CN112858267A - Seafood frozen food safety detection method - Google Patents
Seafood frozen food safety detection method Download PDFInfo
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- CN112858267A CN112858267A CN202110139312.0A CN202110139312A CN112858267A CN 112858267 A CN112858267 A CN 112858267A CN 202110139312 A CN202110139312 A CN 202110139312A CN 112858267 A CN112858267 A CN 112858267A
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/76—Chemiluminescence; Bioluminescence
- G01N21/763—Bioluminescence
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N2021/0106—General arrangement of respective parts
- G01N2021/0112—Apparatus in one mechanical, optical or electronic block
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Abstract
The invention discloses a seafood frozen food safety detection method, relates to the field of food safety detection, and comprises a liquid taking mechanism, a feeding mechanism, a clamping mechanism and a detection mechanism. According to the invention, the second electric push rod and the baffle plate are arranged, after the feeding is finished, a user opens the second electric push rod, the second electric push rod works to enable the baffle plate to move, and the baffle plate shields the light emitting tube, so that mixed liquid in the light emitting tube can be prevented from being spilled out when the light emitting tube shakes, the amount of the mixed liquid in the light emitting tube can not be reduced, the mixing effect of liquid is improved, the waste of the mixed liquid is avoided, the mixed liquid can be prevented from being spilled in the device, and the pollution to the detection device is avoided; and after the mixed liquid in the luminous tube is finished, the user restarts the second electric push rod to reset the baffle and prevent the baffle from contacting with the luminous tube, so that the subsequent detection mechanism can detect the mixed liquid in the luminous tube.
Description
Technical Field
The invention relates to the field of food safety detection, in particular to a seafood frozen food safety detection method.
Background
Frozen foods are divided into chilled foods and frozen foods, and the frozen foods are easy to preserve and widely used for production, transportation and storage of perishable foods such as meat, poultry, aquatic products, milk, eggs, vegetables, fruits and the like; the product is nutritious, convenient, sanitary and economical; the market demand is large, the device occupies an important position in developed countries, and the device is rapidly developed in developing countries.
Meanwhile, the frozen food is stored for a long time, so that the detection device can be used for detecting the frozen food, the detection of the bacteria content of the food is an important means for judging whether the food is safe or not, and the detection device plays an important role.
The method comprises the steps of detecting by adopting detection equipment, extracting a sample by a liquid taking mechanism by the detection equipment, manually controlling by a touch screen, packaging the sample to be detected by a light-emitting tube, controlling by an operation box, adding a buffer solution and a fluorescein mixed solution by a feeding mechanism, improving a proper environment by a constant temperature box, clamping and fixing the light-emitting tube by a clamping mechanism, controlling the feeding mechanism by a control mechanism, and detecting by the detection mechanism; the operation and detection positions are separated by the operation box and the thermostat, and meanwhile, the interference of other mixed bacteria can be effectively avoided by the independent closed space.
The method does not need to be held by an operator, not only can a plurality of detections be carried out simultaneously, but also the detection accuracy is ensured through comparison, the operation labor force is reduced, and the precision is improved; in the detection method, the liquid in the light-emitting tube can be uniformly mixed due to the shaking of the light-emitting tube, but the mixed liquid in the light-emitting tube can be spilled out due to the shaking of the light-emitting tube, so that the waste of the mixed liquid is caused, and the pollution to detection equipment can be caused; simultaneously when first stub bar is with sample and second stub bar and drop buffer solution and fluorescein mixed solution to the luminescent tube in, because there is certain height between first stub bar and second stub bar and luminescent tube to easily lead to sample or buffer solution and fluorescein to add the in-process spill to the luminescent tube, then cause the waste of sample, and influence the interpolation efficiency of sample, buffer solution and fluorescein, and reduced the testing equipment to the detection effect of food.
Disclosure of Invention
The invention aims to: the seafood frozen food safety detection method is provided for solving the problems that mixed liquid is easy to spill when a light-emitting tube shakes, and the subsequent detection effect is influenced by sample spilling possibly caused when a sample or the mixed liquid is added.
