Edible bean dreg cat litter

Abstract

The invention relates to the technical field of pet cat litter, in particular to edible bean dreg cat litter. In particular to edible bean dreg cat litter. The cat litter is prepared from the following raw materials in parts by weight: 600 to 650 parts of bean dregs with the water content of 10 to 12 percent, 300 to 320 parts of corn starch, 18 to 22 parts of guar gum, 8 to 12 parts of vital gluten, 30 to 35 parts of food-grade calcium carbonate, 1 to 2 parts of nisin, 1 to 2 parts of skim milk powder, 0.8 to 1.2 parts of vitamin E, 0.4 to 0.6 part of lactobacillus acidophilus, 0.4 to 0.6 part of saccharomyces cerevisiae, 0.4 to 0.6 part of bacillus amyloliquefaciens and 0.4 to 0.6 part of rhizopus. The cat litter further comprises 1-2 parts of a natural PH indicator. The cat litter aims at solving the problem that kittens or heterotriophagia cats eat the cat litter by mistake, so that intestinal diseases are caused.

Description

Technical Field

[0001] The present invention relates to the technical field of pet cat litter, and particularly to an edible soybean residue cat litter and a manufacturing method thereof. Background Art

[0002] There are various types of cat litter, generally divided into bentonite cat litter, crystal cat litter, silica gel cat litter, wood chip cat litter, paper shred cat litter, soybean residue cat litter, etc. Among them, soybean residue cat litter is a new variety of cat litter in recent years, which is highly favored in the market, has a huge market sales volume, good clumping effect, and can be flushed into the toilet. Soybean residue is a by-product in the production process of tofu. Using soybean residue can reduce the generation of waste, realize the recycling of resources, and conform to the environmental protection concept; soybean residue is rich in plant fiber, has good water absorption and odor absorption properties, can effectively control odors, and keep the environment clean. In addition to the main ingredient soybean residue, many auxiliary materials need to be added to the soybean residue cat litter, and the auxiliary materials can make the soybean residue cat litter have better functions such as clumping, adjusting the hardness and acid-base balance of the cat litter.

[0003] Further retrieval found that the Chinese invention patent authorization announcement number CN102687669B (Prior Art 1) discloses a soybean residue cat litter made from wet soybean residue and a manufacturing method thereof, specifically including the following raw materials in weight percentages: 50 - 85% of fresh wet soybean residue with a water content weight ratio of 70 - 80%, 5 - 40% of plant binder, 0.1 - 10% of surfactant, 0.01 - 3% of calcium propionate, 1 - 10% of biological deodorant. The fresh wet soybean residue with a water content weight ratio of 70 - 80% is fresh wet pea residue, and the biological deodorant is an EM compound bacteria microbial deodorant; the surfactant is a mixture of sodium polyacrylate and sodium dodecyl sulfate, and the weight ratio of sodium polyacrylate to sodium dodecyl sulfate is 1:2 - 7.

[0004] However, sodium dodecyl sulfate in Prior Art 1 has health hazards, has a stimulating effect on mucous membranes and the upper respiratory tract, has a stimulating effect on eyes and skin, and can cause allergic reactions in the respiratory system.

[0005] After retrieval, the Chinese invention patent announcement number CN115226640B (Prior Art 2) discloses a biological cat litter capable of deodorizing and antibacterial and a preparation method thereof. By adding enzyme preparations, probiotics and dandelion extracts to the tofu cat litter, the three substances act synergistically, can not only inhibit bacteria and deodorize, but also delay the rancidity of the cat litter, and at the same time prevent urinary tract infections in cats.

[0006] After retrieval, the Chinese invention patent application publication number CN114521496A (Prior Art 3) discloses an antibacterial and deodorizing cat litter containing probiotics and its production process. By using a combination of plant fibers, adhesives, zeolite mineralization balls, probiotics, and bitter agents, the product finally has the capabilities of high-efficiency moisture absorption and deodorization, inhibiting moisture and mildew, and the reproduction of harmful bacteria, low dust, easy to clean, not easily eaten by cats by mistake, and is beneficial to maintaining the microecological balance of the cat's skin, improving the immunity of the cat's skin, and making the skin and hair healthier.

[0007] Both of the above Prior Arts 2 and 3 introduce probiotics as the core functional components and achieve functions such as antibacterial and deodorization through the synergistic effect of multiple components. The preparation method in Prior Art 1 discloses forming through a screw extrusion temperature control granulator, with the screw temperature controlled between 50 - 100°C and the dryer temperature controlled between 40 - 130°C; therefore, when preparing soybean residue cat litter with a traditional cat litter granulator, the temperature exceeding 40°C in the granulation step and the drying step will destroy the activity of the probiotics added to the cat litter. In order to avoid the inactivation of probiotics caused by high-temperature drying, it is necessary to improve the granulation process of soybean residue cat litter. Summary of the Invention

[0008] Aiming at the deficiencies of the prior art, the technical problem solved by the present invention is to provide an edible soybean residue cat litter to solve the problem of intestinal diseases caused by kittens or cats with pica eating cat litter by mistake.

