Method and device for low-temperature rapid denucleation of cornus officinalis

Abstract

The application belongs to the technical field of Chinese herbal medicine picking and processing, and particularly relates to a low-temperature and rapid de-nucleation method and equipment for cornus officinalis, which comprises the following steps: low-temperature heating of cornus officinalis, heating of the cornus officinalis to a de-nucleation temperature, expansion of the cornus officinalis at the de-nucleation temperature in a vacuum environment, separation of the pulp and the kernel of the cornus officinalis, and manual or mechanical de-nucleation. The low-temperature and rapid de-nucleation method for cornus officinalis adopts a low-temperature heating and vacuum expansion mode to complete de-nucleation, the whole heating process of the cornus officinalis is controlled at a low-temperature state, which is much lower than the traditional 100 DEG C or even higher temperature of water boiling and steaming, and thus the anthocyanins, iridoid glycosides and other heat-sensitive active ingredients in the cornus officinalis can be retained to the maximum extent, the loss of beneficial ingredients is reduced, the medicinal and nutritional value of the pulp of the cornus officinalis after de-nucleation is effectively improved, and the quality of the finished product is ensured.

Description

Technical Field

[0001] This invention belongs to the field of traditional Chinese medicine harvesting and processing technology, specifically relating to a method and equipment for rapid depitting of Cornus officinalis at low temperature. Background Technology

[0002] Cornus officinalis is a traditional and commonly used Chinese medicinal herb. The medicinal part is the dried, mature fruit pulp, which has the effects of tonifying the liver and kidneys, and astringing and consolidating the body, and has high medicinal value. After harvesting the Cornus officinalis fruit, the pits need to be removed to obtain the pulp. The efficiency and quality of the pitting process directly affect the efficacy and commercial value of the final product.

[0003] The existing method for removing the pits from Cornus officinalis fruits is as follows: fresh Cornus officinalis fruits picked from the mountains are washed, boiled or steamed, cooled, and then the pits are removed manually or automatically by machine; they are then naturally sun-dried or oven-dried and sold as medicinal materials.

[0004] In the existing pitting process, boiling or steaming is used to minimize the amount of pulp remaining on the pit and increase the yield. This is because the pit of Cornus officinalis has a woody fibrous structure with a water content of about 25%, while the pulp has a water content of 90%. The different water contents of the pulp and the pit result in different expansion rates and expansion coefficients during boiling or steaming, leading to different stresses during heating and causing the pulp to separate from the pit.

[0005] Existing methods for removing the pits from Cornus officinalis can be achieved using a kitchen stove, with boiling and steaming being common cooking methods that are easy to implement.

[0006] However, existing methods have the following shortcomings: The boiling process uses a temperature of around 100 degrees Celsius, while the steaming temperature on a household stove is around 120 degrees Celsius. At these temperatures, anthocyanins and iridoid glycosides in Cornus officinalis are easily hydrolyzed and lost; in particular, when the temperature exceeds 80 degrees Celsius, the anthocyanin content in the Cornus officinalis juice almost drops to zero. Furthermore, the operation in home kitchens is often inconsistent and arbitrary in terms of water volume, cooking time, and temperature control, resulting in inconsistent processing quality of Cornus officinalis. Summary of the Invention

[0007] The present invention aims to provide a method and equipment for rapid low-temperature de-pitting of Cornus officinalis, in order to solve the technical problem that existing de-pitting methods of Cornus officinalis lead to excessive loss of beneficial components such as anthocyanins, resulting in a decrease in the quality of processed Cornus officinalis.

[0008] With the development of traditional Chinese medicine and people's pursuit of health, foods that are both food and medicine are gaining increasing popularity. The nutritional value and health benefits of Cornus officinalis are also attracting more attention. Therefore, achieving quality control and preserving its nutrients during processing is becoming increasingly important. Traditional home kitchen processing methods are no longer sufficient to meet quality requirements. With the development of new technologies, equipment, and science, technologies such as vacuum processing, constant temperature control, and PLC control have been applied to processing equipment, enabling unconventional methods to effectively remove the pits from Cornus officinalis.

