A method for preparing oyster peptide for enhancing immunity

Abstract

The invention discloses a method for preparing an oyster peptide for enhancing immunity, and relates to the technical field of oyster peptide preparation. The method comprises a base, wherein the upper end of the base is symmetrically provided with support columns, the upper end of the support columns is provided with a cover plate, a driving member is provided at the middle position of the upper end of the cover plate, the output end of the driving member penetrates and extends to the lower end of the cover plate, and a rotating block is provided at the output end of the driving member, a positioning component is provided at the lower end of the rotating block, an extraction cylinder is provided at the lower end of the positioning component, and the extraction cylinder is fixed by the positioning component; in the method for preparing an oyster peptide for enhancing immunity, two connecting tubes are located between a grid plate and a fixed plate, and are used for conducting liquid inside the grid plate and allowing the liquid to enter the fixed cylinder, so as to perform secondary screening on the liquid, thereby ensuring good interaction between the solvent and target components in the oyster, avoiding poor stratification effect caused by poor selectivity, and ensuring overall purity and quality.

Description

Technical Field

[0001] The invention relates to a technology for preparing oyster peptides, and in particular to a method for preparing oyster peptides for enhancing immunity. Background Art

[0002] Oyster peptide is the oyster extract with the highest nutritional value and can be well absorbed by the human body. Oyster peptide is not only rich in protein, vitamins, trace elements and taurine in a suitable proportion, but also contains a variety of nutrients unique to marine organisms. The natural taurine in oysters has been confirmed in medicine to have the functions of lowering blood lipids, inhibiting platelet aggregation, and improving symptoms of hyperglycemia. Therefore, it has a good therapeutic effect in the treatment of diseases such as arteriosclerosis, coronary heart disease, angina pectoris, hyperlipidemia, arrhythmia, diabetes, chronic hepatitis, etc. At the same time, oyster peptide also has a certain effect in fighting cancer and preventing the spread of cancer cells.

[0003] The preparation process of oyster peptides involves an extraction process. However, the existing extraction equipment has a low overall extraction efficiency and takes a long time, which may lead to uneven extraction and affect subsequent processing operations. At the same time, during the extraction process, larger particles are likely to remain inside. In a complex mixture, the extraction process may not be able to selectively separate the target components, resulting in the mixing of impurities, so that the extracted product may contain more by-products or impurities, affecting the final purity and quality. Therefore, a method for preparing oyster peptides that enhance immunity was developed. Summary of the invention

[0004] The purpose of the present invention is to provide a method for preparing oyster peptides for enhancing immunity, so as to solve the above-mentioned shortcomings in the prior art.

[0005] In order to achieve the above object, the present invention provides the following technical solution: a method for preparing oyster peptides for enhancing immunity, comprising the following preparation steps:

[0006] S1, the fresh oyster meat was crushed and pulped to obtain oyster slurry, and the total protein content in the oyster slurry was measured by Kjeldahl nitrogen determination;

[0007] S2, add 25 times the mass of deionized water of the oyster slurry, heat to 50°C, add 2.5 mol / L hydrochloric acid solution, and adjust the pH to 4.0;

[0008] S3, adding 3.0% of the protein mass of oyster slurry composite protease and mixing evenly;

[0009] S4, pouring the mixture into an extractor, adjusting the temperature and pressure for extraction;

[0010] S5, heating to 90 ° C, inactivating the enzyme for 20 minutes to obtain an enzymatic solution;

[0011] S6, placing the enzymatic hydrolyzate in a centrifugal device for centrifugal separation, collecting the liquid phase, and obtaining oyster peptide;

[0012] In S4, the extractor includes a base, a support column is symmetrically arranged at the upper end of the base, a cover plate is arranged at the upper end of the support column, a driving member is arranged at the middle position of the upper end of the cover plate, the output end of the driving member passes through and extends to the lower end of the cover plate, and a rotating block is arranged at the output end of the driving member, a positioning assembly is arranged at the lower end of the rotating block, an extraction cylinder is arranged at the lower end of the positioning assembly, and the extraction cylinder is fixed by the positioning assembly;

[0013] The positioning assembly includes a sleeve, the inner cavity of the sleeve is provided with a slide groove, the inner wall of the slide groove is slidably mounted with a slider, the upper end of the slider is provided with a clamping block, and the upper end of the clamping block is connected to the lower end of the rotating block;

