CN113133506A

CN113133506A - Freeze-dried pet tooth-cleaning food and preparation method thereof

Info

Publication number: CN113133506A
Application number: CN202110616659.XA
Authority: CN
Inventors: 刘凤岐
Original assignee: Tianjin Ranova Pet Food Co ltd
Current assignee: Tianjin Ranova Pet Food Co ltd
Priority date: 2021-06-02
Filing date: 2021-06-02
Publication date: 2021-07-20

Abstract

The invention provides a freeze-dried tooth-cleaning pet food and a preparation method thereof, wherein the freeze-dried tooth-cleaning pet food comprises at least two chewing layers, each chewing layer is provided with tooth holes, the tooth holes on two adjacent chewing layers are arranged in a staggered manner, and the two adjacent chewing layers are bonded and connected through an adhesive layer; the total thickness of the freeze-dried tooth cleaning food for pets is 10mm-15 mm. The freeze-dried tooth cleaning food for pets is natural and pollution-free, and is prepared by combining a plurality of chewing layers, each chewing layer is provided with the tooth holes, and the tooth holes of the adjacent chewing layers are arranged in a staggered manner, so that the design is convenient for the pets to rub the teeth no matter which part is chewed, thereby achieving the purpose of cleaning the teeth; in addition, the total thickness is set to be 10-15mm, so that the normal biting of the pet can be ensured, and the pet can eat conveniently.

Description

Freeze-dried pet tooth-cleaning food and preparation method thereof

Technical Field

The invention belongs to the technical field of pet snack preparation, and particularly relates to a freeze-dried pet tooth-cleaning food and a preparation method thereof.

Background

With the gradual improvement of living standard, more and more people raise pets. In the process of raising pets, pet food is indispensable. However, bacteria and salivary glycoprotein in the pet oral cavity are deposited on the tooth surface to form a film, thereby providing a hotbed for the attachment and deposition of bacteria, further forming bacterial plaque, and food residues exist for a long time to be mineralized and deposited, and if the food residues are not cleaned in time, the mineralized core is enlarged to form dental calculus, thereby causing dental and oral diseases.

Pet products have been developed as dental bruxism aids in massaging the teeth, strengthening and cleaning the gums and removing oral malodor of pets, and for preventing or treating dental calculus, plaque, gingivitis and periodontal disease of pets, and for enhancing the antioxidant capacity of the whole organism. At present, there are many kinds of chew products, but there are problems like this, some are inedible, some are not biodegradable, easily cause pollution to the environment, some do not have the function of cleaning and caring the pet oral cavity, still many chews contain chemical components harmful to animals, and taste and nutrition are poor, so, with the deepening of people's understanding of environmental protection, natural, nuisanceless food, people are increasingly demanding pet chews that are environment-friendly, edible, chewable, and have good palatability, balanced nutrition and good health care function.

Disclosure of Invention

The invention provides a freeze-dried pet tooth-cleaning food which is natural and pollution-free and is prepared by combining a plurality of chewing layers, wherein each chewing layer is provided with tooth holes, and the tooth holes of the adjacent chewing layers are arranged in a staggered manner, so that when a pet chews, the pet can rub teeth by corresponding tooth holes no matter where the pet chews, and the aim of cleaning teeth is achieved; in addition, the total thickness is set to be 10-15mm, so that the normal biting of the pet can be ensured, and the pet can eat conveniently.

In order to achieve the purpose, the invention adopts the technical scheme that: a freeze-dried tooth-cleaning food for pets comprises at least two chewing layers, wherein each chewing layer is provided with tooth holes, the tooth holes on two adjacent chewing layers are arranged in a staggered manner, and the two adjacent chewing layers are bonded through an adhesive layer; the total thickness of the freeze-dried tooth cleaning food for pets is 10mm-15 mm.

Further, the chewing layer is made of cow leather, and the bonding layer is short fiber meat pulp.

Further, the tooth holes are circular holes or regular polygonal holes; the diameter of the inscribed circle of the tooth holes on each layer of the chewing layer is equal and is 2-3 mm.

Further, beef juice is soaked in the freeze-dried pet tooth cleaning food, and a tooth cleaning mixed liquid is also permeated in the freeze-dried pet tooth cleaning food.