[0009] To achieve the above objectives, the present invention adopts the following technical solution: A method for rapid depigmentation of Cornus officinalis at low temperature is provided, comprising: (1) The cornelian cherry is heated at a low temperature until it reaches the temperature at which the kernel can be removed; (2) The cornelian cherry fruit at the pitting temperature is expanded in a vacuum environment, the vacuum degree of which corresponds to the pitting temperature, so that the pulp of the cornelian cherry fruit is separated from the seed kernel, and then the pit is removed manually or by machine.

[0010] Preferably, the nucleation temperature is 50℃~80℃; and the vacuum level of the vacuum environment is -0.09Mpa~-0.055Mpa.

[0011] Preferably, the nucleation temperature is 60°C; and the vacuum level of the vacuum environment is -0.08 MPa.

[0012] Preferably, step (1) specifically includes: collecting the harvested fresh Cornus officinalis fruits, sorting out the fruits to remove bad fruits and miscellaneous leaves, and washing them clean; spreading the cleaned Cornus officinalis fruits flat on a stainless steel tray, placing the stainless steel tray containing the Cornus officinalis fruits into a vacuum steamer for low-temperature heating, starting the timer when the temperature inside the vacuum steamer reaches the pitting temperature, maintaining a constant temperature for 15 to 25 minutes, so that each Cornus officinalis fruit pulp is heated evenly; Step (2) specifically includes: after the timing is completed, the valve of the vacuum storage tank connected to the vacuum steamer is opened, and the pressure is released under the action of the vacuum storage tank, so that the pressure in the vacuum steamer drops rapidly, and the water in the flesh of Cornus officinalis expands rapidly, and under the expansion stress, it separates from the daughter kernel to achieve dekernating.

[0013] Preferably, the time for maintaining the constant temperature is 20 minutes; the denucleation temperature is 60°C; and the vacuum storage tank causes the pressure inside the vacuum steamer to drop rapidly to -0.08 MPa.

[0014] This invention also provides a device for rapid low-temperature depitting of Cornus officinalis, comprising: A vacuum steamer is used to heat Cornus officinalis at low temperatures, bringing it to a temperature at which the kernels can be removed. A vacuum storage tank is connected to a vacuum pump and a pressure sensor; a vacuum steamer is connected to the vacuum storage tank via a pipe, and a valve is provided on the pipe; the vacuum storage tank is used to create a vacuum environment for the vacuum steamer, so as to expand and remove the kernels of the dogwood at the kernel removal temperature in the vacuum environment.

[0015] Preferably, it also includes a PLC controller; the temperature sensor and steam generation module in the vacuum steamer are electrically connected to the PLC controller; the valve is a solenoid valve electrically connected to the PLC controller; the vacuum pump and pressure sensor are electrically connected to the PLC controller.

[0016] Preferably, it also includes a container, in which the vacuum steamer and vacuum storage tank are housed. Compared with the prior art, the beneficial effects of the present invention are: 1. This method for rapid depitting of Cornus officinalis at low temperature uses a combination of low-temperature heating and vacuum expansion to complete the depitting process. The heating temperature of Cornus officinalis is controlled at a low temperature throughout the process, which is far lower than the 100℃ or even higher temperature of traditional boiling and steaming. This method can retain the heat-sensitive active ingredients such as anthocyanins and iridoid glycosides (monoside, loganin) in Cornus officinalis to the greatest extent, reduce the loss of beneficial components, effectively improve the medicinal and nutritional value of Cornus officinalis pulp after depitting, and ensure the quality of the finished product.

[0017] 2. This method achieves automated and precise control of temperature, pressure, and constant temperature time throughout the entire processing process through a PLC controller, avoiding the problem of non-standard parameter control in traditional manual processing. The pitting effect is stable, and the product quality is uniform. At the same time, the stress generated by vacuum expansion can make the pulp and pit separate more thoroughly, effectively reducing pulp residue on the pit and improving the pulp yield.

