1213 results about "Walnut Nut" patented technology

The invention discloses a walnut meal-derived antibacterial polypeptide and application thereof, and belongs to the technical field of biology. The amino acid sequence of the walnut meal-derived antibacterial polypeptide disclosed by the invention is shown as any one of SEQ ID NO.1-3. The walnut meal is adopted as the raw material, the antibacterial polypeptide is extracted and separated, the utilization rate of the walnut meal can be effectively increased, resource waste is reduced, a new polypeptide variety is provided for the antibacterial polypeptide field, and new resources are provided for development of novel antibacterial agents, bacterial lysis solutions, food preservatives and anti-infection drugs.

The invention discloses a walnut vegetarian meat product continuous mixing, forming and curing integrated device which comprises a base, a rotating stand, a supporting cylinder, a stirring mechanism and a sealing mechanism, the rotating stand is fixedly arranged on the base, the supporting cylinder is rotationally arranged on the rotating stand, the stirring mechanism is rotationally arranged in the supporting cylinder, and the sealing mechanism is arranged on the rotating stand. A sealing mechanism is fixedly arranged at the output end of the supporting cylinder, a scraping plate is arranged at the input end of the supporting cylinder in a sliding mode through hydraulic drive, the stirring mechanism comprises a rotating cylinder, an inner cylinder, a first stirring block and a second stirring block, the rotating cylinder is rotationally arranged in the supporting cylinder, the inner cylinder is fixedly arranged in the rotating cylinder, and the first stirring block and the second stirring block are arranged in the supporting cylinder. A stirring cavity is formed in the inner cylinder, a driving cavity is formed between the inner cylinder and the rotating cylinder, a plurality of first deflection grooves are formed in the middle of the inner cylinder, a plurality of second deflection grooves are formed in the two ends of the inner cylinder, first stirring blocks are rotationally arranged in the first deflection grooves in a sealed mode, and second stirring blocks are rotationally arranged in the second deflection grooves in a sealed mode.

The invention relates to the field of nondestructive testing and automatic sorting of agricultural products, and discloses an X-ray-based walnut internal defect feature optimization detection method and device, and the method comprises the steps: collecting an X-ray image of a moving walnut, extracting a region of interest (ROI) through preprocessing, extracting and fusing spatial domain and frequency domain texture features to form a multi-dimensional feature set, and obtaining a feature set; an optimal feature combination is screened out through dimensionality reduction; and finally, the types of the internal defects of the walnuts are identified by a pre-trained classifier, and a result is output. The device comprises a feeding mechanism, a conveying mechanism, an X-ray detection mechanism, a sorting execution mechanism and a processing and control system electrically connected with all the mechanisms. The problems of single identification category and insufficient model stability and precision are solved, and high-throughput and automatic lossless sorting of walnuts is realized.

The invention provides a management method for promoting cutting rooting of acanthopanax senticosus, and relates to the technical field of artificial breeding of acanthopanax senticosus. The management method mainly comprises the steps that a soaking solution prepared from indoleacetic acid, pyroligneous liquor and walnut green seedcase extract and a disinfectant prepared from quick lime and cooked rice milk are arranged to treat cutting branches, and river sand, a walnut green seedcase treatment material, perlite and organic fertilizer are arranged as cutting media to conduct cutting treatment on the acanthopanax senticosus. According to the method, the defects in the prior art are overcome, the survival rate of acanthopanax branch cuttage is effectively increased, cuttage rooting of acanthopanax is further promoted, the growth efficiency of cuttage seedling raising is improved, and later transplanting and planting are facilitated.

