458 results about "Bark" patented technology

The invention discloses a clamping jaw mechanism of an intelligent pomegranate tree sprout tillers removing device, and belongs to the technical field of agricultural machinery. The mechanism comprises a robot connecting rod, a base, a clamping jaw driving mechanism and a dynamic clamping mechanism. The dynamic clamping mechanism is composed of an elastic cloth belt and a rotatable rubber roller and is rapidly installed on a clamping jaw vertical rod through a lock catch, the elastic cloth belt can stretch out and draw back along with the diameter change of a trunk, the rubber roller rolls to be attached to the surface of the trunk, and bark is prevented from being damaged. The clamping jaw driving mechanism adopts a double-shaft-extension electric cylinder to drive clamping jaws to open and close, and precise clamping is achieved in cooperation with servo torque control. The clamping jaw solves the problems that a traditional clamping jaw is high in trunk damage risk, poor in adaptability and insufficient in terrain compatibility, has the advantages of being high in protectiveness, outstanding in dynamic adaptability, convenient and fast to maintain and the like, and meets the efficient automation requirement of pomegranate orchard sprout tillers removing operation.

The present invention discloses a barking and cutting mechanism for a kenaf harvester, comprising a mounting frame on which a barking mechanism, a barking mechanism, and a cutting mechanism are sequentially mounted. The barking mechanism cuts the bark of both sides of a kenaf stalk. After the kenaf stalk leaves the barking mechanism, it is taken over by the barking mechanism, which peels off the bark of the kenaf stalk. After the kenaf stalk leaves the barking mechanism, it is taken over by the cutting mechanism, which cuts the kenaf stalk into multiple segments. The present invention allows the kenaf stalk structure to be stably conveyed forward, thereby stably completing the bark cutting and peeling, and cutting the stalk into neat small segments, thereby facilitating subsequent collection and bundling.

A method for making a growing medium includes a step of combining tree bark and / or wood components together to form an initial composition; heating the initial composition to a temperature greater than about 149° C. under steam in a pressurized vessel; processing the initial composition through a refiner with a plurality of opposing disks to obtain the fibrous growing medium, the refiner separating fibers from each other; wherein the growing medium has total porosity of 88 volume % or more.

The invention discloses a tree species identification method based on a bark image and a lightweight deep learning model, and belongs to the crossing field of computer vision and forestry information technology, and the method comprises the steps: S1, collecting an image of a tree bark area; s2, preprocessing the collected data, and positioning and cutting a bark area based on an image segmentation technology; s3, using an improved lightweight deep learning model of a ConvNeXtV2 framework to carry out feature extraction on the preprocessed bark image; s4, after feature extraction is completed, features are integrated by using an adaptive feature fusion strategy, then tree species are classified, and a tree species identification result is output; s5, performing multi-dimensional verification and visual analysis on the model performance; according to the method, the calculation complexity is remarkably reduced, the generalization ability and stability of the model are kept, and reliable technical support is provided for practical application such as ecological monitoring, forest resource management and intelligent forestry.

The invention discloses a surrounding type self-adaptive moving electric control rubber tapping device which comprises a surrounding type assembly used for surrounding a rubber tree in the radial direction. A circumferential guide rail is arranged on the outer side of the surrounding type assembly; the self-adaptive rolling wheel assembly is arranged on the inner side of the surrounding type assembly and used for transversely or vertically moving the device; the fixed clamping jaw assembly is slidably arranged on the guide rail through a guide rail connecting piece and used for fixing the device to the rubber tree. The electric control rubber tapping knife assembly is installed on the surrounding type assembly and used for cutting the surface of the rubber tree. The laser positioning module is used for positioning the position of the device; the control module is used for controlling operation of the device. The device can adapt to rubber trunks of different sizes, a stable and uniform spiral rubber cutting path is formed on the surface of bark, and the latex collecting effect is improved.

The present invention provides a fermented liquid of Sequoia sempervirens stems, a preparation method thereof and an application thereof, which specifically comprise the following steps: (1) pulverize dry Sequoia sempervirens bark, add inulin, carbon source, nitrogen source, inorganic salts and water, and perform sterilization to obtain a dry Sequoia sempervirens bark culture medium; (2) inoculate Saccharomyces cerevisiae and Bacillus subtilis into the dry Sequoia sempervirens bark culture medium for fermentation, and then perform sterilization and centrifugation to obtain a fermented liquid of Sequoia sempervirens stems. Experimental tests show that the fermented liquid of Sequoia sempervirens stems prepared according to the method provided by the present invention has a high content of active ingredients and has various effects such as anti-inflammatory, soothing and anti-allergic, promoting wound healing, and anti-aging. The fermented liquid prepared by using the method provided by the present invention can be widely applied in the preparation of cosmetics with anti-aging, anti-allergic and repair effects.

