Microelement lick brick with enhanced moisture resistance and preparation method thereof

Abstract

The invention provides a moisture-resistance-enhanced microelement lick brick and a preparation method thereof, microelements of the microelement lick brick are coated in a hydrophobic layer to form a coating structure, and the coating structure and a base material form the moisture-resistance-enhanced microelement lick brick; the coating structure is provided with a core structure and a shell structure coating the outer layer of the core structure, the core structure comprises a mixture of a plurality of minerals, and the shell structure comprises an edible hydrophobic layer. According to the moisture-resistance-enhanced trace element lick brick provided by the invention, the trace elements are coated in the hydrophobic layer to form a coating structure, the shell structure comprises the edible hydrophobic layer, and the trace elements can be separated from moisture through the hydrophobic layer, so that the moisture resistance of the lick brick is enhanced.

Description

Technical Field

[0001] The present application belongs to the field of lick brick feed technology, and specifically relates to a trace element lick brick with enhanced moisture resistance and a preparation method thereof. Background Art

[0002] Trace element lick blocks are commonly used in the livestock industry as a feed additive to supplement animal nutrition. Lick blocks typically contain a variety of essential minerals and trace elements, such as copper, iron, zinc, manganese, iodine, and selenium. These ingredients play a vital role in maintaining animal health and promoting growth and development. Lick blocks provide a convenient way for animals to lick themselves, thereby replenishing trace element deficiencies in their bodies.

[0003] However, lick bricks currently on the market suffer from several issues, particularly poor moisture resistance. Traditionally, lick bricks are manufactured by mixing mineral supplements with other feed ingredients and then pressing them into a mold. While this method offers advantages such as accurate metering, high production efficiency, and consistent quality, when exposed to moisture, trace mineral salts readily absorb moisture and dissolve, leading to nutrient loss. Furthermore, due to reduced strength in wet environments, lick bricks can clump, mold, or crack, hindering animal feeding and nutrient absorption.

[0004] Currently, a common method for improving the strength of lick bricks is to use high-strength adhesives to increase the bond strength between the various components of the lick brick. For example, Chinese patent application number CN201810194889.X discloses a lick brick adhesive and a weather-resistant nutritional lick brick and its preparation method, using urea-formaldehyde resin as the main component of the lick brick adhesive. However, urea-formaldehyde resin may release some harmful gases, such as formaldehyde, during the curing process through compression molding. Long-term and large-scale use may have certain impacts on the environment and animal health. Summary of the Invention

[0005] The technical problem to be solved by this application is to provide a trace element lick brick with enhanced moisture resistance and a preparation method thereof, and to improve the moisture resistance of the lick brick in a humid environment by optimizing the preparation process of the trace element lick brick and the raw material composition of the lick brick, thereby avoiding affecting the feeding and nutrient absorption of animals.

[0006] In order to solve the above-mentioned problems of the present application, the present application provides a trace element lick brick with enhanced moisture resistance, wherein the trace elements of the trace element lick brick are coated in a hydrophobic layer to form a coating structure, and the coating structure and the substrate form a trace element lick brick with enhanced moisture resistance;

[0007] The coating structure comprises a core structure and a shell structure coated on the outer layer of the core structure, the core structure comprises a mixture of several minerals, the shell structure comprises an edible hydrophobic layer, and the mass ratio of the core structure to the shell structure is 1:(0.09-0.18);

[0008] The mass of the coating structure accounts for at least 30% of the total mass of the trace element lick brick.

[0009] In the trace element lick brick with enhanced moisture resistance provided by the above scheme, the trace elements are coated in the hydrophobic layer to form a coating structure, and the shell structure includes an edible hydrophobic layer. The hydrophobic layer can block the trace elements from moisture, thereby enhancing the moisture resistance of the lick brick.

[0010] In order to further improve the overall mechanical properties of the lick brick, as an option for the above-mentioned trace element lick brick components with enhanced moisture resistance, straw powder, corn flour, wheat bran, and molasses are used, and the mass of molasses accounts for 11% to 15% of the total mass of the trace element lick brick.

[0011] Preferably, the edible hydrophobic layer comprises palm wax and / or beeswax.

[0012] In order to improve the binding ability of the hydrophobic layer and the trace elements and minerals, an emulsified layer formed by an emulsifier is provided between the hydrophobic layer and the core structure, and the content of the emulsifier does not exceed 0.3% of the total mass of the coating structure.

[0013] In a preferred embodiment, the emulsifier includes at least one of ammonium phospholipids.