In order to achieve the purpose, the invention provides the following technical scheme: a seafood frozen food safety detection method comprises a liquid taking mechanism, a feeding mechanism, a clamping mechanism and a detection mechanism; the food safety detection method comprises the following steps:
the method comprises the following steps:
the sample is extracted through the liquid taking mechanism, the sample is placed in the liquid collecting bottle firstly, then before the sample is injected into the light emitting tube, the splash guard is pulled upwards, the splash guard moves upwards to drive the splash tube to move upwards, the splash tube moves upwards to extrude the return spring and the telescopic rod, the return spring is stressed and compressed, the telescopic rod is stressed and contracted, then a user starts the clamping structure, a clamping plate on the clamping structure clamps the light emitting tube, the splash tube is released after clamping is finished, the return spring recovers elasticity and stretches at the moment, the splash tube is further driven to move downwards, the splash guard moves downwards to enable the splash guard to move downwards, the splash guard contacts the top end of the light emitting tube after moving downwards, then the user opens the electromagnetic valve, the sample to be detected enters the interior of the light emitting tube through the first discharging tube, liquid separation of the sample is realized, and multiple detections can;
step two:
then the drive mechanism is opened to drive the luminous tube to move towards one side, and the step in the step one is repeated to move the splash guard and the splash guard barrel upwards, when the clamping mechanism moves to contact with the movable plate, the user closes the driving mechanism to stop the movement of the light-emitting tube, at the moment, the step in the step one is repeated to reset and move the splash guard and the splash guard downwards, and the bottom of the splash guard contacts with the top end of the light-emitting tube, then the user opens the cover plate to place the buffer solution and the fluorescein mixed solution which need to be added respectively in the container hole, covers the cover plate, when adding, the pull rod can be pressed to lower the piston, the piston moves downwards to make the raw material in the container hole fall into the luminotron from the second feed opening under pressure, then starting the lifting mechanism, and driving the movable plate to move downwards by the lifting mechanism so that the movable plate moves downwards to the top part which is lower than the bottom end of the light-emitting tube;
step three:
after the feeding is finished, a user opens the second electric push rod, the second electric push rod works to enable the baffle to move and enable the baffle to shield the light emitting tube, so that the mixed liquid in the light emitting tube can be prevented from splashing, and then the motor is started to rotate in a reciprocating manner to enable the light emitting tube to shake and enable the interior to be fully mixed; the driving mechanism continuously pushes the light-emitting tube to move rightwards, when the light-emitting tube reaches the side part of the detection mechanism, the clamping mechanism pushes the light-emitting tube in, the cover of the light-emitting tube can rotate due to the blocking of the baffle plate, the cover is closed due to the limitation of the feeding hole along with the entering of the light-emitting tube, the light barrier is opened and sent into the detection box body for detection, and the bacterial pollution degree in food is measured by utilizing a microbial ATP bioluminescence method;
step four:
the user takes out the luminotron after the detection is finished, then pours out the mixed liquid in the luminotron, cleans the luminotron, and the user again clamps the luminotron through the clamping mechanism after the cleaning is finished so as to detect the next sample.
Preferably, in the first step, the sampling mechanism includes a liquid collecting bottle, a fixing ring, a solenoid valve, and a plurality of first discharging pipes.
Preferably, in the first step, the number of the first discharging pipes is the same as that of the light emitting tubes, and the first discharging pipes are located right above the light emitting tubes.
Preferably, in the first step, the diameter of the splash guard is larger than the diameters of the splash guard cylinder and the light emitting tube, and the splash guard cylinder is located on the outer surfaces of the first feeding tube and the second feeding tube.
Preferably, in the second step, the number of the pistons is the same as the number of the assembly holes, and the pistons are matched with the assembly holes.
Preferably, in the second step, the driving mechanism includes two driving motors, a screw rod, a threaded sleeve, a sliding block and a sliding groove, the clamping mechanism includes a fixing plate, a first electric push rod, a clamping plate, a rotating shaft and an anti-slip tooth, the threaded sleeve is connected with one side of the fixing plate, and the first electric push rod is mounted at the top of the fixing plate.
Preferably, in the third step, the diameter of the baffle is larger than that of the light emitting tube, and the baffle is made of stainless steel material.
Preferably, in the second step, the lifting mechanism includes a cylinder and a piston rod, and a cushion pad is installed on one side of the movable plate.
Preferably, in step three, the time required for detecting the mixed liquid inside the luminescent tube is 5-10 min.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the second electric push rod and the baffle plate are arranged, after the feeding is finished, a user opens the second electric push rod, the second electric push rod works to enable the baffle plate to move, and the baffle plate shields the light emitting tube, so that mixed liquid in the light emitting tube can be prevented from being spilled out when the light emitting tube shakes, the amount of the mixed liquid in the light emitting tube can not be reduced, the mixing effect of liquid is improved, the waste of the mixed liquid is avoided, the mixed liquid can be prevented from being spilled in the device, and the pollution to the detection device is avoided; and after the mixed liquid in the luminous tube is finished, the user restarts the second electric push rod to reset the baffle and prevent the baffle from contacting with the luminous tube, so that the subsequent detection mechanism can detect the mixed liquid in the luminous tube.