[0009] To solve the above problems, the technical solution adopted by the present invention is: an edible soybean residue cat litter, comprising the following raw materials in parts by weight: 600 - 650 parts of soybean residue with a moisture content of 10 - 12%, 300 - 320 parts of corn starch, 18 - 22 parts of guar gum, 8 - 12 parts of gluten powder, 30 - 35 parts of food-grade calcium carbonate, 1 - 2 parts of nisin, 1 - 2 parts of skimmed milk powder, 0.8 - 1.2 parts of vitamin E, 0.4 - 0.6 parts of Lactobacillus acidophilus, 0.4 - 0.6 parts of Saccharomyces cerevisiae, 0.4 - 0.6 parts of Bacillus amyloliquefaciens, and 0.4 - 0.6 parts of Rhizopus.

[0010] The main functions of each raw material are as follows: soybean residue provides water absorption and degradability, corn starch enhances the agglomeration property, guar gum and gluten powder are natural binders, food-grade calcium carbonate is used to adjust hardness and acid-base balance, nisin is a natural antibacterial agent, skimmed milk powder is a natural fragrance agent, vitamin E is an antioxidant, and Lactobacillus acidophilus, Saccharomyces cerevisiae, Bacillus amyloliquefaciens, and Rhizopus belong to a nutritional probiotic group, which can promote intestinal health.

[0011] To avoid the inactivation of cat litter probiotics caused by high-temperature drying during granulation, a supercritical CO2 granulator is used when preparing the cat litter.

[0012] The beneficial effects of this solution are as follows: 1. By adding vitamin E and various probiotics, the nutritional value of the okara cat litter is improved, and even if the cat accidentally eats it, it will not affect the cat's health, with zero risk of accidental ingestion; 2. Avoid inactivation of probiotics: The supercritical CO2 granulation technology is used to avoid the inactivation of probiotics caused by high-temperature drying; 3. Using okara as the main raw material not only reduces the emission of food industry waste but also realizes the recycling of resources.

[0013] Furthermore, 1-2 parts by weight of purple cabbage extract are added to the cat litter raw materials. Purple cabbage turns red when it encounters acid, turns green when it encounters something, and turns green when it encounters abnormal cat urine, thus playing a role in prompting the health risks of cats, and purple cabbage is edible, safe and reliable. Description of the Drawings

[0014] Figure 1 It is a process flow chart for the production of edible okara cat litter. Detailed Embodiments

[0015] The technical solutions and effects of the present invention will be described in detail below in combination with examples and comparative examples.

[0016] The production process of the present invention includes the following steps:

[0017] S1 Batching: Use okara with a moisture content of 10-12%, weigh dry raw materials such as corn starch, guar gum, wheat gluten, food-grade calcium carbonate, skim milk powder, etc. according to the formula ratio. Vitamin E is stored in a dark, dry and refrigerated manner. Bacteriostatic agents such as nisin, Lactobacillus acidophilus, Saccharomyces cerevisiae, Bacillus amyloliquefaciens, Rhizopus sp. need to be stored sealed and away from light, and are opened and weighed before feeding to avoid inactivation;

[0018] S2 Crushing: Use a crusher to crush the okara to 80-100 mesh, and remove the coarse fiber particles after sieving; the corn starch is dispersed through an 80-mesh vibrating screen; the guar gum and wheat gluten are preliminarily mixed in proportion to avoid agglomeration when directly contacting high-moisture materials subsequently.

[0019] S3 Feeding: Feed okara, corn starch, the mixture of guar gum and wheat gluten, food-grade calcium carbonate, the mixture of bacteriostatic agents, and vitamin E into the mixer in sequence. Dissolve the skim milk powder in warm water at 40°C and evenly spray it into the mixer by spraying.

[0020] S4 Mixing: Control the rotation speed of the mixer at 20-40 rpm, the temperature ≤ 40°C, the total mixing time at 25-30 minutes, and let it stand for 5-10 minutes after mixing.

[0021] S5 Granulation: Dissolve the mixed material in a solvent and granulate it by supercritical CO2 to form a porous structure inside the particles, and control the particle size to be 2-3 mm.

[0022] S6 Drying: Place the prepared granules in a well-ventilated passage for natural drying.