[0014] A telescopic rod is arranged at the middle position of the lower end of the slider, a circular ring is slidably mounted on the outer surface of the telescopic rod, a plurality of groups of clamping blocks are rotatably mounted on the outer surface of the circular ring, and the plurality of groups of clamping blocks are evenly distributed on the outer surface of the circular ring;

[0015] At the same time, a fixing block is provided at the lower end of the telescopic rod, and a through hole corresponding to the clamping block is opened at the end of the fixing block, the inner wall of the through hole is slidably connected to the outer surface of the clamping block, and the clamping block penetrates and extends to the outside of the sleeve, and an elastic member is sleeved on the outer surface of the telescopic rod, one end of the elastic member is connected to the ring, and the other end is connected to the upper end of the fixing block, and a connecting block is provided at the lower end of the fixing block;

[0016] The filter assembly is mounted on the inner wall of the extraction cylinder, and the oyster liquid is filtered through the filter assembly.

[0017] As a further optimization solution of the present invention, a rotating rod is provided at the middle position of the lower end of the rotating block, and a protective plate is slidably mounted on the outer surface of the rotating rod, and the protective plate is used to limit the extraction cylinder.

[0018] As a further optimization solution of the present invention, a base is rotatably mounted on the lower end of the rotating rod, the lower end of the base is connected to the base, and the upper end of the base is in contact with the lower end of the extraction cylinder.

[0019] As a further optimization solution of the present invention, a support plate is provided at the upper end of the inner wall of the extraction cylinder, a docking block is provided at the upper end of the support plate, and the upper end of the docking block is fitted with the lower end of the connecting block.

[0020] As a further optimization solution of the present invention, a mesh plate is provided on the inner wall of the extraction cylinder, and a fixing plate is provided on the inner wall of the extraction cylinder and below the mesh plate.

[0021] As a further optimization solution of the present invention, the filter assembly includes a fixed cylinder connected to the fixed plate, the outer surface of the fixed cylinder is symmetrically connected with a connecting pipe, and a limit plate is arranged at the upper end of the fixed cylinder.

[0022] As a further optimization solution of the present invention, a power piece is provided at the lower end of the limit plate, a movable rod is provided at the output end of the power piece, and a baffle is rotatably mounted on the outer surface of the movable rod.

[0023] As a further optimization solution of the present invention, a plurality of groups of screening plates are arranged at the lower end of the baffle plate, and the plurality of groups of screening plates are evenly distributed at the lower end of the baffle plate.

[0024] As a further optimization scheme of the present invention, the lower end of the fixed cylinder is connected to a guide tube, and the cross-section of the inner cavity of the guide tube is trapezoidal. A pressing block is provided at the lower end of the movable rod, and the outer surface of the pressing block is slidably connected to the inner wall of the guide tube.

[0025] Compared with the prior art, the method for preparing an oyster peptide for enhancing immunity provided by the present invention has the following beneficial effects: when the fixed block moves upward, the elastic member is squeezed, and when moving, the clamping block is driven to expand outward in cooperation with the through hole until the connecting block and the docking block are fitted, and then the clamping block is restored to its initial position by the action of the elastic member, thereby fixing the docking block; at the same time, the clamping block is connected to the rotating block by the clamping block, so that the entire positioning assembly rotates around the rotating block, thereby shaking the extraction cylinder installed on the positioning assembly, so that the liquid inside it is fully mixed.

[0026] Two connecting tubes are located between the grid plate and the fixed plate, and are used to conduct the liquid inside the grid plate and allow it to enter the fixed cylinder for secondary screening, ensuring good interaction between the solvent and the target components in the oysters, avoiding poor stratification due to poor selectivity, and ensuring overall purity and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0028] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0029] Figure 2 A schematic diagram of the structure of a positioning component provided in an embodiment of the present invention;

[0030] Figure 3 A first cross-sectional view of the internal structure of a positioning assembly provided by an embodiment of the present invention;

[0031] Figure 4 A second cross-sectional view of the internal structure of the positioning assembly provided by an embodiment of the present invention;

[0032] Figure 5 A schematic diagram of the structure of an extraction cartridge provided by an embodiment of the present invention;

[0033] Figure 6 A cross-sectional view of the internal structure of an extraction cartridge provided by an embodiment of the present invention;

[0034] Figure 7 A schematic diagram of the structure of a filter assembly provided in an embodiment of the present invention;

[0035] Figure 8 A cross-sectional view of the internal structure of a filter assembly provided in an embodiment of the present invention.

