Fish fat regulator and preparation method thereof

Abstract

The invention provides a fish fat regulator and a preparation method thereof, and relates to the field of fish feed. Comprising a wall material, a core material, 5-10 parts of gelatin and 5-10 parts of cyclodextrin. The feed additive is prepared from 5-10 parts of porous activated carbon, 1-5 parts of citric acid, 1-5 parts of phosphoric acid, 1-5 parts of L-carnitine, 1-5 parts of choline, 5-10 parts of bile acid, 5-10 parts of linolenic acid, 1-2 parts of earthworm powder and 1-2 parts of corn flour. Dissolving citric acid in water, adding porous activated carbon, carrying out ultrasonic dispersion, adding phosphoric acid, bile acid and linolenic acid, and carrying out ultrasonic dispersion; adding cyclodextrin, uniformly stirring, standing at room temperature, freeze-drying and grinding to obtain powder; gelatin and water are mixed, heated and stirred, then the powder, L-carnitine and choline are added, the mixture is stirred to be uniform, spray granulation is conducted, and particles are obtained; and adding water into the residual raw materials and the particles, uniformly mixing, granulating and drying. The core material containing the effective components is wrapped by the wall material, so that the core material can be protected and prevented from being dissolved in water in advance, and the utilization rate of the effective components is increased.

Description

Technical Field

[0001] The invention relates to the field of fish feed, and in particular to a fish fat regulator and a preparation method thereof. Background Art

[0002] In aquaculture, regulating the fat metabolism rate in fish is a key link in improving fish health, growth performance and economic benefits. Excess fat in fish will accumulate in the liver, causing fish immunity to decline, making them more susceptible to illness and death. There are many factors that cause excess fat in fish, such as high protein and fat content and high sugar content in the feed. When the excess protein and sugar content exceeds the fish's needs, the excess protein and sugar will be converted into fat and stored through a series of conversions. The fat will accumulate in the liver, causing fatty liver and other problems.

[0003] At present, the main ways to adjust fish fat metabolism are: 1. Feed component regulation: by adjusting the fat and fatty acid content in the feed, especially adding high levels of unsaturated fatty acids (such as EPA and DHA), inhibiting the activity of fat synthase, promoting the hydrolysis and oxidative decomposition of fat cells, thereby reducing fat intake and accumulation. 2. Adding bile acid to the feed: Bile acid can promote the digestion and absorption of fat, while helping the transport and metabolism of fat in the body, reducing the deposition of fat in organs such as the liver. 3. Use fat metabolism regulators: Fat regulators such as compound acidifiers, Chinese medicine mixtures and alkaloid preparations can accelerate the conversion of fish body fat and reduce organ fat deposition. 4. Improve the breeding environment: By optimizing water quality, controlling breeding density and feeding amount, the growth environment of fish can be improved, stress response can be reduced, and the normal fat metabolism can be facilitated.

[0004] Patent 201610300387.1 discloses a fish feed additive for increasing the activity of fat metabolic enzymes, which contains rapeseed, almonds, blueberry leaves, millet, ginger, potatoes, pepper, fresh peach leaves, choline chloride, lactic acid bacteria, Bacillus subtilis and other ingredients. It can increase the activity of fat metabolic enzymes in fish, while improving the fish's absorption of nutrients in feed, improving the taste of feed, and increasing the utilization rate of feed. However, the active ingredients in the additive are easily soluble in water and are not easily captured by fish during feeding, so the utilization rate is low. Summary of the invention

[0005] The object of the present invention is to provide a fish fat regulator, which comprises a wall material and a core material. The core material containing effective ingredients is wrapped by the wall material, which can protect the core material and prevent the core material from dissolving in water in advance, so as to improve the utilization rate of the effective ingredients in the core material.

[0006] Another object of the present invention is to provide a method for preparing a fish fat regulator, which forms a multi-layer core-shell structure by wrapping with two different wall materials to isolate different effective ingredients, thereby avoiding interference between different raw materials and controlling the release time of different effective ingredients, so that fish can fully utilize the effective ingredients in the regulator.