The walnut seedling cultivation device comprises a seedling table, and vertical supporting plates are fixedly arranged at the four corners of the bottom of the seedling table respectively; a plurality of bases are evenly and fixedly arranged on the upper portion of the seedling growing table at intervals, a water passing groove is formed in each base, and each water passing groove is communicated with a water storage tank arranged outside the seedling growing table. A plurality of seedling raising holes communicated with the water passing groove are uniformly formed in the upper surface of each base at intervals; the upper portion of each base is provided with a seedling raising plate, and two handles are symmetrically and fixedly arranged at the two ends of the upper portion of each seedling raising plate. A plurality of inserting holes which are in one-to-one correspondence with the plurality of seedling raising holes in the base are uniformly formed in the seedling raising tray at intervals. According to the walnut seedling raising device, it can be guaranteed that roots effectively absorb water in the walnut seedling raising process, seedlings with soil can be easily separated from the seedling raising cylinder when walnut seedlings are transplanted, time and labor are saved during operation, and the roots of the walnut seedlings cannot be damaged.

The invention discloses bird's nest composite honey suitable for women. The bird's nest composite honey is prepared from the following raw materials in parts by weight: 1-10 parts of bird's nests, 1-10 parts of ginseng, 1-10 parts of donkey-hide gelatin, 1-10 parts of lucid ganoderma, 1-10 parts of walnuts, 5-50 parts of rhizoma polygonati, 5-50 parts of fingered citron, 5-50 parts of dried orange peel, 5-50 parts of dried ginger, 5-50 parts of raw malt and 700-970 parts of refined brown sugar. The cubilose composite honey suitable for women is prepared by taking refined brown sugar as a main raw material and combining more than ten precious traditional Chinese medicinal materials such as cubilose, ginseng, donkey-hide gelatin, lucid ganoderma, walnuts, rhizoma polygonati, fingered citron, dried tangerine or orange peel, dried ginger and raw malt, has the characteristics of being good in taste, quick to dissolve, easy to absorb, pure in color and luster, sweet and lingering, simple and convenient to brew one cup of one piece of sugar; the traditional Chinese medicine composition is suitable for women with yellow, dark and blood-free faces and less menstruation, can maintain beauty, keep young and improve menstruation, and has an obvious menstruation continuing effect on menopausal groups.

The invention discloses a walnut skin powder micro-nano polishing system for an inner hole of a high borosilicate microsyringe, and relates to the technical field of polishing of inner holes of syringes. The device comprises a powder containing barrel, a spline pipe column-plugging disc multi-through-hole positioning assembly, a polishing rod synchronous rotating driving mechanism and an automatic feeding-discharging mechanism. By means of swing driving disc indexing feeding, vibration-centrifugal composite polishing, plugging column sealing and connecting rod-rack transmission discharging, one-time efficient, low-damage and environment-friendly polishing of the inner walls of the multiple injectors is achieved, the surface consistency, the machining takt and the powder recoverability are remarkably improved, and the device is suitable for batch precision manufacturing of disposable medical instruments.

The walnut processing and conveying equipment with the steering mechanism comprises a conveying table, a conveying steering belt, a containing box and a processing assembly, the conveying steering belt is movably installed on the inner side of the conveying table, the containing box is placed above the conveying steering belt, the processing assembly is fixedly installed above one side of the conveying table, and the processing assembly is fixedly installed above the other side of the conveying table. A conveying steering belt is arranged to drive an upper placing box to move, and different processing treatments are carried out when the conveying steering belt moves to the position below the processing assembly; according to the walnut processing equipment, automatic or semi-automatic production can be achieved, the processing efficiency is remarkably improved, the labor cost is reduced, multi-stage processing treatment is conducted on walnuts in the transportation process, parameters such as the temperature and time in the processing process are accurately controlled through arrangement of the temperature controller, and the walnut processing equipment can guarantee the quality and consistency of products; the efficient processing equipment can reduce damage and loss of walnuts in the processing process, and the utilization rate of raw materials is increased.

