high, and the preparation process is usually not sterilized at high temperature. There is a risk of microbial contamination caused by inadequate control of sanitary conditions in the production and processing process, or irregular operation of the product in transportation, storage, sales and other links, resulting in excessive bacterial and microbial content in the contents, which is easy to cause edible pathogen infection and cause food safety problems. At present, no meat puree pet wet food that can be eaten in a frozen state has been found on the market. However, ordinary wet food in a frozen state will cause intestinal emergency symptoms such as soft stools or diarrhea after pets eat it, which will threaten the health of the pets.

[0003] Ordinary pet wet food is generally made of meat as the main ingredient, which is mixed with starch, colloid, palatability additives, etc. The frozen texture of this product is similar to ice cubes, and meltwater stratification will appear after melting. The texture similar to ice cubes is very hard. Although it can relieve heat, it is not very attractive to pets due to the high hardness and frozen state; and the low-temperature wet food after freezing and melting has a serious decrease in palatability for pets due to meltwater stratification.

[0004] In order to maintain the edibility of edible products in a frozen state, avoid high freezing hardness, avoid ice crystals in a frozen state from having a significant impact on the taste of food, and reduce water precipitation and separation after melting, the existing technology usually adds cryoprotectants to edible products, such as sucrose, lactitol, phosphates, etc. However, sugars are used as protective agents and their addition amount needs to reach a high concentration of more than 5% to fully delay the amount of ice crystal formation and reduce the volume of ice crystals. The addition of high concentrations of sugars will seriously affect the palatability of pet food and cause the pet food to have high calories. Excessive intake of phosphates will affect the pet's absorption of calcium, which plays an important role in maintaining its physical health and body performance. In addition, the texture of pet food after freezing can be adjusted by adding a large amount of fat (oil), but this method will greatly increase the calories of the product, which is easy to cause obesity, metabolic syndrome, etc. after pets eat it. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a low-sweetness, low-calorie, highly palatable summer-heat-relieving pet wet food that can be eaten frozen. The present invention also provides a method for preparing the summer-heat-relieving pet wet food that can be eaten frozen.

[0006] The technical solution adopted by the present invention to solve the above technical problems is:

[0007] A kind of pet wet food for relieving summer heat that can be frozen and eaten, comprising the following raw materials in parts by weight: 10-30 parts of animal meat, 1-3 parts of vegetable protein, 0.5-5 parts of starch, 4-10 parts of oil, 0-0.2 parts of pigment, 0.3-0.8 parts of modifier, 0.2-0.5 parts of emulsifier, 0-2 parts of other colloids, and water as the balance, and making the total weight of all raw materials 100 parts.

[0008] Furthermore, the animal meat is one or more of livestock and poultry meat, livestock and poultry meat by-products, fish, and fish meat by-products, wherein livestock and poultry meat is common fresh meat, such as chicken, pork, beef, etc.; the livestock and poultry meat by-products are livestock and poultry meat processing by-products, such as chicken hearts, pork livers, duck bone paste, etc.; the fish meat is common boneless fish meat; the fish meat by-products are fish meat processing by-products, such as fish bone paste, fish skin, etc., and when there are bone raw materials (such as pork bones and fish bones) in the selected livestock and poultry meat by-products and fish meat by-products, their proportion shall not exceed 20% of the total mass of the animal meat.

[0009] Furthermore, the starch is one or more of corn starch, potato starch, tapioca starch, and wheat starch.

[0010] Furthermore, the plant protein is isolated soy protein.

[0011] Furthermore, the oil is one or more of soybean oil, rapeseed oil, sunflower oil and corn oil.

[0012] Furthermore, the pigment is a pigment that complies with the requirements for the type and addition amount of pet feed colorants in the "Safety Use Specifications for Feed Additives".

[0013] Furthermore, the modifier is octenyl succinate polysaccharide.

[0014] Furthermore, the emulsifier is lecithin.

[0015] Furthermore, the other colloids are one or more of carrageenan, gelatin, xanthan gum, guar gum, agar, sodium alginate, konjac gum, and locust bean gum.

[0016] The plant protein is soy protein isolate, specifically acid-thermo-induced soy protein isolate nanoparticles.

[0017] The method for preparing the summer-heat-relieving pet wet food that can be frozen and eaten comprises the following steps:

[0018] (1) preparing acid-thermotropic soy protein isolate nanoparticles, wherein the preparation method of the acid-thermotropic soy protein isolate nanoparticles is as follows: using soy protein isolate commonly used in the field of pet food, placing it in water so that the mass concentration of the protein is 5-9%, stirring it thoroughly, standing it at 2-5° C. for more than 5 hours, adjusting the pH to 5-6, and placing it in a static heating treatment at 90-98° C. for 20-40 minutes, and cooling it to room temperature to obtain an acid-thermotropic soy protein isolate nanoparticle solution;

[0019] (2) adding oil, modifier and emulsifier to the acid-thermo-induced soy protein isolate nanoparticle solution obtained in step (1), and subjecting to high-speed homogenization treatment at a condition of more than 10000 r / min for 90-180 s to obtain a frozen palatability modifier;

[0020] (3) Processing animal meat into meat paste;

[0021] (4) mixing the frozen palatability modifier obtained in step (2) with the meat paste obtained in step (3) and homogenizing and emulsifying the mixture at a temperature not higher than 30° C. using an emulsifier, then adding starch, pigment, other colloids and the remainder of water, and homogenizing and emulsifying the mixture again to obtain a pet wet food starting material;

[0022] (5) transferring the pet wet food obtained in step (4) to a filling machine for filling;

[0023] (6) After the filling is completed, the container is sealed and sterilized at high temperature to obtain a finished product of the summer-heat-relief pet wet food that can be frozen and eaten.