[0023] S7 Sieving: Sieve the product dried in step S6 through a horizontal vibrating air classifier sieve.

[0024] S8 Packaging: Use an aluminum foil bag filled with nitrogen and sealed, with a desiccant placed inside. The desiccant is physically isolated from the product, and the packaging is labeled "Store in a cool place at low temperature".

[0025] The water absorption test steps of the cat litter of the present invention are as follows:

[0026] Weigh 10 g (denoted as m0) of fresh cat litter and place it in a sieve. Immerse the cat litter in the sieve completely in 100 mL of water and start timing. After standing for 5 minutes, lift the sieve vertically and drain the water until no continuous drops drip (for 1 minute). Weigh the total mass of the cat litter after water absorption (denoted as m1). The water absorption calculation formula is as follows:

[0027]

[0028] Immerse the cat litter after weighing the water absorption in water again. After standing for 1 minute, lift the sieve vertically and drain the water until no continuous drops drip (for 1 minute), and weigh the total mass of the cat litter after water absorption again. Repeat the above operation and weigh every 2 minutes until the mass difference between two consecutive times < 0.1 g. Record the total time as the saturated water absorption time.

[0029] Note: Each group of samples is tested 3 times and the average value is taken.

[0030] The clumping test steps of the cat litter of the present invention are as follows:

[0031] Uniformly spread the cat litter in a plastic basin with a diameter of 15 cm to a thickness of 5 cm; vertically inject simulated urine with a single injection volume of 30 mL (simulating the single urine output of an adult cat), and the pouring height is 10 cm; after standing for 2 minutes, gently shovel up the clump with a spatula and record whether the clump is complete and whether the edge is scattered.

[0032] The pH value test steps of the cat litter of the present invention are as follows:

[0033] Direct test for solids: Grind the cat litter into a uniform powder, take 5 g of the powder and mix it with 50 mL of water, stir for 2 minutes, and then take the supernatant for testing after standing for 5 minutes.

[0034] Test after simulated use: Inject 30 mL of simulated urine (pH value is 8.5) into the cat litter, stand for 2 minutes to form a clump, take 5 g of the wet cat litter after breaking the clump, add 50 mL of water and mix, stir for 2 minutes, and then take the supernatant for testing after standing for 5 minutes.

[0035] The survival rate test of the probiotics in the cat litter of the present invention adopts the dilution coating plate method.

[0036] Example 1 (containing probiotics + low-temperature process)

[0037] Raw material ratio (by weight): 630 parts of soybean dregs with a moisture content of 11%, 310 parts of corn starch, 20 parts of guar gum, 10 parts of gluten powder, 32 parts of food-grade calcium carbonate, 1.5 parts of nisin, 1.5 parts of skimmed milk powder, 1 part of vitamin E, 0.5 part of Lactobacillus acidophilus, 0.5 part of Saccharomyces cerevisiae, 0.5 part of Bacillus amyloliquefaciens, 0.5 part of Rhizopus.

[0038] Preparation process: Use a supercritical CO2 granulator for low-temperature granulation (temperature control ≤ 40°C), and the particle size is 2-3 mm.

[0039] Performance test:

[0040] Water absorption: The water absorption is 2.8 g / g, and the saturated water absorption time is 10 minutes.

[0041] Clumping property: The clumps are complete and there is no scattering at the edges.

[0042] pH value: Using the above-mentioned "direct solid test" method, the measured pH value is 7.0; using the "test after simulated use" method, the measured pH value is 8.5.

[0043] Probiotics: Before and after granulation, the viable count of probiotics (CFU / g) is measured by the "dilution coating plate method". After comparison, the survival rate of probiotics after granulation is ≥ 90%.

[0044] Comparative example 1 (containing probiotics + health warning function)

[0045] Raw material ratio (by weight): On the basis of Example 1, 1.5 parts of purple cabbage extract are added; the preparation process is the same as that of Example 1.

[0046] Performance test:

[0047] Water absorption: The water absorption is 2.8 g / g, and the saturated water absorption time is 10 minutes.

[0048] Clumping property: The clumps are complete and there is no scattering at the edges.

[0049] pH value: Using the above-mentioned "direct solid test" method, the measured pH value is 7.0; using the above-mentioned "test after simulated use" method, the measured pH value is 8.5.

[0050] Probiotics: Before and after granulation, the viable count of probiotics (CFU / g) is measured by the "dilution coating plate method". After comparison, the survival rate of probiotics after granulation is ≥ 90%.

[0051] Additional tests:

[0052] Color change of cat litter: The color of the original cat litter is light yellow, and the cat litter after "testing after simulated use" turns green.

[0053] Comparative Example 2 (containing probiotics + high-temperature process)

[0054] Raw material ratio: The same as in Example 1 (containing all probiotics).