[0007] The present invention solves the technical problem by adopting the following technical solutions.

[0008] On the one hand, an embodiment of the present invention provides a fish fat regulator, including a wall material and a core material, wherein the core material includes the following raw materials by weight: 5-10 parts of porous activated carbon, 1-5 parts of citric acid, 1-5 parts of phosphoric acid, 1-5 parts of L-carnitine, 1-5 parts of choline, 5-10 parts of bile acid, 5-10 parts of linolenic acid, 1-2 parts of earthworm powder and 1-2 parts of corn flour.

[0009] In some embodiments of the present invention, the core material further comprises 1-2 parts of fish bone powder, 1-2 parts of hawthorn powder, and 1-2 parts of cicada pupa powder by weight. Fish bone powder, hawthorn powder, and cicada pupa powder have a certain fragrance and can be used as an attractant to induce fish to eat.

[0010] In some embodiments of the present invention, the wall material comprises the following raw materials by weight: 5-10 parts of gelatin and 5-10 parts of cyclodextrin.

[0011] In some embodiments of the present invention, the wall material comprises the following raw materials by weight: 5 parts of gelatin and 5 parts of cyclodextrin;

[0012] The core material includes the following raw materials by weight: 5 parts of porous activated carbon, 5 parts of citric acid, 1 part of phosphoric acid, 5 parts of L-carnitine, 5 parts of choline, 10 parts of bile acid, 10 parts of linolenic acid, 1 part of earthworm powder, 2 parts of corn flour, 2 parts of fish bone powder, 2 parts of hawthorn powder, and 2 parts of cicada pupa powder.

[0013] Citric acid: As an additive, it can increase the activity of digestive enzymes, promote fish growth, and promote fat metabolism. Adding it in appropriate amounts can improve feed utilization.

[0014] Bile acid: It can regulate lipid metabolism, reduce fat deposition in the liver, maintain liver health, promote fat utilization, improve fish body shape, and increase breeding benefits. At the same time, bile acid also has an antibacterial effect, inhibiting the growth of harmful bacteria by regulating intestinal pH and destroying bacterial cell membranes.

[0015] L-carnitine can enhance the β-oxidation of fatty acids in fish mitochondria, promote the transport and oxidation of fatty acids, promote fat metabolism, and reduce fat accumulation in the liver.

[0016] On the other hand, an embodiment of the present invention provides a method for preparing a fish fat regulator, comprising the following steps: S1, dissolving citric acid in water, adding porous activated carbon, and ultrasonically dispersing for 2-10 hours; then adding phosphoric acid, bile acid and linolenic acid, and ultrasonically dispersing for 2-10 hours; in this step, porous activated carbon is used as a carrier, the acidic raw material is loaded on the carrier, and then coated with cyclodextrin, which can avoid the premature release of the acidic raw material in the water.

[0017] S2, adding cyclodextrin to the solution system of step S1, stirring evenly, standing at room temperature for 1-2 hours, freeze-drying, grinding, and obtaining powder;

[0018] S3, mixing gelatin with water, heating, stirring, then adding the powder, L-carnitine and choline of step S2, stirring evenly, spray granulation, and obtaining granules; in this step, L-carnitine and choline are used as the third layer core, and then coated with gelatin to separate the acidic raw materials and the alkaline raw materials to avoid adverse reactions between the two types of raw materials.

[0019] S4, adding water to the remaining raw materials and the granules from step S3, mixing evenly, granulating, and drying.

[0020] In the last step, corn flour is used as a binder to bond the granules of step S3 and the remaining fish bone powder, hawthorn powder, and cicada pupa powder together, and then granulated by extrusion granulation or other methods to obtain the final regulator, which can be mixed with the finished granular feed, mixed with the homemade biological feed, or fed alone according to actual conditions.

[0021] In some embodiments of the present invention, in step S2, the particle size of the powder is 100-200 nm.

[0022] In some embodiments of the present invention, in step S3, the particle size of the particulate matter is 100-200 um.

[0023] In some embodiments of the present invention, in step S3, the heating temperature is 50-60°C.