[0036] Description of reference numerals:

[0037] 1. Base; 2. Positioning assembly; 3. Filter assembly; 11. Support column; 12. Cover plate; 13. Drive member; 14. Rotating block; 15. Base; 16. Rotating rod; 17. Protective plate; 18. Extraction cylinder; 181. Support plate; 182. Docking block; 183. Grid plate; 184. Fixed plate; 21. Sleeve; 211. Slide groove; 22. Slider; 23. Telescopic rod; 231. Elastic member; 24. Ring; 25. Clamping block; 26. Fixed block; 261. Through hole; 27. Connecting block; 28. Clamping block; 31. Fixed cylinder; 311. Limiting plate; 32. Connecting pipe; 33. Power member; 34. Baffle; 35. Screening plate; 36. Movable rod; 37. Pressing block; 38. Export pipe. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0039] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] Example 1: A method for preparing an oyster peptide for enhancing immunity, comprising the following preparation steps:

[0041] S1, the fresh oyster meat was crushed and pulped to obtain oyster slurry, and the total protein content in the oyster slurry was measured by Kjeldahl nitrogen determination;

[0042] S2, add 25 times the mass of deionized water of the oyster slurry, heat to 50°C, add 2.5 mol / L hydrochloric acid solution, and adjust the pH to 4.0;

[0043] S3, adding 3.0% of the protein mass of oyster slurry composite protease and mixing evenly;

[0044] S4, pouring the mixture into an extractor, adjusting the temperature and pressure for extraction;

[0045] S5, heating to 90 ° C, inactivating the enzyme for 20 minutes to obtain an enzymatic solution;

[0046] S6, placing the enzymatic hydrolyzate in a centrifugal device for centrifugal separation, collecting the liquid phase, and obtaining oyster peptide;

[0047] Example 2: Please refer to Figure 1-Figure 8 This embodiment proposes another technical solution based on the embodiment 1: the extraction machine includes a base including a base 1, the upper end of the base 1 is symmetrically provided with a support column 11, the upper end of the support column 11 is provided with a cover plate 12, a driving member 13 is provided at the middle position of the upper end of the cover plate 12, the output end of the driving member 13 passes through and extends to the lower end of the cover plate 12, and at the same time, a rotating block 14 is provided at the output end of the driving member 13, a positioning component 2 is provided at the lower end of the rotating block 14, and an extraction cylinder 18 is provided at the lower end of the positioning component 2, and the extraction cylinder 18 is fixed by the positioning component 2.

[0048] In this solution, the driving member 13 is a device with power output such as a motor, and is connected to an external control device. When the driving member 13 is started, it synchronously drives the rotating block 14 arranged at its output end to rotate, wherein a plurality of groups of extension rods are evenly arranged on the outer surface of the rotating block 14, and the lower end of each extension rod is connected to a positioning component 2, so that when the rotating block 14 rotates, the positioning component 2 is synchronously driven to rotate.

[0049] The control device can select a single-chip microcomputer as the control end. In this embodiment, the single-chip microcomputer is a typical embedded microcontroller (Micro controller unit), which is composed of an arithmetic unit, a controller, a memory, an input and output device, etc., which is equivalent to a microcomputer. Compared with the general-purpose microprocessor used in personal computers, it emphasizes self-supply (no external hardware) and cost saving. Its biggest advantage is that it is small in size and can be placed inside the instrument, but it has a small storage capacity, a simple input and output interface, and low functional consumption.

[0050] Furthermore, the positioning assembly 2 includes a sleeve 21, the inner cavity of the sleeve 21 is provided with a slide groove 211, the inner wall of the slide groove 211 is slidably mounted with a slider 22, the upper end of the slider 22 is provided with a clamping block 28, and the upper end of the clamping block 28 is connected to the lower end of the rotating block 14.

[0051] In this embodiment, when the sleeve 21 moves, it can synchronously drive the fixed block 26 to move, and at the same time cooperate with the sliding groove 211 opened on the inner wall of the sleeve 21 to limit the slider 22, so that the sleeve 21 is in a stable state when moving, and the sleeve 21 is limited.