2. The invention is provided with the splash guard, the reset spring and the telescopic link, before injecting a sample into the luminotron, the splash guard is pulled upwards, the splash guard moves upwards to drive the splash guard to move upwards, the splash guard moves upwards to press the reset spring and the telescopic link, the reset spring is stressed and compressed, the telescopic link is stressed and contracted, then a user starts the clamping structure, a clamping plate on the clamping structure clamps the luminotron, the splash guard is released after clamping, at the moment, the reset spring recovers elasticity and stretches to drive the splash guard to move downwards, the splash guard moves downwards to move the splash guard downwards, the splash guard contacts with the top end of the luminotron after moving downwards, then the user opens the electromagnetic valve, so that the sample to be detected enters the inside of the luminotron through the first material pipe, and after the splash guard contacts with the luminotron, the sample can be prevented from splashing, and further the reduction of the sample amount in the luminotron, simultaneously pour into buffer solution and fluorescein into to the luminotron before, the user repeats above-mentioned step and makes the bottom of splash shield contact with the luminotron once more to can avoid buffer solution and fluorescein to follow the intraductal spill of luminotron, thereby improve the adding efficiency of sample, buffer solution and fluorescein, and promoted the detection result of check out test set to food.
Detailed Description
The following will clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. The following describes an embodiment of the present invention based on its overall structure.
The first embodiment is as follows:
the invention provides a technical scheme that: a seafood frozen food safety detection method comprises a liquid taking mechanism, a feeding mechanism, a clamping mechanism and a detection mechanism; the food safety detection method comprises the following steps:
the method comprises the following steps:
the sample is extracted through the liquid taking mechanism, the sample is placed in the liquid collecting bottle firstly, then before the sample is injected into the light emitting tube, the splash guard is pulled upwards, the splash guard moves upwards to drive the splash tube to move upwards, the splash tube moves upwards to extrude the return spring and the telescopic rod, the return spring is stressed and compressed, the telescopic rod is stressed and contracted, then a user starts the clamping structure, a clamping plate on the clamping structure clamps the light emitting tube, the splash tube is released after clamping is finished, the return spring recovers elasticity and stretches at the moment, the splash tube is further driven to move downwards, the splash guard moves downwards to enable the splash guard to move downwards, the splash guard contacts the top end of the light emitting tube after moving downwards, then the user opens the electromagnetic valve, the sample to be detected enters the interior of the light emitting tube through the first discharging tube, liquid separation of the sample is realized, and multiple detections can;
step two:
then the drive mechanism is opened to drive the luminous tube to move towards one side, and the step in the step one is repeated to move the splash guard and the splash guard barrel upwards, when the clamping mechanism moves to contact with the movable plate, the user closes the driving mechanism to stop the movement of the light-emitting tube, at the moment, the step in the step one is repeated to reset and move the splash guard and the splash guard downwards, and the bottom of the splash guard contacts with the top end of the light-emitting tube, then the user opens the cover plate to place the buffer solution and the fluorescein mixed solution which need to be added respectively in the container hole, covers the cover plate, when adding, the pull rod can be pressed to lower the piston, the piston moves downwards to make the raw material in the container hole fall into the luminotron from the second feed opening under pressure, then starting the lifting mechanism, and driving the movable plate to move downwards by the lifting mechanism so that the movable plate moves downwards to the top part which is lower than the bottom end of the light-emitting tube;
step three:
after the feeding is finished, a user opens the second electric push rod, the second electric push rod works to enable the baffle to move and enable the baffle to shield the light emitting tube, so that the mixed liquid in the light emitting tube can be prevented from splashing, and then the motor is started to rotate in a reciprocating manner to enable the light emitting tube to shake and enable the interior to be fully mixed; the driving mechanism continuously pushes the light-emitting tube to move rightwards, when the light-emitting tube reaches the side part of the detection mechanism, the clamping mechanism pushes the light-emitting tube in, the cover of the light-emitting tube can rotate due to the blocking of the baffle plate, the cover is closed due to the limitation of the feeding hole along with the entering of the light-emitting tube, the light barrier is opened and sent into the detection box body for detection, and the bacterial pollution degree in food is measured by utilizing a microbial ATP bioluminescence method;
step four:
the user takes out the luminotron after the detection is finished, then pours out the mixed liquid in the luminotron, cleans the luminotron, and the user again clamps the luminotron through the clamping mechanism after the cleaning is finished so as to detect the next sample.