[0055] Preparation process: Use a temperature-controlled granulator (the maximum temperature can reach above 100°C).

[0056] Performance tests:

[0057] Water absorption: The water absorption is 2.8 g / g, and the saturation time is 10 minutes.

[0058] Clumping property: The clumps are complete, and there is no scattering at the edges.

[0059] pH value: Using the above-mentioned "direct solid test" method, the measured pH value is 7.0; using the above-mentioned "testing after simulated use" method, the measured pH value is 8.5.

[0060] Probiotics: Before and after granulation, the viable count of probiotics (CFU / g) was measured by the "dilution plating method". After comparison, the survival rate of probiotics after granulation was ≤30%.

[0061] Test conclusions:

[0062]

[0063]

[0064] Comparing the color changes between Example 1 and Comparative Example 1, adding purple cabbage extract to the cat litter raw materials causes the color of the cat litter to change from light yellow to green when encountering abnormal urine (pH = 8.5), and it does not affect the water absorption, clumping property or survival rate of probiotics in the cat litter; therefore, purple cabbage extract can be used as a safe and reliable indicator to prompt potential health risks of cats through color changes, expanding the functionality of the cat litter.

[0065] Comparing the survival rate of probiotics between Example 1 and Comparative Example 2, supercritical CO2 low-temperature granulation can effectively protect the activity of probiotics, while using a conventional temperature-controlled granulator results in a large loss of probiotic activity, verifying the necessity of the low-temperature process.

[0066] Through the collaborative design of the low-temperature granulation process and the probiotic-soybean residue composite formula, the present invention can effectively reduce the destruction of the probiotic activity in the cat litter during the preparation of soybean residue cat litter by traditional cat litter granulators without changing the water absorption, clumping property, and pH value of the cat litter, and increases the health monitoring functionality of the edible soybean residue cat litter.

[0067] The above are only embodiments of the present invention, and common general knowledge such as specific structures and characteristics known in the solutions is not described in detail herein. It should be noted that for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, and these should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope required by this application shall be subject to the content of its claims, and the specific implementation manners and the like recorded in the specification can be used to interpret the content of the claims.

Claims

1. Edible bean curd dregs cat litter, characterized by: The cat litter raw materials include, by weight: 600-650 parts of bean dregs with a moisture content of 10-12%, 300-320 parts of corn starch, 18-22 parts of guar gum, 8-12 parts of gluten, 30-35 parts of food-grade calcium carbonate, 1-2 parts of nisin, 1-2 parts of skimmed milk powder, 0.8-1.2 parts of vitamin E, 0.4-0.6 parts of Lactobacillus acidophilus, 0.4-0.6 parts of Saccharomyces cerevisiae, 0.4-0.6 parts of Bacillus amyloliquefaciens, and 0.4-0.6 parts of Rhizopus; The cat litter also includes 1-2 parts of purple cabbage extract; Described cat litter is made as follows: S1 ingredients: using bean dregs with a moisture content of 10-12%, weighing corn starch, guar gum, gluten, food-grade calcium carbonate, skimmed milk powder, vitamin E, nisin, Lactobacillus acidophilus, Saccharomyces cerevisiae, Bacillus amyloliquefaciens, and Rhizopus according to the formula ratio; S2 Crushing: crush the bean dregs to 80-100 meshes using a crusher, and remove the coarse fiber particles after sieving; disperse the corn starch through an 80-mesh vibrating screen; preliminarily mix the guar gum and gluten powder according to the proportion; S3 feeding: add bean dregs, corn starch, guar gum and gluten mixture, food-grade calcium carbonate, bacterial agent mixture, vitamin E to the mixer in sequence, dissolve skim milk powder in 40°C warm water, and spray evenly into the mixer by spraying; S4 Mixing: Control the mixer to mix, and let it stand for 5-10 minutes after mixing; S5 granulation: dissolving the mixed substances in a solvent and granulating them through supercritical CO2 to form a porous structure inside the particles and control the particle size to 2-3 mm; S6 Drying: Place the prepared particles in a well-ventilated passage to dry naturally; S7 sieving: the dried product is sifted through a vibrating screen; S8 packaging: Aluminum foil bag is sealed with nitrogen and built-in desiccant, which is physically isolated from the product.

2. The edible bean curd dregs cat litter according to claim 1, characterized in that: In step S4, the mixer has a rotation speed of 20-40 rpm, a temperature of ≤40° C., and a total mixing time of 20-30 minutes.

3. The edible bean curd dregs cat litter according to claim 1, characterized in that: The vibrating screen in step S7 is a horizontal vibrating air level screen.

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