Blueberry-flavored jam processing device and processing method thereof

Abstract

The invention discloses a blueberry flavor jam processing device which comprises a concentration tank body and a sealing cover, the sealing cover and the concentration tank body are connected through two telescopic assemblies which are symmetrically arranged left and right, so that the sealing cover can move up and down relative to the concentration tank body; a feeding pipe extending into the concentration tank body is rotationally connected to the sealing cover in a penetrating manner, the feeding pipe is driven by a first driving motor to rotate, a filtering assembly is mounted in the feeding pipe, and a stirring assembly extending into the concentration tank body is mounted on the sealing cover; the stirring assembly rotates and moves up and down to stir blueberry jam, a clamping cavity is formed in the concentration tank body, and a circulating heating assembly communicating with the clamping cavity is installed on the concentration tank body. The blueberry flavor jam production line is reasonable in structural design, efficient and high-quality production of blueberry flavor jam can be achieved, market requirements are met, and meanwhile the quality and safety of products are guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of blueberry jam processing, and particularly relates to a blueberry flavor jam processing device and a processing method thereof. Background Art

[0002] Blueberry jam is made from materials such as blueberries. Blueberry jam can relieve eye fatigue, improve night vision, lower cholesterol, prevent cancer and heart diseases, protect capillaries and have antioxidant effects, delay the aging of the brain nerves, enhance memory, and eliminate inflammation in the body.

[0003] During the processing of blueberry jam, it usually needs to be concentrated. Currently, a spiral continuous pre-cooking machine is usually used. Such equipment has poor adaptability to the material form and density. If the blueberry particle sizes are inconsistent or the slurry viscosity fluctuates, it may lead to uneven pre-cooking, affecting the subsequent process. Moreover, ordinary jam is prone to problems such as collapse, stuffing swelling, and water loss during high-temperature baking, such as at 220°C, which affects the quality and taste of the jam. For this reason, we provide a blueberry flavor jam processing device and a processing method thereof to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art, and to propose a blueberry flavor jam processing device and a processing method thereof, which can realize the efficient and high-quality production of blueberry flavor jam, meet the market demand, and at the same time ensure the quality and safety of the product.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A blueberry flavor jam processing device includes a concentration tank body and a sealing cover. The sealing cover is connected to the concentration tank body through two symmetrically arranged telescopic components on the left and right, so that the sealing cover can move up and down relative to the concentration tank body. A feed pipe extending into the concentration tank body is rotatably connected through the sealing cover. The feed pipe is driven to rotate by a first driving motor. A filtering component is installed in the feed pipe. A stirring component extending into the concentration tank body is installed on the sealing cover. The stirring component rotates and moves up and down to stir the blueberry jam. A clamping cavity is provided in the concentration tank body. A circulating heating component communicated with the clamping cavity is installed on the concentration tank body. An operation panel is installed on the concentration tank body. A plurality of support legs are installed at the bottom of the concentration tank body. A discharge pipe is installed through the bottom of the concentration tank body.

[0007] Preferably, the telescopic component includes a first support plate fixedly connected to the side wall of the concentration tank body, a second support plate fixedly connected to the side wall of the sealing cover, and a first cylinder is installed between the first support plate and the second support plate.

[0008] Preferably, drive rollers are installed on both the feed pipe and the output shaft of the first drive motor, and the two drive rollers are connected by a drive belt.

[0009] Preferably, the filter assembly includes a cover detachably connected to the feed pipe. A connecting pipe is installed through the cover. A rotary joint is connected to the end of the connecting pipe. An external thread ring located below the connecting pipe is fixedly connected inside the cover. A filter frame is threadedly connected to the external thread ring. A filter net is installed through the filter frame.

[0010] Preferably, the stirring assembly includes a U-shaped frame installed on the sealing cover. A second drive motor is installed at the inner top of the U-shaped frame. A support plate is installed at the end of the output shaft of the second drive motor. A second cylinder is installed at the bottom of the support plate. The telescopic end of the second cylinder is fixedly connected to a stirring rod extending into the inner cavity of the concentration tank. A plurality of stirring blades are fixedly connected to the side wall of the stirring rod. A plurality of scraping plates that abut against the inner bottom of the concentration tank are fixedly connected to the side wall of the stirring rod.

