Device for degrading aflatoxin B1 through microwave and ultraviolet synergism
Through the microwave ultraviolet collaborative degradation device, combined with 500W microwave and 20W ultraviolet lamp tube, the problems of low degradation efficiency and high cost of AFB1 are solved, and the efficient degradation of AFB1 in fluid food is achieved, which is suitable for the transformation of existing production lines.
Patent Information
- Application Number
- CN202422512202.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-17
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-10-17
AI Technical Summary
In the existing AFB1 degradation methods, biodegradation costs are high and the effect is difficult to control, and chemical degradation has residual problems, while a single physical method is inefficient and costly, which cannot meet the needs of food production.
The microwave ultraviolet collaborative degradation device is adopted, combined with a 500W microwave generator and a replaceable 365nm and 20W power ultraviolet lamp tube, and the fluid is treated through a serpentine quartz tube to achieve efficient degradation of AFB1.
Under the synergistic action of microwave and ultraviolet light, the degradation rate of AFB1 has increased from 41.2% to 79.8%, and the degradation efficiency has been significantly improved. At the same time, the device is simple in structure and convenient in operation, and is suitable for the transformation of existing production lines.
Smart Images
Figure CN223169135U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of aflatoxin degradation, and particularly relates to a device for synergistically degrading aflatoxin B1 by microwave and ultraviolet light. Background Art
[0002] Aflatoxin B1 (AFB1) is a class of toxic metabolites with a coumarin and bifuran ring structure produced by fungi such as Aspergillus flavus and Aspergillus parasiticus under natural conditions. Research shows that when the human body is exposed to AFB1 for a long time, it will cause DNA damage, and then have effects such as carcinogenesis, teratogenesis, mutagenesis and immunosuppression on the body.
[0003] Among the existing AFB1 degradation methods, the biodegradation method cannot be widely applied due to its high cost and difficult-to-control degradation effect; chemical degradation will cause residues of other chemical substances and is also not suitable for food production; while physical methods such as ultraviolet light and microwave have been widely used in the food industry due to their reliable degradation effects. However, the existing single physical degradation technology has low efficiency and high cost. This device uses microwave and ultraviolet light to synergistically degrade aflatoxin B1, which improves the degradation efficiency and reduces the cost at the same time. Summary of the Utility Model
[0004] In order to overcome the above problems existing in the prior art, the purpose of the utility model is to provide a device for synergistically degrading aflatoxin B1 by microwave and ultraviolet light, which can achieve efficient degradation of AFB1 in fluid, and has the characteristics of being economical and practical, simple in structure, convenient to operate and maintain.
[0005] In order to achieve the above purpose, the technical scheme adopted by the utility model is:
[0006] A device for synergistically degrading aflatoxin B1 by microwave and ultraviolet light includes a microwave generator 5 with an output power of 500W. An interchangeable ultraviolet lamp tube 2 is installed inside the microwave generator 5. A serpentine quartz tube 3 is arranged around the interchangeable ultraviolet lamp tube 2. The inlet end of the serpentine quartz tube 3 is a fluid inlet 6, and the outlet end is a fluid outlet 7. The fluid inlet 6 and the fluid outlet 7 are arranged at the same end.
[0007] The ultraviolet lamp tube 2 is replaced according to the actual sample to be processed. For example, an ultraviolet lamp tube with a wavelength of 365nm and a power of 20W.
[0008] The fluid outlet 7 includes a horizontal pipe and a bent pipe connected to and perpendicular to the horizontal pipe. One end of the horizontal pipe is connected to the outlet end of the serpentine quartz tube 3.
[0009] The horizontal pipe is parallel to the ultraviolet lamp tube 2.
[0010] The bent pipe is parallel to the pipe of the fluid inlet 6.
[0011] Both ends of the ultraviolet lamp tube 2 are respectively arranged on the first fixed bracket 1 and the second fixed bracket 4, and the first fixed bracket 1 and the second fixed bracket 4 are installed inside the microwave generator 5. The beneficial effects of the present utility model are as follows:
[0012] The present utility model can efficiently degrade AFB1 in fluid food. At the same time, it has the characteristics of simple structure, convenient operation and convenient maintenance; the ultraviolet lamp of this device can adjust the corresponding power and wavelength according to different fluid foods; and this device can be added to the existing production line, with small investment and convenient transformation of existing equipment.
[0013] The degradation test of AFB1 in the fluid system was carried out using this device. After being treated under ultraviolet light with a wavelength of 365 nm and a power of 20 W for 10 minutes, the degradation rate of AFB1 was 41.2%. When the microwave power was increased from 0 W to 500 W, the degradation rate of this device was as high as 79.8%. Description of the Drawings
[0014] Figure 1 It is a schematic structural diagram of the device of the present utility model.
[0015] Figure 2 It is a schematic structural diagram of the ultraviolet lamp tube and the serpentine quartz tube.
[0016] Figure 3 It is the degradation effect test of this device for degrading AFB1. Detailed Embodiments
[0017] The present utility model will be further described in detail below with reference to the drawings.