[0024] In some embodiments of the present invention, the freeze-drying temperature in step S2 is -10°C-0°C.

[0025] In some embodiments of the present invention, in steps S2 and S3, the stirring rate is 100-200 rpm.

[0026] Compared with the prior art, the embodiments of the present invention have at least the following advantages or beneficial effects:

[0027] The regulator provided by the present invention comprises a wall material and a core material, wherein the core material is an active ingredient, and the core material having the active ingredient is wrapped by the wall material to prevent the active ingredient from volatilizing. When the regulator is put into water for feeding, the outer wall material can protect the core material to prevent the active ingredient of the core material from dissolving into the water and being eaten by fish, and when the regulator enters the body of the fish, the wall material on the surface dissolves and releases the active ingredient. Under the wrapping effect of the wall material, the utilization rate of the active ingredient can be improved.

[0028] The regulator of the present invention uses porous activated carbon as a carrier, and under the action of ultrasonic dispersion, phosphoric acid, bile acid and linolenic acid are loaded on the surface of the porous activated carbon. Subsequently, under the coating action of cyclodextrin, a core-shell structure is formed in which the outer layer is cyclodextrin and the core material is phosphoric acid, bile acid and linolenic acid. Subsequently, secondary coating is performed, and L-carnitine and choline are coated on the surface of cyclodextrin by gelatin. Through two coatings with different wall materials, the acidic raw materials and the alkaline raw materials are separated to avoid the two types of raw materials from reacting and inactivating. Subsequently, other raw materials are physically bonded on the surface of the gelatin layer to form a multi-layer core-shell structure. During feeding, after the regulator is put into water, the outermost layer of corn flour and the like swells first to release fragrance to attract fish to eat, and then the gelatin layer swells to soften the entire regulator particles, which is convenient for fish to eat. After entering the body of the fish, the cyclodextrin layer dissolves to release effective components. Under the action of the effective components, the metabolism of fat in the fish body is regulated to avoid fat accumulation in the liver. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be described clearly and completely below. If the specific conditions are not specified in the embodiments, they are carried out according to conventional conditions or conditions recommended by the manufacturer. If the manufacturer of the reagents or instruments used is not specified, they are all conventional products that can be purchased commercially.

[0030] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to specific embodiments.

[0031] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0032] Example 1

[0033] Prepare the raw materials according to the following ratios

[0034] Wall material: 5 parts of gelatin and 5 parts of cyclodextrin;

[0035] Core material: 5 parts of porous activated carbon, 5 parts of citric acid, 1 part of phosphoric acid, 5 parts of L-carnitine, 5 parts of choline, 10 parts of bile acid, 10 parts of linolenic acid, 1 part of earthworm powder, 2 parts of corn flour, 2 parts of fish bone powder, 2 parts of hawthorn powder, and 2 parts of cicada pupa powder.

[0036] Preparation process:

[0037] S1, at room temperature, add an appropriate amount of water to citric acid to dissolve it, then add porous activated carbon, and ultrasonically disperse it for 10 hours; then add phosphoric acid, bile acid and linolenic acid, and ultrasonically disperse it for 10 hours;

[0038] S2, adding cyclodextrin to the solution system of step S1, stirring at 200 rpm for 5 h, then standing at room temperature for 1 h, freeze-drying at -10°C, grinding, and sieving to obtain a powder with an average particle size of 200 nm;

[0039] S3, mixing gelatin with water, heating at 60°C, stirring at 200 rpm, then adding the powder, L-carnitine and choline of step S2, stirring evenly, and spray granulating to obtain particles with a particle size of 100 um;

[0040] S4, adding water to corn flour, fish bone powder, hawthorn powder, cicada pupa powder and the granules of step S3, mixing evenly, granulating, and drying to obtain a regulator.

[0041] Example 2

[0042] Prepare the raw materials according to the following ratios

[0043] Wall material: 8 parts of gelatin and 8 parts of cyclodextrin;

[0044] Core material: 10 parts of porous activated carbon, 5 parts of citric acid, 5 parts of phosphoric acid, 5 parts of L-carnitine, 5 parts of choline, 10 parts of bile acid, 10 parts of linolenic acid, 2 parts of earthworm powder, 2 parts of corn flour, 2 parts of fish bone powder, 2 parts of hawthorn powder, and 2 parts of cicada pupa powder.