[0011] Preferably, an annular sliding groove is opened at the upper end of the sealing cover. A support ring sleeved on the side wall of the second cylinder is fixedly connected thereto. A plurality of connecting rods extending into the annular sliding groove and slidably connected thereto are fixedly connected to the bottom of the support ring.

[0012] Preferably, the circulating heating assembly includes a first water storage tank and a second water storage tank installed at the upper and lower ends of the side wall of the concentration tank. The water outlet end of the first water storage tank extends into the clamping cavity. The water inlet end of the second water storage tank extends into the clamping cavity. The first water storage tank and the second water storage tank are interconnected through a communicating pipe. A heating box is installed on the side wall of the communicating pipe.

[0013] Preferably, a vacuum pump and a steam condenser are installed on the sealing cover. A refractometer and a temperature probe are installed inside the concentration tank.

[0014] A method for processing blueberry-flavored jam includes the following steps:

[0015] S1. Raw material treatment: After the blueberries are cleaned by bubble cleaning and high-pressure spraying, they enter a stem remover to remove the stems, and are processed into a pulp by a twin-screw crusher;

[0016] S2. Vacuum low-temperature concentration: Connect the delivery pipe to the rotary joint, and transport the pulpy blueberries and other raw materials through the delivery pipe and rotary joint to the feed pipe. Start the drive motor. Under the connection of the conveyor belt, drive the feed pipe to rotate. The pulpy blueberries are filtered through the filter screen under the action of centrifugal force and then enter the inside of the concentration tank. Make the hot water circulate in the first water storage tank, the second water storage tank and the clamping cavity, heat the inside of the concentration tank to 55 - 60 °C, the vacuum pump maintains the vacuum degree in the tank at 0.08 - 0.09 MPa, the steam condenser recovers the evaporated water vapor, the second drive motor cooperates with the second cylinder to drive the stirring rod to rotate and move up and down reciprocally to stir the jam, the refractometer detects the solid content value in real time, and automatically terminates the concentration when the solid content reaches 65% - 68%, and discharge the blueberry pulp through the discharge pipe;

[0017] S3. Ultrasonic homogenization: The concentrated jam enters the ultrasonic homogenizer and is processed for 5 - 10 minutes to increase the viscosity of the jam to 1500 - 2000 mPa·s;

[0018] S4. Aseptic filling: The jam is transported to the filling system through an aseptic pipeline and filled into pre-sterilized glass bottles in a Class 100 clean environment. The filling temperature is ≥85 °C. After capping and sealing, the residual oxygen in the bottle is ≤1%;

[0019] S5. Sterilization and cooling: Keep warm for 10 minutes in a 90 °C aseptic environment and then keep warm for 15 minutes in an 85 °C aseptic environment, and then quickly cool to below 30 °C. After cooling, randomly check the microbial indicators, and the total number of colonies is ≤100 CFU / g;

[0020] S6. Packaging and quality inspection: After labeling and boxing, remove foreign objects through an X-ray detector to complete the processing of blueberry-flavored jam.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] 1. For this blueberry-flavored jam processing device, through the circulating heating component, circulating hot water at 50 - 60 °C can be passed through the clamping cavity, which can avoid local high-temperature coking through indirect heating, and the vacuum low-temperature concentration reduces the loss of heat-sensitive substances such as anthocyanins and retains the natural flavor of blueberries.

[0023] 2. For this blueberry-flavored jam processing device, by driving the stirring blades and the scraping plate to rotate with the stirring rod, the jam at the bottom of the inside of the concentration tank can be scraped up to stir the jam, prevent the pulp from depositing and coking, keep the heat transfer uniform, and the second cylinder intermittently drives the stirring rod to move up and down, which is beneficial for the jam to be fully heated.