[0024] Furthermore, the high temperature sterilization conditions in step (6) are: temperature 110-130°C, time 30-50 min.

[0025] Low-temperature freezing can significantly reduce the temperature of food. For pets such as dogs and cats that live in hot environments and have no sweat glands on their bodies, consuming low-temperature food can help relieve heat and improve physical comfort. The amount of cold that ordinary dry food can carry is very limited, but wet food has a high specific heat capacity and high water content, so it can carry a large amount of cold. Eating it after freezing can have a good effect of relieving heat and cooling down. For wet food that needs to be frozen, a variety of physical and chemical changes will occur during the freezing process, including fat crystallization, freezing of the water phase, phase change of the interface, biological expansion, etc.; and during the thawing process, some irreversible changes will occur in the pet food system, affecting the stability of the pet food system. The texture after freezing and the stability after thawing are important factors in evaluating its quality.

[0026] In the present application, raw materials commonly used in the field of pet food are used, such as soy protein isolate, vegetable oil, lecithin, edible gum, etc., wherein the soy protein isolate is acid-thermotropic soy protein isolate nanoparticles, and it is combined with oil, modifier and emulsifier under specific conditions to obtain a frozen palatability modifier. The frozen palatability modifier is combined with the main ingredient of pet wet food, animal meat, and the product is protected during the freezing process, thereby improving the palatability of the pet food after freezing and reducing the instability of the system after the pet wet food is thawed.

[0027] Among them, in the frozen palatability modifier system, the fat content plays a direct and decisive role in the palatability of pet wet food after freezing, but high fat will also greatly increase the calories of pet wet food, which can easily lead to pet obesity and other sub-health symptoms. Therefore, the present application combines fat with soy protein isolate to reduce the amount of fat added in pet wet food products while improving the functional and physical properties of the products and improving the frozen palatability of the products; animal meat treated with the frozen palatability modifier can effectively reduce the size of ice crystals during the freezing process, reduce the damage to the gel network formed after the animal meat protein is heated during the freezing / thawing process, and improve the stability of pet wet food products after freezing and thawing. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a state diagram of the product obtained in Example 1 after being frozen in a -18°C environment for 24 hours;

[0029] Figure 2 This is a state diagram of the product obtained in Example 7 after being frozen in a -18°C environment for 24 hours;

[0030] Figure 3 This is a state diagram of the frozen product in Example 1 after being placed in an environment of 25° C. and 50% humidity for 30 minutes;

[0031] Figure 4 This is a diagram showing the state of the frozen product of Example 7 after being placed in an environment of 25°C and 50% humidity for 30 minutes. DETAILED DESCRIPTION

[0032] The technical solution of the present invention is further described in detail below in conjunction with specific embodiments.

[0033] Example 1: A kind of pet wet food for relieving summer heat that can be frozen and eaten, which is composed of the following raw materials in parts by weight: 20 parts of animal meat, 2 parts of vegetable protein, 3 parts of starch, 7 parts of oil, 0.02 parts of pigment, 0.6 parts of modifier, 0.3 parts of emulsifier, 1 part of other colloids, and the balance of water, and the total mass of all raw materials is 100 parts.

[0034] Furthermore, the animal meat is fresh chicken breast; the starch is corn starch and potato starch; the plant protein is soy protein isolate; the oil is sunflower oil; the pigment is β-carotene; the modifier is octenylsuccinate polysaccharide; the emulsifier is lecithin; the other colloids are carrageenan and guar gum; and the plant protein is soy protein isolate, specifically acid-thermotropic soy protein isolate nanoparticles.

[0035] The method for preparing the summer-heat-relieving pet wet food that can be frozen and eaten comprises the following steps:

[0036] (1) preparing acid-thermo-induced soy protein isolate nanoparticles, wherein the preparation method of the acid-thermo-induced soy protein isolate nanoparticles is as follows: taking soy protein isolate and placing it in raw material water so that the mass concentration of the protein is 7%, stirring it fully and then standing it at 4° C. for 15 hours, adjusting the pH to 5.5, and placing it in a static heating environment at 95° C. for 30 minutes, and cooling it to room temperature to obtain an acid-thermo-induced soy protein isolate nanoparticle solution;

[0037] (2) adding oil, modifier and emulsifier to the acid-thermo-induced soy protein isolate nanoparticle solution obtained in step (1), and subjecting the mixture to high-speed homogenization for 120 seconds at 12000 r / min to obtain a frozen palatability modifier;

[0038] (3) Processing animal meat into meat paste;

[0039] (4) mixing the frozen palatability modifier obtained in step (2) with the meat paste obtained in step (3), and homogenizing and emulsifying the mixture at 20° C. using an emulsifier, and then adding starch, pigment, other colloids and the remainder of water, and homogenizing and emulsifying the mixture again to obtain a pet wet food starting material;

[0040] (5) transferring the pet wet food obtained in step (4) to a filling machine for filling;

[0041] (6) After filling, the container is sealed and sterilized at 121° C. for 40 minutes to obtain a finished wet food product for cooling off pets that can be eaten frozen.