[0014] The present invention also provides a method for preparing a trace element lick brick with enhanced moisture resistance, comprising:

[0015] Thoroughly mix 30 to 40 parts by weight of several minerals to form the core structure component of the mineral mixture;

[0016] dissolving 20 to 30 parts of palm wax and / or beeswax in 100 to 120 parts of an oily substance to obtain a shell structure component;

[0017] The core structure component is added to a sufficient amount of the shell structure component and stirred thoroughly, and the excess shell structure component is filtered after stirring until the mass ratio of the core structure component to the shell structure component is 1:0.1-0.2;

[0018] A mixture of 45 to 50 parts straw powder, corn flour, and wheat bran is thoroughly mixed with the coating structure to obtain a lick brick powder;

[0019] After a sufficient amount of molasses is heated and melted into syrup, lick brick powder is added to the syrup, fully stirred, and then pressed into shape. Excess molasses after pressing is removed so that the molasses component accounts for 11% to 15% of the total mass of the trace element lick brick. The pressed block is dried to obtain a trace element lick brick with enhanced moisture resistance.

[0020] Through the above scheme, the minerals are first prepared into a coating structure with good hydrophobicity, and then the minerals in the coating structure are mixed with straw powder, corn flour, and wheat bran to obtain lick brick powder. Finally, molasses is heated and melted into syrup, which is then fully mixed with the lick brick powder and pressed into a roll, thereby blocking the minerals in the shell structure of the coating structure, thereby realizing the preparation of trace element lick bricks with enhanced moisture resistance.

[0021] In order to improve the binding ability of the hydrophobic layer with minerals, as a preferred option, the preparation of the shell structure component further includes: adding an emulsifier to the shell structure component and fully mixing, and the mass of the emulsifier in the shell structure component does not exceed 0.7% of the total mass of the shell structure component.

[0022] Furthermore, the pressure used for compression molding is ≥25kg / cm 2 .

[0023] Furthermore, the oily substance includes at least one of animal oil, cocoa butter, coconut oil, palm oil or vegetable oil.

[0024] Furthermore, the emulsifier includes ammonium phospholipid.

[0025] Furthermore, the minerals include at least one of: table salt, ferrous sulfate, calcium hydrogen phosphate, zinc sulfate, magnesium oxide, sodium selenite, potassium iodide, cobalt chloride, and anhydrous copper sulfate.

[0026] The beneficial effects of this application are:

[0027] In the trace element lick brick with enhanced moisture resistance provided by the present application, the trace elements are coated in a hydrophobic layer to form a coating structure, and the shell structure includes an edible hydrophobic layer. The hydrophobic layer can block the trace elements from moisture, thereby enhancing the moisture resistance of the lick brick.

[0028] The present invention adds oily substances and emulsifiers to the lick brick components. The oily substances are evenly dispersed by the emulsifiers and wrapped on the mineral surface of the lick brick, thereby preventing moisture from penetrating into the minerals and causing them to absorb moisture and dissolve. 2 The lick bricks are extruded under high pressure to ensure the compactness and hardness of the lick bricks and further improve the moisture resistance of the lick bricks. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a flow chart of a method for preparing a trace element lick brick with enhanced moisture resistance in an embodiment of the present application. DETAILED DESCRIPTION

[0030] The following embodiments of the technical solution of the present application are described in detail. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0031] The present application provides a trace element lick brick with enhanced moisture resistance, comprising: a trace element of the trace element lick brick coated within a hydrophobic layer to form a coating structure, the coating structure and a base material forming the trace element lick brick with enhanced moisture resistance; the coating structure having a core structure and a shell structure, the core structure comprising a mixture of several minerals, the shell structure comprising an edible hydrophobic layer, the mass ratio of the core structure to the shell structure being 1:(0.09-0.18). The mass of the coating structure accounts for at least 30% of the total mass of the trace element lick brick.

[0032] In one implementation, the ingredients of the substrate include: plant straw powder, corn flour, wheat bran, molasses, etc.;

[0033] In one implementation, the core of the coating structure comprises: salt, minerals;

[0034] In one implementation, the shell of the coating structure comprises: palm wax and / or beeswax.

[0035] In one implementation, there is an emulsified layer formed by an emulsifier between the hydrophobic layer and the core, and the content of the emulsifier does not exceed 0.05 parts.

[0036] In one implementation, the emulsifier includes ammonium phospholipid.