The second purpose of the invention is to provide a preparation method of the freeze-dried pet tooth-cleaning food, which can improve the flexibility of cow leather by rolling and kneading the cow leather in vacuum, so that the cow leather has better mouthfeel, and simultaneously, the tooth-cleaning mixed liquid permeates into the cow leather, so that the tooth-cleaning mixed liquid and cow leather particles are rolled and kneaded into a whole; finally, freeze-drying is carried out, so that the components of the cow leather can be kept unchanged; the tooth cleaning food for the pet prepared by the preparation method has good mouthfeel, and the finally prepared food contains multiple layers, and each layer has different tooth holes so as to facilitate the friction and scouring of the teeth when the pet gnaws, thereby strengthening the tooth cleaning effect in the gnawing process.

In order to achieve the purpose, the invention adopts the technical scheme that: a preparation method of a freeze-dried pet tooth-cleaning food comprises the following steps:

a, soaking and cleaning: soaking cowhide in clear water at room temperature, and cleaning;

b, water filtration: filtering water of the cleaned cowhide;

c, processing and shaping: drilling cowhide to form a plurality of tooth holes, wherein the shape and density of each tooth hole of the frozen body are randomly controlled;

e, bonding: selecting a plurality of layers of cowhide to carry out superposition, enabling the tooth holes of two adjacent layers of cowhide to be arranged in a staggered way, and coating a layer of chicken pulp or duck pulp on the cowhide which is superposed and contacted to promote the cowhide to be bonded;

f, cutting and shaping: placing the bonded multi-layer cowhide into a freezer, freezing to freeze, and cutting into particles to obtain cowhide particles;

g, vacuum tumbling: rolling and kneading the cowhide particles and the tooth cleaning mixed liquid by using a vacuum rolling and kneading machine, and enabling the tooth cleaning mixed liquid to penetrate into the cowhide particles, thereby obtaining the cowhide particles with the tooth cleaning mixed liquid;

h, quick freezing: putting the cowhide granules with the tooth cleaning mixed liquid into a quick freezing warehouse for quick freezing at the temperature of minus 40 ℃ for 1 h;

i, vacuum freeze drying: putting the quick-frozen cowhide granules into a vacuum freeze-drying tank for drying, setting the pressure in a bin to be 200Pa, setting the temperature of a catcher to be-25 to-30 ℃, and controlling the temperature to gradually rise in the drying process;

j cooling: cooling the freeze-dried product to room temperature;

k, inspection and packaging: and (5) inspecting the cooled product, and quantitatively packaging after the product is qualified.

And furthermore, step d of soaking meat juice is also included between the step c of cutting and shaping and the step e of bonding, specifically, the cowhide and the beef juice are soaked for 5-8 hours, and then the cowhide is fished out and the juice is drained.

Further, the beef juice in the step d is meat pulp made of raw beef.

Further, in the step i, during the vacuum freeze drying process, the heating temperature is controlled to rise to 50-60 ℃ within 1-3 hours, then the heating temperature is kept at 55-60 ℃ within 6-10 hours, and then the heating temperature is controlled to rise to 65-70 ℃ within 4-8 hours; the total time of freeze-drying is 19-20 h.

Further, in the step e, the thickness of the bonded cowhide slices is kept between 10mm and 15mm in the bonding process.

Further, in the f granulation and shaping process, the frozen multilayer cow leather sheet is cut into squares with the width of 1cm-1.5 cm.

The invention has the advantages and positive effects that:

1. the freeze-dried tooth cleaning food for pets is pure natural and pollution-free, is prepared by bonding two or more chewing layers, and is provided with a plurality of tooth holes, when the pets are chewed and eaten, the tooth holes rub the edges of teeth so as to achieve the purpose of cleaning teeth.

2. According to the preparation method of the freeze-dried tooth-cleaning food for pets, the cow leather is cleaned and processed to form the tooth holes with the tooth-cleaning effect, and then the cow leather is soaked in the meat juice to enable the cow leather to be soaked in the fragrance of the beef, so that the fresh and fragrant taste of the beef can attract pets to eat; and then, the multilayer cowhide is bonded and then cut into particles, then the hardness of the cowhide is improved through vacuum rolling and kneading, so that the chewing taste of the cowhide is more chewy, a tooth cleaning mixed solution is permeated into the cowhide particles through the vacuum rolling and kneading, and finally the final freeze-dried pet tooth cleaning food is obtained through quick freezing and freeze drying. The pet tooth-cleaning food prepared by the preparation method has good taste and fresh and fragrant beef, wherein the cowhide can play a role of tooth grinding, the tooth holes are matched with the tooth-cleaning mixed liquid to grind and clean the oral cavity of the pet, a good tooth-cleaning effect is achieved, and the fragrance of the beef is loved by the pet and can be independently eaten and chewed.