[0042] Example 2: A kind of pet wet food for relieving summer heat that can be frozen and eaten, which is composed of the following raw materials in parts by weight: 30 parts of animal meat, 3 parts of vegetable protein, 5 parts of starch, 10 parts of oil, 0.2 parts of pigment, 0.8 parts of modifier, 0.5 parts of emulsifier, 2 parts of other colloids, and the balance of water, and the total mass of all raw materials is 100 parts.

[0043] Furthermore, the animal meat is thawed cod meat and fish bones; the starch is tapioca starch; the plant protein is soy protein isolate; the oil is rapeseed oil and corn oil; the pigment is caramel pigment; the modifier is octenylsuccinate polysaccharide; the emulsifier is lecithin; the other colloids are xanthan gum, sodium alginate and konjac gum; the plant protein is soy protein isolate, specifically acid-thermotropic soy protein isolate nanoparticles.

[0044] The method for preparing the summer-heat-relieving pet wet food that can be frozen and eaten comprises the following steps:

[0045] (1) preparing acid-thermotropic soy protein isolate nanoparticles, wherein the acid-thermotropic soy protein isolate nanoparticles are prepared by: using soy protein isolate commonly used in the field of pet food, placing it in water so that the mass concentration of the protein is 9%, stirring it thoroughly, standing it at 3° C. for 12 hours, adjusting the pH to 5.9, and placing it in a static heating treatment at 97° C. for 40 minutes, and cooling it to room temperature to obtain an acid-thermotropic soy protein isolate nanoparticle solution;

[0046] (2) adding oil, modifier and emulsifier to the acid-thermo-induced soy protein isolate nanoparticle solution obtained in step (1), and subjecting the mixture to high-speed homogenization for 180 seconds at 15,000 r / min to obtain a frozen palatability modifier;

[0047] (3) processing the animal meat into meat paste, and processing the fish bones therein into fish bone paste;

[0048] (4) mixing the frozen palatability modifier obtained in step (2) with the meat paste obtained in step (3), and homogenizing and emulsifying the mixture at 25° C. using an emulsifier, and then adding starch, pigment, other colloids and the remainder of water, and homogenizing and emulsifying the mixture again to obtain a pet wet food starting material;

[0049] (5) transferring the pet wet food obtained in step (4) to a filling machine for filling;

[0050] (6) After filling, the container is sealed and sterilized at 130°C for 50 minutes to obtain a finished wet food product for cooling off pets that can be eaten frozen.

[0051] Example 3: A kind of pet wet food for relieving summer heat that can be frozen and eaten, which is composed of the following raw materials in parts by weight: 10 parts of animal meat, 1 part of vegetable protein, 0.5 parts of starch, 4 parts of oil, 0.3 parts of modifier, 0.2 parts of emulsifier, and the balance of water, and the total mass of all raw materials is 100 parts.

[0052] Furthermore, the animal meat is 80% duck breast and 20% duck bones; the starch is wheat starch; the plant protein is soy protein isolate; the oil is corn oil; the modifier is octenyl succinate polysaccharide; the emulsifier is lecithin; the plant protein is soy protein isolate, specifically acid-thermotropic soy protein isolate nanoparticles.

[0053] The method for preparing the summer-heat-relieving pet wet food that can be frozen and eaten comprises the following steps:

[0054] (1) preparing acid-thermotropic soy protein isolate nanoparticles, wherein the acid-thermotropic soy protein isolate nanoparticles are prepared by: using soy protein isolate commonly used in the field of pet food, placing it in water so that the mass concentration of the protein is 5%, stirring it thoroughly, standing it at 2° C. for 6 hours, adjusting the pH to 5, and placing it in a static heating treatment at 90° C. for 20 minutes, and cooling it to room temperature to obtain an acid-thermotropic soy protein isolate nanoparticle solution;

[0055] (2) adding oil, modifier and emulsifier to the acid-thermo-induced soy protein isolate nanoparticle solution obtained in step (1), and subjecting the mixture to high-speed homogenization at 11000 r / min for 90 s to obtain a frozen palatability modifier;

[0056] (3) processing the animal meat into meat paste, wherein the duck bones are processed into duck bone paste;

[0057] (4) mixing the frozen palatability modifier obtained in step (2) with the meat paste obtained in step (3), and homogenizing and emulsifying the mixture at a temperature not higher than 30° C. using an emulsifier, and then adding starch and the remaining amount of water, and homogenizing and emulsifying the mixture again to obtain a pet wet food starting material;

[0058] (5) transferring the pet wet food obtained in step (4) to a filling machine for filling;

[0059] (6) After the filling is completed, the container is sealed and sterilized at 110° C. for 30 minutes to obtain a finished wet food product for cooling off pets that can be eaten frozen.

[0060] Comparative Example 1: A kind of pet wet food for relieving summer heat that can be frozen and eaten is composed of the following raw materials in parts by weight: 20 parts of animal meat, 3 parts of starch, 9 parts of sucrose, 0.02 parts of pigment, 0.6 parts of modifier, 0.3 parts of emulsifier, 1 part of other colloids, and the balance is water, and the total mass of all raw materials is 100 parts.

[0061] Furthermore, the animal meat is fresh chicken breast; the starch is corn starch and potato starch; the pigment is β-carotene; the modifier is octenyl succinate polysaccharide; the emulsifier is lecithin; and the other colloids are carrageenan and guar gum.

