Composite fresh-keeping device and method based on selenium-enriched Dongmei jujubes

Abstract

The invention belongs to the technical field of jujube preservation, and particularly relates to a composite preservation device and method based on selenium-rich Dongmei jujubes, the composite preservation device comprises a footstone table, the upper surface of the footstone table is fixedly connected with a spraying frame and an air-conditioned warehouse, the inner wall of the spraying frame is provided with a conveyor, and the upper surface of the spraying frame is fixedly connected with a glycerin liquid storage tank; a glycerin liquid storage tank is arranged in the spraying frame, 5% glycerin liquid is arranged in the glycerin liquid storage tank, a liquid pump is fixedly connected to the front face of the glycerin liquid storage tank, the input end of the liquid pump is fixedly communicated with a liquid pumping pipe, the input end of the liquid pumping pipe is fixedly communicated with the front face of the glycerin liquid storage tank, and a glycerin spraying pipe is fixedly embedded in the inner top wall of the spraying frame. According to the method, the jujubes are preserved by combining the post-harvest glycerin spraying treatment and the controlled atmosphere low-temperature preservation treatment, the storage time of the jujubes is greatly prolonged through a composite treatment method composed of glycerin, low-temperature gas components and gas components, the decay rate of the jujubes is greatly delayed, and effective preservation and storage of the jujubes are facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of jujube preservation, and in particular to a composite preservation device and method based on selenium-rich Dongmei jujube. Background Art

[0002] Selenium-rich jujubes refer to jujubes containing the trace element selenium. Jujubes can be divided into red dates, gray dates, green dates, etc., and their origins are different. Jujubes from Xinjiang and Shandong are the most famous. Among them, the selenium-rich Dongmei dates are a new variety of local tooth-changing dates. Selenium-rich Dongmei dates are rich in selenium, have thin skin, small core, crispy flesh, and a sugar content of up to 16 to 17%, which is deeply loved by consumers.

[0003] During the picking, transportation and sales of selenium-rich Dongmei dates, the dates often need to be preserved. Currently, the preservation of dates mostly relies on a single technology, such as controlled atmosphere preservation, biological preservation, physical preservation and other single preservation methods. The preservation effect of dates with a single preservation technology is poor, and the texture, color, taste and nutrition of the dates cannot be effectively maintained, which greatly reduces the shelf life of the dates and is not convenient for the long-term preservation of the dates. For this reason, we provide a composite preservation device and method based on selenium-rich Dongmei dates to solve the above problems. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a composite preservation device and method based on selenium-rich Dongmei dates, which solves the problem that the current preservation of dates mostly relies on a single technology, such as controlled atmosphere preservation, biological preservation, physical preservation and other single preservation methods. The preservation effect of dates with single preservation technology is poor, and the texture, color, taste and nutrition of the dates cannot be effectively maintained, which greatly reduces the shelf life of the dates and is not convenient for long-term preservation of the dates.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a composite preservation device and method based on selenium-rich Dongmei dates, comprising a base stone table, the upper surface of the base stone table is fixedly connected with a spray frame and an atmosphere control reservoir, the inner wall of the spray frame is installed with a conveyor, the upper surface of the spray frame is fixedly connected with a glycerin storage tank, the interior of the glycerin storage tank is provided with 5% glycerin liquid, the front of the glycerin storage tank is fixedly connected with a liquid pump, the input end of the liquid pump is fixedly connected with a liquid pumping pipe, the input end of the liquid pumping pipe is fixedly connected with the front of the glycerin storage tank, the inner top wall of the spray frame is fixedly inlaid with a glycerin spraying pipe, the bottom surface of the glycerin spraying pipe is fixedly connected with a group of spraying nozzles, the input end of the glycerin spraying pipe passes through the spray frame and is fixedly connected with the output end of the liquid pump, A refrigerator is fixedly embedded on the upper surface of the gas-controlled storage, and the cooling end of the refrigerator is located inside the gas-controlled storage. An oxygen storage tank and a carbon dioxide storage tank are fixedly connected to the back of the gas-controlled storage. Two T-shaped jet pipes are fixedly embedded on the inner top wall of the gas-controlled storage, and the input ends of the two T-shaped jet pipes are fixedly connected to the output end of the oxygen storage tank and the input end of the carbon dioxide storage tank respectively. The bottom surface of each of the T-shaped jet pipes is fixedly connected to a group of jet nozzles, and the outer surface of the top of the oxygen storage tank and the outer surface of the top of the carbon dioxide storage tank are fixedly connected to an electromagnetic valve. An oxygen concentration monitoring sensor and a carbon dioxide concentration monitoring sensor are fixedly embedded on the upper surface of the gas-controlled storage, and a temperature monitoring sensor is fixedly embedded on the left side of the concentration monitoring sensor. A sealed cabin door is installed on the right side of the gas-controlled storage.