3. In addition, the tooth cleaning food for the pet, which is produced by the preparation method of the invention, is easy to digest and absorb, and the pet can clean the teeth and the oral cavity and can condition the intestines and the stomach after eating.

Drawings

FIG. 1 is a schematic structural diagram of a freeze-dried dentifrice food of the present invention, in example 1;

FIG. 2 is a bottom view of a freeze-dried pet dentifrice food of example 1 of the present invention;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is a schematic structural diagram of a freeze-dried dentifrice food of example 2 of the present invention;

FIG. 5 is a bottom view of a freeze-dried pet dentifrice food product of example 2 of the present invention;

FIG. 6 is a cross-sectional view B-B of FIG. 5;

FIG. 7 is a schematic structural diagram of a round-shaped tooth hole chewing layer in a freeze-dried tooth-cleaning food for pets according to the invention;

FIG. 8 is a schematic structural diagram of a triangular-shaped tooth hole chewing layer in a freeze-dried pet tooth-cleaning food of the invention;

FIG. 9 is a schematic structural diagram of a regular pentagonal tooth hole chewing layer in a freeze-dried tooth cleaning food for pets according to the invention;

in the figure:

1-a chewing layer, 11-a first chewing layer, 12-a second chewing layer, 13-a third chewing layer;

2-perforation; 3-adhesive layer.

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings.

A freeze-dried pet tooth-cleaning food comprises at least two chewing layers 1, wherein each chewing layer 1 is provided with tooth holes 2, the tooth holes 2 on the two adjacent chewing layers 1 are arranged in a staggered manner, and the two adjacent chewing layers 1 are bonded through a bonding layer 3; the total thickness of the freeze-dried tooth cleaning food for pets is 10mm-15 mm. The thickness of the freeze-dried tooth-cleaning food for the pet is kept at 10mm-15mm, so that the pet can conveniently bite when gnawing, and the biting power of the pet is increased.

Wherein, the chewing layer 1 is made of cow leather, and the bonding layer 3 is made of short fiber meat pulp such as chicken pulp or duck pulp. The short fiber meat pulp has good adhesive force, and can tightly adhere the two chewing layers 1.

Wherein, the tooth holes 2 are circular holes or regular polygonal holes; the diameter of the inscribed circle of the tooth holes 2 on each layer of chewing layer 1 is equal and is 2-3 mm. Guarantee that the inscribed circle diameter of perforation 2 equals, can guarantee that perforation 2 of upper and lower two-layer when preparing staggers the setting to make the product possess good effect of cleaning teeth.

Example 1:

as shown in fig. 1 to 3, 7 and 8, the freeze-dried tooth-cleaning food for pets comprises two chewing layers 1, namely a first chewing layer 11 and a second chewing layer 12, wherein the first chewing layer 11 is provided with a plurality of circular tooth holes 2, the second chewing layer 12 is provided with a plurality of triangular tooth holes 2, the first chewing layer 11 and the second chewing layer 12 are bonded through an adhesive layer 3, and the upper and lower tooth holes 2 are arranged in a staggered manner. In this embodiment, set up two-layer 1 and the crisscross setting of two-layer perforation 2 of chewing, the pet of being convenient for is chewed 2 covers of in-process perforation and is established on the tooth to chew the in-process and play the purpose of upper and lower friction and cleaning teeth. In this embodiment, the adhesive layer 3 is chicken meat slurry.

Wherein, the thickness of the first chewing layer 11 and the second chewing layer 12 is 5 mm; the diameter of the inscribed circle of the perforation 2 is 3 mm. The first chewing layer 11 and the second chewing layer 12 are both set to be 5mm, the whole thickness is kept at 10mm, the convenience for biting of a pet can be guaranteed, and the pet chewing machine is suitable for being eaten by small pets, particularly pet cats or small pet dogs and the like. In this example, the freeze-dried pet dentifrice food is soaked with beef juice and also permeated with a dentifrice mixture. The soaked beef juice can increase the meat flavor of food, and the tooth cleaning mixed liquid is matched with the tooth holes, so that the tooth cleaning capability of the food can be enhanced, and a good effect is achieved. The mixed liquid for cleaning teeth in this example is a solution prepared from a commercially available common tooth cleaning powder.