The utility model relates to the technical field of walnut processing, and discloses a walnut ultrasonic shell breaking and kernel taking device which comprises a rack, and a walnut conveying mechanism, a walnut shell breaking mechanism and a material collecting mechanism which are arranged on the rack, the walnut conveying mechanism is used for driving the falling walnuts to move and conveying the walnuts to the walnut shell breaking mechanism; the walnut shell breaking mechanism drives walnuts to move and extrudes and breaks shells of the walnuts through ultrasonic high-frequency vibration; and the material collecting mechanism is used for screening and collecting the walnut kernels and the walnut shells after shell breaking. Through the walnut conveying mechanism, the walnut shell breaking mechanism and the material collecting mechanism, the process of walnut conveying, extrusion shell breaking and recovery is achieved, ultrasonic waves are applied to the field of walnut shell breaking, Yunnan walnuts are hard in shell and small in shell-kernel gap, the characteristics that high-frequency vibration under the mechanical effect of the ultrasonic waves is suitable for breaking of hard and brittle materials are utilized, walnut shell breaking is assisted, and the walnut shell breaking efficiency is improved. The shell breaking rate and the whole kernel rate are improved.

The utility model relates to a green husk removing device for walnuts. The green husk removing device comprises a feeding machine, a green husk removing machine connected with the feeding machine, a vibrating conveyor connected with the green husk removing machine, and a conveyor connected with the vibrating conveyor, the green peel removing machine comprises a rack, a peeling roller arranged on the rack, a plurality of peeling bent knives arranged below the peeling roller, and a guide rail, wherein one end of the guide rail is connected with the peeling bent knives, and the other end of the guide rail is connected with the feeding machine. And the number of the guide rails is the same as that of the peeling curved knives. Walnuts with green husks are conveyed to a green husk removing machine one by one through a feeding machine, the walnuts pass through a gap between a husking roller and a husking bent knife, a first circular fluted disc and a second circular fluted disc to drive the walnuts to rotate and advance slowly, a three-jaw husking disc rotates rapidly, the green husks are dug out layer by layer through digging hooks on husking claws, and green husk removing is completed. Compared with an existing common method, the device can effectively improve the efficiency.

The invention discloses a self-adaptive wrapping profiling extrusion deep-grain walnut shell breaking machine which comprises a shell, a feeding hopper, a rack, a positioning conveying device, a shell breaking device, a power device, a locking device, a material collecting groove and a discharging hopper. The rack comprises a pair of L-shaped supports and a frame installed between the L-shaped supports, and the sheet metal parts are fixed to the periphery of the frame to form a shell. The whole machine is compact in structure and small in occupied space, the quantity of walnuts fed into the positioning conveying device can be adjusted during shell breaking processing, matching of the feeding quantity and the output quantity is achieved, and the working efficiency of the machine is improved; the self-adaptive clamp can adapt to different types of walnuts with different appearance characteristics, so that self-adaptive profiling wrapping in a real sense is realized; the contour cam is matched with the self-adaptive clamp to work, the self-adaptive clamp can quickly complete or release self-locking according to the extrusion requirement, and the requirement for high-speed operation of a machine is met.

The invention discloses a VIGS silencing system of walnut JrPDS gene as well as a construction method and application of the VIGS silencing system, and relates to the technical field of biology. The walnut JrPDS gene interference fragment as shown in SEQ ID NO.1 provided by the invention can effectively interfere the expression of the walnut endogenous JrPDS gene, so that the walnut seedling endogenous JrPDS gene is silenced, the silencing rate can reach 48%, and the walnut JrPDS gene interference fragment is used for identifying the function of the walnut endogenous gene.

The invention provides a soilless substrate for blueberry cultivation and a preparation method thereof, and relates to the technical field of soilless culture of blueberries. The soilless substrate is prepared from turf, vermiculite, sawdust, pea vine treatment powder, modified coco coir, a walnut green seedcase fermented material, manure, calcium propionate and maltooligosaccharide, and the pea vine treatment powder is prepared by extracting pea vines with ethanol, boiling and drying; the walnut green seedcase fermented material is prepared by fermenting walnut green seedcases with saccharomycetes, sterilizing and fermenting with lactobacillus plantarum. According to the method, the defects in the prior art are overcome, the growth efficiency of blueberry soilless culture is improved, the high yield of blueberries is promoted, and the economic benefits in soilless culture are improved.

