Rice GABA enrichment device based on fed-batch water heat-moisture treatment

Abstract

The utility model provides a rice GABA enrichment device based on fed-batch water heat-moisture treatment. The rice GABA enrichment device comprises a horizontal germination tank, a fed-batch water heat-moisture treatment device, an in-tank humidity sensor, an in-tank temperature sensor and a control unit, gABA enrichment is carried out on the rice through the fed-batch water heat-moisture treatment device, in the enrichment process, the sprouting tank body continuously rotates and drives the rice inside to move, the rice uniformly receives temperature, humidity and oxygen, the enriched rice is dried through a low-temperature drying technology, the GABA enrichment device integrates wheat wetting, enrichment and drying functions, and the GABA enrichment device has the advantages that the wheat wetting, enrichment and drying functions are integrated; the content of GABA in brown rice enriched by the device is greatly increased, meanwhile, the content of GABA in endosperm is also greatly increased, the fissure rate of the enriched rice is low, the processing quality of the rice is greatly improved, and the eating quality of cooked rice prepared from the rice is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rice functional component enrichment devices, in particular to a rice GABA enrichment device based on fluidized water addition and wet heat treatment. Background Art

[0002] γ-Aminobutyric acid (GABA) is a non-protein amino acid widely found in plants and animals. It functions as an inhibitory neurotransmitter in the mammalian central nervous system. GABA participates in cerebral circulatory activity and has numerous physiological functions, including calming nerves, regulating hormone secretion, activating the liver and kidneys, treating asthma, and preventing cardiovascular disease. In 2009, it was approved as a new resource food by the Ministry of Health. Despite its important physiological functions, GABA production in the human body decreases with aging and increased stress. Therefore, supplementing GABA through food is of great significance for human health. The main methods for producing GABA include chemical synthesis, microbial fermentation, and plant enrichment. Chemical synthesis involves direct reactions of chemical substances to synthesize GABA, microbial fermentation utilizes microorganisms that contain glutamate decarboxylase to produce GABA, and plant metabolism utilizes the stress response of plants under adverse conditions to produce GABA. However, due to safety concerns associated with both chemical synthesis and microbial fermentation, and the difficulty of using the resulting products in food, plant-derived GABA has garnered significant attention from food researchers both domestically and internationally.

[0003] Rice, one of the most important cereals, is a staple in the diets of billions of people worldwide. my country is a major rice consumer, ranking first in rice production worldwide. However, the GABA content in brown rice is low, failing to meet human physiological needs. To increase GABA content in brown rice, most Chinese companies still rely on the most traditional plant-based enrichment method—the soaking and germination method, which is simple, environmentally friendly, and safe. However, the soaking and germination method requires at least 24 hours to enrich GABA. This prolonged soaking can lead to the loss of soluble nutrients and the proliferation of microorganisms, resulting in a high rate of cracking, reduced nutritional quality, and poor hygienic properties of the brown rice. Patent CN205597054U discloses an apparatus and method for enriching gamma-aminobutyric acid in plant fruits. While this patent requires less water than the soaking and germination method, which can reduce the cracking rate and improve taste to a certain extent, the apparatus is more complex and may prevent the rice from mixing evenly with the water, thus affecting the GABA enrichment effect. Summary of the Invention

[0004] In response to the above technical problems, the utility model provides a rice GABA enrichment device based on flow-added water and heat treatment. The rice is enriched with GABA by the flow-added water and heat treatment device. During the enrichment process, the germination tank body continuously rotates and drives the rice inside to move, so that the rice is evenly exposed to temperature, humidity and oxygen. The enriched rice is dried by low-temperature drying technology. The GABA enrichment device integrates the functions of moistening, enriching and drying, thereby improving the GABA content of the rice and its edible quality.

[0005] The GABA content in the brown rice enriched by the device is greatly increased, and the GABA content in the endosperm is also greatly improved. The enriched rice has a lower cracking rate, which greatly improves its processing quality and the edible quality of the cooked rice prepared from the rice.

[0006] The utility model achieves the above technical objectives through the following technical means.

[0007] A rice GABA enrichment device based on a flow-added water-heat treatment method comprises a horizontal germination tank, a flow-added water-heat treatment device, a humidity sensor in the tank, a temperature sensor in the tank, and a control unit;

[0008] The flow-added water-heat treatment device is connected to the horizontal germination tank; the flow-added water-heat treatment device includes a steam generating device, a spray humidifying device, an air supply heating device and a drying exhaust device; the steam generating device and the spray humidifying device are connected to the air inlet pipe of the horizontal germination tank for providing moisture and humidity to the horizontal germination tank, the air supply heating device and the drying exhaust device are connected to the exhaust pipe of the horizontal germination tank, the air supply heating device is used to provide hot air to the horizontal germination tank, and the drying exhaust device is used to dry and exhaust the horizontal germination tank;

[0009] The germination tank body is provided with an internal humidity sensor and an internal temperature sensor; the horizontal germination tank comprises a germination tank body, an intermediate shaft and a rotating mechanism;

[0010] The germination tank body is provided with a humidity detection port, an observation port and a feeding port. One end of the intermediate shaft penetrates into the germination tank body, and the other end is located outside the germination tank body and connected to the first bearing.