[0037] The present application also provides a method for preparing the above-mentioned trace element lick brick with enhanced moisture resistance, comprising the following steps: S1. Thoroughly mixing 30 to 40 parts by total mass of several minerals to form a core structure component of the mineral mixture, the minerals including: at least one of table salt, ferrous sulfate, calcium hydrogen phosphate, zinc sulfate, magnesium oxide, sodium selenite, potassium iodide, cobalt chloride, and anhydrous copper sulfate.

[0038] S2. Dissolving 20 to 30 parts of palm wax and / or beeswax in 100 to 120 parts of an oily substance to obtain a shell structure component, wherein the oily substance comprises at least one of animal oil, cocoa butter, coconut oil, palm oil, or vegetable oil; in order to improve the binding ability of the hydrophobic layer with minerals, as a preferred embodiment, the preparation of the shell structure component further comprises: adding an emulsifier to the shell structure component and mixing thoroughly, wherein the mass of the emulsifier in the shell structure component does not exceed 0.7% of the total mass of the shell structure component;

[0039] S3, adding the core structure component to a sufficient amount of the shell structure component and stirring them thoroughly, filtering the excess shell structure component after stirring until the mass ratio of the core structure component to the shell structure component is 1:0.1-0.2;

[0040] S4, thoroughly mixing 45-50 parts of a mixture of straw powder, corn flour, and wheat bran with the coating structure to obtain a lick brick powder;

[0041] S5. After heating and melting a sufficient amount of molasses into syrup, add the lick brick powder to the syrup, stir thoroughly, and then press into shape. Remove excess molasses after pressing so that the molasses component accounts for 11% to 15% of the total mass of the trace element lick brick. Dry the pressed block to obtain a trace element lick brick with enhanced moisture resistance. The pressure used for pressing is ≥20kg / cm 2 .

[0042] Based on the embodiments provided in this application, specific experiments have been conducted on this application. From these examples and comparative examples, it can be seen that the solutions provided in this application have achieved good results. It should be noted that the following examples are only used to illustrate the present invention in detail and do not limit the scope of protection of the invention in any way. It should be noted that although the hydrophobic layer used in the following examples is composed of beeswax, the performance of the lick brick described below can also be achieved by using palm wax. The oily substance used in the following examples is rapeseed oil, but the lick brick effect obtained in the following examples can also be achieved by using animal oil, cocoa butter, coconut oil, palm oil, or other vegetable oils.

[0043] Example 1

[0044] A method for preparing a trace element lick brick with enhanced moisture resistance, the method comprising the following steps:

[0045] S1. Thoroughly mix 10 parts of table salt, 5 parts of ferrous sulfate, 5 parts of zinc sulfate, 5 parts of potassium iodide, 5 parts of cobalt chloride, and 5 parts of magnesium oxide to form a core structure component of a 35-part mineral mixture;

[0046] S2. dissolving 30 parts of beeswax in 100 parts of vegetable oil (rapeseed oil) and mixing thoroughly to obtain 130 parts of shell structure components;

[0047] S3. Add 35 parts of core structure components to 130 parts of shell structure components and stir them thoroughly. After stirring, filter the excess shell structure components until the mass ratio of the core structure components to the shell structure components is 1:0.09, obtaining 38.15 parts of coating structure.

[0048] S4, thoroughly mixing 15 parts of corn straw powder, 15 parts of corn flour, and 15 parts of wheat bran to obtain 45 parts of base material powder; thoroughly mixing and dispersing 45 parts of base material powder with 38.15 parts of coating structure to obtain 83.15 parts of lick brick powder;

[0049] S5, after heating 40 parts of molasses to 125℃ and melting into molasses, add the mixture of the substrate and the coating structure into the molasses at 125℃ and stir thoroughly, then heat the mixture at 25kg / cm 2 The mixture was pressed at a pressure of 1000 ℃ for 1 minute to form a lick brick, and excess molasses was removed to obtain 97.15 parts by weight of a lick brick. The lick brick was cooled and dried to obtain a trace element lick brick with enhanced moisture resistance. The composition of the lick brick obtained in Example 1 is shown in Table 2.

[0050] Example 2 to Example 6

[0051] Examples 2 to 6 differ from Example 1 in the amount of added substances and process control in each step, and in addition, an emulsifier ammonium lecithin is added in step S2 of Examples 2 to 6. Other aspects are the same as Example 1. The control parameters of each step of Examples 2 to 6 are detailed in Table 1, and the components of the lick bricks obtained in Examples 2 to 6 are detailed in Table 2.