The utility model relates to the technical field of walnut sorting machines, in particular to an efficient novel walnut sorting machine which comprises a feeding frame and an assembly frame, a feeding mechanism is arranged on the feeding frame, a detection device is arranged at the top end of the assembly frame, the feeding mechanism comprises a temporary storage mechanism and a feeding device, and the temporary storage mechanism is connected with the assembly frame. First vibration plates are arranged at the two ends of one side of the feeding device, second vibration plates are arranged on one sides of the first vibration plates, conveying belts are arranged between the second vibration plates and the assembling frame, the two feeding mechanisms are symmetrically arranged, and a driving mechanism is arranged between the assembling frame and the four conveying belts. The driving mechanism is detachably connected with the four conveying belts, a sorting mechanism is arranged on the conveying belts, the sorting mechanism comprises nozzles and material guide frames, the nozzles are located on one sides of the conveying belts, and the walnut sorting efficiency can be improved through the multiple sets of nozzles and the material guide frames on the four conveying belts.

The utility model discloses a walnut external quality sorting device, and belongs to the technical field of agricultural product sorting devices. The feeding mechanism is in butt joint with the carrier roller conveying mechanism, the carrier roller conveying mechanism is in butt joint with the sorting mechanism, and the image collecting mechanism is installed on the carrier roller conveying mechanism. Images of walnuts are collected through the image collecting mechanism and transmitted to a machine vision algorithm to obtain category information and position information of the walnuts, and then the sorting mechanism is controlled to sort the outer quality of the walnuts; mechanical equipment is matched with a visual technology to sort the external quality of walnuts, so that the walnuts can be prevented from being damaged due to the fact that the mechanical equipment is independently used for sorting, and black spots and damaged walnuts which cannot be detected by the mechanical equipment can be detected. The damage rate is reduced; meanwhile, the sorting efficiency of the external quality of the walnuts can be ensured.

The invention belongs to the technical field of shelling equipment, and particularly relates to a walnut green seedcase removing and cleaning integrated device which comprises a containing cavity capable of containing a plurality of walnuts and further comprises a conveying belt conveying upwards in an inclined mode, the lower portion of the conveying belt penetrates through the containing cavity, and a plurality of notches capable of containing the single walnuts are formed in the surface of the conveying belt. The first peeling mechanism and the second peeling mechanism are sequentially arranged in the conveying direction of the conveying belt, the first peeling mechanism extrudes the walnuts in the containing cavities and pushes the walnuts into the corresponding notches, and the second peeling mechanism rubs with the walnuts in the notches to peel the walnuts; the washing mechanism is used for washing walnuts in the second peeling mechanism, the conveying belt and the notch at the same time; through the structure, preliminary extrusion type peeling is achieved, stacked walnuts are separated through the notches and then conveyed, then the walnuts pass through the second peeling mechanism, the peeling quality is guaranteed, and green husks are easy to clean and collect.

The invention provides a method for promoting generation of tea acid from Nemania sp YAFEF112, and relates to the technical field of microbial culture. According to the method, mycelia of Nemania sp YAFEF112 are inoculated into a culture medium containing pruned walnut branches for culture, the culture medium is an MM culture medium, and the specific formula of the culture medium comprises 1.52 g / L of monopotassium phosphate, 0.52 g / L of magnesium sulfate, 6 g / L of sodium nitrate and 0.52 g / L of potassium chloride. According to the method, the defects in the prior art are overcome, and good conditions are provided for the production of the tea pickled acid by optimizing the formula of the fermentation culture medium, adding pruned walnut branches into the culture medium, improving the fermentation conditions and increasing the content of the tea pickled acid in the Nemania sp YAFEF112 hyphae.