[0052] The clamping block 28 is connected to the rotating block 14 so that the entire positioning assembly 2 rotates around the rotating block 14, thereby shaking the extraction cylinder 18 installed on the positioning assembly 2 to fully mix the liquid inside.

[0053] Furthermore, a telescopic rod 23 is provided in the middle position of the lower end of the slider 22 , a circular ring 24 is slidably mounted on the outer surface of the telescopic rod 23 , a plurality of groups of clamping blocks 25 are rotatably mounted on the outer surface of the circular ring 24 , and the plurality of groups of clamping blocks 25 are evenly distributed on the outer surface of the circular ring 24 .

[0054] Specifically, the telescopic rod is composed of a round rod and a cylinder, and the inner wall of the cylinder is slidably connected to the outer surface of the round rod. When the ring 24 moves, the clamping block 25 installed on its outer surface is synchronously driven to move, thereby causing the clamping block 25 to move toward the middle or expand to both sides.

[0055] Furthermore, a fixing block 26 is provided at the lower end of the telescopic rod 23, and a through hole 261 corresponding to the clamping block 25 is opened at the end of the fixing block 26. The inner wall of the through hole 261 is slidably connected to the outer surface of the clamping block 25, and the clamping block 25 passes through and extends to the outside of the sleeve 21. An elastic member 231 is sleeved on the outer surface of the telescopic rod 23, one end of the elastic member 231 is connected to the ring 24, and the other end is connected to the upper end of the fixing block 26, and a connecting block 27 is provided at the lower end of the fixing block 26.

[0056] Specifically, the elastic member 231 is an elastic component such as a spring, which is used to support the ring 24. When the fixing block 26 moves upward, the elastic member 231 is squeezed, and when moving, it cooperates with the through hole 261 to drive the clamping block 25 to expand outward until the connecting block 27 is fitted with the docking block 182. The clamping block 25 is restored to its initial position by the force of the elastic member 231, thereby fixing the docking block 182.

[0057] Furthermore, a rotating rod 16 is provided at the middle position of the lower end of the rotating block 14 , and a protective plate 17 is slidably mounted on the outer surface of the rotating rod 16 , and the protective plate 17 is used to limit the extraction cylinder 18 .

[0058] Specifically, a slot corresponding to the extraction cylinder 18 is formed at the end of the protection plate 17, and the inner wall of the slot is slidably connected to the outer surface of the extraction cylinder 18, so that when the liquid inside the extraction cylinder 18 is mixed, the extraction cylinder 18 is further fixed to ensure the overall stability.

[0059] Furthermore, a base 15 is rotatably mounted on the lower end of the rotating rod 16 , the lower end of the base 15 is connected to the base 1 , and the upper end of the base 15 is in contact with the lower end of the extraction cylinder 18 .

[0060] Specifically, a guide groove is provided at the upper end of the base 15, and the inner wall of the guide groove is slidably connected to the lower end of the extraction cylinder 18, which is used to limit the extraction cylinder 18 to ensure that the extraction cylinder 18 does not fall off when rotating.

[0061] Furthermore, a support plate 181 is provided at the upper end of the inner wall of the extraction cylinder 18 , a docking block 182 is provided at the upper end of the support plate 181 , and the upper end of the docking block 182 is fitted with the lower end of the connection block 27 .

[0062] Specifically, a plurality of flow grooves are provided at the end of the support plate 181 so that the liquid can enter the extraction cylinder 18 through the flow grooves, and a docking block 182 is provided at the upper end thereof, which is engaged with the positioning assembly 2 through the docking block 182, thereby ensuring the stability of the extraction cylinder 18.

[0063] Furthermore, a mesh plate 183 is disposed on the inner wall of the extraction cylinder 18 , and a fixing plate 184 is disposed on the inner wall of the extraction cylinder 18 and below the mesh plate 183 .

[0064] Specifically, the liquid is preliminarily screened by the mesh plate 183 to screen out larger particles in the liquid. At the same time, a groove is provided at the end of the fixed plate 184, and the inner wall of the groove is slidably connected to the outer surface of the fixed cylinder 31. The inner wall of the groove is provided with rubber or other sealing components.

[0065] Furthermore, the filter assembly 3 is mounted on the inner wall of the extraction cylinder 18, and the oyster liquid is filtered through the filter assembly 3. The filter assembly 3 includes a fixed cylinder 31 connected to the fixed plate 184, and the outer surface of the fixed cylinder 31 is symmetrically connected with a connecting pipe 32, and a limit plate 311 is provided at the upper end of the fixed cylinder 31.