[0018] 3. The equipment for rapid depitting of Cornus officinalis at low temperature can be integrated into a container, making it highly mobile and capable of being deployed directly in the Cornus officinalis producing area. This enables on-site processing after harvesting, reducing losses and costs in the transportation and transshipment of fresh fruit. It is suitable for large-scale and standardized processing in the producing area, meeting the current demand for standardized and high-quality production in the processing of Chinese medicinal materials. Attached Figure Description

[0019] The present invention will be explained in detail below with reference to the accompanying drawings. It should be noted that the drawings are used to provide a further understanding of the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but should not impose any limitation on the implementability of the present invention.

[0020] In the attached diagram: Figure 1 This is a flowchart of an embodiment of the method for rapid denuclearization of Cornus officinalis according to the present invention.

[0021] Figure 2 The results show the determination of mononoside and loganin content in Cornus officinalis seeds de-nucleated at different temperatures.

[0022] Figure 3 This is a schematic diagram of an embodiment of the low-temperature rapid depitting device for Cornus officinalis according to the present invention. Detailed Implementation

[0023] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0024] Example 1: A method for rapid decarburization of Cornus officinalis at low temperature The method for rapid depigmentation of Cornus officinalis at low temperature includes the following steps: (1) The cornelian cherry is heated at a low temperature until it reaches the temperature at which the kernel can be removed.

[0025] The pitting temperature in this step refers to the temperature at which the Cornus officinalis fruit is heated (60°C in this embodiment) to a temperature at which the pulp expands and separates from the seed at a corresponding vacuum level (-0.08 MPa in this embodiment). Different pitting temperatures correspond to different vacuum levels; the higher the pitting temperature, the higher the corresponding vacuum level. This is because the boiling point of water in the Cornus officinalis pulp increases with increasing air pressure.

[0026] Combination Figure 1 As shown, the specific steps include: collecting the freshly picked Cornus officinalis fruits, sorting out the fruits to remove damaged fruits and miscellaneous leaves, rinsing them with clean water, spreading them flat on a stainless steel tray, and placing the tray containing the Cornus officinalis fruits into a vacuum steamer; closing the cabinet door and pressing the start button, the PLC controller of the vacuum steamer will first start its steam generation module to work, heating the Cornus officinalis fruits by generating water steam. When the water steam temperature reaches 60℃, the timer starts and the temperature is maintained at 60℃ for 20 minutes to ensure that each Cornus officinalis fruit is heated evenly.

[0027] The vacuum steamer mentioned here refers to a steamer that can create negative pressure and has good sealing properties.

[0028] (2) The cornelian cherry at the de-kerneling temperature is expanded in a vacuum environment. The vacuum degree of the vacuum environment corresponds to the de-kerneling temperature mentioned above. For example, when the temperature of the cornelian cherry is 60°C, in a vacuum environment with a vacuum degree of -0.08 MPa, the water in the pulp of the cornelian cherry boils and expands, causing the pulp of the cornelian cherry to separate from the kernel. Then the kernel can be removed manually or by machine.

[0029] Combination Figure 1 As shown, the specific steps include: after the timing of maintaining a constant temperature of 60°C for 20 minutes in step (1) is completed, the valve of the vacuum storage tank connected to the vacuum steamer is opened, and the pressure is released under the action of the vacuum storage tank. The vacuum steamer is then subjected to negative pressure by the vacuum storage tank, causing the pressure inside the cabinet to drop rapidly to -0.08Mpa. The vacuum degree of -0.08Mpa corresponds to the boiling temperature of water of about 60 degrees Celsius, which causes the water in the flesh of Cornus officinalis to expand rapidly and separate from the kernel under the expansion stress. Then, the kernel can be removed manually or by machine.