[0024] 3. The blueberry flavor jam processing device and method can achieve the efficient and high-quality production of blueberry flavor jam, combining industrial scale with natural and healthy characteristics, and meeting the needs of modern consumers for food cleanliness and hygiene. Brief Description of the Drawings

[0025] Figure 1 It is a schematic structural diagram of a blueberry flavor jam processing device proposed by the present invention from the first perspective;

[0026] Figure 2 It is a schematic structural diagram of a blueberry flavor jam processing device proposed by the present invention from the second perspective;

[0027] Figure 3 It is a schematic front plane structural diagram of a blueberry flavor jam processing device proposed by the present invention;

[0028] Figure 4 It is Figure 3 The enlarged view of the structure at A in

[0029] Figure 5 It is a schematic top plane structural diagram of a blueberry flavor jam processing device proposed by the present invention;

[0030] Figure 6 It is Figure 5 The sectional view at A-A in

[0031] Figure 7 It is Figure 5 The sectional view at B-B in

[0032] Figure 8 It is Figure 7 The enlarged view of the structure at B in

[0033] In the figure: 1. Concentrating tank body; 2. Sealing cover; 3. First support plate; 4. Second support plate; 5. First cylinder; 6. Feed pipe; 7. Cover body; 8. External thread ring; 9. Filter frame; 10. Filter screen; 11. Connecting pipe; 12. Rotary joint; 13. First driving motor; 14. Transmission belt; 15. U-shaped frame; 16. Second driving motor; 17. Second cylinder; 18. Stirring rod; 19. Stirring blade; 20. Scraper; 21. Support ring; 22. Connecting rod; 23. Vacuum pump; 24. Steam condenser; 25. Operation panel; 26. Support leg; 27. First water storage tank; 28. Second water storage tank; 29. Heating box; 30. Connecting pipe; 31. Clamping cavity. Detailed Description of the Embodiment

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0035] Referring to Figures 1-8 , a blueberry - flavored jam processing device includes a concentration tank body 1 and a sealing cover 2. The sealing cover 2 is connected to the concentration tank body 1 through two symmetrically arranged telescopic components on the left and right, enabling the sealing cover 2 to move up and down relative to the concentration tank body 1. The telescopic component includes a first support plate 3 fixedly connected to the side wall of the concentration tank body 1, and a second support plate 4 fixedly connected to the side wall of the sealing cover 2. A first cylinder 5 is installed between the first support plate 3 and the second support plate 4. The first cylinder 5 can drive the second support plate 4 to move up and down, so that the sealing cover 2 moves up and down. When the sealing cover 2 moves upward, it is convenient to clean the concentration tank body 1;

[0036] A feed pipe 6 is rotatably connected through the sealing cover 2 and extends into the concentration tank body 1. The feed pipe 6 is driven to rotate by a first drive motor 13. Transmission rollers are installed on both the feed pipe 6 and the output shaft of the first drive motor 13. The two transmission rollers are connected by a transmission belt 14. Under the connection action of the transmission belt 14, the first drive motor 13 can drive the feed pipe 6 to rotate;

[0037] A filtering component is installed in the feed pipe 6. The filtering component includes a cover body 7 detachably connected to the feed pipe 6. The feed pipe 6 has an external thread, and the cover body 7 has an internal thread. The cover body 7 is thread - connected to the feed pipe 6, which is convenient for installation and disassembly. Thus, it is convenient to take out the filter frame 9 for cleaning. A connecting pipe 11 is installed through the cover body 7. The end of the connecting pipe 11 is connected to a rotary joint 12. The rotary joint 12 has an internal thread. Through the rotary joint 12, the connecting pipe 11 can be connected to the blueberry pulp conveying pipe, and the rotation of the feed pipe 6 will not affect the feeding work. An external - thread ring 8 located below the connecting pipe 11 is fixedly connected inside the cover body 7. A filter frame 9 is thread - connected to the external - thread ring 8, making it convenient to install or remove the filter frame 9 on the external - thread ring 8. Thus, it is convenient to clean the filter frame 9. A filter net 10 is installed through the filter frame 9. When the feed pipe 6 rotates, the blueberry jam in the filter frame 9 can be filtered through the filter net 10 under the action of centrifugal force, filtering out the large - particle blueberries that are not fully broken, ensuring the product quality;