The freeze-dried pet tooth-cleaning food of the embodiment is prepared by the following method:

b, water filtration: filtering water of the cleaned cowhide;

c, processing and shaping: drilling cowhide to form a plurality of tooth holes 2, wherein the shape and density of the tooth holes 2 on each layer of cowhide are randomly controlled;

d, meat juice soaking: soaking cowhide in the beef juice for 5 hr, taking out the cowhide, and draining;

e, bonding: two layers of cowhide are selected for superposition, the tooth holes 2 of the two adjacent layers of cowhide are arranged in a staggered way, and a layer of chicken pulp is coated on the cowhide which is superposed and contacted with the cowhide to promote the cowhide to be bonded;

f, cutting and shaping: placing the bonded multi-layer cowhide into a freezer, freezing to freeze, and cutting into particles to obtain cowhide particles which are small squares with the width of 1 cm;

g, vacuum tumbling: adding the cowhide particles and the tooth cleaning mixed liquid into a vacuum rolling and kneading machine, and rolling and kneading by using the vacuum rolling and kneading machine, so that the tooth cleaning mixed liquid permeates into the cowhide particles, and thus the cowhide particles with the tooth cleaning mixed liquid are obtained;

i, vacuum freeze drying: putting the quick-frozen cowhide granules into a vacuum freeze-drying tank for drying, setting the pressure in a bin to be 200Pa, setting the temperature of a catcher to be-25 ℃, and controlling the temperature to gradually rise in the drying process; wherein the heating temperature is controlled to rise to 60 ℃ within 1 hour, the temperature is kept for 9 hours, then the temperature rises to 70 ℃ within 4 hours, the temperature is kept for 5 hours, and the total freeze-drying temperature is 19 hours;

j cooling: cooling the freeze-dried product to room temperature;

Example 2:

as shown in fig. 4 to 6 and 7 to 9, in this embodiment, the freeze-dried tooth-cleaning pet food includes three chewing layers 1, namely a first chewing layer 11, a second chewing layer 12 and a third chewing layer 13, the first chewing layer 11 is provided with a plurality of circular tooth holes 2, the second chewing layer 12 is provided with a plurality of regular triangular tooth holes 2, the third chewing layer 13 is provided with a plurality of regular pentagonal tooth holes 2, the first chewing layer 11, the third chewing layer 13 and the second chewing layer 12 are sequentially bonded by an adhesive layer 3, and the tooth holes 2 of two adjacent layers are staggered. In this embodiment, set up the setting of layer 1 and three-layer perforation 2 crisscross each other are chewed to the three-layer, and the pet of being convenient for is chewed 2 covers of in-process perforation and is established on the tooth to chew the in-process and play the purpose of upper and lower friction and cleaning teeth. The three-layer chewing layer 1 can further increase the probability of the friction between the tooth holes and the teeth, and improve the tooth cleaning effect. In this embodiment, the adhesive layer 3 is duck meat paste.

In this embodiment, the thickness of the first, second and third

masticatory layers

11, 12, 13 is 4 mm; the diameter of the inscribed circle of the perforation 2 is 2 mm. The first chewing layer 11, the second chewing layer 12 and the third chewing layer 13 are all set to be 4mm, the whole thickness is kept at 12mm, the convenience for biting of a pet can be guaranteed, and the pet chewing machine is suitable for being eaten by small pets, particularly pet cats or small pet dogs and the like.

In this example, the freeze-dried pet dentifrice food was soaked with beef extract and permeated with the dentifrice mix by vacuum tumbling. Soak the meat flavor that has the beef juice can increase food to attract the pet to gnaw and sting, the infiltration has the mixed liquid that cleans the teeth, and it uses with the perforation cooperation, can strengthen the ability that cleans the teeth of food, plays good effect. The mixed liquid for cleaning teeth in this embodiment is prepared into a solution using a common tooth cleaning powder on the market.