[0030] In this step (2), the pressure inside the vacuum steamer must not be too low, otherwise the Cornus officinalis will burst. The pressure control inside the vacuum storage tank and the vacuum steamer is also controlled by a PLC controller. Because the flesh expands instantly, this method is more effective at removing the pits than ordinary boiling and steaming. It is easier to manually or mechanically squeeze out the pits later. Moreover, low-temperature heating will not cause excessive loss of beneficial substances from the Cornus officinalis flesh, thus ensuring the quality of the flesh.

[0031] Based on the above embodiments, the main idea of ​​the low-temperature rapid de-pitting method for Cornus officinalis is as follows: Utilizing the physical principle that the evaporation temperature of water decreases with decreasing pressure, and combined with PLC automation control technology to precisely control temperature and pressure, the Cornus officinalis is de-pitted under a negative pressure environment (-0.08 MPa) at a relatively low temperature (60 degrees Celsius). The water in the pulp boils and expands, causing the pit to be removed. Under this process, very little of the medicinal substances in Cornus officinalis are damaged by heat, and the pulp and pit are completely separated, resulting in high-quality processed Cornus officinalis with high economic value.

[0032] Since the pulp of Cornus officinalis contains other substances besides water, the relationship between the pitting temperature and the vacuum level does not need to strictly follow the relationship between the boiling point of water and the vacuum level. As long as the pitting temperature allows the pulp of Cornus officinalis to expand under the corresponding vacuum level in actual production, it is sufficient. For example, in actual production, the pulp and pit of Cornus officinalis can expand and crack under a negative pressure environment of 60 degrees Celsius and -0.08 MPa. In addition, the relationship between the pitting temperature and the vacuum level can be adjusted within a small range. For example, Cornus officinalis can also expand and crack under a negative pressure environment of 60 degrees Celsius and -0.08 MPa with fluctuations of 0.005 MPa, although the degree of cracking will be different.

[0033] Example 2: A method for rapid decarburization of Cornus officinalis at low temperature The method for rapid depigmentation of Cornus officinalis at low temperature includes the following steps: (1) The cornelian cherry is heated at a low temperature until it reaches the temperature at which the kernel can be removed.

[0034] The specific steps include: collecting the freshly picked dogwood fruits, sorting out the fruits to remove damaged fruits and miscellaneous leaves, rinsing them with clean water, spreading them flat on a stainless steel tray, and placing the tray containing the dogwood fruits into a vacuum steamer; closing the cabinet door and pressing the start button, the PLC controller of the vacuum steamer will first start its steam generation module to work, heating the dogwood fruits by generating water steam. When the water steam temperature reaches 50℃, the timer starts and maintains a constant temperature of 50℃ for 25 minutes, so that each dogwood fruit is heated evenly.

[0035] (2) The cornelian cherry fruit at the temperature at which the kernel can be removed is expanded in a vacuum environment to separate the pulp from the kernel, and then the kernel can be removed manually or by machine.

[0036] The specific steps include: after the timing of maintaining a constant temperature of 50°C for 25 minutes in step (1) is completed, the valve of the vacuum storage tank connected to the vacuum steamer is opened, and the pressure is released under the action of the vacuum storage tank. The vacuum steamer is then drawn into negative pressure by the vacuum storage tank, causing the pressure inside the cabinet to drop rapidly to -0.09Mpa. The vacuum degree of -0.09Mpa corresponds to the boiling temperature of water of about 50 degrees Celsius, which causes the water in the flesh of Cornus officinalis to expand rapidly and separate from the seed under the expansion stress. Then, the seed can be removed manually or by machine.

[0037] Example 3: A method for rapid decarburization of Cornus officinalis at low temperature The method for rapid depigmentation of Cornus officinalis at low temperature includes the following steps: (1) The cornelian cherry is heated at a low temperature until it reaches the temperature at which the kernel can be removed.

[0038] The specific steps include: collecting the freshly picked dogwood fruits, sorting out the fruits to remove damaged fruits and miscellaneous leaves, rinsing them with clean water, laying them flat on a stainless steel tray, and placing the tray containing the dogwood fruits into a vacuum steamer; closing the cabinet door and pressing the start button, the PLC controller of the vacuum steamer will first start its steam generation module to work, heating the dogwood fruits by generating water steam. When the water steam temperature reaches 70℃, the timer starts and maintains a constant temperature of 70℃ for 20 minutes, so that each dogwood fruit is heated evenly.