[0052] Comparative Example 1

[0053] The difference between Comparative Example 1 and Example 1 is that, in the preparation of the lick brick in Comparative Example 1, the components are directly mixed and then pressed into shape, specifically:

[0054] S1. After fully mixing 10 parts of salt, 5 parts of ferrous sulfate, 5 parts of zinc sulfate, 5 parts of potassium iodide, 5 parts of cobalt chloride, 5 parts of magnesium oxide, 15 parts of corn straw powder, 15 parts of corn flour, 15 parts of wheat bran, and 3.15 parts of beeswax-rapeseed oil solution, 83.15 parts of lick brick powder were obtained; the beeswax-rapeseed oil solution was prepared by dissolving 30 parts of beeswax in 100 parts of vegetable oil (rapeseed oil) at 70°C and mixing thoroughly to obtain 130 parts of beeswax-rapeseed oil solution;

[0055] S2, after heating 40 parts of molasses to 125℃ and melting into molasses, add the mixture of the substrate and the coating structure into the molasses at 125℃ and stir thoroughly, then heat the mixture at 25kg / cm 2 The lick brick was formed by pressing for 1 minute under a pressure of 1000 nm and removing excess molasses to obtain 97.15 parts by weight of a lick brick. The molded product was cooled and dried to obtain a trace element lick brick with enhanced moisture resistance. The density of the lick brick obtained in Comparative Example 2 was 1.8 g / cm 3 .

[0056] The composition of the lick brick obtained in Comparative Example 1 is shown in Table 2.

[0057] Comparative Example 2:

[0058] The difference between Comparative Example 2 and Example 1 is that in the preparation of the lick brick in Comparative Example 1, the components and the emulsifier are directly mixed and then pressed into shape, specifically:

[0059] The difference between Comparative Example 1 and Example 1 is that, in the preparation of the lick brick in Comparative Example 1, the components are directly mixed and then pressed into shape, specifically:

[0060] S1. After fully mixing 10 parts of salt, 5 parts of ferrous sulfate, 5 parts of zinc sulfate, 5 parts of potassium iodide, 5 parts of cobalt chloride, 5 parts of magnesium oxide, 15 parts of corn straw powder, 15 parts of corn flour, 15 parts of wheat bran, 3.15 parts of beeswax-rapeseed oil and 0.022 parts of emulsifier, 83.172 parts of lick brick powder were obtained; the preparation method of ammonium phospholipid-beeswax-rapeseed oil solution was as follows: 30 parts of beeswax and 0.91 parts of emulsifier were dissolved in 100 parts of vegetable oil (rapeseed oil) at 70°C and fully mixed to obtain 130.91 parts of ammonium phospholipid-beeswax-rapeseed oil solution;

[0061] S2, after heating 40 parts of molasses to 125℃ and melting into molasses, add the mixture of the substrate and the coating structure into the molasses at 125℃ and stir thoroughly, then heat the mixture at 25kg / cm 2 The lick brick was formed by pressing for 1 minute under pressure and removing excess molasses to obtain 97.172 parts by weight of a lick brick. The molded product was cooled and dried to obtain a trace element lick brick with enhanced moisture resistance. The density of the lick brick obtained in Comparative Example 2 was 1.8 g / cm 3 .

[0062] The composition of the lick brick obtained in Comparative Example 2 is shown in Table 2.

[0063] Comparative Example 3

[0064] The difference between Comparative Example 3 and Example 1 is that in the preparation of the licking brick in Comparative Example 3, the pressing force is 15 kg / cm 2 The rest is the same as Example 1.

[0065] The composition of the lick brick obtained in Comparative Example 3 is exactly the same as that in Example 1, except that the density of the lick brick is 1.2 g / cm 3 .

[0066] Table 1 Parameter configuration of each step in each embodiment

[0067]

[0068] Table 2 Trace element lick brick components obtained in each embodiment

[0069]

[0070]

[0071] Crushing Strength Test of Trace Element Lick Bricks After Exposure to Different Humidity Environments: Multiple identical lick bricks from Examples 1-5 and Comparative Examples 1-3 were placed in a constant temperature and humidity test chamber at 25°C and humidity levels of 25%, 55%, 75%, and 95%, respectively. The lick bricks were removed from the chamber after exposure to different humidity environments and subjected to crushing strength tests using a pressure tester within 20 minutes. The test results are detailed in Table 3.

