144 results about "Agaricus bisporus" patented technology

The invention relates to the technical field of intelligent agricultural equipment, and discloses an automatic agaricus bisporus picking method, device and equipment based on artificial intelligence and a medium. The method comprises the steps that RGB images and three-dimensional point cloud data of the agaricus bisporus growth environment are collected in real time through a binocular vision camera and a depth sensor which are installed at the tail end of a picking robot, and environment illumination parameters and cultivation bed coordinate information are obtained; inputting the RGB image into a pre-trained lightweight convolutional neural network, identifying a pileus contour, a stipe position and a maturity level of the agaricus bisporus, calculating a space coordinate, a height and a growth inclination angle of the agaricus bisporus based on the three-dimensional point cloud data, and constructing an agaricus bisporus target database; a mechanical arm picking path is generated based on the agaricus bisporus target database, and path weight parameters are optimized online through a preset reinforcement learning model; according to the maturity grade and morphological characteristics of the agaricus bisporus, the clamping force and the rotating angle of the end effector are dynamically adjusted, and automatic picking of the agaricus bisporus is completed.

The invention provides a fat-reducing composition based on an agaricus bisporus extract as well as a preparation method and application of the fat-reducing composition, and belongs to the technical field of nutrition and health care. The fat-reducing composition comprises the following raw materials in parts by weight: 10-30 parts of an agaricus bisporus extract, 5-15 parts of a green tea extract, 5-15 parts of bitter gourd peptide, 3-10 parts of seaweed meal and 10-30 parts of resistant dextrin. The agaricus bisporus extract disclosed by the invention can regulate intestinal flora and promote fat metabolism; tea polyphenol in the green tea extract can inhibit fat synthesis and promote fat oxidation; momordica charantia peptide has an obvious hypoglycemic effect; the seaweed meal (containing fucoxanthin) has the effects of burning fat cells and eliminating fat accumulation; the resistant dextrin is used as dietary fiber, so that satiety is increased, and caloric intake is reduced. The raw materials cooperate with each other, so that the composition has better fat-reducing and weight-reducing effects, and the total cholesterol and triglyceride levels are reduced.

The invention relates to a transporting device capable of being used for transporting mushroom charging baskets, and solves the technical problems that when an existing agaricus bisporus collecting device is used for collecting picked agaricus bisporus, manpower is consumed, efficiency is low, and the collecting quantity is small. First walking bottom wheels are connected to the bottom of the first frame, the first walking bottom wheels and the first guide rails roll in a matched mode, a first walking motor used for driving the first walking bottom wheels to rotate is connected to the first frame, a sliding contact line is arranged on the outer side of the first guide rails, and a carbon brush and a first displacement assembly driving the carbon brush to make electrical contact with the sliding contact line are arranged on the first frame. The mushroom collecting efficiency and the automation level are improved, and the higher intelligent operation requirement is met.

The invention discloses a composition for regulating body weight through satiety-sugar control double channels. The composition is prepared from the following components in parts by weight: 5-25 parts of cinnamon extract, 1-20 parts of ganoderma lucidum EGCG composite powder, 10-40 parts of L-arabinose, 5-40 parts of composite fruit and vegetable fiber powder, 5-25 parts of fructus cannabis protein peptide, 1-20 parts of apple polyphenol, 1-20 parts of white kidney bean dietary fiber powder and 1-20 parts of agaricus bisporus powder. The composition is characterized in that digestion and absorption of carbohydrate are inhibited, the swelling ratio larger than or equal to 35 times is achieved through a composite fiber system, gastric emptying is remarkably prolonged, satiety hormones such as GLP-1 are adjusted, and the composition can be used as a non-alternative weight management product and is good in safety.

The invention provides an agaricus bisporus compost, a preparation method thereof and an agaricus bisporus cultivation method, and belongs to the technical field of edible fungus cultivation. The agaricus bisporus culture material comprises the following components in parts by mass: 33-40 parts of mulberry twig sawdust, 33-40 parts of mushroom dregs, 20-26 parts of dry cow dung, 1-2 parts of quick lime, 1-2 parts of gypsum and 1-2 parts of calcium superphosphate. According to the agaricus bisporus culture material, the mulberry twig wood chips, the mushroom residues and the dry cow dung serve as main raw materials, the agaricus bisporus culture material can be used for cultivation and production of different varieties of agaricus bisporus, the mushroom forming rate reaches 95% or above, the yield is 19.37 kg / m < 2 >, the protein content of sporocarp is 26.4 g / 100 g, the total sugar content is 23.5 g / 100 g, and the fat content is 0.5 g / 100 g. The method realizes resource reutilization of agricultural wastes, reduces the production cost of edible mushrooms, and improves economic benefits.