[0006] As a preferred technical solution of the present invention, a PLC editing controller is fixedly connected to the right side of the sealed cabin door, and the PLC editing controller is electrically connected to the oxygen concentration monitoring sensor, the carbon dioxide concentration monitoring sensor and the temperature monitoring sensor through wires.

[0007] As a preferred technical solution of the present invention, an observation frame is fixedly embedded on the right side of the sealed cabin door, and an opening and closing handle is fixedly connected to the right side of the sealed cabin door.

[0008] As a preferred technical solution of the present invention, an alarm is fixedly connected to the front and back of the controlled atmosphere storage, and the alarm is electrically connected to the PLC editing controller through a wire.

[0009] As a preferred technical solution of the present invention, a water observation window is fixedly embedded on the left side of the glycerin liquid storage tank, and the water observation window is located in the middle of the glycerin liquid storage tank.

[0010] As a preferred technical solution of the present invention, an illuminating lamp is fixedly connected to the inner wall of the controlled atmosphere storage, and the illuminating lamp is an LED lamp.

[0011] As a preferred technical solution of the present invention, two placement racks are provided inside the controlled atmosphere storage, and a group of placement plates are fixedly connected to the inner wall of each of the placement racks.

[0012] As a preferred technical solution of the present invention, a group of slopes are fixedly connected to the outer surface of the foundation stone platform, and the slopes are made of concrete.

[0013] As a preferred technical solution of the present invention, a moisture-proof pad is fixedly connected to the bottom surface of the base stone platform.

[0014] As a preferred technical solution of the present invention, a composite preservation method based on selenium-rich Dongmei dates:

[0015] S1. First, put the newly picked Dongmei dates that are 70% to 80% mature into cold storage to remove the field heat;

[0016] S2, washing the jujubes and sterilizing them with 75% alcohol, and air-drying them to achieve sterilization and disinfection of the jujubes;

[0017] S3, using a liquid pump to extract 5% glycerol liquid through a liquid pumping pipe, spraying it through a glycerol spraying pipe and a spraying nozzle, so as to fully spray the surface of the jujube with 5% glycerol, and placing the Dongmei jujube at room temperature for 24 hours to complete the preservation treatment of the jujube biological preservative;

[0018] S4, placing the treated Dongmei jujube in a controlled atmosphere storage set at an oxygen concentration of 1%-3% v / v, a carbon dioxide concentration of 2%-5% v / v and a low temperature of 2°C for preservation treatment, so as to inhibit the respiration of the jujube cells to delay their metabolic process, put them in a near-dormant state, and achieve physical preservation of the jujube;

[0019] S5. Preservation of the dates by spraying glycerol and combining it with controlled atmosphere and low temperature preservation treatment, thereby achieving effective storage of the dates.

[0020] Compared with the prior art, the present invention provides a composite fresh-keeping device and method based on selenium-rich Dongmei dates, which has the following beneficial effects:

[0021] 1. The composite preservation device and method based on selenium-rich Dongmei dates can spray glycerol on Dongmei dates by setting a glycerol storage tank, a liquid pump, a liquid pumping pipe, a glycerol spraying pipe and a spraying nozzle. It has a moisturizing effect, making the dates more palatable, and can also bring a certain sweetness and smooth taste to the dates. At the same time, by maintaining the moisture balance inside the dates, glycerol can also inhibit the growth of microorganisms to a certain extent, thereby extending the shelf life of the dates.