[0066] In this embodiment, the two connecting tubes 32 are located between the grid plate 183 and the fixed plate 184, and are used to conduct the liquid inside them so that it enters the fixed cylinder 31, thereby performing secondary screening on it, ensuring that the solvent has a good interaction with the target components in the oysters, and avoiding poor stratification due to poor selectivity.

[0067] Furthermore, a power member 33 is provided at the lower end of the limit plate 311, a movable rod 36 is provided at the output end of the power member 33, and a baffle 34 is rotatably mounted on the outer surface of the movable rod 36. A plurality of screening plates 35 are provided at the lower end of the baffle 34, and the plurality of screening plates 35 are evenly distributed at the lower end of the baffle 34.

[0068] Specifically, the power member 33 is a device with a telescopic function such as an electric telescopic rod, and is connected to an external control device. When the power member 33 is started, it synchronously drives the movable rod 36 arranged at its output end to move.

[0069] The inner wall of the baffle 34 is rotatably connected to the outer surface of the movable rod 36, and is respectively located at both ends of the movable rod 36. The baffle 34 at one end away from the power member 33 is clamped with the inner wall of the fixed cylinder 31, thereby ensuring that the screening plate 35 will not shake during filtering.

[0070] Furthermore, the lower end of the fixed cylinder 31 is connected to a guide tube 38 , and the cross-section of the inner cavity of the guide tube 38 is trapezoidal. A pressing block 37 is provided at the lower end of the movable rod 36 , and the outer surface of the pressing block 37 is slidably connected to the inner wall of the guide tube 38 .

[0071] Specifically, when the movable rod 36 moves, the pressing block 37 arranged at its lower end is synchronously driven to move. At the same time, the outer surface of the pressing block 37 is provided with rubber and other components with sealing effect. Then, when the pressing block 37 moves downward as a whole, the inner wall of the gap between it and the outlet pipe 38 gradually increases, thereby facilitating the outlet of the liquid. When the pressing block 37 moves upward, it fits tightly with the inner wall of the outlet pipe 38 to ensure sealing.

[0072] Working principle: When the sleeve 21 moves, it can synchronously drive the fixed block 26 to move, and at the same time cooperate with the slide groove 211 opened on the inner wall of the sleeve 21 to limit the slider 22, so that the sleeve 21 is in a stable state when moving, and the sleeve 21 is limited; the clamping block 28 is connected with the rotating block 14, so that the entire positioning assembly rotates around the rotating block 14, thereby shaking the extraction cylinder 18 installed on the positioning assembly, so that the liquid inside is fully mixed; the two connecting pipes 32 are located between the grid plate 183 and The fixed plate 184 is used to conduct the liquid inside the grid plate 183 and the fixed plate 184, so that the liquid enters the fixed cylinder 31, thereby performing secondary screening on it; when the movable rod 36 moves, it simultaneously drives the pressing block 37 set at its lower end to move, and then when the pressing block 37 moves downward as a whole, the inner wall of the gap between it and the outlet pipe 38 gradually increases, thereby facilitating the outlet of the liquid, and when the pressing block 37 moves upward, it fits tightly against the inner wall of the outlet pipe 38, thereby ensuring sealing.