The invention relates to a mushroom harvesting control method which solves the technical problems that an automatic layer changing device is arranged on each multi-layer bed frame of an existing agaricus bisporus picking system, the factory space is occupied, the layer changing efficiency is low, and the overall harvesting efficiency is affected. Secondly, the automatic picking robot in the robot storage rack moves into the robot transfer rack, then the transfer forklift integrally runs to the multi-layer bed frame, and then the automatic picking robot moves into a certain layer of the multi-layer bed frame. According to the invention, the operation and use convenience of the system is improved, and the operation efficiency is further improved.

The invention provides a VLA-based agaricus bisporus autonomous picking method and system, and relates to the technical field of cultivation, and the method comprises the steps: obtaining picking task description information and visual observation data, and coding the visual observation data to obtain a visual feature sequence; constructing a multi-scale visual feature map based on the visual feature sequence, and generating an object-level visual mark sequence; encoding the picking task description information into a text marking sequence, mapping the text marking sequence and the object-level visual marking sequence to a unified semantic space, and splicing the text marking sequence and the object-level visual marking sequence to form a joint semantic sequence; and inputting the joint semantic sequence into a pre-trained VLA model, performing autoregression prediction to generate an action mark sequence, decoding according to the action mark sequence to obtain a picking control instruction, and driving a picking device to complete picking, so as to improve the key visual information extraction capability and enhance the accuracy and robustness of action generation in a complex unstructured cultivation scene.

The invention relates to a control method for assisting mushroom collection, and solves the technical problem of how to improve the harvesting efficiency of an existing automatic agaricus bisporus picking system.The main process includes the steps that firstly, an external power source powers on a sliding contact line, and secondly, a first displacement mechanism drives a carbon brush to make contact with the sliding contact line to supply power to an automatic collection device; and then the automatic collecting device collects the mushrooms output by the automatic picking robot into a charging basket, then the charging basket is transferred to a second frame of a second transport vehicle body, and finally the second frame moves to the tail end of a second track. The operation efficiency is further improved, and the higher intelligent operation requirement is met.

The invention relates to the technical field of edible mushroom planting, and discloses a culture method of agaricus bisporus. The culture method comprises the following steps: 1) a composting stage: inoculating an agaricus bisporus strain on a culture material for composting fermentation; 2) a soil covering stage: forming a soil covering layer by soil covering, performing first-time water supplementing and mycelium stimulation, and performing second-time water supplementing and complex mycelium culture; and 3) a cooling stage: promoting fruiting by controlling an air temperature reduction program and a CO2 concentration reduction program. By controlling the air temperature and the CO2 concentration reduction program in the fruiting management stage, large mushrooms and small mushrooms appear at the same time, are well-proportioned in height and grow in a layered mode, sufficient growth space is provided for growth of agaricus bisporus, artificial bud thinning treatment is not needed in the later period, the labor cost is reduced, and the agaricus bisporus yield is improved. Meanwhile, the yield of the agaricus bisporus is improved.

The invention relates to an automatic collection system for mushrooms, and solves the technical problems that when an existing agaricus bisporus collection device is used for collecting picked agaricus bisporus, manpower is consumed, efficiency is low, and the collection number is small. The charging basket putting device, the charging basket conveying device and the material receiving and feeding device are located on the first conveying vehicle body, and the second conveying vehicle body is used for receiving charging baskets output by the charging basket conveying device and directionally transferring the charging baskets. The charging basket putting device comprises a front frame, a first lifting mechanism, a first lifting plate, an inner frame and an opposite clamping mechanism, and the front frame is fixed to the first transport vehicle body. The mushroom collecting efficiency and the automation level are improved, mushrooms and mushroom roots can be synchronously collected, and the higher intelligent operation requirement is met.