[0022] 2. The composite preservation device and method based on selenium-rich Dongmei dates can spray a certain concentration of oxygen and carbon dioxide into the atmosphere control storage and adjust a certain temperature by setting an atmosphere control storage, an oxygen storage tank, a carbon dioxide storage tank, an electromagnetic gas valve, a refrigerator, an oxygen concentration monitoring sensor, a carbon dioxide concentration monitoring sensor, a temperature monitoring sensor, a T-shaped jet pipe and an air nozzle. The device and method can inhibit the respiration of date cells to delay their metabolic process and put them in a near-dormant state, thereby maintaining the texture, color, taste, nutrition, etc. of the dates basically unchanged for a long time, thereby achieving the beneficial effect of long-term preservation.

[0023] 3. The composite preservation device and method based on selenium-rich Dongmei dates can preserve the dates in combination with post-harvest glycerol spraying treatment and atmosphere-controlled low-temperature preservation treatment. The composite treatment method consisting of glycerol, low temperature and gas components can greatly extend the storage time of the dates, greatly slow down the rate of decay of the dates, and facilitate the effective preservation and storage of the dates. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a composite fresh-keeping device based on selenium-rich Dongmei dates of the present invention;

[0025] Figure 2 It is a side view of the spraying frame of the present invention;

[0026] Figure 3 It is a rear view of the gas conditioning storage of the present invention;

[0027] Figure 4 It is a schematic diagram of the internal structure of the gas conditioning storage of the present invention;

[0028] Figure 5 It is a cross-sectional view of the top view of the controlled atmosphere storage of the present invention;

[0029] Figure 6 It is a sectional view of the side view of the spray frame of the present invention.

[0030] In the figure: 1. foundation stone platform; 2. gas conditioning storage; 3. spraying frame; 4. conveyor; 5. glycerol spraying pipe; 6. liquid extraction pipe; 7. liquid extraction pump; 8. T-type jet pipe; 9. oxygen concentration monitoring sensor; 10. carbon dioxide concentration monitoring sensor; 11. refrigerator; 12. spray nozzle; 13. sealed hatch; 14. observation frame; 15. opening and closing handle; 16. PLC editing controller; 17. ramp; 18. alarm; 19. glycerol storage tank; 20. water observation window; 21. solenoid valve; 22. carbon dioxide storage tank; 23. oxygen storage tank; 24. moisture-proof mat; 25. placement rack; 26. placement board; 27. lighting; 28. jet nozzle; 29. ​​temperature monitoring sensor. DETAILED DESCRIPTION

[0031] 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.

