Fermentation tank for Chinese gall leaven and technological method for preparing Chinese gall leaven

Abstract

The invention relates to the technical field of pharmaceutical equipment and methods, and particularly discloses a fermentation tank for Chinese gall leaven, the fermentation tank comprises a tank body, one side of the tank body is provided with a tank cover; a sealing cover is arranged at the upper part of the tank body; an environment control system for monitoring and adjusting temperature, humidity and pH value is also arranged on the tank cover; a heat-insulating layer is arranged on the surface of the tank body. The specific process for preparing Chinese gall leaven based on the fermentation tank comprises the following steps: S1, preparing the fermentation tank; s2, treating the raw materials and adding the raw materials into a fermentation tank; s3, fermenting the raw materials by using a fermentation tank; and S4, taking out a fermentation product, and drying. The invention not only provides the fermentation tank for fermenting the Chinese gall leaven raw material, but also provides the corresponding preparation process, so that the Chinese gall leaven can be industrially produced in a large scale, and compared with the traditional manual Chinese gall leaven processing, the Chinese gall leaven production cost is greatly reduced, and the Chinese gall leaven preparation capacity is improved.

Description

Technical Field

[0001] The invention relates to the technical field of traditional Chinese medicine preparation and method, and in particular to a fermentation tank for Baiyaojian and a process for preparing Baiyaojian. Background Art

[0002] Baiyaojian, also known as Zhibaiyaojian and Baicaojian, is a dried block made by fermenting gallnut with tea, distiller's grains or distiller's yeast. Its main ingredient is gallic acid produced by the hydrolysis of hydrolyzable tannins in gallnut. It has the effects of clearing away heat and resolving phlegm, promoting body fluid and quenching thirst. It can be clinically used to treat lung heat cough, wind-fire toothache, oral and tongue erosion, chronic dysentery and prolapse of the anus.

[0003] The fermentation of Baiyaojian needs to be carried out under the catalysis of microorganisms. At present, Baiyaojian is generally made by hand, which is easily affected by factors such as season, environment, and human factors. The purity of the processed strains is not high, the method is crude, and the quality of the processed products is difficult to guarantee. In addition, since the preparation process of Baiyaojian is all artificial small-scale preparation, its early fermentation process and later drying process are relatively easy to operate, but if large-scale preparation of Baiyaojian is to be carried out, corresponding fermentation equipment and fermentation process corresponding to the fermentation equipment are required to obtain Baiyaojian of qualified quality. At present, there is no fermentation equipment and large-scale fermentation process for Baiyaojian production. Summary of the invention

[0004] The purpose of the present invention is to provide a fermentation tank specially used for industrial production of Baiyaojian.

[0005] Another object of the present invention is to provide a process for industrial production of Baiyaojian using a fermentation tank for Baiyaojian.

[0006] The present invention is achieved through the following technical scheme: a fermentation tank for Baiyaojian, including a tank body, a tank cover that can be sealed and connected to the tank body is arranged on one side of the tank body; an openable sealing cover is arranged on the upper part of the tank body, and the tank body is also provided with a stirring device that can mix the materials in the tank body evenly; an environmental control system is also arranged on the tank cover, and the environmental control system can monitor and adjust the temperature, humidity and pH value of the internal environment after the tank body and the tank cover are sealed; and an insulation layer is also arranged on the surface of the tank body.

[0007] Traditional fermentation tanks are generally for liquid fermentation, and the fermentation liquid is collected, while the fermentation process of Yaojian is solid fermentation, and the final fermentation product is also solid. Therefore, using traditional fermentation tanks for fermentation, it is impossible to take out the fermentation product in the fermentation tank. In view of this, the present technical solution provides a fermentation tank specifically used for Baiyaojian for fermentation, which places the entire fermentation tank horizontally, and connects the tank cover and the tank body of the fermentation tank horizontally, which can not only increase the amount of material contained in the tank body, but also open the tank cover from one side after the fermentation is completed, so as to facilitate the removal of the fermentation product. In addition, the sealing cover that can be opened on one side of the tank body can conveniently add fermentation raw materials, and the environmental control system provided on the tank cover can also cooperate with opening the sealing cover to keep the optimal fermentation conditions for the tank body to ensure the quality of the final fermentation product.

[0008] In order to better implement the present invention, further, flanges are provided at the sealing positions of the tank body and the tank cover, a sealing rubber ring is provided between the tank body flange and the tank cover flange, and the tank body and the tank cover are sealed and connected by a lock buckle that tightens the flange.