Furthermore, in the first step, the sampling mechanism comprises a liquid collecting bottle, a fixing ring, a plurality of electromagnetic valves and a plurality of first discharging pipes, so that a sample can be conveniently added into the liquid collecting bottle, and the sample can enter the light-emitting tube through the first discharging pipes, so that the sample can be conveniently added into the light-emitting tube; in step one, the quantity of first unloading pipe is the same with the quantity of luminotron, and first unloading pipe is located the luminotron directly over, can make the sample add to the luminotron of difference inside to detection mechanism detects a plurality of luminotrons simultaneously, has then improved the detection efficiency to food.
Furthermore, in the first step, the diameter of the splash guard is larger than the diameters of the splash guard and the light-emitting tube, the splash guard is positioned on the outer surfaces of the first discharging tube and the second discharging tube, and the splash guard can prevent samples from splashing out of the light-emitting tube when being added, so that the waste of the samples is avoided; in step two, the quantity of piston is the same with the quantity of collection dress hole, and piston and collection dress hole looks adaptation, and the piston removes and to make the inside buffer solution of collection dress hole and fluorescein pass through the second unloading pipe and enter into the luminotron inside to the luminotron mixes buffer solution, fluorescein and sample.
Furthermore, in the second step, the driving mechanism comprises two driving motors, a screw rod, a threaded sleeve, a sliding block and a sliding groove, the clamping mechanism comprises a fixed plate, a first electric push rod, a clamping plate, a rotating shaft and anti-skidding teeth, the threaded sleeve is connected with one side of the fixed plate, the first electric push rod is mounted at the top of the fixed plate, the driving motors can drive the screw rod to rotate when working, the screw rod rotates to drive the threaded sleeve to move, the threaded sleeve moves to drive the clamping mechanism to move, and further the light-emitting tube can be driven to move towards the direction of the detection mechanism; in the third step, the diameter of the baffle is larger than that of the light-emitting tube, the baffle is made of stainless steel materials, and the baffle can prevent the mixed liquid in the light-emitting tube from spilling, so that the mixing efficiency of the mixed liquid in the light-emitting tube is improved.
Furthermore, in the second step, the lifting mechanism comprises a cylinder and a piston rod, a cushion pad is installed on one side of the movable plate, the cushion pad can prevent the clamping mechanism from directly impacting the movable plate, so that the cushion pad can buffer the impact force applied by the clamping mechanism, and the stability of the light-emitting tube clamped by the clamping mechanism is further improved; in the third step, the time for detecting the mixed liquid in the luminescent tube is 5-10min, so that the detection effect of the detection mechanism on the mixed liquid is improved.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Reference signs in the claims shall not be construed as limiting the claim concerned.
Claims (9)
1. A seafood frozen food safety detection method comprises a liquid taking mechanism, a feeding mechanism, a clamping mechanism and a detection mechanism; the food safety detection method comprises the following steps:
the method comprises the following steps:
the sample is extracted through the liquid taking mechanism, the sample is placed in the liquid collecting bottle firstly, then before the sample is injected into the light emitting tube, the splash guard is pulled upwards, the splash guard moves upwards to drive the splash tube to move upwards, the splash tube moves upwards to extrude the return spring and the telescopic rod, the return spring is stressed and compressed, the telescopic rod is stressed and contracted, then a user starts the clamping structure, a clamping plate on the clamping structure clamps the light emitting tube, the splash tube is released after clamping is finished, the return spring recovers elasticity and stretches at the moment, the splash tube is further driven to move downwards, the splash guard moves downwards to enable the splash guard to move downwards, the splash guard contacts the top end of the light emitting tube after moving downwards, then the user opens the electromagnetic valve, the sample to be detected enters the interior of the light emitting tube through the first discharging tube, liquid separation of the sample is realized, and multiple detections can;
step two:
then the drive mechanism is opened to drive the luminous tube to move towards one side, and the step in the step one is repeated to move the splash guard and the splash guard barrel upwards, when the clamping mechanism moves to contact with the movable plate, the user closes the driving mechanism to stop the movement of the light-emitting tube, at the moment, the step in the step one is repeated to reset and move the splash guard and the splash guard downwards, and the bottom of the splash guard contacts with the top end of the light-emitting tube, then the user opens the cover plate to place the buffer solution and the fluorescein mixed solution which need to be added respectively in the container hole, covers the cover plate, when adding, the pull rod can be pressed to lower the piston, the piston moves downwards to make the raw material in the container hole fall into the luminotron from the second feed opening under pressure, then starting the lifting mechanism, and driving the movable plate to move downwards by the lifting mechanism so that the movable plate moves downwards to the top part which is lower than the bottom end of the light-emitting tube;