[0062] The method for preparing the summer-heat-relieving pet wet food that can be frozen and eaten comprises the following steps:

[0063] (1) Processing animal meat into meat paste;

[0064] (2) mixing sucrose with the meat paste obtained in step (1) and homogenizing and emulsifying the mixture at 20° C. using an emulsifier, then adding starch, pigment, modifier, emulsifier, other colloids and the remainder of water, and homogenizing and emulsifying the mixture again to obtain a pet wet food starting material;

[0065] (3) transferring the initial wet pet food material obtained in step (2) to a filling machine for filling;

[0066] (4) After filling, the container is sealed and sterilized at 121° C. for 40 minutes to obtain a finished wet food product for cooling off pets that can be eaten frozen.

[0067] Comparative Example 2: A kind of pet wet food for relieving summer heat that can be frozen and eaten, which is composed of the following raw materials in parts by weight: 20 parts of animal meat, 3 parts of starch, 9 parts of sucrose, 0.02 parts of pigment, 1 part of other colloids, and the balance of water, and the total mass of all raw materials is 100 parts.

[0068] Furthermore, the animal meat is fresh chicken breast; the starch is corn starch and potato starch; the pigment is β-carotene; and the other colloids are carrageenan and guar gum.

[0069] The method for preparing the summer-heat-relieving pet wet food that can be frozen and eaten comprises the following steps:

[0070] (1) Processing animal meat into meat paste;

[0071] (2) mixing sucrose with the meat paste obtained in step (1) and homogenizing and emulsifying the mixture at 20° C. using an emulsifier, then adding starch, pigment, other colloids and the remainder of water, and homogenizing and emulsifying the mixture again to obtain a pet wet food starting material;

[0072] (3) transferring the initial wet pet food material obtained in step (2) to a filling machine for filling;

[0073] (4) After filling, the container is sealed and sterilized at 121° C. for 40 minutes to obtain a finished wet food product for cooling off pets that can be eaten frozen.

[0074] Comparative Example 3: A kind of pet wet food for relieving summer heat that can be frozen and eaten is composed of the following raw materials in parts by weight: 20 parts of animal meat, 3 parts of starch, 20 parts of oil, 0.02 parts of pigment, 1 part of other colloids, and the balance of water, and the total mass of all raw materials is 100 parts.

[0075] Furthermore, the animal meat is fresh chicken breast; the starch is corn starch and potato starch; the oil is sunflower oil; the pigment is β-carotene; and the other colloids are carrageenan and guar gum.

[0076] The method for preparing the summer-heat-relieving pet wet food that can be frozen and eaten comprises the following steps:

[0077] (1) Processing animal meat into meat paste;

[0078] (2) mixing the meat paste obtained in step (1) with fat and homogenizing and emulsifying it at 20° C. using an emulsifier, then adding starch, pigment, other colloids and the remainder of water, and homogenizing and emulsifying it again to obtain a pet wet food starting material;

[0079] (3) transferring the initial wet pet food material obtained in step (2) to a filling machine for filling;

[0080] (4) After filling, the container is sealed and sterilized at 121° C. for 40 minutes to obtain a finished wet food product for cooling off pets that can be eaten frozen.

[0081] Comparative Example 4: A kind of pet wet food for relieving summer heat that can be frozen and eaten is composed of the following raw materials in parts by weight: 20 parts of animal meat, 2 parts of vegetable protein, 3 parts of starch, 0.02 parts of pigment, 0.6 parts of modifier, 0.3 parts of emulsifier, 1 part of other colloids, and the balance is water, and the total mass of all raw materials is 100 parts.

[0082] Furthermore, the animal meat is fresh chicken breast; the starch is corn starch and potato starch; the plant protein is soy protein isolate; the pigment is β-carotene; the modifier is octenylsuccinate polysaccharide; the emulsifier is lecithin; the other colloids are carrageenan and guar gum; and the plant protein is soy protein isolate, specifically acid-thermotropic soy protein isolate nanoparticles.

[0083] The method for preparing the summer-heat-relieving pet wet food that can be frozen and eaten comprises the following steps:

[0084] (1) preparing acid-thermo-induced soy protein isolate nanoparticles, wherein the preparation method of the acid-thermo-induced soy protein isolate nanoparticles is as follows: taking soy protein isolate and placing it in raw material water so that the mass concentration of the protein is 7%, stirring it fully and then standing it at 4° C. for 15 hours, adjusting the pH to 5.5, and placing it in a static heating environment at 95° C. for 30 minutes, and cooling it to room temperature to obtain an acid-thermo-induced soy protein isolate nanoparticle solution;

[0085] (2) adding a modifier and an emulsifier to the acid-thermotropic soy protein isolate nanoparticle solution obtained in step (1), and subjecting the mixture to a high-speed homogenization treatment at 12000 r / min for 120 s to obtain a frozen palatability modifier;

[0086] (3) Processing animal meat into meat paste;

[0087] (4) mixing the frozen palatability modifier obtained in step (2) with the meat paste obtained in step (3), and homogenizing and emulsifying the mixture at 20° C. using an emulsifier, and then adding starch, pigment, other colloids and the remainder of water, and homogenizing and emulsifying the mixture again to obtain a pet wet food starting material;

[0088] (5) transferring the pet wet food obtained in step (4) to a filling machine for filling;

[0089] (6) After filling, the container is sealed and sterilized at 121° C. for 40 minutes to obtain a finished wet food product for cooling off pets that can be eaten frozen.