[0009] In order to better implement the present invention, further, the sealing cover comprises a cover body, a closed observation window is arranged in the middle of the cover body, and a handle is arranged on one side of the cover body.

[0010] In order to better implement the present invention, further, the stirring device includes a motor installed on the upper part of the tank body, a driving rod extending to the tank body is arranged at the lower part of the motor, and a fence-type stirring paddle is arranged at one end of the driving rod placed on the tank body.

[0011] In order to better implement the present invention, further, the environmental control system includes a humidity sensor, a temperature sensor, and a pH value detector placed in the tank body. The humidity sensor detects the humidity in the tank and is connected to the humidity controller through a control circuit. When the humidity is abnormal, the humidity sensor transmits a signal to the control circuit to control the humidity controller to adjust the humidity in the tank so that the humidity in the tank remains stable. The temperature sensor detects the temperature inside the tank and is connected to the temperature controller through the control circuit. When the temperature is abnormal, the temperature sensor transmits a signal to the control circuit, and controls the temperature controller to adjust the temperature inside the tank to keep the temperature inside the tank stable. The pH value detector detects the pH value of the material in the tank, and feeds back the detected pH value to the outside of the tank for display. By opening the sealing cover and adding a pH regulator into the tank, the pH value in the tank is kept stable.

[0012] In order to better implement the present invention, further, a support frame is provided at the lower part of the tank body for supporting the entire tank body and the tank cover.

[0013] A process for preparing Baiyaojian based on the fermentation tank for Baiyaojian comprises the following steps: Step S1: sealingly connecting the tank body and tank cover of the fermentation tank for Baiyaojian, and opening the sealing cover; Step S2: pre-treating the Chinese gallnut and adding the Chinese gallnut into the fermentation tank for Baiyaojian through the opened sealing cover; Step S3: taking tea leaves for decoction, collecting the cooled and concentrated decoction liquid and tea residues, and adding them into the fermentation tank for Baiyaojian through the opened sealing cover; Step S4: adding distiller's yeast into the fermentation tank for Baiyaojian through the opened sealing cover; Step S5: closing the sealing cover, using the stirring device of the fermentation tank for Baiyaojian to stir the added materials evenly at a speed of 15rid / min to make them into a mass, and then using the fence-type stirring paddle in the stirring device at a speed of 60rid / min to cut the massed materials into blocks; Step S6: After the stirring is completed, the humidity and temperature in the fermentation tank for Baiyaojian are adjusted by using the environmental control system of the fermentation tank for Baiyaojian, and the pH value in the fermentation tank for Baiyaojian is detected, so that the temperature of the fermentation tank for Baiyaojian is maintained at 30°C-35°C, and the humidity is maintained at 50%-70%, and the pH value in the fermentation tank for Baiyaojian is adjusted to 3.2-4.0 by adding a pH regulator by briefly opening the sealing cover for fermentation; Step S7: After fermenting for 48 hours to 72 hours using the fermentation tank for Baiyaojian, the fermentation status in the fermentation tank for Baiyaojian is observed through the observation window on the sealing cover. When a large amount of white crystals appear, the fermentation is completed; Step S8: Open the can lid, take out the fermented material in the can, spread the fermented material in a mold, and dry it in a drying oven at 45°C to 60°C to obtain the finished product of Baiyaojian.

[0014] This technical solution is based on the fermentation tank provided above to prepare Baiyaojian. Since Baiyaojian is industrially prepared in large quantities using a closed fermentation tank, its specific preparation process parameters need to be strictly controlled and adjusted accordingly compared to traditional manual processing. In addition, in order to obtain the best quality Baiyaojian, the selection of raw materials needs to be further adjusted. In particular, large-scale industrial production of Baiyaojian cannot perform fine operations on raw materials like manual processing. Therefore, in terms of raw material processing, it is necessary to simplify the processing process and the process flow so that it can meet industrial large-scale production.

[0015] In order to better implement the method of the present invention, further, in step S2, the process of pre-treating the gallnut is: breaking the gallnut, removing aphids and then cleaning and drying, then ultra-fine grinding, passing through a 300-mesh sieve, and sterilizing at high temperature of 100°C for 30 minutes.