The invention discloses a method for improving solubility by coordinating walnut meal protein isolate with a metal polyphenol network. The method comprises the following steps: preparing a metal polyphenol network conjugate and forming a ternary graft of the conjugate and walnut protein isolate, the metal polyphenol network conjugate is formed by coordination chelation of caffeic acid and zinc ions; the formation of the ternary graft comprises the step of forming the hydrophilic ternary graft by the caffeic acid-zinc ion conjugate and different proportions of walnut protein isolate under pH cycle induction, so that the zinc-rich walnut protein isolate with remarkably improved solubility is obtained. According to the method, the solubility of the walnut meal protein can be improved to 70.88% from 30.71%, the steps are simple, the safety is high, the period is short, and the method has important significance in expanding the application of the walnut meal protein in the field of food processing.

The invention relates to the technical field of mechanical picking, and discloses a shaking and vibrating harvesting device which comprises a walking mechanism and a rack, and a power unit, a speed control system, an amplitude adjusting system, an output mechanism and an executing mechanism are arranged on the rack; the amplitude adjusting system comprises a supporting bearing seat, an input chain wheel, a power transmission shaft, a spacing output disc and a rope connecting wheel, and the power transmission shaft is arranged on the supporting bearing seat; an input chain wheel and a spacing output disc are arranged at the two ends of the power transmission shaft, and the rope connecting wheel is detachably arranged on the spacing output disc; power output by the power unit is transmitted to an input chain wheel of the amplitude adjusting system through the speed control system; the amplitude adjusting system corresponds to the output mechanism in position, and the executing mechanism is connected to a rope connecting wheel of the amplitude adjusting system and is output after passing through the output mechanism. The walnut harvester is suitable for complex mountain terrains, the shaking vibration amplitude can be adjusted, and the walnut harvesting efficiency is greatly improved.

The invention relates to the technical field of food processing, and discloses a walnut derivative capable of enhancing an immune function and a preparation method thereof, walnut kernels are subjected to pulping, centrifugal treatment and purification treatment, convenience is provided for subsequent processing treatment aiming at different components, resources are fully utilized, then enzymolysis is performed, and the quality of the walnut derivative is improved. According to the walnut derivative, active peptides in walnut protein are released through scientific proportioning and an enzymolysis treatment process, the walnut derivative is obtained through centrifugation, enzyme deactivation treatment, concentration, homogeneous emulsification, sterilization and freeze drying, and the walnut derivative can be directly and rapidly absorbed by a human body, is rich in nutrition, has the functions of enhancing the immunity of the human body, resisting aging and oxidation and recovering fatigue, and can be used for preparing the walnut derivative. And the product has the advantages of good stability, high bioavailability, good solubility and good stability.

The invention provides a collectable walnut pairing method and device. The method comprises the following steps: classifying a plurality of collection walnuts based on a classification algorithm to obtain a first set; marking the amusement walnuts in the first set as first amusement walnuts; acquiring a first image of the target collection walnut, acquiring a second image of the first collection walnut, and acquiring texture complexity, contour variation and chromaticity dispersion of the second image; calculating texture similarity, color similarity and boundary similarity based on the first image and the second image; determining a texture similarity weight, a boundary similarity weight and a color similarity weight based on the texture complexity, the contour variability and the chromaticity dispersion; and based on the texture similarity, the texture similarity weight, the boundary similarity, the boundary similarity weight, the color similarity and the color similarity weight, determining a first collection walnut most similar to the target collection walnut. According to the invention, high matching between walnuts can be realized more accurately in a complex environment.