[0045] Preparation process:

[0046] S1, at room temperature, add an appropriate amount of water to citric acid to dissolve it, then add porous activated carbon, and ultrasonically disperse it for 10 hours; then add phosphoric acid, bile acid and linolenic acid, and ultrasonically disperse it for 10 hours;

[0047] S2, adding cyclodextrin to the solution system of step S1, stirring at 200 rpm for 5 h, then standing at room temperature for 1 h, freeze-drying at -10°C, grinding, and sieving to obtain a powder with an average particle size of 200 nm;

[0048] S3, mixing gelatin with water, heating at 60° C., stirring at 200 rpm, then adding the powder, L-carnitine and choline of step S2, stirring evenly, and spray granulating to obtain particles with a particle size of 200 μm;

[0049] S4, adding water to corn flour, fish bone powder, hawthorn powder, cicada pupa powder and the granules of step S3, mixing evenly, granulating, and drying to obtain a regulator.

[0050] Example 3

[0051] Prepare the raw materials according to the following ratios

[0052] Wall material: 10 parts of gelatin and 5 parts of cyclodextrin;

[0053] Core material: 8 parts of porous activated carbon, 5 parts of citric acid, 3 parts of phosphoric acid, 3 parts of L-carnitine, 5 parts of choline, 8 parts of bile acid, 8 parts of linolenic acid, 2 parts of earthworm powder, 2 parts of corn flour, 1 part of fish bone powder, 1 part of hawthorn powder, and 1 part of cicada pupa powder.

[0054] Preparation process:

[0055] S1, at room temperature, add an appropriate amount of water to citric acid to dissolve it, then add porous activated carbon and ultrasonically disperse it for 5 hours; then add phosphoric acid, bile acid and linolenic acid and ultrasonically disperse it for 2 hours;

[0056] S2, adding cyclodextrin to the solution system of step S1, stirring at 200 rpm for 5 h, then standing at room temperature for 1 h, freeze-drying at -10°C, grinding, and sieving to obtain a powder with an average particle size of 200 nm;

[0057] S3, mixing gelatin with water, heating at 60°C, stirring at 200 rpm, then adding the powder, L-carnitine and choline of step S2, stirring evenly, and spray granulating to obtain particles with a particle size of 100 um;

[0058] S4, adding water to corn flour, fish bone powder, hawthorn powder, cicada pupa powder and the granules of step S3, mixing evenly, granulating, and drying to obtain a regulator.

[0059] Example 4

[0060] Prepare the raw materials according to the following ratios

[0061] Wall material: 5 parts of gelatin and 10 parts of cyclodextrin;

[0062] Core material: 8 parts of porous activated carbon, 1 part of citric acid, 5 parts of phosphoric acid, 1 part of L-carnitine, 5 parts of choline, 5 parts of bile acid, 10 parts of linolenic acid, 1 part of earthworm powder, 2 parts of corn flour, 2 parts of fish bone powder, 2 parts of hawthorn powder, and 2 parts of cicada pupa powder.

[0063] Preparation process:

[0064] S1, at room temperature, add an appropriate amount of water to citric acid to dissolve it, then add porous activated carbon, and ultrasonically disperse it for 10 hours; then add phosphoric acid, bile acid and linolenic acid, and ultrasonically disperse it for 10 hours;

[0065] S2, adding cyclodextrin to the solution system of step S1, stirring at 200 rpm for 5 hours, then standing at room temperature for 1 hour, freeze-drying at -5°C, grinding, and sieving to obtain a powder with an average particle size of 200 nm;

[0066] S3, mixing gelatin with water, heating at 60°C, stirring at 200 rpm, then adding the powder, L-carnitine and choline of step S2, stirring evenly, and spray granulating to obtain particles with a particle size of 100 um;

[0067] S4, adding water to corn flour, fish bone powder, hawthorn powder, cicada pupa powder and the granules of step S3, mixing evenly, granulating, and drying to obtain a regulator.