[0016] In order to better implement the method of the present invention, further, in the step S3, green tea is selected and added with water to be decocted into juice, decocted twice, each time for 0.5 h, the tea leaves are not filtered, and the two decoctions are directly combined, vacuum concentrated at 55°C, cooled to room temperature, and then borneol, borax, alum, and catechu are added and mixed evenly, and then added into the fermentation tank for Baiyaojian through the opened sealing cover.

[0017] In order to better implement the method of the present invention, further, in the step S5, during the process of uniformly stirring the added materials using the stirring device of the fermentation tank used for Baiyaojian, if the material has too little water and cannot form a mass, it is necessary to briefly open the sealing cover and add purified water to increase the water content of the material so that it can form a mass under low-speed stirring.

[0018] Compared with the prior art, the present invention has the following advantages and beneficial effects: (1) The present invention provides a fermentation tank for Baiyaojian, which can ferment the raw materials of Baiyaojian according to the special situation of solid-state fermentation of the raw materials of Baiyaojian, and the structural design of the fermentation tank can provide optimal fermentation conditions for fermentation on the one hand, and can more easily carry out subsequent preparation operations of Baiyaojian on the other hand; (2) Based on the fermentation tank for Baiyaojian, the present invention provides a preparation method for Baiyaojian capable of large-scale industrial production, which adjusts the preparation process parameters and raw materials of Baiyaojian and adds additional auxiliary ingredients, thereby enabling industrial large-scale preparation of high-quality Baiyaojian; (3) The present invention not only provides a fermentation tank for fermenting the raw materials of Baiyaojian, but also provides a corresponding preparation process, so that Baiyaojian can be industrially mass-produced. Compared with the traditional manual preparation of Baiyaojian, the production cost of Baiyaojian is greatly reduced and the preparation capacity of Baiyaojian is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments with reference to the following drawings: Figure 1 It is a structural schematic diagram of the present invention.

[0020] Wherein: 1 - tank body, 2 - tank cover, 3 - sealing cover, 31 - cover body, 32 - observation window, 33 - handle, 4 - stirring device, 41 - motor, 42 - driving rod, 43 - fence type stirring paddle, 5 - environmental control system, 6 - insulation layer, 7 - lock, 8 - support frame. DETAILED DESCRIPTION

[0021] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] Embodiment 1: This embodiment provides a structure of a fermentation tank for Baiyaojian, such as Figure 1 As shown, it includes a tank body 1, and a tank cover 2 that can be sealed and connected to the tank body 1 is arranged on one side of the tank body 1; an openable sealing cover 3 is arranged on the upper part of the tank body 1, and the tank body 1 is also provided with a stirring device 4 that can evenly mix the materials in the tank body 1; an environmental control system 5 is also arranged on the tank cover 2, and the environmental control system can monitor and adjust the temperature, humidity and pH value of the internal environment after the tank body 1 and the tank cover 2 are sealed; and a thermal insulation layer 6 is also arranged on the surface of the tank body 1.

[0025] The stirring device 4 comprises a motor 41 installed on the upper part of the tank body 1 , a driving rod 42 extending to the tank body 1 is arranged at the lower part of the motor 41 , and a fence-type stirring paddle 43 is arranged at one end of the driving rod 42 placed on the tank body 1 .

[0026] The environmental control system includes a humidity sensor, a temperature sensor, and a pH value detector placed in the tank body 1. The humidity sensor detects the humidity in the tank body 1 and is connected to the humidity controller through the control circuit. When the humidity is abnormal, the humidity sensor transmits a signal to the control circuit to control the humidity controller to adjust the humidity in the tank body 1 so that the humidity in the tank body 1 remains stable. The temperature sensor detects the temperature inside the tank body 1 and is connected to the temperature controller through the control circuit. When the temperature is abnormal, the temperature sensor transmits a signal to the control circuit to control the temperature controller to adjust the temperature inside the tank body 1 so that the temperature inside the tank body 1 remains stable. The pH value detector detects the pH value of the material in the tank body 1 and feeds back the detected pH value to the outside of the tank body 1 for display. By opening the sealing cover 3 and adding a pH regulator into the tank body 1, the pH value in the tank body 1 is kept stable.

[0027] The pH adjuster is a common pH adjuster, such as sodium bicarbonate or citric acid, and any pH adjuster that does not affect the normal fermentation can be selected.