The invention relates to the field of microbial fermented food, and discloses lactobacillus plantarum and application thereof, and fermented walnut yoghourt and a preparation method thereof. The preservation number of the lactobacillus plantarum provided by the invention is CCTCC (China Center For Type Culture Collection) NO: M 20242279. The lactobacillus plantarum with better performance is obtained from the nature, the lactobacillus plantarum is compounded with other yoghourt fermentation probiotics for fermentation to prepare the walnut yoghourt, and compared with a contrast fermented product of a single strain and a compound microorganism strain, the alpha-glucosidase inhibition rate is remarkably improved, and the walnut yoghourt has the advantages that the alpha-glucosidase inhibition rate is remarkably increased; excellent activity of improving blood sugar is shown. The invention not only provides an effective, time-saving and energy-saving preparation process method of the walnut yoghurt, but also provides a wide foundation for further application of walnuts.

The utility model relates to the technical field of walnut processing, and discloses a walnut kernel stir-frying device for walnut processing, which comprises a base, the upper surface of the base is fixedly connected with two support plates, the opposite surfaces of the two support plates are provided with rotatable stir-frying cylinders, and the upper surface of the base is fixedly connected with an L-shaped plate. And the upper surface of the L-shaped plate is fixedly connected with a rotating motor. According to the walnut kernel stir-frying device for walnut processing, materials such as walnut kernels are placed in the stir-frying cylinder, the driving motor is started, the driving motor drives the stirring rod to rotate to stir-fry the walnut kernels, and in the stir-frying process, the space above the stir-frying cylinder can be shielded by the blocking cover, so that dust in the external space is prevented from falling into the stir-frying cylinder; meanwhile, water vapor generated in the stir-frying process can be discharged through the concentric-square-shaped air outlet frame, the activated carbon plate can adsorb moisture in the water vapor, and the situation that the quality of finished products is reduced due to the fact that the moisture is absorbed again in the stir-frying process of the walnut kernels is avoided.

The utility model discloses a walnut peeling machine, which relates to the technical field of agricultural equipment. The main purpose is to provide a walnut peeling machine that can improve the peeling rate of walnuts and reduce the breakage rate of walnuts. The main technical scheme of the utility model is: a walnut peeling machine, including: a frame; a loading component, a first transmission component is tiltedly arranged on the frame, and a feeding component is arranged at the lower part of the discharge end of the first transmission component; a peeling component, a second transmission component is arranged at the lower part of the first transmission component, and a plurality of upper blade bodies are evenly distributed on the second transmission component, a mounting plate is arranged at the lower part of the upper blade assembly, and a plurality of movable grooves are arranged on the mounting plate, and the two ends of the lower blade body are inserted into the movable grooves, and the telescopic component is sleeved on the two ends of the lower blade body; a discharge component, and the discharge component is arranged at the lower part of one end of the lower blade assembly for conveying walnuts. The utility model is mainly used for walnut peeling.

The invention relates to a nondestructive walnut grading detection method based on a ray technology, which comprises the following steps: taking walnuts as materials, firstly carrying out CT imaging and shell breaking on different walnuts with shells, then carrying out manual grading marking to obtain a training set, carrying out feature recognition and grading on walnut kernels by using a deep residual network model, and outputting a grading detection result. Training the deep residual network model by minimizing the grading detection result and the actual grade to obtain a trained walnut grading detection model; and performing CT imaging on the walnut kernels with shells by using the trained walnut grading detection model to obtain a grading result. According to the invention, an image identification classification model is constructed through an algorithm, and a confusion matrix graph and an ROC curve are introduced to verify the feasibility and accuracy of the model in a certain range. The non-destructive testing technology is used for grading the walnuts with the shells, and the method has the advantages of cost saving, time saving and convenience.

The invention discloses application of walnut peptide in preparation of a medicine for treating or preventing cognitive impairment of diabetes mellitus. The preparation process of the walnut peptide is as follows: after walnut protein is subjected to enzymolysis by alkaline protease, the molecular weight cut-off is 1t; and separating by using a 3kDa ultrafiltration tube to obtain the walnut peptide. The walnut peptide can effectively reduce the blood sugar level of a diabetic model mouse, regulate the disorder effect of blood fat, relieve brain tissue oxidative damage and hippocampal neuroinflammation damage of the diabetic model mouse, and improve learning and memory damage. The compound can be used for preparing medicines for treating or preventing cognitive impairment of diabetes mellitus.