[0011] The exhaust pipe and the air inlet pipe are installed on the middle shaft of the germination tank body. The exhaust pipe is located inside the germination tank body and is provided with a plurality of exhaust ports. The air inlet pipe is located inside the germination tank body and is provided with a plurality of air inlets.

[0012] The germination tank body is connected to a rotating mechanism, and the rotating mechanism drives the germination tank body to rotate.

[0013] The humidity sensor in the tank is used to detect the humidity in the germination tank body; the temperature sensor in the tank is used to detect the temperature in the germination tank body; during the enrichment process, the germination tank body rotates continuously and drives the rice inside to move. The humidity sensor in the tank detects the humidity in the germination tank body in real time, and the temperature sensor in the tank detects the temperature in the germination tank body in real time, and transmits the detected data to the control unit. The control unit compares the detected value with the target preset value. When the humidity is lower than the preset humidity, the steam generator and the spray humidifying device are controlled to start supplying steam to increase the relative humidity. When the humidity is higher than the preset humidity, the drying exhaust device is controlled to exhaust. When the temperature is lower than the preset temperature, the air supply heating device is controlled to start. After the enrichment is completed and during the drying process, the drying exhaust device is controlled to discharge water vapor to reduce the humidity in the tank and achieve the purpose of drying.

[0014] In the above solution, a seal is provided at the connection between the intermediate shaft and the germination tank body.

[0015] In the above solution, the rotating mechanism includes a motor, a driving shaft, a driven shaft, a second bearing, a coupling, a roller and a transmission mechanism;

[0016] The output shaft of the motor is connected to the driving shaft, the driving shaft is connected to the driven shaft through a coupling, and the driving shaft and the driven shaft are respectively supported by second bearings; the roller includes two driving wheels and two driven wheels; the driving wheel is installed on the driving shaft, and the driven wheel is installed on the driven shaft, and the driving wheel and the driven wheel are respectively connected to the germination tank body through a transmission mechanism to drive the germination tank body to rotate.

[0017] In the above solution, the discharging auxiliary mechanism includes a push rod motor, a third bearing, and a fastening connector;

[0018] One end of the push rod motor is connected to one side of the germination tank body, and the fastening connector is arranged on the other side of the germination tank body, and the fastening connector is connected to the third bearing.

[0019] In the above solution, the steam generating device includes a steam generator, a steam pressure reducing valve and a steam automatic valve;

[0020] The spray humidifying device includes a water supply mechanism, a wet heat mixer, a temperature sensor, a flow meter, and a solenoid valve;

[0021] The steam generator is connected to the air inlet of the wet heat mixer through a pipeline, the water supply mechanism is connected to the water inlet of the wet heat mixer through a pipeline, water vapor and cold water are mixed in the wet heat mixer, a steam pressure reducing valve and a steam automatic valve are provided on the pipeline connecting the steam generator and the wet heat mixer; a flow meter and a solenoid valve are provided on the pipeline connecting the water supply mechanism and the wet heat mixer; the air inlet of the wet heat mixer is connected to the first air outlet of the induced draft fan through a pipeline, and the air outlet of the wet heat mixer is connected to the air inlet pipe through a pipeline; a temperature sensor is provided on the pipeline connecting the wet heat mixer and the air inlet pipe, and an exhaust pipe has an atomizing nozzle installed on multiple exhaust ports in the germination tank body.

[0022] The temperature sensor is used to detect the temperature at the outlet of the hot and wet mixer; when the water vapor and cold water are mixed in the hot and wet mixer to a preset enrichment temperature, the control unit controls the induced draft fan to transport the mixed gas-liquid mixture into the germination tank body, and sprays the mixture into the germination tank body in the form of atomized water through an atomizing nozzle installed on multiple exhaust ports in the germination tank body through an exhaust pipe, so that the rice in the germination tank body evenly receives moisture and a certain humidity is maintained in the germination tank body during the enrichment process, which is conducive to the enrichment of GABA and its migration into the grains.