The invention relates to a mushroom harvesting robot system which solves the technical problems that when an existing agaricus bisporus automatic picking robot and a related collecting device are used for collecting picked agaricus bisporus, manpower is consumed, efficiency is low, and the collecting number is small. The automatic collecting device comprises a first transporting vehicle body synchronously advancing with the automatic picking robot, a charging basket putting device, a charging basket conveying device, a material receiving and feeding device and a second transporting vehicle body; the charging basket putting device, the charging basket conveying device and the material receiving and feeding device are located on the first transporting vehicle body; the second transporting vehicle body is used for receiving charging baskets output by the charging basket conveying device and directionally transferring the charging baskets; the operation efficiency is further improved, and the higher intelligent operation requirement is met.

The utility model relates to an end executive device capable of being used for picking mushrooms. The end executive device solves the technical problem of how to more effectively and reliably pick agaricus bisporus growing in an inclined mode. The device comprises an upper supporting plate, a lower supporting plate, a flexible pipe, an upper hollow shaft, a lower rigid air pipe, a spherical joint bearing and a self-adaptive suction cup, the upper supporting plate is connected with the lower supporting plate through a fixing column, the upper hollow shaft is fixedly connected with the upper supporting plate and penetrates through the upper supporting plate, the upper end of the flexible pipe is connected with the lower end of the upper hollow shaft, and the lower end of the flexible pipe is connected with the lower rigid air pipe. The lower end of the flexible pipe is connected with the upper end of the lower rigid air pipe; the spherical joint bearing is connected with the lower supporting plate, the spherical joint bearing is provided with an inner ring, the lower rigid air pipe is connected with the inner ring of the spherical joint bearing, and the lower rigid air pipe penetrates through the spherical joint bearing; the self-adaptive suction cup is connected with the lower end of the lower rigid air pipe. The mushroom picking machine is widely used for picking mushrooms such as agaricus bisporus.

The invention relates to an automatic collection device for mushrooms, and solves the technical problems that when an existing automatic collection device for agaricus bisporus is used for collecting picked agaricus bisporus, manpower is consumed, efficiency is low, and the collection quantity is small. The automatic collection device for agaricus bisporus comprises a main frame, a belt frame body and a mushroom containing box, and the belt frame body is fixedly connected to the main frame; the lower end of the belt frame body extends into the space of the main frame, the lower end of the belt frame body is connected with a driving belt wheel, the upper end of the belt frame body is connected with a driven belt wheel, a circulation motor used for driving the driving belt wheel to rotate is fixed to the main frame, and the driving belt wheel and the driven belt wheel are connected in a matched mode through a circulation synchronous belt; according to the mushroom collecting device, automatic operation of mushroom collecting is achieved, the automation level of the mushroom collecting device is higher than that of the prior art, the operation efficiency is further improved, mushrooms and mushroom roots can be synchronously collected, and the higher intelligent operation requirement is met.

This invention discloses an improved PMA culture medium for Agaricus bisporus mother culture and its application, belonging to the field of edible fungi cultivation technology. The culture medium of this invention comprises PMA medium, Agaricus bisporus substrate residue, and peptone or beef extract. Experiments show that adding Agaricus bisporus substrate residue to the PMA medium significantly promotes mycelial growth. Further addition of a specific amount of peptone or beef extract produces a synergistic effect, increasing the mycelial growth rate to over 6.53 mm / day, and shortening the mother culture cycle from the traditional 23-25 ​​days to approximately 13-15 days. This invention improves the efficiency of spawn production, reduces production costs and pollution risks, and realizes the resource utilization of substrate residue.

New and unique brown varieties of the mushroom Agaricus bisporus Imbach were produced by crossing the progeny of brown mushrooms and off-white hybrid mushrooms to bridging cross strains. The resultant hybrids, named 'RO10425', 'RO14176', and'RO12756', exhibit distinct and stable characteristics. Hybrid 'RO10425' exhibits a lighter cap color, thicker cap flesh, and rounder cap, especially when compared to available brown mushroom varieties. 'RO 10425' also exhibits fast mushroom development and high yield. Hybrid 'RO14176' exhibits a light cap color, thicker cap flesh, rounder cap, faster mushroom development, and higher yield, especially when compared to available brown mushroom varieties. Hybrid 'RO12756' exhibits a light cap color, thicker cap flesh, rounder cap, faster mushroom development, and high yield, especially when compared to available brown mushroom varieties.