The preparation method of the freeze-dried pet dentifrice of the present example is as follows:

b, water filtration: filtering water of the cleaned cowhide;

d, meat juice soaking: soaking cowhide in the beef juice for 8 hr, taking out the cowhide, and draining;

e, bonding: three layers of cowhides are selected for superposition, wherein the tooth holes 2 in one layer are circular, the tooth holes 2 in the other layer are triangular, and the tooth holes 2 in the third layer are regular pentagons; during lamination, the tooth holes 2 of two adjacent layers of cowhide are arranged in a staggered way, and a layer of duck meat pulp is coated on the cowhide which is in contact with the lamination so as to promote the cowhide to be bonded;

f, cutting and shaping: placing the bonded multi-layer cowhide into a freezer, freezing to freeze, and cutting into particles to obtain cowhide particles which are small squares with the width of 1.5 cm;

g, vacuum tumbling: adding the cowhide particles and the tooth cleaning mixed liquid into a vacuum rolling and kneading machine, rolling and kneading by using the vacuum rolling and kneading machine, and penetrating the tooth cleaning mixed liquid into the cowhide particles to obtain the cowhide particles with the tooth cleaning mixed liquid;

i, vacuum freeze drying: putting the quick-frozen cowhide granules into a vacuum freeze-drying tank for drying, setting the pressure in a bin to be 200Pa, setting the temperature of a catcher to be-28 ℃, and controlling the temperature to gradually rise in the drying process; wherein the heating temperature is controlled to rise to 55 ℃ within 3 hours, the temperature is kept for 7 hours, and then the heating temperature rises to 68 ℃ within 8 hours, the temperature is kept for 2 hours; the total freeze-drying time is 20 h;

j cooling: cooling the freeze-dried product to room temperature;

Example 3:

as shown in fig. 4 to 6 and 7 to 9, in this embodiment, the freeze-dried tooth-cleaning pet food includes three chewing layers 1, namely a first chewing layer 11, a second chewing layer 12 and a third chewing layer 13, the first chewing layer 11 is provided with a plurality of circular tooth holes 2, the second chewing layer 12 is provided with a plurality of regular triangular tooth holes 2, the third chewing layer 13 is provided with a plurality of regular pentagonal tooth holes 2, the first chewing layer 11, the third chewing layer 13 and the second chewing layer 12 are sequentially bonded by an adhesive layer 3, and the tooth holes 2 of two adjacent layers are staggered. In this embodiment, set up the setting of layer 1 and three-layer perforation 2 crisscross each other are chewed to the three-layer, and the pet of being convenient for is chewed 2 covers of in-process perforation and is established on the tooth to chew the in-process and play the purpose of upper and lower friction and cleaning teeth. The three-layer chewing layer 1 can further increase the probability of the friction between the tooth holes and the teeth, and improve the tooth cleaning effect. Wherein the bonding layer 3 is chicken pulp.

In the present embodiment, the thickness of the first, second and third

masticatory layers

11, 12, 13 is 5 mm; the diameter of the inscribed circle of the perforation 2 is 3 mm. The first chewing layer 11, the second chewing layer 12 and the third chewing layer 13 are all set to be 5mm, the whole thickness is kept at 15mm, the convenience for biting of a pet can be guaranteed, and the pet chewing machine is suitable for being eaten by small pets, particularly pet cats or small pet dogs and the like.

In this example, the freeze-dried pet dentifrice food was soaked with beef extract and impregnated with a dentifrice mixture by vacuum tumbling. The meat flavor that has soaked the beef juice and can increase food to attract the pet to gnaw and sting, the mixed liquid that cleans the teeth in the tooth hole cooperation is used, can strengthen the ability of cleaning the teeth of food, plays good effect. The mixed liquid for cleaning teeth in this embodiment is prepared into a solution using a common tooth cleaning powder on the market.

b, water filtration: filtering water of the cleaned cowhide;

d, meat juice soaking: soaking cowhide in the beef juice for 8 hr, taking out the cowhide, and draining; the beef can be soaked to enable the fragrance and meat flavor of the beef to enter the cowhide, so that the beef has good meat flavor, and a pet can be attracted to eat the beef;

e, bonding: three layers of cowhides are selected for superposition, wherein the tooth holes 2 in one layer are circular, the tooth holes 2 in the other layer are triangular, and the tooth holes 2 in the third layer are regular pentagons; during lamination, the tooth holes 2 of two adjacent cowhide slices are arranged in a staggered way, and a layer of duck meat pulp is coated on the cowhide which is in contact with the lamination so as to promote the cowhide slices to be bonded;

