Processing method for reducing volatile basic nitrogen in meat product
Through the combination of chain conveyor and refrigeration conveying part, the meat can be cooled in all directions during the transfer process, which solves the problem of increased volatile basic nitrogen in meat products during the transfer process, maintains good meat quality and extends the shelf life.
Patent Information
- Application Number
- CN202510906463.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-02
- Publication Date
- 2025-09-30
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing technology lacks equipment to cool the meat products during transfer, which causes the volatile basic nitrogen content of the meat products to increase during the transfer process, affecting the quality of the meat products.
A cooling device is used that combines a chain conveyor with a refrigeration conveying part and a meat cooling and beating part. The design of the roller and the exhaust hole allows the meat to be cooled from both the upper and lower layers at the same time. Combined with vacuum packaging technology and low-temperature pre-cooling treatment, the low temperature environment of the meat is maintained during the transfer process.
Effectively reduce the content of volatile basic nitrogen in meat products, maintain the quality of meat products during the transfer process, and extend the shelf life.
Smart Images
Figure CN120713153A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of meat food processing, and in particular to a processing method for reducing volatile basic nitrogen in meat products. Background Art
[0002] Volatile basic nitrogen (VBN) is a key indicator of meat freshness and spoilage. Higher VBN levels indicate a greater concentration of alkaline nitrogen-containing substances, such as ammonia and amines, produced by protein breakdown, and therefore poorer food quality. Processing methods to reduce VBN in meat products include raw material screening, pretreatment processes, and low-temperature processing and storage technologies.
[0003] Existing meat materials can effectively reduce the volatile basic nitrogen in meat products when they are processed at low temperatures at the workstation. However, the meat materials are in a state of rising temperature during the transfer process. Currently, there is a lack of relevant equipment and devices to cool the meat products during transfer. Summary of the Invention
[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a processing method for reducing volatile basic nitrogen in meat products to solve the problem that there is currently a lack of relevant equipment and devices for cooling meat products during transfer.
[0005] According to an embodiment of the present application, a processing method for reducing volatile basic nitrogen in meat products comprises the following steps: S1: Raw material screening, select fresh, non-corrupted raw meat; S2: Cleaning and removing impurities, cleaning the raw meat screened in step S1 to remove surface dirt, blood stains and impurities; S3: trimming, removing easily corruptible tissues such as fascia and fat from the raw meat after cleaning and removing impurities in step S2; S4: Low-temperature pre-cooling: After slaughter, refrigeration equipment is used to quickly pre-cool the raw meat to reduce the meat temperature and inhibit microbial growth and enzyme activity; S5: Low temperature processing, using low temperature equipment to maintain a low temperature processing environment during the transfer of feed meat processing; S6: Low-temperature storage and transportation: Store and transport processed meat products under low-temperature conditions to extend shelf life and maintain quality.
[0006] In some embodiments of the present application, the temperature of the low-temperature pre-cooling, low-temperature processing, low-temperature storage and transportation in the above steps is 0~4°C.
[0007] In some embodiments of the present application, the storage and transportation in step S6 adopt vacuum packaging technology.
[0008] In some embodiments of the present application, the meat material in step S2 is washed and then quickly air-dried using air-drying equipment.
[0009] The present application also provides a processing and transfer device for reducing volatile basic nitrogen in meat products, which is applied to the low-temperature processing and transfer of meat materials in the above-mentioned processing method for reducing volatile basic nitrogen in meat products, comprising: A chain conveyor and an outer cover portion, wherein the outer cover portion includes an outer cover casing and a fan, wherein the outer cover casing is installed above the outside of the chain conveyor, and the fan is installed on the top of the outer cover casing; The refrigeration delivery part includes a bottom cover shell, an evaporator, an air inlet pipe, an end shell, a roller and a support. The evaporator is installed inside the outer cover shell below the fan. The bottom cover shell is connected to the top wall of the outer cover shell outside the fan. The roller is located inside the outer cover shell, and the two groups of support members are respectively arranged at both ends of the roller and rotate with the roller. The end shell is arranged at one end of the roller and rotates with the end of the roller. The refrigeration delivery part connects the bottom cover shell and the end shell, and the outer wall of the roller is provided with a plurality of exhaust holes.