The invention discloses a walnut shelling machine, comprising a casing, wherein a conveyor belt circulating up and down is arranged in the casing, wherein a plurality of jigs are arranged in the conveyor belt, and the walnuts can be moved to the conveyor belt by a clamping device, and are circulated along the conveyor belt. When the walnuts pass through a rotary cutting device, the upper and lower ends of the walnuts are rotary cut to form walnut shells, and when the walnuts are transported to a fruit taking device after cutting, the fruit taking device pushes out the pulp and drops it into a pulp channel for collection, and the remaining walnut shells in the conveyor belt are transported to a jig opening and closing device below, and finally the jig opening and closing device opens the jig in the conveyor belt to make the walnut shells fall into the fruit shell channel. The walnuts are processed by various devices, which is more convenient, improves productivity, and saves costs. When the walnuts are rotary cut by the rotary cutting device, the rotary cutting cylinder can be adjusted to make the electric cutting knife accurately cut the walnut shells, thereby reducing the damage to the walnut kernels during shelling.

The invention belongs to the technical field of food biotechnology and functional food processing, and particularly relates to high-protein and high-alpha-linolenic acid walnut composite milk and a green preparation method thereof. The high-protein and high-alpha-linolenic-acid walnut composite milk is obtained by taking microwave-detoxified and non-degummed flaxseeds and microwave-cooked and non-peeled walnuts as raw materials, optimizing the conditions such as the addition amount of the flaxseeds, the material-liquid ratio, the soaking time and the grinding time and combining an ultrasonic coupling enzymolysis technology. The preparation method is green and environment-friendly, the product stability can be maintained without an exogenous additive, and the prepared walnut composite common plant milk is safe, nutritional, delicious, purely natural and suitable for popularization and application.

The invention relates to the technical field of extraction and utilization of chemical substances in walnut green seedcases, in particular to a production process of urolithin A. The production process specifically comprises the following steps: obtaining the walnut green seedcases; walnut green seedcase is mashed into pulp, a stabilizing solution is added, ultrasonic treatment is performed after uniform stirring, the fermentation substrate is obtained, and the stabilizing solution is an aqueous solution of a compound of sulfydryl-beta-cyclodextrin and chitosan; primary fermentation: inoculating a microbial bacterial liquid A for anaerobic fermentation, then filtering and collecting filtrate, the microbial bacterial liquid A being obtained by respectively inoculating bacillus velezensis and bacillus coagulans into a culture medium A for shake cultivation and activation and then mixing the bacillus velezensis and the bacillus coagulans; secondary fermentation: inoculating the filtrate with a microbial bacterial liquid B for anaerobic fermentation again, wherein the microbial bacterial liquid B is obtained by inoculating enterococcus faecium into a culture medium B for culture; and extracting. According to the method, the stabilizing solution is added into the walnut green seedcase, and two-stage fermentation is performed, so that the yield and the conversion rate of urolithin A are remarkably improved, and the method is safe, environmentally friendly and capable of being industrialized.

A deastringency device for walnuts comprises: a deastringency treatment tank for accommodating walnut kernels requiring deastringency treatment; the walnut kernel placing platform is arranged in the deastringency treatment tank and is used for bearing walnut kernels needing to be subjected to deastringency treatment; and the steam generation mechanism is communicated with the deastringency treatment tank, corresponds to the walnut kernel placement platform and is used for providing high-temperature steam of 95-120 DEG C for the walnut kernels in the deastringency treatment tank for 1-5 minutes for deastringency of the walnut kernels. By means of the structure, the problems that in the prior art, deastringency equipment for hot water soaking, long-time alkali treatment, high-concentration alkali treatment, baking and the like is complex in operation process, high in time consumption and economic cost and large in walnut nutrition loss can be effectively solved.