The application discloses a method for planting agaricus bisporus by using amomum tsao-ko stalks, and belongs to the technical field of edible mushroom planting. The amomum tsao-ko stalks, corn cobs, wild rice shoots and beer dregs which are soaked in a suspension liquid extracted from the amomum tsao-ko stalks and then fermented are used as planting substrates. After the agaricus bisporus mycelium grows on the planting substrates and covers the mushroom soil, trehalose and bamboo joint ginseng extract solution are sprayed, so that the agaricus bisporus mycelium germination can be effectively promoted, the mushroom speed can be improved, and the agaricus bisporus fruiting body yield and the agaricus bisporus cap diameter can be increased.

This invention discloses a water mold inhibitor, its preparation method, and its application. The water mold inhibitor comprises Agaricus bisporus polysaccharide, *Epicoccumnigrum* Z01, *Lactobacillus paracasei* LY02, and ergothioneine. The preservation number of *Epicoccumnigrum* Z01 is CCTCC NO: M2024967. The concentration of Agaricus bisporus polysaccharide in the water mold inhibitor is 100-500 mg / L, and the spore concentration of *Epicoccumnigrum* Z01 is 1.0-8.0 × 10⁻⁶ mg / L. 8 / mL. The concentration of Lactobacillus paracasei LY02 in the water mold inhibitor is 1.0-5.0 × 10⁻⁶. 9 CFU / mL. The concentration of ergothioneine in the water mold inhibitor is 300-500 μmol / L. This invention can effectively inhibit water mold infection in aquatic animals.

The invention discloses a method for improving salty taste and antioxidant activity of agaricus bisporus taste-active peptide. The method comprises the following steps: S1, pretreatment: cleaning, slicing, drying and crushing fresh agaricus bisporus to obtain agaricus bisporus powder; s2, first-step enzymolysis: uniformly mixing the agaricus bisporus powder with water, adding neutral protease for enzymolysis, and synchronously performing ultrasonic treatment in the enzymolysis process; s3, enzyme deactivation treatment; s4, second-step enzymolysis: adding flavourzyme for enzymolysis, and synchronously performing ultrasonic treatment in the enzymolysis process; s5, performing enzyme deactivation treatment; s6, separating and refining to remove substances insoluble in water; s7, concentrating; and S8, drying and crushing to obtain the flavor peptide powder. According to the method, two-step enzymolysis is performed, and synchronous ultrasound is introduced in the two-step enzymolysis process, so that the saltiness increasing capacity of the agaricus bisporus flavor peptide is improved, and the oxidation activity is improved.

The invention belongs to the technical field of edible mushroom biological breeding, and particularly discloses a Stropharia rugoso-annulata breeding method based on Tricholoma giganteum and Stropharia rugoso-annulata protoplast fusion, which comprises the following steps: respectively preparing Stropharia rugoso-annulata protoplast and Tricholoma giganteum protoplast; performing thermal inactivation on the stropharia rugoso-annulata protoplast, and performing ultraviolet inactivation on the tricholoma giganteum protoplast; mixing the two inactivated protoplasts, and adding an induction reagent for protoplast fusion; coating the fusion product on a regeneration culture medium for culturing to obtain a fusion strain; screening a target fusion strain through an antagonism test and a molecular marker technology; fruiting management is carried out, and a new high-temperature-resistant stropharia rugoso-annulata strain is screened out. By optimizing protoplast preparation and PEG fusion promotion conditions, the distant fusion efficiency is remarkably improved, and a novel stropharia rugoso-annulata strain which can normally fruit at the high temperature of 30 DEG C and is excellent in agronomic character and good in flavor is successfully obtained in combination with an efficient screening and identification system.

The application provides an autonomous picking method and system for Agaricus bisporus based on VLA, and relates to the technical field of cultivation. The method comprises the following steps: acquiring picking task description information and visual observation data, encoding the visual observation data to obtain a visual feature sequence; constructing a multi-scale visual feature map based on the visual feature sequence, and generating an object-level visual label sequence; encoding the picking task description information into a text label sequence, mapping the object-level visual label sequence to a unified semantic space, and splicing to form a joint semantic sequence; inputting the joint semantic sequence into a pre-trained VLA model, and generating an action label sequence through autoregressive prediction; decoding the action label sequence to obtain picking control instructions, and driving a picking device to complete picking, so as to improve the key visual information extraction capability in a complex and unstructured cultivation scene, and enhance the accuracy and robustness of action generation.