[0090] Comparative Example 5: A kind of pet wet food for relieving summer heat that can be eaten frozen, whose raw material composition and preparation method are the same as those of Example 1, the only difference is that peanut oil is used in this example.

[0091] Comparative Example 6: A kind of pet wet food for relieving summer heat that can be eaten frozen, the raw material composition and preparation method thereof are the same as those of Example 1, the only difference being that lard is used in this example.

[0092] Comparative Example 7: A kind of pet wet food for relieving summer heat that can be frozen and eaten, which is composed of the following raw materials in parts by weight: 20 parts of animal meat, 3 parts of starch, 7 parts of oil, 0.02 parts of pigment, 0.6 parts of modifier, 0.3 parts of emulsifier, 1 part of other colloids, and the balance of water, and the total mass of all raw materials is 100 parts.

[0093] Furthermore, the animal meat is fresh chicken breast; the starch is corn starch and potato starch; the oil is sunflower oil; the pigment is β-carotene; the modifier is octenylsuccinate polysaccharide; the emulsifier is lecithin; and the other colloids are carrageenan and guar gum.

[0094] The method for preparing the summer-heat-relieving pet wet food that can be frozen and eaten comprises the following steps:

[0095] (1) mixing fat, a modifier, an emulsifier and 2 / 3 of water, and subjecting the mixture to high-speed homogenization for 120 seconds at 12000 r / min to obtain a frozen palatability modifier;

[0096] (2) Processing animal meat into meat paste;

[0097] (3) mixing the frozen palatability modifier obtained in step (1) with the meat paste obtained in step (2) and homogenizing and emulsifying them at 20° C. using an emulsifier, then adding starch, pigment, other colloids and the remainder of water, and homogenizing and emulsifying them again to obtain a pet wet food starter;

[0098] (4) transferring the initial wet pet food material obtained in step (3) to a filling machine for filling;

[0099] (5) After filling, the container is sealed and sterilized at 121° C. for 40 minutes to obtain a finished wet food product for cooling off pets that can be eaten frozen.

[0100] Comparative Example 8: A kind of pet wet food for relieving summer heat that can be frozen and eaten, which is composed of the following raw materials in parts by weight: 20 parts of animal meat, 2 parts of vegetable protein, 3 parts of starch, 7 parts of oil, 0.02 parts of pigment, 0.6 parts of modifier, 0.3 parts of emulsifier, 1 part of other colloids, and the balance of water, and the total mass of all raw materials is 100 parts.

[0101] Furthermore, the animal meat is fresh chicken breast; the starch is corn starch and potato starch; the plant protein is soy protein isolate; the oil is sunflower oil; the pigment is β-carotene; the modifier is octenylsuccinate polysaccharide; the emulsifier is lecithin; and the other colloids are carrageenan and guar gum.

[0102] The method for preparing the summer-heat-relieving pet wet food that can be frozen and eaten comprises the following steps:

[0103] (1) The soy protein isolate nanoparticles treatment method is as follows: soy protein isolate is placed in raw water to make the protein concentration 7%, fully stirred and then allowed to stand at 4° C. for 15 hours to obtain a soy protein isolate mixed solution;

[0104] (2) adding oil, modifier and emulsifier to the soy protein isolate mixed solution obtained in step (1), and subjecting the mixture to high-speed homogenization at 12000 r / min for 120 s to obtain a frozen palatability modifier;

[0105] (3) Processing animal meat into meat paste;

[0106] (4) mixing the frozen palatability modifier obtained in step (2) with the meat paste obtained in step (3), and homogenizing and emulsifying the mixture at 20° C. using an emulsifier, and then adding starch, pigment, other colloids and the remainder of water, and homogenizing and emulsifying the mixture again to obtain a pet wet food starting material;

[0107] (5) transferring the pet wet food obtained in step (4) to a filling machine for filling;

[0108] (6) After filling, the container is sealed and sterilized at 121° C. for 40 minutes to obtain a finished wet food product for cooling off pets that can be eaten frozen.

[0109] Comparative Example 9: A kind of pet wet food for relieving summer heat that can be frozen and eaten, which is composed of the following raw materials in parts by weight: 20 parts of animal meat, 2 parts of vegetable protein, 3 parts of starch, 7 parts of oil, 0.02 parts of pigment, 0.6 parts of modifier, 0.3 parts of emulsifier, 1 part of other colloids, and the balance is water, and the total mass of all raw materials is 100 parts.

[0110] Furthermore, the animal meat is fresh chicken breast; the starch is corn starch and potato starch; the plant protein is soy protein isolate; the oil is sunflower oil; the pigment is β-carotene; the modifier is octenylsuccinate polysaccharide; the emulsifier is lecithin; the other colloids are carrageenan and guar gum; and the plant protein is soy protein isolate, specifically thermotropic soy protein isolate nanoparticles.