[0028] Based on the above fermentation tank, the preparation process of Baiyaojian includes the following steps: Step S1: sealingly connecting the tank body 1 and the tank cover 2 of the fermentation tank for Baiyaojian, and opening the sealing cover 3; Step S2: pre-treating the Chinese gallnut and adding it into the fermentation tank for Baiyaojian through the opened sealing cover 3; Step S3: taking tea leaves for decoction, collecting the cooled and concentrated decoction liquid and tea residues, and adding them into the fermentation tank for Baiyaojian through the opened sealing cover 3; Step S4: adding distiller's yeast into the fermentation tank for Baiyaojian through the opened sealing cover 3; Step S5: closing the sealing cover 3, using the stirring device 4 of the fermentation tank for Baiyaojian to stir the added materials evenly at a speed of 15rid / min to make them into a mass, and then using the fence-type stirring paddle 43 in the stirring device 4 to cut the massed materials into blocks at a speed of 60rid / min; using the differential stirring of the stirring device 4 and optimizing the structural design of the stirring paddle to respectively achieve raw material mixing and block cutting of the mixed raw materials, so that the raw materials can be fermented better; Step S6: After the stirring is completed, the humidity and temperature in the fermentation tank for Baiyaojian are adjusted by using the environmental control system 5 of the fermentation tank for Baiyaojian, and the pH value in the fermentation tank for Baiyaojian is detected, so that the temperature of the fermentation tank for Baiyaojian is maintained at 30°C-35°C, and the humidity is maintained at 50%-70%, and the sealing cover 3 is briefly opened, and the pH value in the fermentation tank for Baiyaojian is adjusted to 3.2-4.0 by adding a pH regulator for fermentation; Step S7: After fermenting for 48 to 72 hours using the fermentation tank for Baiyaojian, observe the fermentation status in the fermentation tank for Baiyaojian through the observation window 32 on the sealing cover 3. When a large amount of white crystals appear, the fermentation is completed; Step S8: Open the tank cover 2, take out the fermented material in the tank body 1, spread the fermented material in a mold, and dry it in a drying oven at 45°C to 60°C to obtain the finished Baiyaojian product.

[0029] The quality of the final Baiyaojian product was evaluated by measuring the content of gallic acid in the finished product. The content of gallic acid in the finished Baiyaojian product was finally measured by chromatographic analysis to be 43.97%, reaching the quality standard of excellent products.

[0030] Aflatoxin testing was carried out using chromatographic analysis, and no aflatoxin B1, aflatoxin B2, aflatoxin G1, and aflatoxin G2 were detected.

[0031] Embodiment 2: Based on the above embodiment, this embodiment further defines the connection relationship between the tank body 1 and the tank cover 2, such as Figure 1 As shown, the sealing parts of the tank body 1 and the tank cover 2 are both provided with flanges, a sealing rubber ring is provided between the flanges of the tank body 1 and the flanges of the tank cover 2, and the tank body 1 and the tank cover 2 are sealed and connected by a lock buckle 7 that tightens the flanges. The flanges are provided at the sealing parts of the tank body 1 and the tank cover 2 so that the two can be better docked, the sealing rubber ring is provided so that a better seal can be achieved between the tank body 1 and the tank cover 2, and the lock buckle 7 can quickly seal and disassemble the tank body 1 and the tank cover 2, so as to facilitate the removal of the fermented product. The other parts of this embodiment are the same as those of the above embodiment and will not be repeated.

[0032] Embodiment 3: Based on the above embodiment, this embodiment further defines the structure of the sealing cover 3, such as Figure 1As shown, the sealing cover 3 includes a cover body 31, a closed observation window 32 is provided in the middle of the cover body 31, and a handle 33 is also provided on one side of the cover body 31. A sealing rubber ring is also provided on the cover body 31 of the sealing cover 3, which is used to seal the upper opening of the tank body 1 so that the tank body 1 remains sealed. In addition, an observation window 32 is provided on the cover body 31, and the internal fermentation situation can be observed by irradiation of an external light source such as a flashlight. Generally, when the fermentation is completed, white frost will be generated on the surface of the raw material, which can be easily observed through the observation window 32. The setting of the handle 33 is also for the convenience of opening or closing the sealing cover 3. The other parts of this embodiment are the same as the above embodiment and will not be repeated.

[0033] Embodiment 4: Based on the above embodiment, this embodiment further adds a support frame 8 structure, such as Figure 1 As shown, the lower part of the tank body 1 is also provided with a support frame 8 for supporting the entire tank body 1 and the tank cover 2. The support frame 8 is provided to enable the entire tank body 1 and the tank cover 2 to be placed in the air, so as to prevent the fermented product from falling to the ground during the process of taking out the fermented product. The other parts of this embodiment are the same as those of the above embodiment and will not be repeated.