[0010] In some embodiments of the present application, the chain conveyor includes a frame, a driving roller, a driven roller, a chain and a motor. The driving roller and the driven roller are rotatably arranged at both ends of the frame respectively. The chain is designed to be outside the driving roller and the driven roller, and the motor is installed on the outside of the frame to drive the driving roller to rotate.
[0011] In some embodiments of the present application, the support member connects the drum and the frame.
[0012] In some embodiments of the present application, the support member includes a bearing seat, a spring, an adjusting bolt and a nut. The bottom end of the adjusting bolt is rotatably arranged with the frame, the bearing seat is rotatably matched with the end of the roller, the nut is fixedly arranged with the bearing seat, and the adjusting bolt is threadedly matched with the nut.
[0013] In some embodiments of the present application, a side shell is provided on the side of the outer cover shell, and thermal insulation strips are provided at both ends of the outer cover shell. An air intake port is provided on the end shell, and one end of the air intake pipe is connected to the air intake port.
[0014] In some embodiments of the present application, the refrigeration delivery part further includes an air pump, which is installed in the air inlet pipe section.
[0015] The processing and transfer device for reducing volatile basic nitrogen in meat products also includes a meat cooling and beating part, which is connected between the drum and the end shell. The meat cooling and beating part includes a drum shell, a connecting pipe, a pressure control valve and an elastic film layer. The end of the drum shell is rotatably arranged through a support member, the outer wall of the drum shell is provided with a plurality of notches, the elastic film layer is arranged on the inner wall of the drum shell, the air vent at the end of the bottom cover shell is provided with a screen, and a plurality of balls are placed inside the elastic film layer. The drum shell is rotatably fitted with a first end cover at one end away from the end shell, and the drum is rotatably fitted with a second end cover at one end. The two ends of the connecting pipe are respectively connected with the first end cover and the second end cover, and the pressure control valve is installed in the connecting pipe section.
[0016] The processing and transfer device for reducing volatile basic nitrogen in meat products also includes a roll protection part, which includes a spiral elastic blade and an elastic strip plate. A plurality of the elastic strip plates are distributed in a ring array and are integrally formed on the spiral elastic blade. A first arc groove is provided on the outer wall of the spiral elastic blade near the notch, and a second arc groove is provided on the outer wall of the elastic strip plate near the notch.
[0017] The beneficial effect of the present application is: the present application obtains a processing method for reducing volatile basic nitrogen in meat products through the above-mentioned design. When the meat is transported and transferred on the chain plate, heat exchange is carried out between the chain plate and the meat, so that the heat at the bottom of the meat is quickly dissipated, and the setting of the roller and the exhaust hole can quickly dissipate the heat above the meat, that is, the meat can be cooled from the upper and lower layers at the same time, reducing the volatile basic nitrogen in the meat products. The meat will not be affected by heat during the processing and transfer process, thereby maintaining the good quality of the meat during the transfer process.
[0018] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.
[0020] Figure 1 1 is a schematic structural diagram of a processing method for reducing volatile basic nitrogen in meat products according to an embodiment of the present application; Figure 2 1 is a schematic structural diagram of a chain conveyor according to an embodiment of the present application; Figure 3 is a schematic structural diagram of the outer cover according to an embodiment of the present application; Figure 4 Schematic diagram of the structure of the outer cover part and the refrigeration delivery part according to an embodiment of the present application; Figure 5 is a schematic structural diagram of the refrigeration delivery part according to an embodiment of the present application; Figure 6 is a schematic structural diagram of the end shell, roller and support member according to an embodiment of the present application; Figure 7 is a schematic diagram of the support structure according to an embodiment of the present application; Figure 8 This is a schematic structural diagram of the end shell, roller, support member, and meat cooling and beating part according to an embodiment of the present application; Figure 9 Schematic diagram of the internal structure of the cartridge shell according to an embodiment of the present application; Figure 10 This is a schematic diagram of the structure of the interior of the cylinder shell and the rollover protection part according to an embodiment of the present application; Figure 11 It is a schematic diagram of the structure of the rollover protection part according to an embodiment of the present application.
