Food-grade coloring product applied to pig breeding industry and preparation method of food-grade coloring product

Abstract

The invention discloses a food-grade coloring product applied to the live pig breeding industry, which is characterized by comprising the following components in percentage by weight: 0.5-15% of coloring agent, 0.5-15% of coloring agent, 0.5-15% of coloring agent, 0.5-15% of coloring agent and the balance of water. 40%-80% of water; 10%-30% of a water retention agent; 0.1%-20% of a thickening agent; 0.1%-5% of a stabilizer; and 0.01%-5% of a preservative. The invention also discloses a preparation method of the composition. Compared with the prior art, the pig ketone body can be marked, and coloring is stable; the food safety risk caused by adopting a non-food-grade crayon material during pig ketone body coloring is reduced; the problem that related high-risk substances such as transferable heavy metals (such as lead and mercury) and polycyclic aromatic hydrocarbons (such as naphthalene, pyrene, phenanthrene and benzo [g, h, i] perylene) possibly pollute livestock through skin contact is reduced; the coloring trace smearing problem and the equipment cleaning problem are convenient to clean; the dust pollution problem of the coloring agent is reduced.

Description

Technical Field

[0001] This invention relates to the field of food-grade coloring product manufacturing, specifically to a food-grade coloring product used in the pig farming industry and its preparation method. Background Technology

[0002] Pig farming is one of the most traditional agricultural livestock products and an important industry in my country's agriculture. With the improvement of people's living standards and living environment, my country's pig farming industry is transforming from traditional to modern, undergoing significant changes in farming models, regional layout, production methods, and production capacity. It faces numerous challenges, including weak independent innovation capabilities, prominent food safety issues, rising labor costs, reliance on imported breeding stock, serious disease outbreaks, significant environmental pressure, and a shortage of feed resources. However, it also presents opportunities such as improved conditions for independent innovation, a large international market, steady growth in the domestic market, and strong government support. Future development directions mainly focus on "food safety," "appropriately scaled farming," "intelligent pig farming," "animal welfare," and "low-carbon emissions."

[0003] my country is currently the world's largest producer and consumer of pork. According to data from the National Bureau of Statistics, in 2024, China's hog slaughter reached 702.56 million heads, pork production reached 57.06 million tons, hog inventory reached 427.43 million heads, and breeding sow inventory reached 40.78 million heads. Although this represents a slight decrease compared to the previous year, it still ranks third in production over the past 16 years and remains at a relatively high level, making it the world's largest pork producer. According to combined data from the National Bureau of Statistics and the U.S. Department of Agriculture, China's pork consumption in 2024 was 57.952 million tons, accounting for approximately 50% of global pork consumption during the same period, making it the world's largest pork consumer. Although affected by the earlier decline in beef and mutton prices, pork still maintains a dominant position in my country's meat consumption for a long time. According to data from the National Bureau of Statistics, in 2024, my country's pork production was 57.06 million tons, accounting for 59.05% of the total pork, beef, mutton, and poultry production of 96.63 million tons. my country's population size and dietary structure determine that pork will continue to dominate my country's animal protein demand for a considerable period of time.

[0004] Meanwhile, the notice issued by the General Office of the Ministry of Agriculture and Rural Affairs on March 20, 2019, regarding the standardization of animal quarantine and inspection stamps and related mark designs, clearly states that the ink used for quarantine and inspection stamps on pig carcasses must be made from food-grade raw materials that meet national standards and that the materials used must comply with national regulations and must not contaminate pig products. Therefore, using food-grade colorants as the raw materials for stamp ink has become a necessary option due to policy. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the purpose of this invention is to provide a food-grade coloring product for use in the pig farming industry and its preparation method.

[0006] A food-grade coloring product used in the pig farming industry, comprising the following components by weight percentage: Colorant 0.5%-15%; Water content: 40%-80%; Moisture retention agent 10%-30%; Thickener 0.1%-20%; Stabilizer 0.1%-5%; Preservatives: 0.01%-5%.

[0007] In a preferred embodiment of the present invention, the colorant is any one or more of carmine, allura red, red yeast rice red, or brilliant blue.

[0008] In a preferred embodiment of the present invention, the water is any one or more of purified water, deionized water, and pure water.

[0009] In a preferred embodiment of the present invention, the moisture-retaining agent is any one or more of propylene glycol, glycerol, and phosphoric acid.

[0010] In a preferred embodiment of the present invention, the thickener is any one or more of gum arabic, pectin, sodium alginate, and methylcellulose.

[0011] In a preferred embodiment of the present invention, the stabilizer is any one or more of polydextrose and sodium citrate.

[0012] In a preferred embodiment of the present invention, the preservative is any one or more of sodium benzoate and potassium sorbate.

[0013] A method for preparing food-grade coloring products for use in the pig farming industry includes the following steps: Mix the colorant, water, and moisture-retaining agent thoroughly. Then add the thickener, stabilizer and preservative and mix again.