[0023] In the above scheme, the air supply heating device includes a heater, a fresh air control valve and an induced draft fan; the second air outlet of the induced draft fan is connected to the germination tank body through a pipe, and a heater and a fresh air control valve are provided on the pipe connecting the second air outlet of the induced draft fan and the germination tank body; the heater is used to heat the air in the pipe. During the enrichment process, hot air is introduced into the germination tank body to increase the temperature inside the germination tank, activate glutamate decarboxylase, and generate GABA; and during the drying process, after the steam generator stops working, hot air is introduced into the germination tank body to make the temperature inside the germination tank reach a certain level, thereby reducing the moisture content of the rice.

[0024] Furthermore, the drying exhaust device includes a drying exhaust valve and an exhaust pipe and an exhaust port placed on the middle shaft inside the germination tank body;

[0025] The second air outlet of the induced draft fan is connected to the exhaust pipe of the germination tank body through a pipeline, and an isolation control valve is arranged between the fresh air control valve and the exhaust valve.

[0026] When exhaust is required, the control unit closes the isolation control valve and opens the exhaust valve to allow the gas discharged from the exhaust pipe to be discharged through the exhaust valve. When air needs to be supplied to the germination tank for heating, the isolation control valve is opened and the exhaust valve is closed to allow hot air to enter the germination tank through the exhaust pipe. The fresh air control valve is used to control the flow rate of hot air entering.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] (1) The GABA enrichment device of the present invention integrates the functions of moistening, enriching and drying wheat, which can save investment and floor space. In addition, during the enrichment process of rice GABA, the horizontal germination tank rotates continuously, which allows the rice to evenly receive oxygen, moisture and heat, which is beneficial to the synthesis of GABA.

[0029] (2) The GABA content in the enriched brown rice of the present invention is greatly increased, and the continuous migration of GABA from the germ to the inner endosperm is promoted, thereby greatly increasing the GABA content in the endosperm. Even if refined white rice prepared from the rice is consumed, sufficient GABA intake can be guaranteed every day, thereby ensuring both taste and nutritional value.

[0030] (3) The water absorption rate during the enrichment process and the water diffusion rate from the inside to the outside during the drying process of the utility model are both slow, and the cracking rate of the enriched rice is low, which greatly improves its processing quality;

[0031] (4) The hardness of the brown rice and white rice prepared from the enriched rice of the present invention is lower and the stickiness is increased, which greatly improves the edible quality of the cooked rice;

[0032] (5) The utility model uses a lower amount of water during the enrichment process and a shorter enrichment time, which can reduce the reproduction of microorganisms, reduce the generation of odor, and improve its sanitary quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the structure of the rice GABA enrichment device;

[0034] Figure 2 This is the structural principle diagram of the germination tank in the rice GABA enrichment device.

[0035] In the figure: 1. Horizontal germination tank; 2. Drying exhaust valve; 3. Isolation control valve; 4. Fresh air control valve; 5. Heater; 6. Induced draft fan; 7. Moist heat mixer; 8. Humidity sensor; 9. Flow meter; 10. Solenoid valve; 11. Automatic steam valve; 12. Steam pressure reducing valve; 13. Steam trap; 14. Humidity sensor in the tank; 15. Temperature sensor in the tank; 101. Humidity detection port; 102. Observation port; 103. Feeding port; 104. Germination tank body; 105. Intermediate shaft; 106. Exhaust port; 107. Air inlet; 108. Seal; 109. First bearing; 110. Exhaust pipe; 111. Air inlet pipe; 112. Motor; 113. Second bearing; 114. Push rod motor; 115. Coupling; 16. Roller; 17. Third bearing; 18. Fasteners. DETAILED DESCRIPTION

[0036] The following describes in detail embodiments of the present invention, 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 intended to explain the present invention, and should not be construed as limiting the present invention.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "front", "back", "left", "right", "up", "down", "axial", "radial", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships 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 cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0038] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0039] Figure 1 The figure shows a preferred embodiment of the rice GABA enrichment device based on the flow-added water and heat treatment of the present invention. The rice GABA enrichment device based on the flow-added water and heat treatment integrates the functions of moistening, germination and drying, and includes a horizontal germination tank 1, a flow-added water and heat treatment device, a humidity sensor 14 in the tank, a temperature sensor 15 in the tank and a control unit.

[0040] The flow-added water-heat treatment device is connected to the horizontal germination tank 1; the flow-added water-heat treatment device includes a steam generating device, a spray humidifying device, an air supply heating device and a drying exhaust device; the steam generating device and the spray humidifying device are connected to the air inlet pipe 111 of the horizontal germination tank 1 for providing moisture and humidity to the horizontal germination tank 1, the air supply heating device and the drying exhaust device are connected to the exhaust pipe 110 of the horizontal germination tank 1, the air supply heating device is used to provide hot air to the horizontal germination tank 1, and the drying exhaust device is used to dry and exhaust the horizontal germination tank 1;