[0034] Embodiment 5: Based on the above embodiment, this embodiment further defines the specific process of pre-treating the raw materials in the process of preparing Baiyaojian. In step S2, the process of pre-treating the gallnut is as follows: breaking the gallnut, removing aphids, cleaning and drying, and then ultra-fine grinding, passing through a 300-mesh sieve, and sterilizing at high temperature of 100° C. for 30 minutes. Due to large-scale production, the particle size of the gallnut is different from that of traditional manual processing, and a smaller particle size is required to improve its fermentation effect in the fermenter.

[0035] The inventors used gallic acid content obtained by the final test as an evaluation index for gallnut raw materials of different particle sizes, and prepared Baiyaojian under the same other adjustment conditions for 80 mesh, 120 mesh, 150 mesh, 200 mesh, 250 mesh, and 300 mesh, respectively. The gallic acid content of the final product was measured as follows: Table 1 Gallic acid content in Baiyaojian prepared from Galla chinensis with different particle sizes According to the contents of Table 1, the smaller the particle size of the chinensis, the more conducive it is to the preparation process of Baiyaojian. However, too small a particle size will affect the fermentation and mixing process, and the smaller the particle size, the higher the crushing cost. Taking all factors into consideration, the inventors chose a chinensis particle size of 300 mesh as the fermentation raw material for Baiyaojian.

[0036] In the step S3, green tea is selected and added with water to be boiled into juice, and the juice is boiled twice, each time for 0.5 h. The tea leaves are not filtered, and the two decoctions are directly combined. After vacuum concentration at 55° C., the mixture is cooled to room temperature, and borneol, borax, alum and catechu are added and mixed evenly, and then the mixture is added to the fermentation tank for Baiyaojian through the opened sealing cover 3.

[0037] Since it is an industrial production, the present invention omits the process of filtering out tea residues, and directly mixes the decoction leaves with tea leaves and adds them as raw materials. In order to avoid the adverse effect of tea leaves on the fermentation of Baiyaojian, borneol, borax, alum and catechu are specially added. The gallic acid content of the finally prepared Baiyaojian is increased compared with that of the Baiyaojian without adding borneol, borax, alum and catechu.

[0038] Embodiment 6: Based on the above embodiment, this embodiment is further defined as follows: in step S5, when the stirring device 4 of the fermentation tank for Baiyaojian is used to stir the added materials evenly, if the materials have too little water and cannot form a mass, it is necessary to temporarily open the sealing cover 3 and add purified water to increase the water content of the materials so that the materials can form a mass under low-speed stirring. The other parts of this embodiment are the same as the above embodiment and will not be repeated.

[0039] It can be understood that the fermentation tank structure for Baiyaojian according to an embodiment of the present invention, such as the working principles and working processes of components such as the motor 41 and the insulation layer 6 are all prior art and are well known to technicians in the field, and will not be described in detail here.

[0040] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A fermentation tank for Baiyaojian, characterized in that: The invention comprises a tank body (1), wherein one side of the tank body (1) is provided with a tank cover (2) capable of being sealed and connected to the tank body (1); the upper part of the tank body (1) is provided with an openable sealing cover (3); the tank body (1) is also provided with a stirring device (4) capable of evenly mixing the materials in the tank body (1); the tank cover (2) is also provided with an environmental control system (5), and the environmental control system is capable of monitoring and adjusting the temperature, humidity and pH value of the internal environment after the tank body (1) and the tank cover (2) are sealed; and the surface of the tank body (1) is also provided with a heat-insulating layer (6).

2. The fermentation tank for Baiyaojian according to claim 1, characterized in that: The sealing parts of the tank body (1) and the tank cover (2) are both provided with flanges, a sealing rubber ring is provided between the flange of the tank body (1) and the flange of the tank cover (2), and the tank body (1) and the tank cover (2) are sealed and connected by means of a lock buckle (7) that tightens the flanges.

3. A fermentation tank for Baiyaojian according to claim 1 or 2, characterized in that: The sealing cover (3) comprises a cover body (31), a closed observation window (32) is provided in the middle of the cover body (31), and a handle (33) is also provided on one side of the cover body (31).

4. A fermentation tank for Baiyaojian according to claim 1 or 2, characterized in that: The stirring device (4) comprises a motor (41) mounted on the upper part of the tank body (1); a driving rod (42) extending to the tank body (1) is arranged at the lower part of the motor (41); and a fence-type stirring paddle (43) is arranged at one end of the driving rod (42) placed on the tank body (1).