[0018] As Figure 1 、 Figure 2 shown, a device for microwave-ultraviolet collaborative degradation of aflatoxin B1 includes a microwave generator 5. An interchangeable ultraviolet lamp tube 2 is installed inside the microwave generator 5. A serpentine quartz tube 3 is arranged around the interchangeable ultraviolet lamp tube 2. One end of the serpentine quartz tube 3 is a fluid inlet 6, and the other end is a fluid outlet 7. The fluid inlet 6 and the fluid outlet 7 are arranged at the same end;
[0019] The ultraviolet lamp tube 2 can be replaced according to the actual needs of the sample to be processed, such as: an ultraviolet lamp tube with a wavelength of 365 nm and a power of 20 W.
[0020] The fluid outlet 7 includes a section of horizontal pipe and a bent pipe connected to and perpendicular to the horizontal pipe. One end of the horizontal pipe is connected to the outlet end of the serpentine quartz tube 3.
[0021] The horizontal pipe is parallel to the ultraviolet lamp tube 2.
[0022] The bent pipe is parallel to the pipe of the fluid inlet 6.
[0023] Both ends of the ultraviolet lamp tube 2 are respectively arranged on the first fixed bracket 1 and the second fixed bracket 4, and the first fixed bracket 1 and the second fixed bracket 4 are installed inside the microwave generator 5.
[0024] The working principle of the present utility model:
[0025] The fluid enters from the fluid inlet 6, passes through the serpentine quartz tube 3, and flows out from the fluid outlet 7. It is treated by the ultraviolet lamp tube with a wavelength of 365 nm and a power of 20 W in the ultraviolet lamp tube 2, and the power in the microwave generator 5 is 500 W, so as to realize the degradation of AFB1 in the fluid.
[0026] The device for microwave-ultraviolet synergistic degradation of aflatoxin B1 is used to degrade AFB1 in the fluid system. After being treated under ultraviolet light with a wavelength of 365 nm and a power of 20 W for 10 min, the degradation rate of AFB1 is 41.2%. When the microwave power is increased from 0 W to 500 W, the degradation rate of the device is as high as 79.8%. It can be seen that when only 500 W of microwave participates in the degradation, the degradation efficiency of AFB1 is relatively low, while when the microwave acts synergistically with the ultraviolet lamp of 365 nm, the degradation efficiency of AFB1 is greatly improved. This may be caused by the "non-thermal effect" of the microwave. The microwave acts on the AFB1 molecule in the form of an electromagnetic field. The AFB1 molecule will absorb the energy of the microwave, resulting in an increase in their energy level. In this way, the activation energy of the reaction is reduced, making the ultraviolet degradation reaction easier to occur. In addition, the AFB1 molecule that has absorbed the microwave energy will be more active, increasing the effective collision frequency between molecules, significantly accelerating the process of ultraviolet degradation, and thus improving the degradation efficiency. Figure 3 It can be seen that when only 500 W of microwave participates in the degradation, the degradation efficiency of AFB1 is relatively low, while when the microwave acts synergistically with the ultraviolet lamp of 365 nm,the degradation efficiency of AFB1 is greatly improved. This may be caused by the "non-thermal effect" of the microwave. The microwave acts on the AFB1 molecule in the form of an electromagnetic field. The AFB1 molecule will absorb the energy of the microwave, resulting in an increase in their energy level. In this way, the activation energy of the reaction is reduced, making the ultraviolet degradation reaction easier to occur. In addition, the AFB1 molecule that has absorbed the microwave energy will be more active, increasing the effective collision frequency between molecules, significantly accelerating the process of ultraviolet degradation, and thus improving the degradation efficiency.
Claims
1. An apparatus for microwave-ultraviolet synergistic degradation of aflatoxin B1, characterized in that, It includes a microwave generator (5), inside which a replaceable ultraviolet lamp tube (2) is installed. A serpentine quartz tube (3) is arranged around the replaceable ultraviolet lamp tube (2). The inlet end of the serpentine quartz tube (3) is a fluid inlet (6), and the outlet end is a fluid outlet (7). The fluid inlet (6) and the fluid outlet (7) are arranged at the same end.
2. The device for microwave-ultraviolet collaborative degradation of aflatoxin B1 according to claim 1, characterized in that, The ultraviolet lamp tube (2) is an ultraviolet lamp tube with a wavelength of 365 nm and a power of 20 W.
3. The device for synergistically degrading aflatoxin B1 by microwave and ultraviolet according to claim 1, characterized in that, The fluid outlet (7) includes a horizontal pipe and a bent pipe connected to and perpendicular to the horizontal pipe. One end of the horizontal pipe is connected to the outlet end of the serpentine quartz tube (3).
4. The device for microwave-ultraviolet collaborative degradation of aflatoxin B1 according to claim 3, characterized in that, The horizontal pipe is parallel to the ultraviolet lamp tube (2).
5. The device for microwave-ultraviolet collaborative degradation of aflatoxin B1 according to claim 3, characterized in that, The bent pipe is parallel to the pipe of the fluid inlet (6).
6. The device for microwave-ultraviolet collaborative degradation of aflatoxin B1 according to claim 1, characterized in that, Both ends of the ultraviolet lamp tube (2) are respectively arranged on a first fixing bracket (1) and a second fixing bracket (4), and the first fixing bracket (1) and the second fixing bracket (4) are installed inside the microwave generator (5).