[0041] The germination tank body 104 is provided with an internal humidity sensor 14 and an internal temperature sensor 15; the internal humidity sensor 14 is used to detect the humidity in the germination tank body 104; the internal temperature sensor 15 is used to detect the temperature in the germination tank body 104;

[0042] During the enrichment process, the germination tank body 104 rotates continuously and drives the rice inside to move. The humidity sensor 14 in the tank detects the humidity in the germination tank body 104 in real time, and the temperature sensor 15 in the tank detects the temperature in the germination tank body 104 in real time, and transmits the detected data to the control unit. The control unit compares the detected value with the target preset value. When the humidity is lower than the preset humidity, the steam generator and the spray humidifying device are controlled to start supplying steam to increase the relative humidity. When the humidity is higher than the preset humidity, the drying exhaust device is controlled to exhaust. When the temperature is lower than the preset temperature, the air supply heating device is controlled to start. After the enrichment is completed and during the drying process, the drying exhaust device is controlled to discharge water vapor to reduce the humidity in the tank and achieve the purpose of drying.

[0043] like Figure 2 As shown, the horizontal germination tank 1 includes a germination tank body 104, an intermediate shaft 105, a rotating mechanism and a discharging auxiliary mechanism;

[0044] The germination tank body 104 is provided with a humidity detection port 101, an observation port 102 and a feeding port 103. The humidity detection port 101 is used to facilitate taking out rice from the germination tank body 104 to detect its moisture content, the observation port 102 is used to observe the situation inside the germination tank body 104, and the feeding port 103 is used for adding materials.

[0045] One end of the intermediate shaft 105 penetrates into the germination tank body 104, and the other end is located outside the germination tank body 104 and connected to the first bearing 109, and a seal 108 is provided at the connection between the intermediate shaft 105 and the germination tank body 104;

[0046] The exhaust pipe 110 and the air intake pipe 111 are installed on the intermediate shaft 105 of the germination tank body 104. The exhaust pipe 110 is provided with a plurality of exhaust ports 106 on a section inside the germination tank body 104. The air intake pipe 111 is provided with a plurality of air intake ports 107 on a section inside the germination tank body 104.

[0047] The germination tank body 104 is connected to the rotating mechanism, and the rotating mechanism drives the germination tank body 104 to rotate. The germination tank body 104 rotates continuously and drives the rice to move, which is cyclical. During the moistening process, the rice is evenly mixed with water; during the enrichment process, the rice is evenly exposed to temperature, humidity and oxygen, thereby enriching GABA in a hot and humid environment; during the drying process, the rice is evenly heated, which is conducive to the migration of water from the inside of the grain to the outside.

[0048] The rotating mechanism includes a motor 112, a driving shaft, a driven shaft, a second bearing 113, a coupling 115, a roller 16 and a transmission mechanism;

[0049] The output shaft of the motor 112 is connected to the driving shaft, which is connected to the driven shaft via a coupling 115. The driving shaft and the driven shaft are respectively supported by a second bearing 113. The roller 16 includes two driving wheels and two driven wheels. The driving wheel is mounted on the driving shaft, and the driven wheel is mounted on the driven shaft. The driving wheel and the driven wheel are respectively connected to the germination tank body 104 via a transmission mechanism, driving the germination tank body 104 to rotate. The transmission mechanism is a friction pair or a gear. The main function of the coupling 115 is to connect the driving shaft and the driven shaft and transmit motion and torque to ensure the stability and efficiency of power transmission. The coupling 115 also has the function of reducing vibration and noise during machine operation, improving the stability and reliability of the machine, and thus protecting the connected parts from excessive loads.

[0050] The discharging auxiliary mechanism includes a push rod motor 114, a third bearing 17, and a fastening connector 18; one end of the push rod motor 114 is connected to one side of the germination tank body 104, and the fastening connector 18 is provided on the other side of the germination tank body 104 at the discharge port side, and the fastening connector 18 is connected to the third bearing 17; specifically, in a specific embodiment of the present utility model, when the germination tank body 104 is in operation, the fastening connector 18 is loosened from the germination tank body 104, and the germination tank body 104 rotates normally. When discharging, the fastening connector 18 is connected to the germination tank body 104, and the fastening connector 18 is connected to the third bearing 17 as a whole. The power of the push rod motor 114 is turned on, the push rod of the push rod motor 114 is raised, and the left side of the germination tank body 104 is fixed by the fastening connector 18 and rotates with the third bearing 17, pushing the right side of the germination tank body 104 to rise, and the germination tank body 104 is low on the left and high on the right, so that the material is discharged.