[0032] Example

[0033] See also Figure 1-6 In this embodiment: a composite preservation device and method based on selenium-rich Dongmei dates, comprising a base stone platform 1, a spray frame 3 and an atmosphere control storage 2 are fixedly connected to the upper surface of the base stone platform 1, a conveyor 4 is installed on the inner wall of the spray frame 3, a glycerin storage tank 19 is fixedly connected to the upper surface of the spray frame 3, a 5% glycerin liquid is arranged inside the glycerin storage tank 19, a liquid extraction pump 7 is fixedly connected to the front of the glycerin storage tank 19, a liquid extraction pipe 6 is fixedly connected to the input end of the liquid extraction pump 7, and the input end of the liquid extraction pipe 6 is fixedly connected to the front of the glycerin storage tank 19, a glycerin spray pipe 5 is fixedly inlaid on the inner top wall of the spray frame 3, a group of spray nozzles 12 are fixedly connected to the bottom surface of the glycerin spray pipe 5, the input end of the glycerin spray pipe 5 passes through the spray frame 3 and is fixedly connected to the output end of the liquid extraction pump 7, and the upper surface of the atmosphere control storage 2 is fixedly inlaid with A refrigerator 11, the refrigeration end of the refrigerator 11 is located inside the gas-controlled storage 2, the back of the gas-controlled storage 2 is fixedly connected with an oxygen storage tank 23 and a carbon dioxide storage tank 22, the inner top wall of the gas-controlled storage 2 is fixedly inlaid with two T-shaped jet pipes 8, the input ends of the two T-shaped jet pipes 8 are fixedly connected with the output end of the oxygen storage tank 23 and the input end of the carbon dioxide storage tank 22 respectively, the bottom surface of each T-shaped jet pipe 8 is fixedly connected with a group of jet nozzles 28, the outer surface of the top end of the oxygen storage tank 23 and the outer surface of the top end of the carbon dioxide storage tank 22 are fixedly connected with an electromagnetic valve 21, the upper surface of the gas-controlled storage 2 is fixedly inlaid with an oxygen concentration monitoring sensor 9 and a carbon dioxide concentration monitoring sensor 10, the left side of the concentration monitoring sensor is fixedly inlaid with a temperature monitoring sensor 29, and the right side of the gas-controlled storage 2 is installed with a sealed cabin door 13.

[0034] In this embodiment, a PLC editing controller 16 is fixedly connected to the right side of the sealed cabin door 13, and the PLC editing controller 16 is electrically connected to the oxygen concentration monitoring sensor 9, the carbon dioxide concentration monitoring sensor 10 and the temperature monitoring sensor 29 through wires, so that the staff can control the device more conveniently, which is convenient for the preservation operation of the dates. An observation frame 14 is fixedly embedded on the right side of the sealed cabin door 13, and an opening and closing handle 15 is fixedly connected to the right side of the sealed cabin door 13, which can conveniently open the sealed cabin door 13 to facilitate the taking and placing of the dates. An alarm 18 is fixedly connected to the front and back of the controlled atmosphere storage 2, and the alarm 18 is electrically connected to the PLC editing controller 16 through wires, which can perform environmental monitoring and alarm, which is convenient for the effective preservation and storage of the dates. A water observation window 20 is fixedly embedded on the left side of the glycerin storage tank 19, and the water observation window 20 is located in the middle of the glycerin storage tank 19, so that the interior of the glycerin storage tank 19 can be observed, thereby increasing the observation function of the glycerin storage tank 19.

[0035] In this embodiment, the inner wall of the controlled atmosphere storage 2 is fixedly connected with a lighting lamp 27, which is an LED lamp and can provide lighting for the interior of the controlled atmosphere storage 2 to facilitate the storage of dates. Two placement racks 25 are provided inside the controlled atmosphere storage 2, and the inner wall of each placement rack 25 is fixedly connected with a group of placement plates 26 for storing and placing dates. The outer surface of the foundation stone platform 1 is fixedly connected with a group of ramps 17, and the ramps 17 are made of concrete to facilitate the movement and transportation of dates. The bottom surface of the foundation stone platform 1 is fixedly connected with a moisture-proof pad 24, which can increase the moisture-proof function of the foundation stone platform 1 and avoid moisture in the controlled atmosphere storage 2.

[0036] In this embodiment, a composite preservation method based on selenium-rich Dongmei dates is provided.

[0037] S1. First, put the newly picked Dongmei dates that are 70% to 80% mature into cold storage to remove the field heat;

[0038] S2, washing the jujubes and sterilizing them with 75% alcohol, and air-drying and sterilizing them;

[0039] S3, using the liquid pump 7 to extract 5% glycerol liquid through the liquid pumping pipe 6, spraying it through the glycerol spraying pipe 5 and the spraying nozzle 12, so as to fully spray the surface of the jujube with 5% glycerol, and leaving the Dongmei jujube at room temperature for 24 hours to complete the preservation treatment of the jujube biological preservative;

[0040] S4, placing the treated Dongmei jujube in a controlled atmosphere storage 2 set at an oxygen concentration of 1%-3% v / v, a carbon dioxide concentration of 2%-5% v / v and a low temperature of 2°C for preservation treatment, so as to inhibit the respiration of the jujube cells to delay their metabolic process, put them in a near-dormant state, and achieve physical preservation of the jujube;

[0041] S5. Preservation of the dates by spraying glycerol and combining it with controlled atmosphere and low temperature preservation treatment, thereby achieving effective storage of the dates.