[0068] Example 5

[0069] Prepare the raw materials according to the following ratios

[0070] Wall material: 10 parts of gelatin and 10 parts of cyclodextrin;

[0071] Core material: 5 parts of porous activated carbon, 5 parts of citric acid, 5 parts of phosphoric acid, 5 parts of L-carnitine, 5 parts of choline, 10 parts of bile acid, 10 parts of linolenic acid, 2 parts of earthworm powder, 2 parts of corn flour, 2 parts of fish bone powder, 2 parts of hawthorn powder, and 2 parts of cicada pupa powder.

[0072] Preparation process:

[0073] S1, at room temperature, add an appropriate amount of water to citric acid to dissolve it, then add porous activated carbon, and ultrasonically disperse it for 10 hours; then add phosphoric acid, bile acid and linolenic acid, and ultrasonically disperse it for 10 hours;

[0074] S2, adding cyclodextrin to the solution system of step S1, stirring at 200 rpm for 5 h, then standing at room temperature for 1 h, freeze-drying at 0° C., grinding, and sieving to obtain a powder with an average particle size of 200 nm;

[0075] S3, mixing gelatin with water, heating at 60°C, stirring at 200 rpm, then adding the powder, L-carnitine and choline of step S2, stirring evenly, and spray granulating to obtain particles with a particle size of 100 um;

[0076] S4, adding water to corn flour, fish bone powder, hawthorn powder, cicada pupa powder and the granules of step S3, mixing evenly, granulating, and drying to obtain a regulator.

[0077] Comparative Example 1

[0078] The difference from Example 1 is that in this example, the wall material gelatin and cyclodextrin are not contained; the proportions of the other raw materials are the same as those in Example 1; and the preparation method is as follows:

[0079] S1, at room temperature, add an appropriate amount of water to citric acid to dissolve it, then add porous activated carbon, and ultrasonically disperse it for 10 hours; then add phosphoric acid, bile acid and linolenic acid, and ultrasonically disperse it for 10 hours;

[0080] S2, freeze-dried at -10 °C, ground, and sieved;

[0081] S3, heating water to 60°C, stirring at 200 rpm, then adding the powder, L-carnitine and choline from step S2, stirring evenly, and spray granulating to obtain particles with a particle size of 200 um;

[0082] S4, adding water to corn flour, fish bone powder, hawthorn powder, cicada pupa powder and the granules of step S3, mixing evenly, granulating, and drying to obtain a regulator.

[0083] Comparative Example 2

[0084] The difference from Example 1 is that in this comparative example, only cyclodextrin as a wall material is contained, gelatin is not contained, and the proportions of the other raw materials are the same as those in Example 1; the preparation method is as follows:

[0085] S1, at room temperature, add an appropriate amount of water to citric acid to dissolve it, then add porous activated carbon, and ultrasonically disperse it for 10 hours; then add phosphoric acid, bile acid and linolenic acid, and ultrasonically disperse it for 10 hours;

[0086] S2, adding a portion of cyclodextrin to the solution system of step S1, stirring at 200 rpm for 5 hours, then standing at room temperature for 1 hour, freeze-drying at -10°C, grinding, and sieving to obtain a powder with an average particle size of 200 nm;

[0087] S3, mixing another portion of cyclodextrin with water, heating at 60°C, stirring at 200 rpm, then adding the powder, L-carnitine and choline from step S2, stirring evenly, and spray granulating to obtain particles with a particle size of 200 um;

[0088] S4, adding water to corn flour, fish bone powder, hawthorn powder, cicada pupa powder and the granules of step S3, mixing evenly, granulating, and drying to obtain a regulator.