[0021] icon: 10-Chain conveyor; 110-Frame; 120-Drive roller; 130-Driven roller; 140-Chain; 150-Motor; 20-Outer cover; 210-Outer cover casing; 220-Fan; 230-Side casing; 240-Insulation strip; 30-Refrigeration conveyor; 310-Bottom cover; 320-Evaporator; 330-Intake pipe; 340-End casing; 350-Roller; 360-Support; 361-Bearing seat; 362-Spring; 363-Adjusting bolt ;364-nut;370-exhaust hole;380-air inlet port;390-air pump;40-meat cooling and beating part;410-cylinder shell;420-first end cover;430-second end cover;440-connecting pipe;450-pressure control valve;460-slot;470-elastic film layer;480-ball;490-screen;50-rollover protection part;510-spiral elastic blade;520-elastic strip;530-first arc groove;540-second arc groove. DETAILED DESCRIPTION
[0022] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.
[0023] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.
[0024] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.
[0025] A processing method for reducing volatile basic nitrogen in meat products according to an embodiment of the present application is described below with reference to the accompanying drawings.
[0026] According to an embodiment of the present application, a processing method for reducing volatile basic nitrogen in meat products comprises the following steps: S1: Raw material screening, select fresh, non-corrupted raw meat; S2: Cleaning and removing impurities, cleaning the raw meat screened in step S1 to remove surface dirt, blood stains and impurities; S3: trimming, removing easily corruptible tissues such as fascia and fat from the raw meat after cleaning and removing impurities in step S2; S4: Low-temperature pre-cooling: After slaughter, refrigeration equipment is used to quickly pre-cool the raw meat to reduce the meat temperature and inhibit microbial growth and enzyme activity; S5: Low temperature processing, using low temperature equipment to maintain a low temperature processing environment during the transfer of feed meat processing; S6: Low-temperature storage and transportation: Store and transport processed meat products under low-temperature conditions to extend shelf life and maintain quality.
[0027] The above-mentioned processing method for reducing volatile basic nitrogen in meat products can have a good cooling effect on the meat during the entire processing, storage and transportation process, and has a good effect on reducing volatile basic nitrogen in meat products.
[0028] In specific configurations, the temperature for low-temperature pre-cooling, low-temperature processing, low-temperature storage, and transportation in the above steps is 0-4°C. Vacuum packaging technology is used for storage and transportation in step S6. The meat material in step S2 is washed and then rapidly air-dried using air-drying equipment.
[0029] See also Figure 1-Figure 7The present application also provides a processing and transfer device for reducing volatile basic nitrogen in meat products, which is used for low-temperature processing and transferring meat materials in the above-mentioned processing method for reducing volatile basic nitrogen in meat products, and includes a chain conveyor 10, an outer cover part 20 and a refrigeration conveying part 30.
[0030] Among them, the meat material is transferred to the next process through the chain conveyor 10. The setting of the refrigeration conveying part 30 and the outer cover part 20 can cooperate with the chain conveyor 10 to perform a good cooling treatment on the transferred meat material, so as to reduce the volatile basic nitrogen generated by the meat products during the process transfer.