The utility model relates to the technical field of auricularia auricula planting, in particular to an auricularia auricula planting and cultivating device which comprises a cultivating table, a spraying mechanism is fixedly arranged above the cultivating table, and a placing mechanism is movably arranged above the cultivating table. When the auricularia auricula planting and cultivating device is used, a plurality of auricularia auricula bags can be arranged and placed in the cultivating grooves through the cultivating grooves in the two sides of the placing table on the upper portion, and flowerpots for technological appreciation or auricularia auricula bags for appreciation can be placed in the placing grooves in the placing table. After a plurality of agaric fungus bags are placed, daily cultivation operation can be carried out, the connecting pipe on the right side of the supporting pipe passes through the connecting flange at one end to be connected with an external water pipe, a water flow control switch valve and the like, and water flow can be conveyed in the supporting pipe regularly in daily life; and the water flow is sprayed to the lower fungus bags in a mist form through the main water pipe on one side, the branch pipes mounted above the cultivation tanks on the two sides and the spraying heads below the main water pipe and the branch pipes.

The invention discloses an automatic pesticide application device for an industrialized mushroom house of agaricus bisporus. The automatic pesticide application device comprises a pesticide preparation pool, a pressure compensation pump, a liquid conveying pipeline, an atomizing nozzle and the mushroom house, a ventilation system is arranged in the mushroom house; the atomization nozzle is arranged in the ventilation system; and the atomizing nozzle is communicated with the dispensing tank through a liquid conveying pipeline and a pressure compensation pump. Through cooperation of the medicine dispensing pool, the pressure compensation pump, the liquid conveying pipeline, the atomization nozzles and other components, a complete ventilation system of the agaricus bisporus factory mushroom house is utilized, and liquid medicine can be automatically and evenly sprayed to each area of the mushroom house, so that the medicine applying efficiency and the medicine spraying uniformity can be improved, and the labor intensity of workers is reduced. The pesticide application device is simple in structure and convenient to use, harm to the health of people can be avoided, the pesticide dosage can be accurately controlled, the disease and pest prevention and control effect can be improved, and meanwhile the interior of the mushroom house can be evenly humidified through the pesticide application device.

The invention relates to a charging basket putting and conveying device which solves the technical problems that an existing collecting device for automatically collecting agaricus bisporus is low in efficiency and small in collecting quantity and comprises a charging basket putting device and a charging basket conveying device. The charging basket feeding device comprises a front frame, a first lifting mechanism, a first lifting plate, an inner frame and an opposite clamping mechanism, the first lifting mechanism is connected with the front frame, the first lifting plate is connected with the first lifting mechanism, and the inner frame is connected with the first lifting plate; the charging basket conveying device comprises a main frame, a first transverse conveying mechanism and a second transverse conveying mechanism, the first transverse conveying mechanism is connected with the front frame, and the second transverse conveying mechanism is connected with the main frame. The mushroom collecting efficiency and the automation level are improved, and the higher intelligent operation requirement is met.

The application discloses a xylanase mutant with simultaneously improved thermal stability and pH tolerance and application thereof, and belongs to the field of genetic engineering and protein engineering. The xylanase AbXyL10A from Agaricus bisporus var burnettii is used as a parent to obtain two xylanase mutants T234N and R268L after mutation of two amino acid sites Thr234 and Arg268. Compared with the wild-type xylanase, the thermal stability and pH tolerance of the two xylanase mutants are obviously improved. In terms of specific activity, when beech xylan is used as a substrate, the specific activity of the two xylanase mutants is obviously improved compared with the wild-type xylanase. The application provides a theoretical reference for improvement of xylanase, and the obtained xylanase mutant with simultaneously improved thermal stability and pH tolerance has great application prospect in animal feed and biomass degradation sugar.

The invention discloses a multifunctional air cooler special for agaricus bisporus, and belongs to the field of air coolers. A multifunctional air cooler special for agaricus bisporus comprises an air feeder and a frame arranged at the air outlet end of the air feeder. A mounting cavity is formed in the middle of the frame; partition channels are evenly arranged in the frame and located on the two sides of the installation cavity. An air valve for changing the ventilation area of each partition channel is rotationally connected into each partition channel; opening and closing frames for driving the air valves to move are slidably connected to the positions, corresponding to the air valves, in the mounting cavity. A driving unit for driving each air valve to move is arranged in the mounting cavity; a screw rod is rotationally connected into the mounting cavity; the driving unit comprises a switching sleeve which is in transmission connection with the screw rod; the switching sleeve is provided with driving levers which are distributed along the radial direction; according to the scheme, a plurality of subarea channels are arranged and communicated with all the areas in the mushroom house, and airflow is provided for all the areas in the mushroom house.