5. A fermentation tank for Baiyaojian according to claim 1 or 2, characterized in that: The environmental control system comprises a humidity sensor, a temperature sensor, and a pH value detector placed in the tank (1). The humidity sensor detects the humidity in the tank body (1) and is connected to the humidity controller via a control circuit. When the humidity is abnormal, the humidity sensor transmits a signal to the control circuit, which controls the humidity controller to adjust the humidity in the tank body (1) so that the humidity in the tank body (1) remains stable. The temperature sensor detects the temperature inside the tank body (1) and is connected to the temperature controller via a control circuit. When the temperature is abnormal, the temperature sensor transmits a signal to the control circuit, which controls the temperature controller to adjust the temperature inside the tank body (1) so that the temperature inside the tank body (1) remains stable. The pH value detector detects the pH value of the material in the tank body (1), and feeds back the detected pH value to the outside of the tank body (1) for display. By opening the sealing cover (3), a pH regulator is added into the tank body (1), so that the pH value in the tank body (1) remains stable.

6. A fermentation tank for Baiyaojian according to claim 1 or 2, characterized in that: The lower part of the tank body (1) is also provided with a support frame (8) for supporting the entire tank body (1) and the tank cover (2).

7. A process for preparing Baiyaojian based on the fermentation tank for Baiyaojian according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step S1: sealingly connecting the tank body (1) and the tank cover (2) of the fermentation tank for Baiyaojian, and opening the sealing cover (3); Step S2: pre-treating the Chinese gallnut and adding it into the fermentation tank for Baiyaojian through the opened sealing cover (3); Step S3: taking tea leaves for decoction, collecting the cooled and concentrated decoction liquid and tea residues, and adding them into the fermentation tank for Baiyaojian through the opened sealing cover (3); Step S4: adding the koji into the fermentation tank for Baiyaojian through the opened sealing cover (3); Step S5: closing the sealing cover (3), using the stirring device (4) of the fermentation tank for Baiyaojian to stir the added materials evenly at a speed of 15rid / min to form a mass, and then using the fence-type stirring paddle (43) in the stirring device (4) to cut the massed materials into blocks at a speed of 60rid / min; Step S6: After the stirring is completed, the humidity and temperature in the fermentation tank for Baiyaojian are adjusted by using the environmental control system (5) of the fermentation tank for Baiyaojian, and the pH value in the fermentation tank for Baiyaojian is detected, so that the temperature of the fermentation tank for Baiyaojian is maintained at 30°C to 35°C, and the humidity is maintained at 50% to 70%, and the pH value in the fermentation tank for Baiyaojian is adjusted to 3.2 to 4.0 by adding a pH regulator by briefly opening the sealing cover (3) for fermentation; Step S7: After fermenting for 48 hours to 72 hours using the fermentation tank for Baiyaojian, the fermentation status in the fermentation tank for Baiyaojian is observed through the observation window (32) on the sealing cover (3). When a large amount of white crystals appear, the fermentation is completed; Step S8: Open the can lid (2), take out the fermented material in the can body (1), spread the fermented material in a mold, and dry it in a drying oven at 45°C to 60°C, thereby obtaining the finished Baiyaojian product.

8. The process for preparing Baiyaojian according to claim 7, characterized in that: In step S2, the process of pre-treating the gallnut is: breaking the gallnut, removing aphids, cleaning and drying, then ultra-fine grinding, passing through a 300-mesh sieve, and sterilizing at high temperature of 100° C. for 30 minutes.

9. The process for preparing Baiyaojian according to claim 7 or 8, characterized in that: In step S3, green tea is selected and added with water to be boiled into juice, and the juice is boiled twice, each time for 0.5 h. The tea leaves are not filtered, and the two decoctions are directly combined. After vacuum concentration at 55° C., the mixture is cooled to room temperature, and borneol, borax, alum and catechu are added and mixed evenly. The mixture is then added to the fermentation tank for Baiyaojian through the opened sealing cover (3).

10. The process for preparing Baiyaojian according to claim 7 or 8, characterized in that: In step S5, during the process of uniformly stirring the added materials using the stirring device (4), if the materials have too little water content and cannot form a mass, it is necessary to briefly open the sealing cover (3) and add purified water to increase the water content of the materials so that the materials can form a mass under low-speed stirring.

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