[0051] The steam generating device includes a steam generator, a steam pressure reducing valve 12 and a steam automatic valve 11; the spray humidifying device includes a water supply mechanism, a wet heat mixer 7, a temperature sensor 8, a flow meter 9, and a solenoid valve 10; the steam generator is connected to the air inlet of the wet heat mixer 7 through a pipeline, and the water supply mechanism is connected to the water inlet of the wet heat mixer 7 through a pipeline, and water vapor and cold water are mixed in the wet heat mixer 7. The steam pressure reducing valve 12 and the steam automatic valve 11 are provided on the pipeline connecting the steam generator and the wet heat mixer 7; the flow meter 9 and the solenoid valve 10 are provided on the pipeline connecting the water supply mechanism and the wet heat mixer 7; the air inlet of the wet heat mixer 7 is connected to the first air outlet of the induced draft fan 6 through a pipeline, and the outlet of the wet heat mixer 7 is connected to the air inlet pipe 111 through a pipeline; the pipeline connecting the wet heat mixer 7 and the air inlet pipe 111 is provided with a temperature sensor 8 for detecting the temperature of the outlet of the wet heat mixer 7.

[0052] The steam generator and spray humidifier are primarily designed to provide moisture and humidity to the interior of the horizontal germination tank 1. Water vapor is mixed with cold water in the wet-heat mixer 7 to the desired enrichment temperature, then transported to the germination tank body 104 by the induced draft fan 6. The water vapor is then sprayed into the germination tank body 104 in the form of atomized water via atomizing nozzles installed at multiple exhaust ports 106 within the germination tank body 104 through an exhaust pipe 110. This allows the rice in the germination tank body 104 to receive moisture evenly, maintaining a certain humidity level during the enrichment process, which is beneficial to the enrichment of GABA and its migration into the grains.

[0053] The air supply heating device includes a heater 5, a fresh air control valve 4 and an induced draft fan 6; the second air outlet of the induced draft fan 6 is connected to the germination tank body 104 through a pipeline, and the heater 5 and the fresh air control valve 4 are provided on the pipeline connecting the second air outlet of the induced draft fan 6 and the germination tank body 104; the heater 5 is used to heat the air in the pipeline. During the enrichment process, hot air is introduced into the germination tank body 104 to increase the temperature inside the germination tank body 104, activate glutamate decarboxylase, and generate GABA; and during the drying process, after the steam generator stops working, hot air is introduced into the germination tank body 104 to make the temperature inside the germination tank body 104 reach a certain level, thereby reducing the moisture content of the rice.

[0054] The drying exhaust device includes a drying exhaust valve 2 and an exhaust pipe 110 and an exhaust port 106 placed on the middle shaft 105 in the germination tank body 104, which are used to discharge water vapor after the enrichment is completed and during the drying process to reduce the humidity in the tank and achieve the purpose of drying.

[0055] In a specific embodiment of the present invention, the second air outlet of the induced draft fan 6 is connected to the exhaust pipe 110 of the germination tank body 104 through a pipeline, and an isolation control valve 3 is provided between the fresh air control valve 4 and the exhaust valve 2; when exhaust is required, the isolation control valve 3 is closed, and the exhaust valve 2 is opened, so that the gas discharged from the exhaust pipe 110 is discharged through the exhaust valve 2; when air needs to be supplied to the germination tank body 104 for heating, the isolation control valve 3 is opened, and the exhaust valve 2 is closed, so that hot air enters the germination tank body 104 through the exhaust pipe 110, and the flow rate of hot air entering is controlled by the fresh air control valve 4.

[0056] A sewage pipe is also provided, which is connected to the steam pipe and the sewage outlet of the hot and wet mixer 7 respectively; a steam trap 13 is provided on the pipeline connecting the sewage pipe and the steam pipe.

[0057] The working process of the rice GABA enrichment device based on the flow-added water heat treatment for enriching GABA in rice is as follows:

[0058] During the GABA enrichment process of the rice, the horizontal germination tank 1 humidifies the rice by using a steam generating device and a spray humidifying device of the flow water-adding heat treatment device and a flow water-adding heat treatment method, and simultaneously heats the rice by an air supply heating device, so that the moisture and temperature required for enrichment are reached in the germination tank body 104. The germination tank body 104 is rotated while atomizing water and heating. When the germination tank body 104 rotates, the rice inside is driven to move, so that the rice is evenly exposed to temperature, humidity and oxygen. The rice enriches GABA in a hot and humid environment, and GABA is continuously generated while migrating into the interior of the grain along with the water. After the enrichment is completed, the rice is dried.

[0059] The humidity sensor 14 in the tank detects the humidity in the germination tank body 104 in real time, and the temperature sensor 15 in the tank detects the temperature in the germination tank body 104 in real time, and transmits the detected humidity and temperature data to the control unit, which compares the detected value with the target preset value. When the humidity is lower than the preset humidity, the steam generator and the spray humidification device are controlled to start supplying steam to increase the relative humidity. When the humidity is higher than the preset humidity, the drying exhaust device is controlled to exhaust to reduce the humidity; when the temperature is lower than the preset temperature, the air supply heating device is controlled to start to send hot air into the germination tank body 104.