[0039] (2) The cornelian cherry fruit at the temperature at which the kernel can be removed is expanded in a vacuum environment to separate the pulp from the kernel, and then the kernel can be removed manually or by machine.

[0040] The specific steps include: after the timing of maintaining a constant temperature of 70°C for 20 minutes in step (1) is completed, the valve of the vacuum storage tank connected to the vacuum steamer is opened, and the pressure is released under the action of the vacuum storage tank. The vacuum steamer is then drawn into negative pressure by the vacuum storage tank, causing the pressure inside the cabinet to drop rapidly to -0.07Mpa. The vacuum degree of -0.07Mpa corresponds to the boiling temperature of water of about 70 degrees Celsius, which causes the water in the flesh of Cornus officinalis to expand rapidly and separate from the seed under the expansion stress. Then, the seed can be removed manually or by machine.

[0041] Example 4: A method for rapid decarburization of Cornus officinalis at low temperature The method for rapid depigmentation of Cornus officinalis at low temperature includes the following steps: (1) The cornelian cherry is heated at a low temperature until it reaches the temperature at which the kernel can be removed.

[0042] The specific steps include: collecting the freshly picked dogwood fruits, sorting out the fruits to remove damaged fruits and miscellaneous leaves, rinsing them with clean water, laying them flat on a stainless steel tray, and placing the tray containing the dogwood fruits into a vacuum steamer; closing the cabinet door and pressing the start button, the PLC controller of the vacuum steamer will first start its steam generation module to work, heating the dogwood fruits by generating water steam. When the water steam temperature reaches 80℃, the timer starts and the temperature is maintained at 80℃ for 15 minutes to ensure that each dogwood fruit is heated evenly.

[0043] (2) The cornelian cherry fruit at the temperature at which the kernel can be removed is expanded in a vacuum environment to separate the pulp from the kernel, and then the kernel can be removed manually or by machine.

[0044] The specific steps include: after the timing of maintaining a constant temperature of 80°C for 15 minutes in step (1) is completed, the valve of the vacuum storage tank connected to the vacuum steamer is opened, and the pressure is released under the action of the vacuum storage tank. The vacuum steamer is then drawn into negative pressure by the vacuum storage tank, causing the pressure inside the cabinet to drop rapidly to -0.055Mpa. The vacuum degree of -0.055Mpa corresponds to the boiling temperature of water of about 80 degrees Celsius, which causes the water in the flesh of Cornus officinalis to expand rapidly and separate from the seed under the expansion stress. Then, the seed can be removed manually or by machine.

[0045] Testing and Experiment To test the effect of the low-temperature rapid dekernamination method on the quality of Cornus officinalis, the following experiment was conducted: This experiment was conducted using high performance liquid chromatography (HPLC) based on General Chapter 0512 of Part IV of the 2020 edition of the Chinese Pharmacopoeia to detect the active ingredients mononoside and loganin in Cornus officinalis products. Mononoside and loganin are two core active ingredients in Cornus officinalis.

[0046] Combination Figure 2As shown, in this test, the total content of morroniside and loganin was determined on the ground powder samples obtained after drying the cornel products obtained by denucleation under the conditions of heating temperatures of 60, 70, 80, 90, 100°C and a vacuum degree of -0.085Mpa, Figure 2 In, the unit of the measured total content of morroniside and loganin is mg.

[0047] The determination method of the total content of morroniside and loganin in each sample (test sample) is as follows: 1. Chromatographic conditions Chromatographic column: C18 (octadecylsilane bonded silica gel).

[0048] Mobile phase: phase A is acetonitrile, phase B is 0.3% phosphoric acid aqueous solution, and gradient elution is used.

[0049] 0–15min: proportion of phase A 10%→15%; 15–25min: proportion of phase A 15%→20%; Detection wavelength: 240nm; column temperature: 35°C; the number of theoretical plates of loganin peak ≥ 10000.