[0038] A stirring assembly extending into the inner part of the concentrated tank body 1 is installed on the sealing cover 2. The stirring assembly rotates and moves up and down to stir the blueberry jam. The stirring assembly includes a U-shaped frame 15 installed on the sealing cover 2. A second driving motor 16 is installed at the inner top of the U-shaped frame 15. A support plate is installed at the end of the output shaft of the second driving motor 16. A second air cylinder 17 is installed at the bottom of the support plate. An annular sliding groove is formed at the upper end of the sealing cover 2. A support ring 21 fixedly connected thereto is sleeved on the side wall of the second air cylinder 17. A plurality of connecting rods 22 extending into the annular sliding groove and slidably connected thereto are fixedly connected to the bottom of the support ring 21. The connecting rods 22 slide in the annular sliding groove, so that the connecting rods 22 and the support ring 21 can jointly support the second air cylinder 17, enabling the second air cylinder 17 to stably rotate following the second driving motor 16. The telescopic end of the second air cylinder 17 is fixedly connected with a stirring rod 18 extending into the inner part of the concentrated tank body 1. A plurality of stirring blades 19 are fixedly connected to the side wall of the stirring rod 18. A plurality of scraping plates 20 abutting against the inner bottom of the concentrated tank body 1 are fixedly connected to the side wall of the stirring rod 18. The scraping plates 20 can scrape up the jam at the inner bottom of the concentrated tank body 1. Moreover, the second air cylinder 17 intermittently drives the stirring rod 18 to move up and down, which is beneficial to the jam being fully heated. The stirring rod 18 drives the stirring blades 19 and the scraping plates 20 to rotate, which can stir the jam, prevent the fruit pulp from depositing and coking, and keep the heat transfer uniform. The second driving motor 16 is a frequency conversion motor, which can automatically adjust the rotation speed according to the viscosity of the fruit pulp, and the rotation speed is 10 - 20 rpm;

[0039] A clamping cavity 31 is arranged inside the concentrated tank body 1. The concentrated tank body 1 is double-layered. The outer layer is made of heat-insulating material, and the inner layer is a 316L stainless steel tank body. A circulating heating assembly communicated with the clamping cavity 31 is installed on the concentrated tank body 1. The circulating heating assembly includes a first water storage tank 27 and a second water storage tank 28 installed at the upper and lower ends of the side wall of the concentrated tank body 1. The water outlet end of the first water storage tank 27 extends into the clamping cavity 31. The water inlet end of the second water storage tank 28 extends into the clamping cavity 31. Water pumps are installed in both the first water storage tank 27 and the second water storage tank 28, which can make the hot water circulate among the first water storage tank 27, the second water storage tank 28 and the clamping cavity 31 to heat the inside of the concentrated tank body 1. The first water storage tank 27 and the second water storage tank 28 are communicated with each other through a communicating pipe 30. The side wall of the communicating pipe 30 is wrapped with heat-insulating cotton, which can reduce heat dissipation. A heating box 29 is installed on the side wall of the communicating pipe 30. Electric heating wires are installed in the heating box 29, which can heat the water in the communicating pipe 30, so that 50 - 60 °C circulating hot water is passed through the clamping cavity 31, and local high-temperature coking is avoided through indirect heating;

[0040] An operation panel 25 is installed on the concentrator tank body 1. A plurality of support legs 26 are installed at the bottom of the concentrator tank body 1. A discharge pipe penetrates through the bottom of the concentrator tank body 1, and a control valve is installed on the discharge pipe. The bottom of the concentrator tank body 1 is tapered to facilitate the discharge of the concentrated pulp and reduce residue.

[0041] A vacuum pump 23 and a steam condenser 24 are installed on the sealing cover 2. The vacuum pump 23 maintains the vacuum degree in the tank at 0.08 - 0.09 MPa, reduces the boiling point to accelerate the evaporation of water, can reduce the generation of bubbles, and avoid the destruction of blueberry anthocyanins and aroma components at high temperatures. The steam condenser 24 recovers the evaporated water vapor. A refractometer and a temperature probe are installed in the concentrator tank body 1. The refractometer can monitor the sugar content (Brix value) of the pulp in real time and automatically stop concentration when reaching the upper or lower threshold. The temperature probe monitors the jacket temperature and the pulp temperature to prevent overheating.

[0042] The present invention also discloses a processing method for blueberry - flavored jam. The processing method includes the following steps:

[0043] S1. Raw material treatment: After the blueberries are cleaned by bubble cleaning and high - pressure spraying, they enter a stem - removing machine to remove the stems, and are processed into a pulp by a twin - screw crusher, which has the advantages of high efficiency and low breakage rate and is suitable for continuous production. Among them, the high - frequency bubbles generated by the bubble generator can remove impurities on the surface of the blueberries, and the high - pressure spraying device can further wash away the residual pesticides.