h, quick freezing: putting the cowhide granules with the tooth cleaning mixed liquid into a quick freezing warehouse for quick freezing at the temperature of minus 40 ℃ for 1 h; the rapid freezing freezes the moisture in the cow leather particles, and the preparation is made for the next step of vacuum freeze drying, so that liquid water is prevented from appearing in the freeze drying process, and the subsequent freeze drying effect is improved;

i, vacuum freeze drying: putting the quick-frozen cowhide granules into a vacuum freeze-drying tank for drying, setting the pressure in a bin to be 200Pa, setting the temperature of a catcher to be-25 ℃, and controlling the temperature to gradually rise in the drying process; wherein the heating temperature is controlled to rise to 50 ℃ within 2 hours, the temperature is kept for 8 hours, and then the heating temperature rises to 65 ℃ within 6 hours, the temperature is kept for 4 hours; the total freeze-drying time is 20 h;

j cooling: cooling the freeze-dried product to room temperature;

Comparative example 1:

the structure and preparation method of the pet tooth cleaning food of the comparative example are the same as those of the example 1, except that the tooth cleaning powder is not added in the pet tooth cleaning food of the comparative example.

Comparative example 2:

the structure and preparation method of the pet tooth cleaning food of the comparative example are the same as those of the example 1, except that the pet tooth cleaning food of the comparative example is not provided with the tooth holes 2.

Comparative example 3:

the structure and preparation method of the pet tooth cleaning food of the comparative example are the same as those of the example 1, except that the pet tooth cleaning food of the comparative example is not soaked in the meat juice in the step d in the preparation process, and other steps are the same as those of the example 2.

Comparative example 4:

the pet tooth-cleaning food of the comparative example is prepared by the preparation method in the invention application document with the application number of 2017111756247, namely the pet food with the tooth-cleaning function and the preparation method.

Comparative example 5:

the pet teeth-cleaning food of the comparative example is a commercially available pet teeth-cleaning stick bone.

Comparative example 6:

the pet dentifrice of this comparative example was a commercial dentifrice.

Test example 1:

the experimental example is used for testing the liking degree of the pet tooth-cleaning food, and the experimental method specifically comprises the following steps:

the pet tooth cleaning foods of example 1, comparative example 1 and comparative example 5 of the present invention were placed in different pet food basins in the same amount, 30g of the tooth cleaning powder of comparative example 6 was placed in another pet food basin, 7 pet food basins containing the pet tooth cleaning foods were placed in front of 3 pet cats, the holding time was 12h, the eating rate of the pet tooth cleaning foods in the 7 pet basins was observed, and the use results are shown in table 1:

TABLE 1 Pet food rates for the examples and comparative examples

Item

Example 1

Comparative example 1

Comparative example 2

Comparative example 3

Comparative example 4

Comparative example 5

Comparative example 6

Adding amount of

20g

Amount of food consumed

20g

10g

12g

13.4g

5.2g

Rate of consumption

100％

50％

60％

66.7％

26％

As can be seen from the test data in Table 1, the pet tooth cleaning food in example 1 and comparative examples 1 and 2 is completely eaten up, and the eating rate is 100%, compared with comparative examples 4, 5 and 6, the pet tooth cleaning food prepared by the preparation method of the invention is more popular with pets than the tooth cleaning stick bone and tooth cleaning powder in the market;

the pet dentifrice of comparative example 3 was consumed only 50% and comparative example 1 was compared to example 1 with no immersion of beef extract, which indicates that immersion of beef extract during the preparation process increased the flavor of the final product and was more attractive to the pet to eat actively.

Test example 2:

this experimental example was used to test the ease of digestion of the pet dentifrice of the present invention, and the dry matter digestibility of the pet dentifrice of examples 1 to 3 and comparative examples 1 to 6, respectively, was determined by simulating in vitro digestion of a pet, and was determined as follows:

the water bath oscillator represents a pet, a certain temperature and moderate movement are kept, the triangular flask represents the stomach and the intestine of the pet, simulated gastric juice and intestinal juice are contained, a sample to be digested is placed in the triangular flask, the triangular flask is placed in the water bath oscillator, the gastric juice is kept to be digested for 6 hours, then the intestine is digested for 18 hours, then the weight of residues is weighed, the weight ratio of the digested food is calculated, and the dry matter digestibility is represented. The dry matter efficiency test results are shown in table 2.