[0072] Table 3 Crushing resistance of the lick bricks obtained in each embodiment and comparative example after erosion in different humidity environments

[0073]

[0074] It can be seen from Examples 1 and 2 that the addition of an emulsifier to the shell component can significantly enhance the water resistance of the minerals in the lick brick. The presumable reason is that the addition of the emulsifier can promote the hydrophobic layer to better and more evenly coat the minerals, thereby achieving the barrier between water and minerals by the hydrophobic layer.

[0075] It can be seen from Example 1, Example 5 and Comparative Example 3 that increasing the pressing pressure can improve the strength and moisture resistance of the lick brick. It is speculated that the reason is that increasing the pressing pressure can reduce the gaps between the substances in the lick brick, thereby forming a certain barrier effect on moisture.

[0076] It can be seen from Example 1, Example 2 and Comparative Example 1, Comparative Example 2 that the moisture resistance of the lick brick prepared by mixing minerals with corn straw powder, corn flour, wheat bran, etc. in the form of a coating structure to form a lick brick powder is significantly enhanced.

[0077] It can be seen from Comparative Examples 1 and 2 that the addition of an emulsifier to the lick brick prepared by directly mixing the components and then pressing and molding has limited ability to improve the overall moisture resistance of the lick brick.

[0078] The above examples, comparative examples, and experimental conclusions demonstrate that the method for preparing a moisture-resistant trace element lick brick provided herein optimizes the lick brick's preparation process and formulation design, effectively preventing the dissolution of minerals in humid environments, thereby further enhancing the lick brick's moisture resistance and facilitating its widespread application in actual production. Furthermore, the present application demonstrates significant beneficial effects.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A trace element lick brick with enhanced moisture resistance, characterized in that: The trace elements of the trace element lick brick are coated in the hydrophobic layer to form a coating structure, and the coating structure and the base material form a trace element lick brick with enhanced moisture resistance; The coating structure comprises a core structure and a shell structure coated on the outer layer of the core structure, the core structure comprises a mixture of several minerals, the shell structure comprises an edible hydrophobic layer, and the mass ratio of the core structure to the shell structure is 1:(0.09-0.18); The mass of the coating structure accounts for at least 30% of the total mass of the trace element lick brick.

2. The trace element licking brick according to claim 1, characterized in that: The components of the base material include straw powder, corn flour, wheat bran and molasses, and the mass of the molasses accounts for 11% to 15% of the total mass of the trace element lick brick.

3. The trace element licking brick according to claim 1, characterized in that: The edible hydrophobic layer comprises palm wax and / or beeswax.

4. The trace element licking brick according to any one of claims 1 or 2, characterized in that: An emulsified layer formed by an emulsifier is provided between the hydrophobic layer and the core structure, and the content of the emulsifier does not exceed 0.3% of the total mass of the coating structure.

5. The trace element licking brick according to claim 4, characterized in that: The emulsifier includes at least one of ammonium phospholipids.

6. A method for preparing a trace element lick brick with enhanced moisture resistance, characterized in that: include: Thoroughly mix 30 to 40 parts by weight of several minerals to form the core structure component of the mineral mixture; dissolving 20 to 30 parts of palm wax and / or beeswax in 100 to 120 parts of an oily substance to obtain a shell structure component; The core structure component is added to a sufficient amount of the shell structure component and stirred thoroughly, and the excess shell structure component is filtered after stirring until the mass ratio of the core structure component to the shell structure component is 1:0.1-0.2; A mixture of 45 to 50 parts of straw powder, corn flour, and wheat bran is fully mixed with the coating structure to obtain a lick brick powder; After a sufficient amount of molasses is heated and melted into syrup, the lick brick powder is added to the syrup and stirred thoroughly before being pressed into shape. Excess molasses after pressing is removed so that the molasses component accounts for 11% to 15% of the total mass of the trace element lick brick. The pressed block is dried to obtain a trace element lick brick with enhanced moisture resistance.

7. The method for preparing the trace element lick brick according to claim 6, characterized in that: The preparation of the shell structure component further includes: adding an emulsifier to the shell structure component and fully mixing the emulsifier, wherein the mass of the emulsifier in the shell structure component accounts for no more than 0.7% of the total mass of the shell structure component.

8. The method for preparing the trace element lick brick according to claim 5 or 6, characterized in that: The pressure used for the compression molding is ≥20kg / cm 2 .

9. The method for preparing the trace element lick brick according to claim 5 or 6, characterized in that: The oily substance includes at least one of animal oil, cocoa butter, coconut oil, palm oil or vegetable oil.

10. The method for preparing the trace element lick brick according to claim 5 or 6, characterized in that: The emulsifier includes ammonium phospholipid.

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