[0031] The outer housing 20 includes an outer housing casing 210 and a fan 220. The outer housing casing 210 is mounted above the exterior of the chain conveyor 10, and the fan 220 is mounted on top of the outer housing casing 210. The refrigeration conveying section 30 includes a bottom housing 310, an evaporator 320, an air inlet duct 330, an end housing 340, a roller 350, and support members 360. The evaporator 320 is mounted inside the outer housing 210 below the fan 220. The bottom housing 310 covers the fan 220 and is connected to the top wall of the outer housing 210. The roller 350 is located inside the outer housing 210, and two sets of support members 360 are respectively provided at each end of the roller 350 and rotatably engage with the roller 350. The end housing 340 is provided at one end of the roller 350 and rotatably engages with the end of the roller 350. The refrigeration conveying section 30 connects the bottom housing 310 and the end housing 340. The outer wall of the roller 350 is provided with a plurality of exhaust holes 370.
[0032] The operating principle of this processing and transfer device for reducing volatile basic nitrogen in meat products is as follows: meat is placed on a chain conveyor 10 for transfer to the next processing step. An external refrigeration device (not shown) delivers cold air to the evaporator 320, which lowers the temperature inside the bottom housing 310. The fan 220 then blows the external air into the bottom housing 310, rapidly blowing the cold air surrounding the evaporator 320 inside the bottom housing 310 into the air intake duct 330. The cold air entering the air intake duct 330 passes through the end housing 340 and into the drum 350, thereby cooling the drum 350. When the meat is conveyed to the bottom of the drum 350 by the chain conveyor 10, the moving meat passes through the drum 350 and rubs against it, causing the drum 350 to roll. When the rolling drum 350 contacts the meat, it can not only exchange heat between the temperature of the drum 350 itself and the temperature of the meat, so that the meat can be quickly cooled when it contacts the outer wall of the drum 350, but also the circulating cold air entering from the air inlet pipe 330 also enters the interior of the drum 350, and finally quickly flows to the surface of the meat from the exhaust hole 370 on the outside of the drum 350, further increasing the cooling speed of the meat and reducing the volatile basic nitrogen generated during the transfer processing of meat products.
[0033] The cold air entering the drum 350 from the air inlet 330 is discharged from the exhaust hole 370 into the outer housing 210, rapidly cooling the temperature inside the outer housing 210. When the meat is located inside the outer housing 210 above the chain conveyor 10, the meat can be continuously cooled during transfer. The cold air inside the outer housing 210 also rapidly cools the chain plates 140 of the chain conveyor 10. When the meat is transported and transferred on the chain plates 140, heat exchange can occur between the chain plates 140 and the meat, allowing the heat at the bottom of the meat to be quickly dissipated. The arrangement of the drum 350 and the exhaust hole 370 allows the heat above the meat to be quickly dissipated. In other words, the meat can be cooled from both the upper and lower layers simultaneously, reducing the volatile basic nitrogen in the meat product. The meat is not affected by heat during the processing and transfer process, thereby maintaining good meat quality during the transfer process.
[0034] In the above specific implementation, please refer to Figure 2 The chain conveyor 10 comprises a frame 110, a driving roller 120, a driven roller 130, a chain plate 140, and a motor 150. The driving roller 120 and the driven roller 130 are rotatably mounted at both ends of the frame 110, with the chain plate 140 positioned externally of the driving roller 120 and the driven roller 130. The motor 150 is mounted externally of the frame 110 to drive the driving roller 120. The output shaft of the motor 150 is fixedly connected to the shaft end of the driving roller 120 via a coupling.
[0035] The meat is placed on the chain plate 140 of the chain conveyor 10 and transferred to the next process. Specifically, the output shaft end of the motor 150 drives the active roller 120 to rotate, and the cooperation of the driven roller 130 drives the chain plate 140 between the active roller 120 and the driven roller 130 to rotate and transfer the meat above.