[0111] The method for preparing the summer-heat-relieving pet wet food that can be frozen and eaten comprises the following steps:

[0112] (1) preparing thermotropic soy protein isolate nanoparticles, wherein the preparation method of the thermotropic soy protein isolate nanoparticles is as follows: taking soy protein isolate and placing it in raw material water so that the mass concentration of the protein is 7%, stirring it thoroughly and then standing it at 4° C. for 15 hours, adjusting the pH to 7, and placing it in a static heating environment at 95° C. for 30 minutes, and cooling it to room temperature to obtain a thermotropic soy protein isolate nanoparticle solution;

[0113] (2) adding oil, modifier and emulsifier to the thermal soy protein isolate nanoparticle solution obtained in step (1), and subjecting the mixture to high-speed homogenization for 120 seconds at 12000 r / min to obtain a frozen palatability modifier;

[0114] (3) Processing animal meat into meat paste;

[0115] (4) mixing the frozen palatability modifier obtained in step (2) with the meat paste obtained in step (3), and homogenizing and emulsifying the mixture at 20° C. using an emulsifier, and then adding starch, pigment, other colloids and the remainder of water, and homogenizing and emulsifying the mixture again to obtain a pet wet food starting material;

[0116] (5) transferring the pet wet food obtained in step (4) to a filling machine for filling;

[0117] (6) After filling, the container is sealed and sterilized at 121° C. for 40 minutes to obtain a finished wet food product for cooling off pets that can be eaten frozen.

[0118] Comparative Example 10: A kind of pet wet food for relieving summer heat that can be frozen and eaten, which is composed of the following raw materials in parts by weight: 20 parts of animal meat, 2 parts of vegetable protein, 3 parts of starch, 7 parts of oil, 0.02 parts of pigment, 0.6 parts of modifier, 0.3 parts of emulsifier, 1 part of other colloids, and the balance is water, and the total mass of all raw materials is 100 parts.

[0119] Furthermore, the animal meat is fresh chicken breast; the starch is corn starch and potato starch; the plant protein is soy protein isolate; the oil is sunflower oil; the pigment is β-carotene; the modifier is octenylsuccinate polysaccharide; the emulsifier is lecithin; the other colloids are carrageenan and guar gum; and the plant protein is soy protein isolate, specifically acid-induced soy protein isolate nanoparticles.

[0120] The method for preparing the summer-heat-relieving pet wet food that can be frozen and eaten comprises the following steps:

[0121] (1) preparing acid-induced soy protein isolate nanoparticles, wherein the preparation method of the acid-induced soy protein isolate nanoparticles is as follows: taking soy protein isolate and placing it in raw material water so that the mass concentration of the protein is 7%, stirring it thoroughly and then standing it at 4° C. for 15 hours, adjusting the pH to 5.5, and standing it for 30 minutes to obtain an acid-induced soy protein isolate nanoparticle solution;

[0122] (2) adding oil, modifier and emulsifier to the acid-induced soy protein isolate nanoparticle solution obtained in step (1), and subjecting the mixture to high-speed homogenization for 120 seconds at 12000 r / min to obtain a frozen palatability modifier;

[0123] (3) Processing animal meat into meat paste;

[0124] (4) mixing the frozen palatability modifier obtained in step (2) with the meat paste obtained in step (3), and homogenizing and emulsifying the mixture at 20° C. using an emulsifier, and then adding starch, pigment, other colloids and the remainder of water, and homogenizing and emulsifying the mixture again to obtain a pet wet food starting material;

[0125] (5) transferring the pet wet food obtained in step (4) to a filling machine for filling;

[0126] (6) After filling, the container is sealed and sterilized at 121° C. for 40 minutes to obtain a finished wet food product for cooling off pets that can be eaten frozen.

[0127] Comparative Example 11: A kind of pet wet food for relieving summer heat that can be frozen and eaten, which is composed of the following raw materials in parts by weight: 20 parts of animal meat, 2 parts of vegetable protein, 3 parts of starch, 7 parts of oil, 0.02 parts of pigment, 0.3 parts of emulsifier, 1 part of other colloids, and the balance of water, and the total mass of all raw materials is 100 parts.

[0128] Furthermore, the animal meat is fresh chicken breast; the starch is corn starch and potato starch; the plant protein is soy protein isolate; the oil is sunflower oil; the pigment is β-carotene; the emulsifier is lecithin; the other colloids are carrageenan and guar gum; the plant protein is soy protein isolate, specifically acid-thermotropic soy protein isolate nanoparticles.

[0129] The method for preparing the summer-heat-relieving pet wet food that can be frozen and eaten comprises the following steps:

[0130] (1) preparing acid-thermo-induced soy protein isolate nanoparticles, wherein the preparation method of the acid-thermo-induced soy protein isolate nanoparticles is as follows: taking soy protein isolate and placing it in raw material water so that the mass concentration of the protein is 7%, stirring it fully and then standing it at 4° C. for 15 hours, adjusting the pH to 5.5, and placing it in a static heating environment at 95° C. for 30 minutes, and cooling it to room temperature to obtain an acid-thermo-induced soy protein isolate nanoparticle solution;

[0131] (2) adding oil and emulsifier to the acid-thermo-induced soy protein isolate nanoparticle solution obtained in step (1), and subjecting the mixture to high-speed homogenization for 120 seconds at 12000 r / min to obtain a frozen palatability modifier;

[0132] (3) Processing animal meat into meat paste;

[0133] (4) mixing the frozen palatability modifier obtained in step (2) with the meat paste obtained in step (3), and homogenizing and emulsifying the mixture at 20° C. using an emulsifier, and then adding starch, pigment, other colloids and the remainder of water, and homogenizing and emulsifying the mixture again to obtain a pet wet food starting material;

[0134] (5) transferring the pet wet food obtained in step (4) to a filling machine for filling;

[0135] (6) After filling, the container is sealed and sterilized at 121° C. for 40 minutes to obtain a finished wet food product for cooling off pets that can be eaten frozen.