[0060] After the enrichment is completed and during the drying process, the drying exhaust device is controlled to discharge water vapor.

[0061] During the operation of the device, preferably, the flow-adding water heat treatment is to humidify the rice in the germination tank body 104 by using atomization humidification at a humidification rate of 0.5% / h~2.5% / h until the moisture content of the rice reaches 18%~24%; the purpose of humidifying the rice is to activate glutamate decarboxylase after the moisture content of the rice is increased, catalyze the decarboxylation reaction of glutamate, and generate GABA;

[0062] During the operation of the device, preferably, the heating is to maintain the relative humidity of the air in the germination tank body 104 at 75% to 95% and the temperature at 55 to 75° C. by the air supply heating device; the purpose of heating the rice is to increase the activity of glutamate decarboxylase, catalyze the decarboxylation reaction of glutamate, and generate GABA;

[0063] During the operation of the device, preferably, the enrichment process is to maintain the temperature of the germination tank body 104 at 55-75°C by the air supply heating device, while maintaining the moisture content of the rice at 18%-24%, and to maintain it for 4-6 hours under the condition that the germination tank is continuously rotated;

[0064] During the operation of the device, preferably, the GABA migration utilizes the water solubility and concentration gradient of GABA to cause it to migrate into the grain while it is continuously generated, gradually diffusing the GABA with a higher concentration in the germ of the rice grain to the endosperm, thereby increasing the GABA content in the white rice prepared from the rice grain.

[0065] During operation of this device, preferably, the drying process involves maintaining the air temperature within the germination tank body 104 at 35-50°C to dry the rice using an air supply heating device, and reducing the humidity within the germination tank body 104 to 10-30% using an induced draft fan 6. Simultaneously, the germination tank body 104 is continuously rotated until the moisture content of the rice reaches 12-14.5%. Low-temperature drying ensures that the nutrients in the brown rice are not lost, and that moisture diffuses slowly from the inside out, thereby maintaining better workability and nutritional quality of the rice.

[0066] In a specific working process of this device:

[0067] Rice with a moisture content of 14% is cleaned of impurities and husks and placed in a horizontal germination tank 1. The rice is then sprayed with water at a rate of 0.7% / h by the fluid water-addition and heat-treatment device, bringing the moisture content to 18%. While spraying water, hot air is introduced into the germination tank body 104, maintaining the temperature at 55°C and the humidity at 95%. Simultaneously with the atomization and heating, the germination tank body 104 is rotated by a rotating mechanism, driving the rice with it. This cycle repeats, uniformly exposing the rice to temperature, humidity, and oxygen, and enriching it under these conditions for 6 hours. During the enrichment process, the humidity sensor 14 in the tank detects the humidity in the germination tank body 104 in real time, and the temperature sensor 15 in the tank detects the temperature in the germination tank body 104 in real time, and transmits the detected humidity and temperature data to the control unit. The control unit compares the detected value with the target preset value. When the humidity is lower than the preset humidity, the steam generator and the spray humidification device are controlled to start supplying steam to increase the relative humidity. When the humidity is higher than the preset humidity, the drying exhaust device is controlled to exhaust and reduce the humidity; when the temperature is lower than the preset temperature, the air supply heating device is controlled to start and send hot air into the germination tank body 104; after the enrichment is completed, cold air is introduced to reduce the temperature in the germination tank body 104 to 35°C, and the humidity is reduced to 10% by the induced draft fan. At the same time, the germination tank is continuously rotated. Under this condition, the moisture content of the rice is dried to about 14%.

[0068] Table 1 shows the processing quality of brown rice using different enrichment methods. The GABA content in brown rice and white rice prepared from rice grains treated with the enrichment device of the present invention increased from 42.26 mg / kg and 8.03 mg / kg to 246 mg / kg and 205 mg / kg, respectively. Furthermore, the GABA content in brown rice and white rice treated with the feed water-heat method was 1.44 times and 1.99 times higher than that of the traditional soaking germination method, and 1.22 times and 1.24 times higher than that of the method used in patent CN205597054U. The GABA content in the soaked and germinated white rice accounted for 60% of the entire grain, while the GABA content in the white rice treated with the feed water-heat method accounted for 83% of the entire grain. Therefore, the enrichment device of the present invention significantly increases the GABA content in brown rice and facilitates the migration of GABA into the grain interior, thereby improving the nutritional value of both brown and white rice.

[0069] Table 1 GABA content in brown rice and white rice under different treatments (mg / kg)

[0070]

[0071] Note: GABA content is calculated on a dry basis; different capital letters in the same column indicate significant differences ( p <0.05).