[0036] For further information, see Figure 7 The support member 360 connects the roller 350 and the frame 110. The support member 360 includes a bearing seat 361, a spring 362, an adjusting bolt 363, and a nut 364. The bottom end of the adjusting bolt 363 is rotatably mounted on the frame 110, the bearing seat 361 is rotatably engaged with the end of the roller 350, the nut 364 is fixedly mounted on the bearing seat 361, and the adjusting bolt 363 and the nut 364 are threadedly engaged. The spring 362 in the support member 360 can be used to elastically support the roller 350. By rotating the adjusting bolt 363, the nut 364 can drive the bearing seat 361 to move and adjust in the vertical direction, that is, adjust the height of the roller 350 in the vertical direction. The roller 350 can also be driven to rotate by an external drive device.
[0037] Specifically, the outer housing 210 is provided with side shells 230, and insulation strips 240 are provided at both ends of the outer housing 210. An air inlet port 380 is provided on the end shell 340, and one end of the air inlet pipe 330 is connected to the air inlet port 380. The multiple sets of insulation strips 240 block the gap between the outer housing 210 and the chain plate 140, reducing the escape of cold air from the outer housing 210. Furthermore, an insulation layer can be provided inside the outer housing 210 to reduce the escape of cold air.
[0038] For specific settings, please refer to Figure 8 The refrigeration conveying section 30 further includes an air pump 390, which is installed in the air inlet pipe 330. The air pump 390 can quickly transfer the cold air inside the outer housing 210 to the inside of the drum 350. The cold air can diffuse into the interior of the outer housing 210, and the flow rate of the cold air discharged through the exhaust hole 370 is increased, so that the meat can be cooled more quickly when exposed to the cold air.
[0039] The cold air generated in the above-mentioned processing transfer device for reducing volatile basic nitrogen in meat products is directly discharged from the exhaust hole 370 outside the drum 350, and only a single drum 350 is provided to contact the upper surface of the meat. If the heat transfer time on the upper surface of the meat can be increased, the cooling efficiency of the meat can be further improved.
[0040] See also Figure 8 and Figure 9 The processing and transfer device for reducing volatile basic nitrogen in meat products also provides another embodiment. The processing and transfer device further includes a meat cooling and beating section 40, which is connected between the drum 350 and the end shell 340. The meat cooling and beating section 40 comprises a cylindrical shell 410, a connecting pipe 440, a pressure control valve 450, and an elastic film layer 470. The end of the cylindrical shell 410 is rotatably mounted via a support 360. The outer wall of the cylindrical shell 410 is provided with a plurality of notches 460. The elastic film layer 470 is disposed on the inner wall of the cylindrical shell 410. A screen 490 is provided at the vent opening at the end of the bottom cover 310. Several balls 480 are positioned within the elastic film layer 470. A first end cover 420 is rotatably engaged with the end of the cylindrical shell 410 away from the end shell 340, and a second end cover 430 is rotatably engaged with the end of the drum 350. Both ends of the connecting pipe 440 are connected to the first end cover 420 and the second end cover 430 respectively, and the pressure control valve 450 is installed in the connecting pipe 440.
[0041] In this processing and transfer device for reducing volatile basic nitrogen in meat products, a meat cooling and beating section 40 is provided between the air inlet pipe 330 and the drum 350. Multiple sets of these sections can be provided, depending on the needs, i.e., the length of the chain plate 140. In this embodiment, a single set is used for illustration. Cold air entering from the air inlet pipe 330 passes through the end shell 340 and enters the elastic film layer 470 within the cylinder shell 410. The cold air entering the elastic film layer 470 transfers its temperature through the cylinder shell 410 and into contact with the upper surface of the meat material above the chain plate 140. Then, when passing through the drum 350, the meat material again comes into contact with the outer surface of the drum 350, increasing the contact heat conduction time on the upper surface of the meat material and further enhancing the cooling effect on the upper surface of the meat material. The cold air entering the elastic film layer 470 inside the drum shell 410 can enter the drum 350 through the first end cover 420, the connecting pipe 440, and the second end cover 430, and finally be discharged from the exhaust hole 370 outside the drum 350 to the inside of the outer cover shell 210, maintaining the original cooling method.