[0089] Comparative Example 3

[0090] The difference from Example 1 is that in this comparative example, only wall material gelatin is contained, cyclodextrin is not contained, and the proportions of the other raw materials are the same as those in Example 1; the preparation method is as follows:

[0091] S1, at room temperature, add an appropriate amount of water to citric acid to dissolve it, then add porous activated carbon, and ultrasonically disperse it for 10 hours; then add phosphoric acid, bile acid and linolenic acid, and ultrasonically disperse it for 10 hours;

[0092] S2, adding a portion of gelatin to the solution system of step S1, heating to 60°C, stirring at 200 rpm for 5 hours, then standing at room temperature for 1 hour, freeze-drying at -10°C, grinding, and sieving to obtain a powder with an average particle size of 200 nm;

[0093] S3, mixing another portion of gelatin with water, heating at 60°C, stirring at 200 rpm, then adding the powder, L-carnitine and choline from step S2, stirring evenly, and spray granulating to obtain particles with a particle size of 200 um;

[0094] S4, adding water to corn flour, fish bone powder, hawthorn powder, cicada pupa powder and the granules of step S3, mixing evenly, granulating, and drying to obtain a regulator.

[0095] Experimental example

[0096] 1. Physical properties of the regulator

[0097] A small amount of the regulators of Examples 1-5 and Comparative Examples 1-3 were respectively put into water. After 5 minutes, the changes of each regulator in the water were observed. The results are shown in Table 1.

[0098] Table 1 Physical properties of each regulator

[0099] change Example 1 There is obvious expansion, the particles become larger, and the particles are not broken or crushed Example 2 There is obvious expansion, the particles become larger, and the particles are not broken or crushed Example 3 There is obvious expansion, the particles become larger, and the particles are not broken or crushed Example 4 There is obvious expansion, the particles become larger, and the particles are not broken or crushed Example 5 There is obvious expansion, the particles become larger, and the particles are not broken or crushed Comparative Example 1 No expansion, particles spread out, broken Comparative Example 2 No expansion, complete particles Comparative Example 3 There is obvious expansion, the particles become larger, and some particles are broken

[0100] It can be concluded from the above Table 1 that the regulators provided by Examples 1-5 of the present invention can swell and soften after being put into water, and can maintain the integrity of the particles, and the effective ingredients are not easily lost. In Comparative Example 1, it does not have a core-shell structure. When the regulator is put into water, the effective ingredients dissolve in the water, causing the particles to scatter and break; in Comparative Example 2, it does not add gelatin as a wall material, but is wrapped by cyclodextrin. After being put into water, there is no obvious swelling phenomenon. Under the action of cyclodextrin, the integrity of the particles can be maintained. In Comparative Example 3, it does not add cyclodextrin, but is only wrapped by gelatin. It swells in water, but lacks the core-shell structure coated with cyclodextrin, causing some particles to scatter.

[0101] 2. Effects of various regulators on fish

[0102] Nine cages of the same size were set up in the same pond, and 450 healthy grass carp larvae with similar weights were randomly selected and evenly put into the cages. Each regulator was mixed with grass carp feed at a ratio of 6%, and fed 3 times a day (8:00, 12:00, 16:00), with a daily feeding amount of 1% of the fish body weight. During the feeding period, normal oxygenation was performed to ensure that the pond water temperature was around 25°C. The disease status of the fish was recorded every day. After one month of feeding, the average weight of the fish in each cage was counted. After two months of feeding, the number of deaths and the number of illnesses were counted. The results are shown in Table 2.

[0103] The grass carp feed fed daily is high-protein feed, which consists of 1 part of fish meal, 2 parts of soybean meal, 2 parts of vegetable cake, 2 parts of corn DDGS and 1 part of rice bran. It is first mixed in a blender for 5 minutes, and then 1 part of flour and 1 part of soybean oil are added and mixed for 10 minutes. A steam generator is used to pass steam into the conditioner to add moisture and mature the feed raw materials. The Shanghai Shen De SDPM pellet machine is used for pelleting. The diameter of the hard pellet feed is 2mm, and it is placed in a cool place to dry naturally before use.