[0136] Comparative Example 12: A kind of pet wet food for relieving summer heat that can be frozen and eaten, which is composed of the following raw materials in parts by weight: 20 parts of animal meat, 2 parts of vegetable protein, 3 parts of starch, 7 parts of oil, 0.02 parts of pigment, 0.6 parts of modifier, 1 part of other colloids, and the balance of water, and the total mass of all raw materials is 100 parts.

[0137] Furthermore, the animal meat is fresh chicken breast; the starch is corn starch and potato starch; the plant protein is soy protein isolate; the oil is sunflower oil; the pigment is β-carotene; the modifier is octenylsuccinate polysaccharide; the other colloids are carrageenan and guar gum; the plant protein is soy protein isolate, specifically acid-thermotropic soy protein isolate nanoparticles.

[0138] The method for preparing the summer-heat-relieving pet wet food that can be frozen and eaten comprises the following steps:

[0139] (1) preparing acid-thermo-induced soy protein isolate nanoparticles, wherein the preparation method of the acid-thermo-induced soy protein isolate nanoparticles is as follows: taking soy protein isolate and placing it in raw material water so that the mass concentration of the protein is 7%, stirring it fully and then standing it at 4° C. for 15 hours, adjusting the pH to 5.5, and placing it in a static heating environment at 95° C. for 30 minutes, and cooling it to room temperature to obtain an acid-thermo-induced soy protein isolate nanoparticle solution;

[0140] (2) adding the oil and the modifier to the acid-thermotropic soy protein isolate nanoparticle solution obtained in step (1), and subjecting the mixture to high-speed homogenization for 120 seconds at 12000 r / min to obtain a frozen palatability modifier;

[0141] (3) Processing animal meat into meat paste;

[0142] (4) mixing the frozen palatability modifier obtained in step (2) with the meat paste obtained in step (3), and homogenizing and emulsifying the mixture at 20° C. using an emulsifier, and then adding starch, pigment, other colloids and the remainder of water, and homogenizing and emulsifying the mixture again to obtain a pet wet food starting material;

[0143] (5) transferring the pet wet food obtained in step (4) to a filling machine for filling;

[0144] (6) After filling, the container is sealed and sterilized at 121° C. for 40 minutes to obtain a finished wet food product for cooling off pets that can be eaten frozen.

[0145] The obtained finished product of the summer-heat-relieving pet wet food that can be frozen and eaten is a uniform emulsion, and the emulsion is subjected to a freezing texture test and a stratified water precipitation test after multiple freezing / thawing.

[0146] The finished products of the edible and refrigerated pet wet food obtained in Examples 1-3 and Comparative Examples 1-12 were subjected to a frozen texture test. The prepared pet wet food was placed in plastic cups of the same specifications and frozen in a -18°C environment for 24 hours. After being taken out, it was placed in a 4°C environment for 15 minutes before the TPA test. The parameters of the texture analyzer for all samples were the same (the probe descending speed before the test was 3 mm / s, the test speed was 2 mm / s, the probe return speed after the test was 5 mm / s, the test distance was set to 20 mm, the minimum trigger force was 0.5 N, and the probe type was P / 0.5). Each sample was tested 3 times in parallel. For example, the sample of Comparative Example 1 was placed in 3 plastic cups of the same specifications and frozen in a -18°C environment for 24 hours to obtain 3 samples to be tested. A total of 3 tests were performed. During the test, the detection probe was pressed down twice to determine the texture characteristics of the sample.

[0147]

[0148] The finished products of the summer-heat-relieving pet wet food that can be frozen and eaten obtained in Examples 1-3 and Comparative Examples 1-12 were tested for melting properties: the wet food of the Examples and Comparative Examples were placed in disposable cups of the same specifications and frozen in an environment of -18°C for 24 hours, then taken out of the disposable cups and placed on an 8-mesh sieve, a container and an electronic scale were placed under the sieve, and the time of the first dripping and the melting rate of the whole thawing were recorded in an environment of 25°C and 50% humidity. The wet food of each Example and Comparative Example was measured in parallel 3 times, as shown in the following table; a typical product was tested, and the products obtained in Example 1 and Comparative Example 7 were frozen in an environment of -18°C for 24 hours under the same conditions, as shown in the following table. Figure 1 and Figure 2 The frozen product is then placed in an environment of 25°C and 50% humidity for 30 minutes. Figure 3 and Figure 4 shown.