step three:
after the feeding is finished, a user opens the second electric push rod, the second electric push rod works to enable the baffle to move and enable the baffle to shield the light emitting tube, so that the mixed liquid in the light emitting tube can be prevented from splashing, and then the motor is started to rotate in a reciprocating manner to enable the light emitting tube to shake and enable the interior to be fully mixed; the driving mechanism continuously pushes the light-emitting tube to move rightwards, when the light-emitting tube reaches the side part of the detection mechanism, the clamping mechanism pushes the light-emitting tube in, the cover of the light-emitting tube can rotate due to the blocking of the baffle plate, the cover is closed due to the limitation of the feeding hole along with the entering of the light-emitting tube, the light barrier is opened and sent into the detection box body for detection, and the bacterial pollution degree in food is measured by utilizing a microbial ATP bioluminescence method;
step four:
the user takes out the luminotron after the detection is finished, then pours out the mixed liquid in the luminotron, cleans the luminotron, and the user again clamps the luminotron through the clamping mechanism after the cleaning is finished so as to detect the next sample.
2. The seafood frozen food safety detection method according to claim 1, characterized in that: in the first step, the sampling mechanism comprises a liquid collecting bottle, a fixing ring, an electromagnetic valve and a first discharging pipe, and the first discharging pipe is provided with a plurality of parts.
3. The seafood frozen food safety detection method according to claim 1, characterized in that: in the first step, the number of the first discharging pipes is the same as that of the light emitting tubes, and the first discharging pipes are located right above the light emitting tubes.
4. The seafood frozen food safety detection method according to claim 1, characterized in that: in the first step, the diameter of the splash guard is larger than the diameters of the splash guard barrel and the light emitting tube, and the splash guard barrel is located on the outer surfaces of the first discharging tube and the second discharging tube.
5. The seafood frozen food safety detection method according to claim 1, characterized in that: in the second step, the number of the pistons is the same as that of the assembly holes, and the pistons are matched with the assembly holes.
6. The seafood frozen food safety detection method according to claim 1, characterized in that: in the second step, the driving mechanism comprises two driving motors, a screw rod, a threaded sleeve, a sliding block and a sliding groove, the clamping mechanism comprises a fixing plate, a first electric push rod, a clamping plate, a rotating shaft and anti-skidding teeth, the threaded sleeve is connected with one side of the fixing plate, and the first electric push rod is installed at the top of the fixing plate.
7. The seafood frozen food safety detection method according to claim 1, characterized in that: in the third step, the diameter of the baffle is larger than that of the luminotron, and the baffle is made of stainless steel material.
8. The seafood frozen food safety detection method according to claim 1, characterized in that: in the second step, the lifting mechanism comprises a cylinder and a piston rod, and a cushion pad is installed on one side of the movable plate.
9. The seafood frozen food safety detection method according to claim 1, characterized in that: in the third step, the time for detecting the mixed liquid in the luminescent tube is 5-10 min.
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| CN202110139312.0A CN112858267B (en) | 2021-02-01 | 2021-02-01 | Seafood frozen food safety detection method |
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| CN202110139312.0A CN112858267B (en) | 2021-02-01 | 2021-02-01 | Seafood frozen food safety detection method |
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| CN112858267B CN112858267B (en) | 2023-10-17 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5416002A (en) * | 1992-12-03 | 1995-05-16 | United Technologies Corporation | Near-real-time microbial monitor |
| CN108318466A (en) * | 2018-04-11 | 2018-07-24 | 樊雪花 | A kind of food safety detection method |
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2021
- 2021-02-01 CN CN202110139312.0A patent/CN112858267B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5416002A (en) * | 1992-12-03 | 1995-05-16 | United Technologies Corporation | Near-real-time microbial monitor |
| CN108318466A (en) * | 2018-04-11 | 2018-07-24 | 樊雪花 | A kind of food safety detection method |
Non-Patent Citations (1)
| Title |
|---|
| 张菊梅;吴清平;李程思;吴慧清;: "生物发光法微生物快速检测试剂的性质及其影响因素研究", 微生物学通报, no. 03 * |
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| CN112858267B (en) | 2023-10-17 |
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