[0104] Table 2 Growth of fish in each cage

[0105] Initial average weight (g) Final average weight (g) Weight gain rate (%) Number of cases Number of deaths Example 1 501.3 1258.76 151.1 0 0 Example 2 501.2 1251.99 149.8 0 0 Example 3 502.1 1261.77 151.3 0 0 Example 4 501.8 1247.47 148.6 0 0 Example 5 501.7 1258.26 150.8 0 0 Comparative Example 1 501.4 1111.60 121.7 6 4 Comparative Example 2 502.1 1096.08 118.3 5 5 Comparative Example 3 502.3 1102.54 119.5 4 6 Blank group 501.4 1054.44 110.3 8 9

[0106] As can be seen from Table 2 above, the weight gain rate can reach more than 150% when the regulators of Examples 1-5 are used in combination with high-protein feed, while the weight gain effect is poor after using the regulator of the comparative example, but it has a certain weight gain effect compared with the blank group. Secondly, during the feeding process, the fish of Examples 1-5 did not become ill or die, but in the comparative example and the blank group, there were deaths, indicating that the regulator of the present invention can enhance the immunity of fish and reduce the incidence and death of fish. The regulator of comparative example 1 has no protection of wall materials. When the regulator is put into the water body, it is easily dissolved in the water, and the effective ingredients consumed by the fish body are reduced, and its effect of regulating fat metabolism is correspondingly deteriorated.

[0107] The embodiments described above are part of the embodiments of the present invention, rather than all of the embodiments. The detailed description of the embodiments of the present invention is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Claims

1. A fish fat regulator, characterized in that: It comprises wall materials and core materials. The core materials comprise the following raw materials by weight: 5-10 parts of porous activated carbon, 1-5 parts of citric acid, 1-5 parts of phosphoric acid, 1-5 parts of L-carnitine, 1-5 parts of choline, 5-10 parts of bile acid, 5-10 parts of linolenic acid, 1-2 parts of earthworm powder and 1-2 parts of corn flour.

2. The fish fat regulator according to claim 1, characterized in that The core material further comprises 1-2 parts of fish bone powder, 1-2 parts of hawthorn powder and 1-2 parts of cicada pupa powder by weight.

3. The fish fat regulator according to claim 2, characterized in that The wall material comprises the following raw materials by weight: 5-10 parts of gelatin and 5-10 parts of cyclodextrin.

4. The fish fat regulator according to claim 3, characterized in that The wall material comprises the following raw materials by weight: 5 parts of gelatin and 5 parts of cyclodextrin; The core material includes the following raw materials by weight: 5 parts of porous activated carbon, 5 parts of citric acid, 1 part of phosphoric acid, 5 parts of L-carnitine, 5 parts of choline, 10 parts of bile acid, 10 parts of linolenic acid, 1 part of earthworm powder, 2 parts of corn flour, 2 parts of fish bone powder, 2 parts of hawthorn powder, and 2 parts of cicada pupa powder.

5. A method for preparing the fish fat regulator according to claim 4, characterized in that: The following steps are involved: S1, dissolve citric acid in water, then add porous activated carbon, and disperse by ultrasonic for 2-10 hours; then add phosphoric acid, bile acid and linolenic acid, and disperse by ultrasonic for 2-10 hours; S2, adding cyclodextrin to the solution system of step S1, stirring evenly, standing at room temperature for 1-2 hours, freeze-drying, grinding, and obtaining powder; S3, mixing gelatin and water, heating, stirring, then adding the powder, L-carnitine and choline of step S2, stirring evenly, spraying granulation, and obtaining granules; S4, adding water to the remaining raw materials and the granules from step S3, mixing evenly, granulating, and drying.

6. The method for preparing the fish fat regulator according to claim 5, characterized in that: In the step S2, the particle size of the powder is 100-200 nm.

7. The method for preparing the fish fat regulator according to claim 5, characterized in that: In the step S3, the particle size of the particles is 100-200 um.

8. The method for preparing the fish fat regulator according to claim 5, characterized in that: In step S3, the heating temperature is 50-60°C.

9. The method for preparing the fish fat regulator according to claim 5, characterized in that: The freeze-drying temperature in step S2 is -10°C to 0°C.

10. The method for preparing the fish fat regulator according to claim 5, characterized in that: In the steps S2 and S3, the stirring rate is 100-200 rpm.