[0042] The working principle and use process of the present invention are as follows: first, newly picked Dongmei dates that are 70% to 80% mature are placed in a cold storage to remove field heat, then the dates are washed and sterilized with 75% alcohol and air-dried, then a liquid pump 7 is used to extract 5% glycerol liquid through a liquid pumping pipe 6, and the liquid is sprayed through a glycerol spraying pipe 5 and a spraying nozzle 12, so that the surface of the dates is fully sprayed with 5% glycerol. In addition to having a moisturizing effect, glycerol significantly improves the texture of the dates and makes the dates more palatable, and can also bring a certain sweetness and smooth taste to the dates. At the same time, by maintaining the water balance inside the dates, glycerol can also inhibit the growth of microorganisms to a certain extent, thereby extending the shelf life of the dates and achieving The biological preservative of the dates is then placed at room temperature for 24 hours, and the treated Dongmei dates are placed in a controlled atmosphere storage 2 set with an oxygen concentration of 1%-3% v / v, a carbon dioxide concentration of 2%-5% v / v and a low temperature of 2°C for preservation. The respiration of the date cells is inhibited to delay their metabolic process, so that they are in a near-dormant state rather than a cell death state, thereby being able to keep the texture, color, taste, nutrition, etc. of the dates basically unchanged for a long time, thereby achieving the effect of long-term preservation, realizing the physical preservation of the dates, and then realizing glycerol spraying treatment and combining the controlled atmosphere low-temperature preservation treatment to preserve the dates, thereby realizing the effective storage of the dates.

[0043] In the description of the present invention, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprising a reference structure" do not exclude the presence of other identical elements in the process, method, article or device comprising the elements. It should be noted that, in this article, relational terms such as "first", "second", etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A composite fresh-keeping device based on selenium-rich Dongmei dates, comprising a base stone table (1), characterized in that: The upper surface of the foundation stone platform (1) is fixedly connected to a spray frame (3) and an atmosphere control reservoir (2); a conveyor (4) is installed on the inner wall of the spray frame (3); a glycerin liquid storage tank (19) is fixedly connected to the upper surface of the spray frame (3); a 5% glycerin liquid is provided inside the glycerin liquid storage tank (19); a liquid extraction pump (7) is fixedly connected to the front of the glycerin liquid storage tank (19); an input end of the liquid extraction pump (7) is fixedly connected to a liquid extraction pipe (6); The input end of the liquid extraction pipe (6) is fixedly connected to the front of the glycerin storage tank (19), the inner top wall of the spray frame (3) is fixedly inlaid with a glycerin spray pipe (5), the bottom surface of the glycerin spray pipe (5) is fixedly connected to a group of spray nozzles (12), the input end of the glycerin spray pipe (5) passes through the spray frame (3) and is fixedly connected to the output end of the liquid extraction pump (7), the upper surface of the gas conditioning storage (2) is fixedly inlaid with a refrigerator (11), and the refrigerator (12) is fixedly connected to the bottom surface of the glycerin spray pipe (5). 1) is located inside the gas conditioning storehouse (2), the back of the gas conditioning storehouse (2) is fixedly connected with an oxygen storage tank (23) and a carbon dioxide storage tank (22), the inner top wall of the gas conditioning storehouse (2) is fixedly inlaid with two T-shaped jet pipes (8), the input ends of the two T-shaped jet pipes (8) are fixedly connected with the output end of the oxygen storage tank (23) and the input end of the carbon dioxide storage tank (22), respectively, the bottom surface of each T-shaped jet pipe (8) is fixedly connected with a group of jet nozzles (28), the outer surface of the top of the oxygen storage tank (23) and the outer surface of the top of the carbon dioxide storage tank (22) are fixedly connected with an electromagnetic valve (21), the upper surface of the gas conditioning storehouse (2) is fixedly inlaid with an oxygen concentration monitoring sensor (9) and a carbon dioxide concentration monitoring sensor (10), the left side of the concentration monitoring sensor is fixedly inlaid with a temperature monitoring sensor (29), and the right side of the gas conditioning storehouse (2) is installed with a sealed cabin door (13).