[0072] In another specific working process of this device:

[0073] Rice with a moisture content of 14% is cleaned of impurities and husks and placed in a horizontal germination tank 1. Water is then sprayed onto the rice in the germination tank at a rate of 2.5% / h through the fluid water-addition and heat-treatment device, bringing the rice moisture content to 24%. While spraying water, hot air is introduced into the germination tank body 104, maintaining the temperature at 75°C and the humidity at 75%. Simultaneously with the atomization and heating, the germination tank body 104 is rotated by a rotating mechanism, driving the rice with it. This cycle repeats, uniformly exposing the rice to temperature, humidity, and oxygen, and enriching it under these conditions for 4 hours. During the enrichment process, the humidity sensor 14 in the tank detects the humidity in the germination tank body 104 in real time, and the temperature sensor 15 in the tank detects the temperature in the germination tank body 104 in real time, and transmits the detected humidity and temperature data to the control unit. The control unit compares the detected value with the target preset value. When the humidity is lower than the preset humidity, the steam generator and the spray humidification device are controlled to start supplying steam to increase the relative humidity. When the humidity is higher than the preset humidity, the drying exhaust device is controlled to exhaust and reduce the humidity; when the temperature is lower than the preset temperature, the air supply heating device is controlled to start and send hot air into the germination tank body 104; after the enrichment is completed, cold air is introduced to reduce the temperature in the germination tank to 50°C, and the humidity is reduced to 30% by the induced draft fan. At the same time, the germination tank is continuously rotated. Under this condition, the moisture content of the rice is dried to about 12%.

[0074] Table 2 shows the cracking rate and total bacterial count of brown rice treated with different enrichment methods. Compared with soaking and germination, the cracking rate of rice treated with the enrichment device of the utility model is lower. Compared with untreated raw brown rice, soaking and germination can significantly increase the total bacterial count in brown rice, but the total bacterial count in brown rice after four cycles of wet heat treatment is significantly reduced. Therefore, the enrichment device of the utility model can achieve better processing quality and hygienic quality of brown rice by using a lower water addition amount, shorter enrichment time, and higher enrichment temperature.

[0075] Table 2 Cracking rate and total bacterial count of brown rice under different treatments

[0076]

[0077] Note: Different letters in the same column indicate significant differences ( p <0.05).

[0078] In another specific working process of this device:

[0079] Rice with a moisture content of 14% is cleaned of impurities and husks and placed in a horizontal germination tank 1. The water-adding and heat-treatment device then sprays water into the rice in the germination tank at a rate of 1.5% / h, bringing the rice moisture content to 21%. While spraying water, hot air is introduced into the germination tank body 104, maintaining the temperature at 65°C and the humidity at 85%. The germination tank is rotated while the water is being atomized and heated, driving the rice in motion. This cycle repeats, uniformly absorbing the temperature, humidity, and oxygen levels of the rice, and enriching it under these conditions for 5 hours. During the enrichment process, the humidity sensor 14 in the tank detects the humidity in the germination tank body 104 in real time, and the temperature sensor 15 in the tank detects the temperature in the germination tank body 104 in real time, and transmits the detected humidity and temperature data to the control unit. The control unit compares the detected value with the target preset value. When the humidity is lower than the preset humidity, the steam generator and the spray humidification device are controlled to start supplying steam to increase the relative humidity. When the humidity is higher than the preset humidity, the drying exhaust device is controlled to exhaust and reduce the humidity; when the temperature is lower than the preset temperature, the air supply heating device is controlled to start and send hot air into the germination tank body 104; after the enrichment is completed, cold air is introduced to reduce the temperature in the germination tank to 45°C, and the humidity is reduced to 20% by the induced draft fan. At the same time, the germination tank is continuously rotated. Under this condition, the moisture content of the rice is dried to about 13%.

[0080] The processing quality of brown rice under different enrichment methods is shown in Table 3. Compared with soaking and germination, the brown rice and white rice prepared by using the rice treated by the enrichment device of the utility model have lower hardness and higher stickiness. Therefore, the enrichment device of the utility model can improve the edible quality of brown rice and white rice.

[0081] Table 3 Texture characteristics of brown rice / white rice under different treatments

[0082]

[0083] Note: Different capital letters in the same column indicate significant differences between brown rice ( p <0.05), different lowercase letters in the same column indicate significant differences between white rice ( p <0.05).