[0042] Because the connecting tube 440 is provided with a pressure control valve 450, it provides a certain barrier to cold air, increasing the air pressure inside the cylindrical shell 410. The air pump 390 pumps cold air into the elastic film layer 470, increasing the air pressure inside the elastic film layer 470, causing the elastic film layer 470 to bulge against the inner wall of the cylindrical shell 410. Under the action of this internal air pressure, the elastic film layer 470 located at the notch 460 bulges outward. As the cylindrical shell 410 rotates, the balls 480 inside the cylindrical shell 410 fall into the elastic film layer 470 that protrudes outward from the notch 460. The balls 480, through the elastic film layer 470, pat the upper layer of the meat. This patting softens the upper layer of the meat, facilitating heat transfer from the meat, further enhancing the cooling effect on the meat and reducing the volatile basic nitrogen in the meat product.
[0043] The screen 490 is provided to prevent the balls 480 inside the cylindrical shell 410 from falling out from the end. The cylindrical shell 410 can also be driven by a driving device alone.
[0044] If the ball 480 inside the cylindrical shell 410 in the above-mentioned processing and transfer device for reducing volatile basic nitrogen in meat products can fall from a certain height into the protruding elastic film layer 470 inside the groove 460, it will have a better beating effect on the upper layer of the meat material, which can further improve the cooling treatment effect of the meat material during the transfer process.
[0045] See also Figure 10 and Figure 11The processing and transfer device for reducing volatile basic nitrogen in meat products also includes a rollover protection portion 50, which includes a spiral elastic blade 510 and an elastic strip 520. Multiple elastic strips 520 are arranged in a circular array and are integrally formed with the spiral elastic blade 510. A first arcuate groove 530 is provided on the outer wall of the spiral elastic blade 510 near the notch 460, and a second arcuate groove 540 is provided on the outer wall of the elastic strip 520 near the notch 460.
[0046] The spiral elastic blades 510 and elastic strips 520 can be made of highly elastic rubber or latex sheets. When the cylindrical shell 410 rotates the internal elastic film layer 470, the rotating elastic film layer 470 simultaneously drives the elastic strips 520 and the spiral elastic blades 510 to rotate. The rotating elastic strips 520 move the balls 480 within the elastic film layer 470 to a certain height before they fall. The spiral elastic blades 510, integrally formed with the elastic strips 520, act as a lateral limiter. The spiral elastic blades 510 and the elastic strips 520 are tilted at a certain angle, allowing the balls 480 lifted by the elastic strips 520 to fall along the spiral elastic blades 510 at a certain angle. The angled design of the spiral elastic blades 510 and the notch 460 in the cylindrical shell 410 allows the balls 480, guided by the spiral elastic blades 510, to more easily follow the first and second curved grooves 530, 540 and fall into the protruding elastic film layer 470 within the notch 460, thereby improving the accuracy of the balls 480's impact. This also increases the height at which the balls 480 can rise and fall, further enhancing the impact force and effectiveness of the balls 480 and further optimizing the cooling capacity of the meat.
[0047] It should be noted that the specific models and specifications of the aforementioned motor 150, fan 220, air pump 390, and evaporator 320 must be selected based on the actual specifications of the device. The specific selection and calculation methods utilize existing techniques in the art and are therefore not described in detail here. The power supply and principles of the motor 150, fan 220, air pump 390, and evaporator 320 are well known to those skilled in the art and will not be described in detail here.
[0048] The foregoing is merely an embodiment of the present application and is not intended to limit the scope of protection of the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included within the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined or explained in subsequent figures.
[0049] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.