[0050] 2. Reference substance solution Take morroniside and loganin reference substances, use 80% methanol to prepare a mixed solution containing about 50μg of each per milliliter.

[0051] 3. Test sample solution Take about 0.2g of test sample powder (passed through No. 3 sieve), accurately weigh it, add 25mL of 80% methanol, weigh, heat and reflux for 1h, cool to room temperature, replenish the weight loss, filter, and take the subsequent filtrate to obtain.

[0052] 4. Limit Calculated on dry basis, the total content of morroniside and loganin ≥1.2% is regarded as qualified. Figure 2 Herein, in test groups 2 to 5, the total content of morroniside and loganin is qualified, and the lower the denucleation temperature, the higher the total content of morroniside and loganin; in test group 1, the total content of morroniside and loganin does not meet the standard.

[0053] The experimental results show that reducing the temperature of the denucleation process can greatly increase the total content of morroniside and loganin, reduce the destruction and loss caused during the heating process, and has considerable economic value.

[0054] Example 5: A low-temperature rapid denucleation device for cornus officinalis In combination with Figure 3As shown, the equipment for rapid low-temperature depitting of Cornus officinalis includes a vacuum steamer 1 and a vacuum storage tank 2. The vacuum steamer 1 is used to heat the Cornus officinalis at a low temperature to a temperature suitable for depitting. The vacuum storage tank 2 is connected to a vacuum pump 21 and a pressure sensor 22. The vacuum pump 21 creates negative pressure in the vacuum storage tank 2, and the pressure sensor 22 detects the vacuum level in the vacuum storage tank 2. The vacuum steamer also has multiple trays for placing the Cornus officinalis.

[0055] Vacuum storage tank 2 is used to create a vacuum environment for vacuum steamer 1, so as to expand and de-pitate the dogwood at the de-pitting temperature in a vacuum environment. Vacuum steamer 1 is connected to vacuum storage tank 2 through pipe 3, which is equipped with valve 31. Vacuum storage tank 2 must be large enough, and pipe 3 must be thick enough to meet the requirement of rapid depressurization of vacuum steamer 1.

[0056] The equipment for rapid low-temperature depitting of Cornus officinalis also includes a PLC controller; the PLC controller can be integrated into the vacuum steamer 1; the temperature sensor and steam generation module in the vacuum steamer 1 are electrically connected to the PLC controller, and the steam generation module is used to generate water vapor. Valve 31 is a solenoid valve electrically connected to the PLC controller; vacuum pump 21 and pressure sensor 22 are electrically connected to the PLC controller. The equipment for rapid low-temperature depitting of Cornus officinalis also includes a container, in which the vacuum steamer 1 and vacuum storage tank 2 are housed for easy transport.

[0057] Vacuum storage tank 2 is pre-evacuated to a set negative pressure by vacuum pump 21. After the Cornus officinalis is heated to a low temperature by vacuum steamer 1, the PLC controller automatically opens valve 31 connecting vacuum steamer 1 and vacuum storage tank 2, instantly creating negative pressure in vacuum steamer 1. This is faster than directly using a vacuum pump to create a vacuum in the vacuum steamer, allowing the Cornus officinalis pulp to reach boiling expansion more quickly, resulting in better pitting. The entire system can be automated via PLC controller, making it simple to operate and highly efficient. The PLC controller precisely controls the heating temperature and duration in vacuum steamer 1, as well as the vacuum level in vacuum storage tank 2 and vacuum steamer 1 (when valve 31 is opened, the vacuum levels in vacuum storage tank 2 and vacuum steamer 1 remain synchronized), ensuring a corresponding relationship between temperature and vacuum level. This guarantees that the Cornus officinalis completes expansion and pitting under the set low-temperature negative pressure conditions, maximizing the retention of active ingredients and improving the quality and economic value of the processed product.