2. A composite fresh-keeping device based on selenium-rich Dongmei dates according to claim 1, characterized in that: A PLC editing controller (16) is fixedly connected to the right side of the sealed cabin door (13), and the PLC editing controller (16) is electrically connected to an oxygen concentration monitoring sensor (9), a carbon dioxide concentration monitoring sensor (10) and a temperature monitoring sensor (29) via wires.

3. A composite fresh-keeping device based on selenium-rich Dongmei dates according to claim 1, characterized in that: An observation frame (14) is fixedly embedded on the right side of the sealed cabin door (13), and an opening and closing handle (15) is fixedly connected to the right side of the sealed cabin door (13).

4. The composite fresh-keeping device based on selenium-rich Dongmei dates according to claim 1, characterized in that: The front side of the controlled atmosphere storage (2) and the back side of the controlled atmosphere storage (2) are both fixedly connected with an alarm (18), and the alarm (18) is electrically connected to the PLC editing controller (16) via a wire.

5. The composite fresh-keeping device based on selenium-rich Dongmei dates according to claim 1, characterized in that: A water observation window (20) is fixedly embedded on the left side of the glycerin liquid storage tank (19), and the water observation window (20) is located in the middle of the glycerin liquid storage tank (19).

6. The composite fresh-keeping device based on selenium-rich Dongmei dates according to claim 1, characterized in that: An illuminating lamp (27) is fixedly connected to the inner wall of the controlled atmosphere storage (2), and the illuminating lamp (27) is an LED lamp.

7. The composite fresh-keeping device based on selenium-rich Dongmei dates according to claim 1, characterized in that: Two placement racks (25) are arranged inside the atmosphere-controlled storage (2), and a group of placement plates (26) are fixedly connected to the inner wall of each placement rack (25).

8. The composite fresh-keeping device based on selenium-rich Dongmei dates according to claim 1, characterized in that: A group of ramps (17) are fixedly connected to the outer surface of the foundation stone platform (1), and the ramps (17) are made of concrete.

9. The composite fresh-keeping device based on selenium-rich Dongmei dates according to claim 1, characterized in that: A moisture-proof pad (24) is fixedly connected to the bottom surface of the foundation stone platform (1).

10. A composite preservation method based on selenium-rich Dongmei dates according to claim 1, characterized in that: S1. First, put the newly picked Dongmei dates that are 70% to 80% mature into cold storage to remove the field heat; S2, washing the jujubes and sterilizing them with 75% alcohol, and air-drying them to achieve sterilization and disinfection of the jujubes; S3, using the liquid extraction pump (7) to extract 5% glycerol liquid through the liquid extraction pipe (6), and spraying it through the glycerol spraying pipe (5) and the spraying nozzle (12), so as to fully spray the surface of the jujube with 5% glycerol, and leaving the Dongmei jujube at room temperature for 24 hours, so as to complete the preservation treatment of the jujube biological preservative; S4, placing the treated Dongmei dates in a controlled atmosphere storage (2) set at an oxygen concentration of 1%-3% v / v, a carbon dioxide concentration of 2%-5% v / v and a low temperature of 2° C. for preservation treatment, so as to inhibit the respiration of the date cells and delay their metabolic process, so that they are in a near-dormant state, thereby achieving physical preservation treatment of the dates; S5. Preservation of the dates by spraying glycerol and combining it with controlled atmosphere and low temperature preservation treatment, thereby achieving effective storage of the dates.

Images