Claims
1. A processing method for reducing volatile basic nitrogen in meat products, characterized in that: The steps include: S1: Raw material screening, select fresh, non-corrupted raw meat; S2: Cleaning and removing impurities, cleaning the raw meat screened in step S1 to remove surface dirt, blood stains and impurities; S3: trimming, removing easily corruptible tissues such as fascia and fat from the raw meat after cleaning and removing impurities in step S2; S4: Low-temperature pre-cooling: After slaughter, refrigeration equipment is used to quickly pre-cool the raw meat to reduce the meat temperature and inhibit microbial growth and enzyme activity; S5: Low temperature processing, using low temperature equipment to maintain a low temperature processing environment during the transfer of feed meat processing; S6: Low-temperature storage and transportation: Store and transport processed meat products under low-temperature conditions to extend shelf life and maintain quality.
2. The method for reducing volatile basic nitrogen in meat products according to claim 1, characterized in that: The temperature of low-temperature pre-cooling, low-temperature processing, low-temperature storage and transportation in the above steps is 0~4℃.
3. The method for reducing volatile basic nitrogen in meat products according to claim 1, characterized in that: The storage and transportation in step S6 adopt vacuum packaging technology.
4. The method for reducing volatile basic nitrogen in meat products according to claim 1, characterized in that: In step S2, the meat material is washed and then quickly air-dried using air-drying equipment.
5. A processing and transfer device for reducing volatile basic nitrogen in meat products, characterized in that: The low-temperature processed transferred meat material used in the above-mentioned method for reducing volatile basic nitrogen in meat products comprises: A chain conveyor (10) and an outer cover portion (20), wherein the outer cover portion (20) includes an outer cover casing (210) and a fan (220), wherein the outer cover casing (210) is installed above the outside of the chain conveyor (10), and the fan (220) is installed on the top of the outer cover casing (210); A refrigeration conveying part (30) includes a bottom cover shell (310), an evaporator (320), an air inlet pipe (330), an end shell (340), a roller (350) and a support member (360). The evaporator (320) is installed inside the outer cover shell (210) below the fan (220). The bottom cover shell (310) covers the outside of the fan (220) and is connected to the inner top wall of the outer cover shell (210). The roller (350) is located inside the outer cover shell (210), and two groups of the support members (360) are respectively arranged at both ends of the roller (350) and rotated with the roller (350). The end shell (340) is arranged at one end of the roller (350) and rotated with the end of the roller (350). The refrigeration conveying part (30) connects the bottom cover shell (310) and the end shell (340). The outer wall of the roller (350) is provided with a plurality of exhaust holes (370).
6. The processing and transfer device for reducing volatile basic nitrogen in meat products according to claim 5, characterized in that: The chain conveyor (10) comprises a frame (110), a driving roller (120), a driven roller (130), a chain plate (140) and a motor (150). The driving roller (120) and the driven roller (130) are rotatably arranged at two ends of the frame (110), respectively. The chain plate (140) is designed to be outside the driving roller (120) and the driven roller (130). The motor (150) is installed outside the frame (110) to drive the driving roller (120) to rotate.
7. A processing and transfer device for reducing volatile basic nitrogen in meat products according to claim 6, characterized in that: The support member (360) connects the roller (350) and the frame (110).
8. The processing and transfer device for reducing volatile basic nitrogen in meat products according to claim 7, characterized in that: The support member (360) includes a bearing seat (361), a spring (362), an adjusting bolt (363) and a nut (364); the bottom end of the adjusting bolt (363) is rotatably arranged with the frame (110); the bearing seat (361) is rotatably matched with the end of the roller (350); the nut (364) is fixedly arranged with the bearing seat (361); and the adjusting bolt (363) and the nut (364) are threadedly matched.
9. The processing and transfer device for reducing volatile basic nitrogen in meat products according to claim 5, characterized in that: A side shell (230) is provided on the side of the outer cover casing (210), and thermal insulation strips (240) are provided at both ends of the outer cover casing (210). An air intake port (380) is provided on the end shell (340), and one end of the air intake pipe (330) is connected to the air intake port (380).
10. The processing and transfer device for reducing volatile basic nitrogen in meat products according to claim 5, characterized in that: The refrigeration delivery part (30) further includes an air pump (390), and the air pump (390) is installed in the air inlet pipe (330) section.