[0084] It should be understood that although this specification is described according to various embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0085] The series of detailed descriptions listed above are only specific descriptions of feasible embodiments of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent embodiments or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A rice GABA enrichment device based on fed water heat treatment, characterized in that: It comprises a horizontal germination tank (1), a flow-added water heat treatment device, a humidity sensor (14) in the tank, a temperature sensor (15) in the tank, and a control unit; The flow-adding water and heat treatment device is connected to the horizontal germination tank (1); the flow-adding water and heat treatment device comprises a steam generating device, a spray humidifying device, an air supply heating device and a drying and exhausting device; the steam generating device and the spray humidifying device are connected to the air inlet pipe (111) of the horizontal germination tank (1), and the air supply heating device and the drying and exhausting device are connected to the exhaust pipe (110) of the horizontal germination tank (1); The horizontal germination tank (1) comprises a germination tank body (104), an intermediate shaft (105) and a rotating mechanism; The germination tank body (104) is provided with an internal humidity sensor (14) and an internal temperature sensor (15); The germination tank body (104) is provided with a humidity detection port (101), an observation port (102) and a feeding port (103); one end of the intermediate shaft (105) is inserted into the germination tank body (104), and the other end is located outside the germination tank body (104) and connected to the first bearing (109); The exhaust pipe (110) and the air intake pipe (111) are mounted on the intermediate shaft (105) of the germination tank body (104); a section of the exhaust pipe (110) located inside the germination tank body (104) is provided with a plurality of exhaust ports (106); a section of the air intake pipe (111) located inside the germination tank body (104) is provided with a plurality of air intake ports (107); The germination tank body (104) is connected to a rotating mechanism, and the rotating mechanism drives the germination tank body (104) to rotate.

2. The rice GABA enrichment device based on the flow-added water heat treatment according to claim 1, characterized in that, The rotating mechanism includes a motor (112), a driving shaft, a driven shaft, a second bearing (113), a coupling (115), a roller (16), and a transmission mechanism; The output shaft of the motor (112) is connected to the driving shaft, and the driving shaft is connected to the driven shaft through a coupling (115), and the driving shaft and the driven shaft are respectively supported by second bearings (113); the roller (16) includes two driving wheels and two driven wheels; the driving wheel is mounted on the driving shaft, and the driven wheel is mounted on the driven shaft, and the driving wheel and the driven wheel are respectively connected to the germination tank body (104) through a transmission mechanism, driving the germination tank body (104) to rotate.

3. The rice GABA enrichment device based on the flow-added water heat treatment according to claim 1, characterized in that, It also includes a discharging auxiliary mechanism; the discharging auxiliary mechanism includes a push rod motor (114), a third bearing (17), and a fastening connection member (18); One end of the push rod motor (114) is connected to one side of the germination tank body (104), and the fastening connector (18) is provided on the other side of the germination tank body (104), and the fastening connector (18) is connected to the third bearing (17).

4. The rice GABA enrichment device based on the flow-added water heat treatment according to claim 1, characterized in that, The steam generating device comprises a steam generator, a steam pressure reducing valve (12) and a steam automatic valve (11); The spray humidifying device comprises a water supply mechanism, a wet heat mixer (7), a temperature sensor (8), a flow meter (9) and a solenoid valve (10); The steam generator is connected to the air inlet of the wet heat mixer (7) through a pipeline, the water supply mechanism is connected to the water inlet of the wet heat mixer (7) through a pipeline, and water vapor and cold water are mixed in the wet heat mixer (7). A steam pressure reducing valve (12) and a steam automatic valve (11) are provided on the pipeline connecting the steam generator and the wet heat mixer (7); a flow meter (9) and a solenoid valve (10) are provided on the pipeline connecting the water supply mechanism and the wet heat mixer (7); the air inlet of the wet heat mixer (7) is connected to the first air outlet of the induced draft fan (6) through a pipeline, and the air outlet of the wet heat mixer (7) is connected to the air inlet pipe (111) through a pipeline; a temperature sensor (8) is provided on the pipeline connecting the wet heat mixer (7) and the air inlet pipe (111), and an exhaust pipe (110) is provided with an atomizing nozzle installed on multiple exhaust ports (106) in the germination tank body (104).

5. The rice GABA enrichment device based on the flow-added water heat treatment according to claim 1 is characterized in that, The air supply heating device comprises a heater (5), a fresh air control valve (4) and an induced draft fan (6); a second air outlet of the induced draft fan (6) is connected to the germination tank body (104) through a pipeline, and a heater (5) and a fresh air control valve (4) are provided on the pipeline connecting the second air outlet of the induced draft fan (6) and the germination tank body (104).

6. The rice GABA enrichment device based on the flow-added water heat treatment according to claim 5 is characterized in that, The drying exhaust device comprises a drying exhaust valve (2), an exhaust pipe (110) and an exhaust port (106) disposed on an intermediate shaft (105) within a germination tank body (104); The second air outlet of the induced draft fan (6) is connected to the exhaust pipe (110) of the germination tank body (104) through a pipeline, and an isolation control valve (3) is provided between the fresh air control valve (4) and the exhaust valve (2).

Images