[0014] The beneficial effects of this invention are as follows: It solves the food safety risks associated with the use of non-food grade crayon materials in traditional pig carcass coloring, facilitates the removal of coloring marks and equipment cleaning, is easy to operate, has high adhesion, improves production efficiency, allows the color to last longer, and eliminates the dust pollution problem caused by coloring agents. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the product of the present invention.

[0016] Figure 2 This is a test schematic diagram of the product of the present invention. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of the invention. Furthermore, in the following descriptions, well-known structures and technologies are omitted to avoid unnecessarily obscuring the concept of the invention.

[0018] The present invention will be further described below with reference to specific embodiments: Example 1

[0019] Add 140mL of deionized water, 3.3g of carmine, 0.6g of allura red, 0.1g of red yeast rice, 24g of propylene glycol, and 20g of glycerin to a 500mL beaker. Start stirring and, once the mixture is uniformly colored, increase the stirring speed and slowly add 6g of gum arabic and 4g of sodium carboxymethyl cellulose. After the mixture is thoroughly stirred, add 1g of sodium citrate, 0.6g of sodium benzoate, 0.3g of potassium sorbate, and 0.1g of polydextrose, and continue stirring for 15 minutes to obtain the final product. Example 2

[0020] Add 150mL of deionized water, 0.88g of brilliant blue, 0.02g of allura red, and 39g of glycerin to a 500mL beaker. Start stirring and, once the mixture is uniformly colored, increase the stirring speed and slowly add 8g of pectin. After the mixture is thoroughly stirred, add 1.2g of sodium citrate and 0.9g of potassium sorbate, and continue stirring for 15 minutes to obtain the final product.

[0021] The above-mentioned food-grade coloring products (such as...) Figure 1 Apply the solution using a sponge and place it on the injection needle. Figure 2 As shown, coloring was performed simultaneously by injection onto pigskin, or the aforementioned food-grade coloring product was applied to pigskin by brushing. The state after coloring was observed, and tests were conducted to simulate the environment in which live pigs were kept, observing the adhesion and fading of the coloring product.

[0022] A grid pattern with equal spacing was drawn on pigskin using the cross-cutting method. Special adhesive tape was then applied and quickly peeled off at a specific angle. The degree of color peeling in the grid areas was observed, and a grade was assigned based on the proportion of peeled area (generally, grade 0 is the best, and grade 5 is the worst). Tests were conducted at 30 minutes, 1 hour, 2 hours, 4 hours, and 8 hours after coloring. The results are shown in Table 1 below. Table 1: Color stripping results using the cross-cut method

[0023] The same grid method was used, but the peeling of color in the grid areas was observed after rubbing with two pieces of pigskin. The specific results are shown in Table 2 below: Table 2: Color peeling results using the cross-cut rubbing method

[0024] Referring to the vaccination intervals in pig farming, and simulating pig behavior through timed watering, mud splashing, and skin rubbing, the color fading was observed, and the degree of fading was graded (generally, grade 0 is complete fading, and grade 5 is no fading observed). Specific details are shown in Table 3 below: Table 3: Observation Results of Fading Experiments Simulating Biological Aquaculture Environment

[0025] Compared with existing technologies, this invention can mark ketone bodies in pigs with stable coloring; it reduces the food safety risks associated with the use of non-food grade crayon materials when coloring ketone bodies in pigs; it reduces the risk of livestock contamination through skin contact caused by high-risk substances such as migratable heavy metals (e.g., lead, mercury) and polycyclic aromatic hydrocarbons (e.g., naphthalene, pyrene, phenanthrene, benzo[g,h,i]perylene); it facilitates the removal of coloring traces and equipment cleaning; and it reduces colorant dust pollution.

[0026] The foregoing has shown and described the basic principles and main features of the invention and the advantages of the invention.

[0027] Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope. All such changes and modifications fall within the scope of the present invention as claimed, which is defined by the appended claims and their equivalents.

Claims

1. A food-grade coloring product used in the pig farming industry, characterized in that, By weight percentage, it includes the following components: Colorant 0.5%-15%; Water content: 40%-80%; Moisture retention agent 10%-30%; Thickener 0.1%-20%; Stabilizer 0.1%-5%; Preservatives: 0.01%-5%.

2. The food-grade coloring product used in the pig farming industry as described in claim 1, characterized in that, The colorant is any one or more of carmine, allura red, red yeast rice red, or brilliant blue.

3. The food-grade coloring product used in the pig farming industry as described in claim 1, characterized in that, The water is any one or more of purified water, deionized water, and pure water.

4. A food-grade coloring product for use in the pig farming industry as described in claim 1, characterized in that, The moisture-retaining agent is any one or more of propylene glycol, glycerol, and phosphoric acid.

5. A food-grade coloring product for use in the pig farming industry as described in claim 1, characterized in that, The thickener is any one or more of gum arabic, pectin, sodium alginate, and methylcellulose.

6. A food-grade coloring product for use in the pig farming industry as described in claim 1, characterized in that, The stabilizer is any one or more of polydextrose and sodium citrate.

7. A food-grade coloring product for use in the pig farming industry as described in claim 1, characterized in that, The preservative is any one or more of sodium benzoate and potassium sorbate.

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