[0044] S2. Vacuum low - temperature concentration: Connect the delivery pipe to the rotary joint 12, and convey the pulpy blueberries and other raw materials to the feed pipe 6 through the delivery pipe and the rotary joint 12. Start the driving motor 13. Under the connection of the transmission belt 14, drive the feed pipe 6 to rotate. The pulpy blueberries enter the concentrator tank body 1 after being filtered through the filter screen 10 under the action of centrifugal force. Make the hot water circulate in the first water storage tank 27, the second water storage tank 28 and the clamping cavity 31, heat the concentrator tank body 1 to 55 - 60 °C. The vacuum pump 23 maintains the vacuum degree in the tank at 0.08 - 0.09 MPa to reduce the boiling point and accelerate the evaporation of water. The steam condenser 24 recovers the evaporated water vapor. The second driving motor 16 cooperates with the second cylinder 17 to drive the stirring rod 18 to rotate and move up and down reciprocally to stir the jam and prevent the pulp from depositing and coking. The refractometer detects the Brix value in real time. When the Brix value reaches 65% - 68%, the concentration is automatically terminated, and the blueberry pulp is discharged through the discharge pipe. Concentrating the jam at low temperature in a vacuum environment can retain the natural flavor and anthocyanins of the blueberries.

[0045] S3. Ultrasonic homogenization: The concentrated jam enters an ultrasonic homogenizer and is processed for 5 - 10 minutes to increase the viscosity of the jam to 1500 - 2000 mPa·s. Replacing chemical pectin with ultrasonic homogenization can reduce the use of additives and make the texture of the jam more delicate.

[0046] S4, Aseptic filling: The jam is transported to the filling system through aseptic pipelines and filled into pre-sterilized glass bottles in a Class 100 clean environment. The filling temperature is ≥85°C. After capping and sealing, the residual oxygen in the bottle is ≤1%;

[0047] S5, Sterilization and cooling: Keep warm for 10 minutes in a 90°C aseptic environment and then keep warm for 15 minutes in an 85°C aseptic environment, and then quickly cool to below 30°C. After cooling, randomly check the microbial indicators. The total number of colonies is ≤100 CFU / g, which can avoid secondary pollution and extend the shelf life;

[0048] S6, Packaging and quality inspection: After labeling and boxing, foreign objects are removed by an X-ray detector to complete the processing of blueberry-flavored jam.

[0049] As described above, it is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A blueberry flavored jam processing device, comprising a concentration tank body (1) and a sealing cover (2), characterized in that: The sealing cover (2) is connected to the concentrator tank body (1) by two telescopic components that are symmetrically arranged on the left and right, so that the sealing cover (2) can move up and down relative to the concentrator tank body (1); a feed pipe (6) extending into the concentrator tank body (1) is rotatably connected to the sealing cover (2); the feed pipe (6) is driven to rotate by a first drive motor (13); a filter component is installed in the feed pipe (6); a stirring component extending into the concentrator tank body (1) is installed on the sealing cover (2); the stirring component rotates and moves up and down to stir the blueberry jam; a clamping cavity (31) is provided in the concentrator tank body (1); a circulating heating component that is interconnected with the clamping cavity (31) is installed on the concentrator tank body (1); an operation panel (25) is installed on the concentrator tank body (1); a plurality of support legs (26) are installed at the bottom of the concentrator tank body (1); and a discharge pipe is installed at the bottom of the concentrator tank body (1).

2. A blueberry flavor jam processing device according to claim 1, characterized in that: The telescopic assembly comprises a first support plate (3) fixedly connected to the side wall of the concentration tank body (1); the side wall of the sealing cover (2) is fixedly connected to a second support plate (4); and a first cylinder (5) is installed between the first support plate (3) and the second support plate (4).

3. A blueberry flavor jam processing device according to claim 2, characterized in that: Transmission rollers are installed on the feed pipe (6) and the output shaft of the first drive motor (13), and the two transmission rollers are connected by a transmission belt (14).

4. The blueberry flavor jam processing device according to claim 3, characterized in that: The filter assembly comprises a cover body (7) detachably connected to a feed pipe (6); a connecting pipe (11) is installed through the cover body (7); the end of the connecting pipe (11) is connected to a rotary joint (12); the inside of the cover body (7) is fixedly connected to an external threaded ring (8) located below the connecting pipe (11); a filter frame (9) is threadedly connected to the external threaded ring (8); and a filter screen (10) is installed through the filter frame (9).