[0058] Based on the above embodiments, it can be seen that the low-temperature rapid de-pitting equipment for Cornus officinalis combines industrial automation control technology and installs the equipment system in a mobile container. It can be moved and operated according to the temperature difference between the north and south of China and the different ripening periods of Cornus officinalis, so as to improve the processing quality of Cornus officinalis and reduce the energy consumption and emissions of decentralized processing.

[0059] It should be noted that, unless otherwise defined, all terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains, and terms such as those defined in a common dictionary should be interpreted as having a meaning consistent with their meaning in the context of the relevant art. It should also be understood that the above is a description of the disclosure and should not be considered as a limitation thereof. Although several exemplary embodiments of the disclosure have been described, those skilled in the art will readily understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the invention. Therefore, all such modifications are intended to be included within the scope of the disclosure as defined in the claims, and will not be detailed here.

Claims

1. A method for rapid depitting of Cornus officinalis seeds at low temperature, characterized in that, include: (1) The cornelian cherry is heated at a low temperature until it reaches the temperature at which the kernel can be removed; (2) The cornelian cherry fruit at the de-pitting temperature is expanded in a vacuum environment, the vacuum degree of which corresponds to the de-pitting temperature, so that the pulp and seed of the cornelian cherry fruit can be separated, and then the seed is removed manually or by machine.

2. The method for rapid depitting of Cornus officinalis at low temperature according to claim 1, characterized in that: The nucleation temperature is 50℃~80℃; the vacuum level of the vacuum environment is -0.09Mpa~-0.055Mpa.

3. The method for rapid depitting of Cornus officinalis at low temperature according to claim 2, characterized in that: The nucleation temperature is 60°C; the vacuum level of the vacuum environment is -0.08 MPa.

4. The method for rapid depitting of Cornus officinalis at low temperature according to claim 1, characterized in that: The specific steps (1) include: collecting the freshly picked Cornus officinalis fruits, sorting out the bad fruits and miscellaneous leaves, and washing them clean; spreading the cleaned Cornus officinalis fruits flat on a stainless steel tray, placing the stainless steel tray containing the Cornus officinalis fruits into a vacuum steamer for low-temperature heating, starting the timer when the temperature inside the vacuum steamer reaches the pitting temperature, maintaining a constant temperature for 15 to 25 minutes, so that each Cornus officinalis fruit pulp is heated evenly; Step (2) specifically includes: after the timing is completed, the valve of the vacuum storage tank connected to the vacuum steamer is opened, and the pressure is released under the action of the vacuum storage tank, so that the pressure in the vacuum steamer drops rapidly, and the water in the flesh of Cornus officinalis expands rapidly, and under the expansion stress, it separates from the daughter kernel to achieve dekernating.

5. The method for rapid depitting of Cornus officinalis at low temperature according to claim 4, characterized in that: The constant temperature period is 20 minutes; the nucleation temperature is 60°C; and the vacuum storage tank causes the pressure inside the vacuum steamer to drop rapidly to -0.08 MPa.

6. A device for rapid low-temperature depitting of Cornus officinalis seeds, characterized in that, include: A vacuum steamer is used to heat Cornus officinalis at low temperatures, bringing it to a temperature at which the kernels can be removed. A vacuum storage tank is connected to a vacuum pump and a pressure sensor; a vacuum steamer is connected to the vacuum storage tank via a pipe, and a valve is provided on the pipe; the vacuum storage tank is used to create a vacuum environment for the vacuum steamer, so as to expand and remove the kernels of the dogwood at the kernel removal temperature in the vacuum environment.

7. The equipment for rapid low-temperature depitting of Cornus officinalis according to claim 6, characterized in that, It also includes a PLC controller; the temperature sensor and steam generation module in the vacuum steamer are electrically connected to the PLC controller; the valve is a solenoid valve electrically connected to the PLC controller; the vacuum pump and pressure sensor are electrically connected to the PLC controller.

8. The equipment for rapid low-temperature depitting of Cornus officinalis according to claim 7, characterized in that, It also includes a container, in which the vacuum steamer and vacuum storage tank are housed.

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