[0073] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A method for preparing an oyster peptide for enhancing immunity, characterized in that: The method comprises the following preparation steps: S1, the fresh oyster meat was crushed and pulped to obtain oyster slurry, and the total protein content in the oyster slurry was measured by Kjeldahl nitrogen determination; S2, add 25 times the mass of deionized water of oyster slurry, heat to 50°C, add 2.5 mol / L hydrochloric acid solution, and adjust the pH to 4.0; S3, adding 3.0% of the protein mass of oyster slurry composite protease and mixing evenly; S4, pouring the mixture into an extractor, adjusting the temperature and pressure for extraction; S5, heating to 90 ° C, inactivating the enzyme for 20 minutes to obtain an enzymatic solution; S6, placing the enzymatic hydrolyzate in a centrifugal device for centrifugal separation, collecting the liquid phase, and obtaining oyster peptide; In the S4, the extraction machine comprises a base, a support column (11) is symmetrically arranged at the upper end of the base, a cover plate (12) is arranged at the upper end of the support column (11), a driving member (13) is arranged at the middle position of the upper end of the cover plate (12), the output end of the driving member (13) passes through and extends to the lower end of the cover plate (12), and a rotating block (14) is arranged at the output end of the driving member (13), a positioning assembly is arranged at the lower end of the rotating block (14), an extraction cartridge (18) is arranged at the lower end of the positioning assembly, and the extraction cartridge (18) is fixed by the positioning assembly; The positioning assembly comprises a sleeve (21), an inner cavity of the sleeve (21) is provided with a slide groove (211), an inner wall of the slide groove (211) is slidably mounted with a slider (22), an upper end of the slider (22) is provided with a clamping block (28), and the upper end of the clamping block (28) is connected to the lower end of the rotating block (14); A telescopic rod (23) is provided at the middle position of the lower end of the sliding block (22); a circular ring (24) is slidably mounted on the outer surface of the telescopic rod (23); a plurality of groups of clamping blocks (25) are rotatably mounted on the outer surface of the circular ring (24); and the plurality of groups of clamping blocks (25) are evenly distributed on the outer surface of the circular ring (24); At the same time, a fixing block (26) is provided at the lower end of the telescopic rod (23), and a through hole (261) corresponding to the clamping block (25) is opened at the end of the fixing block (26), the inner wall of the through hole (261) is slidably connected to the outer surface of the clamping block (25), and the clamping block (25) passes through and extends to the outside of the sleeve (21), and an elastic member (231) is sleeved on the outer surface of the telescopic rod (23), one end of the elastic member (231) is connected to the ring (24), and the other end is connected to the upper end of the fixing block (26), and a connecting block (27) is provided at the lower end of the fixing block (26); A filter assembly is mounted on the inner wall of the extraction cylinder (18), and the oyster liquid is filtered through the filter assembly.

2. The method for preparing an oyster peptide for enhancing immunity according to claim 1, characterized in that: A rotating rod (16) is provided at the middle position of the lower end of the rotating block (14), and a protective plate (17) is slidably mounted on the outer surface of the rotating rod (16), wherein the protective plate (17) is used to limit the extraction cylinder (18).

3. The method for preparing an oyster peptide for enhancing immunity according to claim 2, characterized in that: A base (15) is rotatably mounted on the lower end of the rotating rod (16); the lower end of the base (15) is connected to the pedestal; and the upper end of the base (15) is in contact with the lower end of the extraction cylinder (18).

4. The method for preparing an oyster peptide for enhancing immunity according to claim 3, characterized in that: A support plate (181) is provided at the upper end of the inner wall of the extraction cylinder (18), a docking block (182) is provided at the upper end of the support plate (181), and the upper end of the docking block (182) is in contact with the lower end of the connection block (27).

5. The method for preparing an oyster peptide for enhancing immunity according to claim 4, characterized in that: The inner wall of the extraction cylinder (18) is provided with a mesh plate (183), and a fixing plate (184) is provided on the inner wall of the extraction cylinder (18) and below the mesh plate (183).

6. The method for preparing an oyster peptide for enhancing immunity according to claim 5, characterized in that: The filter assembly comprises a fixed cylinder (31) connected to the fixed plate (184), the outer surface of the fixed cylinder (31) is symmetrically connected to a connecting pipe (32), and a limit plate (311) is provided at the upper end of the fixed cylinder (31).

7. The method for preparing an oyster peptide for enhancing immunity according to claim 6, characterized in that: A power piece (33) is provided at the lower end of the limiting plate (311), a movable rod (36) is provided at the output end of the power piece (33), and a baffle (34) is rotatably mounted on the outer surface of the movable rod (36).

8. The method for preparing an oyster peptide for enhancing immunity according to claim 7, characterized in that: A plurality of groups of screening plates (35) are arranged at the lower end of the baffle plate (34), and the plurality of groups of screening plates (35) are evenly distributed at the lower end of the baffle plate (34).

9. The method for preparing an oyster peptide for enhancing immunity according to claim 8, characterized in that: The lower end of the fixed cylinder (31) is connected to a guide tube (38), and the cross-section of the inner cavity of the guide tube (38) is trapezoidal. A pressing block (37) is provided at the lower end of the movable rod (36), and the outer surface of the pressing block (37) is slidably connected to the inner wall of the guide tube (38).

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