TABLE 2 Dry matter digestibility of different pet foods

Numbering	Dry matter digestibility
		Example 1	99.45％
Example 2	99.59％
		Example 3	99.24％
Comparative example 1	99.25％
		Comparative example 2	99.04％
Comparative example 3	99.14％
		Comparative example 4	80.24％
Comparative example 5	90.69％
		Comparative example 6	100％

As can be seen from the experimental data in Table 2, the dry matter digestibility of the products in examples 1 to 3 and in comparative examples 1 to 3 is more than 99%, so that the dentifrice for pets of the present invention is easy to digest and suitable for pets to eat; the vacuum kneading in the preparation method can change the characteristics of the cowhide, so that the cowhide is convenient to digest and eat.

The freeze-dried pet tooth-cleaning food prepared by the invention is easy to digest, has good taste and chewy property, is deeply loved by pets, is made of cow leather and is provided with a plurality of layers of staggered tooth holes, and is used for cleaning the teeth of the pets when the pets are chewed, thereby achieving good tooth-cleaning effect; the mixed liquid that cleans the teeth is permeated in the cowhide particle, so that the mixed liquid that cleans the teeth is contacted in the chewing process of the pet, the effect that the pet cleans the teeth can be further enhanced, and the oral cavity of the pet is kept clean.

While specific embodiments of the present invention have been described in detail, the description is merely illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.

Claims

1. A freeze-dried tooth-cleaning food for pets is characterized in that: the freeze-dried tooth-cleaning pet food comprises at least two chewing layers (1), wherein each chewing layer (1) is provided with tooth holes (2), the tooth holes (2) on two adjacent chewing layers (1) are arranged in a staggered manner, and the two adjacent chewing layers (1) are bonded through a bonding layer (3); the total thickness of the freeze-dried tooth cleaning food for pets is 10mm-15 mm.

2. The freeze-dried dentifrice food for pets according to claim 1, wherein: the chewing layer (1) is made of cow leather, and the bonding layer (3) is short-fiber meat pulp.

3. The freeze-dried dentifrice for pet of claim 2, wherein: the tooth holes (2) are circular holes or regular polygonal holes; the diameter of the inscribed circle of the tooth holes (2) on each layer of the chewing layer (1) is equal and is 2-3 mm.

4. The freeze-dried dentifrice for pet of claim 3, wherein: beef juice is soaked in the freeze-dried pet tooth cleaning food, and a tooth cleaning mixed liquid is also permeated in the freeze-dried pet tooth cleaning food.

5. The preparation method of the freeze-dried tooth-cleaning food for pets is characterized by sequentially comprising the following steps of:

b, water filtration: filtering water of the cleaned cowhide;

c, processing and shaping: drilling cowhide to form a plurality of tooth holes (2), wherein the shape and density of the tooth holes (2) on each layer of cowhide are randomly controlled;

e, bonding: selecting a plurality of layers of cowhide to carry out superposition, enabling the tooth holes (2) of two adjacent layers of cowhide to be arranged in a staggered way, and coating a layer of chicken pulp or duck pulp on the cowhide which is superposed and contacted to promote the cowhide to be bonded;

j cooling: cooling the freeze-dried product to room temperature;

6. The method for preparing the freeze-dried dentifrice food for pets according to claim 5, wherein the method comprises the following steps: and d, soaking the beef juice in the step d between the cutting and shaping in the step c and the bonding in the step e, specifically soaking the beef hide in the beef juice for 5-8h, and then fishing out the beef hide and draining the juice.

7. The method for preparing the freeze-dried dentifrice food for pets according to claim 6, wherein the method comprises the following steps: and d, preparing the beef juice in the step d into meat pulp prepared from the raw beef.

8. The method for preparing the freeze-dried dentifrice food for pets according to claim 6, wherein the method comprises the following steps: in the vacuum freeze drying process of the step i, the heating temperature is controlled to rise to 50-60 ℃ within 1-3 hours, then the temperature is kept at 55-60 ℃ within 6-10 hours, and then the temperature is raised to 65-70 ℃ within 4-8 hours; the total time of freeze-drying is 19-20 h.

9. The method for preparing the freeze-dried dentifrice food for pets according to claim 6, wherein the method comprises the following steps: and in the step e, the thickness of the bonded cowhide slices is kept between 10mm and 15 mm.

10. The method for preparing the freeze-dried dentifrice food for pets according to claim 6, wherein the method comprises the following steps: and f, in the process of cutting and shaping, cutting the frozen multilayer cattle hide sheets into square blocks with the width of 1cm-1.5 cm.