[0149] First drop time / min Melting rate / (% / min) Example 1 36 0.81 Example 2 32 0.85 Example 3 27 0.92 Comparative Example 1 21 1.33 Comparative Example 2 19 1.38 Comparative Example 3 39 1.25 Comparative Example 4 12 1.77 Comparative Example 5 26 1.02 Comparative Example 6 29 0.98 Comparative Example 7 22 1.52 Comparative Example 8 24 1.37 Comparative Example 9 25 1.26 Comparative Example 10 24 1.30 Comparative Example 11 26 0.99 Comparative Example 12 27 1.04

[0150] The finished products of the pet wet food for relieving summer heat that can be frozen and eaten obtained in Examples 1-3 and Comparative Examples 1-12 were subjected to stability tests after multiple freezing and thawing, and the test was conducted with the amount of precipitated moisture as an indicator. After the finished pet wet food products were subjected to multiple freezing and thawing, clear liquid would precipitate on the top layer. The height of the upper precipitated clear liquid layer (H1) and the total height of the pet wet food (H2) were measured with a ruler, and the stability coefficient was calculated as follows: H1 / H2×100%. During the specific test, the finished products of the pet wet food for relieving summer heat that can be frozen and eaten obtained in Examples 1-3 and Comparative Examples 1-12 were placed in a disposable cylindrical transparent cup body with a height of 50 mm and a diameter not exceeding 20 mm. After sealing, they were frozen in an environment of -18°C for 24 hours, and then thawed in an environment of 4°C for 12 hours. This was one freeze-thaw cycle, and the test was conducted after a total of 3 cycles. The cup body was kept sealed during the freezing, thawing and testing process to prevent external moisture from entering the cup body and affecting the accuracy of the test results. At the same time, care was taken to handle it with care to avoid stirring. The test results of the stability coefficient (%) are shown in the following table:

[0151] Loop 1 Loop 2 Loop 3 Example 1 2.3 4.5 7.8 Example 2 2.5 5.8 9.1 Example 3 2.9 5.7 10.1 Comparative Example 1 4.3 8.5 14.0 Comparative Example 2 4.7 9.3 15.2 Comparative Example 3 2.2 4.6 8.2 Comparative Example 4 6.5 12.8 25.4 Comparative Example 5 3.0 6.5 12.6 Comparative Example 6 2.9 6.6 11.4 Comparative Example 7 5.0 10.4 18.8 Comparative Example 8 3.8 8.9 14.3 Comparative Example 9 3.5 8.1 13.9 Comparative Example 10 3.3 7.6 13.8 Comparative Example 11 3.2 7.2 11.2 Comparative Example 12 3.3 6.9 11.8

[0152] The palatability test was conducted on the finished products of the pet wet food for relieving summer heat that can be frozen and eaten obtained in Examples 1-3 and Comparative Examples 1-12. Animal tests were conducted on the obtained products. The finished products of the pet wet food for relieving summer heat that can be frozen and eaten obtained in Examples 1-3 and Comparative Examples 1-12 were frozen at -18°C for 4 hours in advance when feeding, and then thawed at room temperature for 5 minutes. Single basin test, 1 box / dog / day, 1 day test period, record the dog's feeding situation, and conduct acceptability analysis. The test was conducted at the animal feeding base of Guaibao Pet Food Group Co., Ltd. During the test, 16 healthy dogs (8 breeds, including 2 cocker dogs, 3 corgis, 2 Shiba Inus, 4 giant nobles, 2 Samoyeds, 1 Husky, 1 golden retriever, and 1 German shepherd were selected (8 breeds, including 2 cocker dogs, 3 corgis, 2 Shiba Inus, 4 giant nobles, 2 Samoyeds, 1 Husky, 1 golden retriever, and 1 German shepherd; age range 0.6-2 years old, male-female ratio of 1:1, medium and large dog ratio of 14:2; during the test, the selected dogs had no vomiting or diarrhea within 24 hours and were in a healthy state), and the test results are shown in the following table.

[0153]

[0154]

[0155] * The proportion of dogs that experienced vomiting or diarrhea within 24 hours after eating is recorded only in the dogs that experienced vomiting or diarrhea within 24 hours after eating. The recorded data includes the proportion of dogs that experienced vomiting and diarrhea within 24 hours after eating. If the same dog experienced both diarrhea and vomiting, it was counted as 1 case.

Claims

1. A kind of pet wet food for relieving summer heat that can be eaten frozen, characterized in that: The invention comprises the following raw materials in parts by weight: 10-30 parts of animal meat, 1-3 parts of vegetable protein, 0.5-5 parts of starch, 4-10 parts of oil, 0-0.2 parts of pigment, 0.3-0.8 parts of modifier, 0.2-0.5 parts of emulsifier, 0-2 parts of other colloids, and the balance of water, and the total weight of all raw materials is 100 parts.

2. The refrigerated and edible summer-heat-relieving pet wet food according to claim 1, characterized in that: The animal meat is one or more of livestock and poultry meat, livestock and poultry meat by-products, fish meat, and fish meat by-products.

3. The summer-heat-relief pet wet food that can be frozen and eaten according to claim 1, characterized in that: The starch is one or more of corn starch, potato starch, tapioca starch and wheat starch.

4. The summer-heat-relieving pet wet food that can be frozen and eaten according to claim 1, characterized in that: The vegetable protein is isolated soybean protein.

5. The summer-heat-relief pet wet food that can be frozen and eaten according to claim 1, characterized in that: The oil is one or more of soybean oil, rapeseed oil, sunflower oil and corn oil.

6. The summer-heat-relieving pet wet food that can be frozen and eaten according to claim 1, characterized in that: The modifier is octenyl succinate polysaccharide.

7. The summer-heat-relief pet wet food that can be frozen and eaten according to claim 1, characterized in that: The emulsifier is lecithin.

8. The summer-heat-relief pet wet food that can be frozen and eaten according to claim 1, characterized in that: The other colloids are one or more of carrageenan, gelatin, xanthan gum, guar gum, agar, sodium alginate, konjac gum and locust bean gum.

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