5. The blueberry flavor jam processing device according to claim 4, characterized in that: The stirring assembly comprises a U-shaped frame (15) mounted on the sealing cover (2), a second drive motor (16) being mounted on the inner top of the U-shaped frame (15), a support plate being mounted on the end of the output shaft of the second drive motor (16), a second cylinder (17) being mounted on the bottom of the support plate, a stirring rod (18) extending into the concentrator tank body (1) being fixedly connected to the telescopic end of the second cylinder (17), a plurality of stirring blades (19) being fixedly connected to the side wall of the stirring rod (18), and a plurality of scrapers (20) being fixedly connected to the side wall of the stirring rod (18) and abutting against the inner bottom of the concentrator tank body (1).

6. The blueberry flavor jam processing device according to claim 5, characterized in that: An annular groove is formed at the upper end of the sealing cover (2), and a support ring (21) fixedly connected to the side wall of the second cylinder (17) is sleeved thereon, and a plurality of connecting rods (22) extending into the annular groove and slidably connected to the bottom of the support ring (21) are fixedly connected thereto.

7. The blueberry flavor jam processing device according to claim 6, characterized in that: The circulating heating component comprises a first water storage tank (27) and a second water storage tank (28) installed at upper and lower ends of the side wall of the concentration tank body (1); the water outlet end of the first water storage tank (27) extends into the clamping cavity (31); the water inlet end of the second water storage tank (28) extends into the clamping cavity (31); the first water storage tank (27) and the second water storage tank (28) are connected to each other via a connecting pipe (30); a heating box (29) is installed on the side wall of the connecting pipe (30).

8. The blueberry flavor jam processing device according to claim 7, characterized in that: A vacuum pump (23) and a steam condenser (24) are installed on the sealing cover (2), and a refractometer and a temperature probe are installed in the concentrator tank body (1).

9. A method for processing blueberry flavored jam, wherein the method uses the blueberry flavored jam processing device according to claim 8, characterized in that: The processing method comprises the following steps: S1. Raw material processing: After the blueberries are cleaned with bubbles and sprayed with high pressure, they are sent to a stem remover to remove the stems, and processed into a pulp by a twin-screw crusher; S2, vacuum low-temperature concentration: connect the conveying pipe to the rotary joint (12), convey the pulped blueberries and other raw materials to the feed pipe (6) through the conveying pipe and the rotary joint (12), start the driving motor (13), and drive the feed pipe (6) to rotate under the connection of the transmission belt (14), so that the pulped blueberries are filtered through the filter screen (10) under the action of centrifugal force and then enter the concentration tank body (1), so that hot water is stored in the first water storage tank (27), the second water storage tank (28) and the clamping chamber (31). The inner circulation flow heats the concentration tank body (1) to 55-60° C., the vacuum pump (23) maintains the vacuum degree in the tank at 0.08-0.09 MPa, the steam condenser (24) recovers the evaporated water vapor, the second drive motor (16) cooperates with the second cylinder (17) to drive the stirring rod (18) to rotate and move up and down to stir the jam, the refractometer detects the solid content value in real time, and when the solid content reaches 65%-68%, the concentration is automatically terminated, and the blueberry pulp is discharged through the discharge pipe; S3, ultrasonic homogenization: the concentrated jam enters the ultrasonic homogenizer for 5-10 minutes to increase the viscosity of the jam to 1500-2000mPa·s; S4, aseptic filling: The jam is transported to the filling system through aseptic pipes and filled into pre-sterilized glass bottles in a Class 100 clean environment. The filling temperature is ≥85℃. After the cap is screwed and sealed, the residual oxygen in the bottle is ≤1%; S5. Sterilization and cooling: Keep the mixture in a sterile environment at 90°C for 10 minutes, then keep it in a sterile environment at 85°C for 15 minutes, and then quickly cool it to below 30°C. After cooling, check the microbial indicators and the total colony count should be ≤100CFU / g. S6, Packaging and quality inspection: After labeling and packing, foreign matter is removed through an X-ray detector to complete the processing of blueberry flavored jam.

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