This invention discloses a method for identifying primordia of Agaricus bisporus in industrialized cultivation, relating to the field of industrialized edible fungi cultivation technology. By continuously acquiring images of the culture bed surface and establishing a unified micro-region division system, the same spatial location forms a corresponding continuous data structure at different times. This transforms the originally scattered image information into traceable micro-region temporal data, providing a stable data foundation for subsequent identification. This addresses the problem in existing methods where inconsistent image positions or lack of continuous correspondence hinders evolutionary analysis. By introducing position alignment processing in the image preprocessing stage, images at different times are unified to the same spatial reference system, avoiding positional errors caused by slight camera offsets or changes in acquisition angle. This ensures the consistency of data for the same micro-region in the temporal dimension, allowing grayscale changes to accurately reflect changes in the culture bed surface structure.

The present invention relates to a rope-driven manipulator with finger joints, which solves the technical problems of existing clamping manipulators for picking Agaricus bisporus, such as the tendency of the clamping action to damage the target Agaricus bisporus, the tendency of the manipulator to damage other Agaricus bisporus around the target Agaricus bisporus when picking dense and overlapping Agaricus bisporus groups, the difficulty in completing the picking action on the obstructed target Agaricus bisporus, and the poor flexibility. The manipulator comprises a top support plate, a bottom support plate, a steering gear, a drive disc, a drive line, an articulated seat, a pulley seat, a pulley, a rear connecting mechanism, a front connecting mechanism, a blocking head and at least two fingers, wherein the drive disc is connected to the output shaft of the steering gear, the articulated seat is fixedly connected to the bottom support plate, the fingers are connected to the articulated seat, the pulley seat is fixedly connected to the bottom support plate, the pulley is connected to the pulley seat, and the fingers include proximal knuckles and distal knuckles. The present invention is widely used in picking Agaricus bisporus and other mushrooms, and in particular, in the scene of picking dense clusters of Agaricus bisporus, it can achieve the effect of using a single finger to push away the obstructed Agaricus bisporus and using two fingers to pick the target Agaricus bisporus.

The present invention discloses a method for visual segmentation and recognition of Agaricus bisporus, including collecting images of Agaricus bisporus and preprocessing the images of Agaricus bisporus to obtain a mushroom foreground image; performing a marking process on the mushroom foreground image to produce a watershed marking image; using the watershed marking image as a seed growth point to divide similar regions in the watershed marking image to complete the segmentation of Agaricus bisporus; extracting the contours of the divided regions and obtaining the center and diameter of a single Agaricus bisporus monomer through the minimum circumscribed rectangle algorithm to complete the recognition of Agaricus bisporus; the present invention accurately filters out complex backgrounds by designing a tunable filter, and combines the watershed transformation algorithm and an edge detection template to achieve precise segmentation and recognition of Agaricus bisporus.

The invention discloses a method for preparing agaricus bisporus powder rich in vitamins, which comprises the following steps: step 1, selecting fresh agaricus bisporus which is free from mechanical injury and plant diseases and insect pests and has complete sporocarp, cleaning, and soaking in a color protection solution for color protection; 2, slicing the agaricus bisporus subjected to color protection treatment, and freeze-drying the sliced agaricus bisporus to obtain a dry agaricus bisporus product; and step 3, irradiating the agaricus bisporus dry product under the UV-B wave band with the wavelength of 280-320 nm, so that ergosterol in the agaricus bisporus dry product is converted into vitamins, and the agaricus bisporus powder rich in the vitamins is obtained. According to the invention, color-protecting fresh-keeping pretreatment is combined with a freeze-drying technology, so that nutritional active ingredients and flavor substances of agaricus bisporus can be reserved to the maximum extent, and the content of vitamin D2 is remarkably increased; compared with UVA and UVC, UVB can significantly improve the content of vitamin D2, the whole process is completed by single UV radiation, the preparation process does not need a UV light source switching step, and the energy consumption is low.