The invention discloses a pruning auxiliary device for landscape landscaping, and relates to the technical field of landscaping pruning, the pruning auxiliary device comprises a moving mechanism, the top of the moving mechanism is fixedly provided with a pruning mechanism, and the top of the moving mechanism is fixedly provided with a crushing mechanism; the trimming mechanism comprises an electric turntable I; according to the device, a gear transmission system is driven by a motor, intelligent clamping of branches is achieved, metal microneedles are accurately inserted into the branches, the branches are effectively fixed, damage to barks due to shaking or sliding is reduced, meanwhile, scattering of the pruned branches is avoided, and by means of a pressure sensor and a distance measuring sensor after clamping, the device is convenient to use and high in practicability. The diameter of a branch can be detected in real time, the rotating speed and torque of the motor can be automatically adjusted according to data, the optimal matching state between a pruning knife and the branch in the pruning process is ensured through the self-adaptive adjusting capacity, the pruning efficiency and quality are improved, meanwhile, excessive abrasion of a cutter due to long-time high-load operation is avoided, and the service life of the pruning knife is prolonged. And the service life of the cutter is prolonged.

The utility model discloses a tree supporting device, which belongs to the technical field of tree supporting and comprises a tree main body and a supporting device main body, the tree supporting device is novel in design and ingenious, compared with the prior art, the tree supporting device in the technical scheme has higher stability and adjustment flexibility, rapid adjustment can be conducted according to trees of different sizes, continuous and stable supporting force is provided, friction force between the tree supporting device and barks is increased through a buffer pad, the contact area is increased through a double-iron-wire connection mode, and the tree supporting effect is improved. The long-term stability of the supporting device is enhanced, the service life of the device is remarkably prolonged, the device is made of high-strength materials so as to ensure the supporting effect of the device, the wind resistance of trees is enhanced by optimizing the fixing mode, the influence of the external environment on the trees is reduced, and the survival rate of the trees is increased. The device is convenient to store, carry and reuse, meets the requirements of tree species of different sizes, and greatly improves the practicability.

The invention relates to the technical field of flower planting substrates, and discloses an orchid fertilization-free planting substrate based on nitrogen-fixing phosphate-solubilizing and potassium-solubilizing bacteria, which comprises sphagna, bark, vermiculite, charcoal, turfy soil, humic acid, seaweed oligosaccharide, nitrogen-fixing bacteria, phosphate-solubilizing bacteria and potassium-solubilizing bacteria. Wherein the nitrogen-fixing bacteria can provide nitrogen for the orchid, the phosphorus and potassium solubilizing bacteria can decompose phosphorus and potassium in charcoal and bark to provide nutrition for the orchid, the sphagna plays a role in moisturizing, the tree and vermiculite play a role in ventilation, and the humic acid and the seaweed oligosaccharide play a role in further promoting rooting and growth of flowers and plants and reproduction of beneficial microorganisms; the components in the fertilizer have a synergistic effect, the fertilization-free period is extremely long, essential elements for plants can still be efficiently provided under the condition of no fertilization, the orchid cultivation difficulty is reduced, flowering is promoted, plant diseases and insect pests are inhibited by adjusting the water-retaining property and the air permeability, and better flower growth and ornamental effects are achieved on the whole.

To provide a weed control base material capable of exerting stable weed control and radiation shielding functions over a long period of time, and a weed control method.SOLUTION: A weed control base material 1 is formed by kneading a base material 10 made of an inorganic porous material 11 and a plurality of plant materials 12 with a solidifying material 20, where the plant materials 11 include fibrous bodies made of a secondary crushed material of coniferous bark 11a. A weed control method includes the steps of: adding water W to the weed control base material 1 and kneading it to produce a mixed base material 1a; and laying the mixed base material 1a on a target base G and compacting it, or spraying the mixed base material 1a on the target base G.SELECTED DRAWING: None

The invention discloses a segregation method of bark suppository cells, and belongs to the technical field of plant cell segregation treatment. The isolation method of the bark suppository cells comprises the following steps: (1) cooking bark particles to remove impurities, so as to obtain impurity-removed suppository particles; (2) adding the impurity-removed suberect particles into a segregation reagent, and reacting for 40-60 minutes under the condition of 55-65 DEG C, so as to obtain segregated suberect cells; the segregation reagent is composed of a sodium hypochlorite solution with the mass concentration of 1%-10% and a hydrogen peroxide solution with the mass concentration of 0.5%-20%; (3) sequentially carrying out ultrasonic dispersion and freeze-drying treatment on the isolated suppository cells to obtain a suppository cell aggregate; and dispersing the suberect cell aggregate by using a weak polar reagent to obtain a complete single suberect cell. According to the method, the wooden suppository cells are separated through the synergistic oxidation effect of the sodium hypochlorite and the hydrogen peroxide solution, and efficient and complete separation of the wooden suppository cells in a short time is achieved.

The invention discloses intelligent peeling and harvesting equipment for agricultural trees. The intelligent peeling and harvesting equipment comprises a walking trolley, a mechanical arm, an annular clamp fixing part, an annular longitudinal cutting part and an annular peeling part. The annular and longitudinal cutting component is a key component used for achieving annular cutting and longitudinal cutting, an annular cutter groove is cut in the surface of the bark in an annular cutting mode, after annular cutting is finished, a plurality of vertical cutter grooves are cut in the surface of the bark in a longitudinal cutting mode to be used for splitting the bark, and finally the annular peeling component is used for peeling. The barks directly fall off in a strip section mode. The problem that barks are difficult to harvest is solved, the peeling method based on the embedded blade is provided, the mechanical arm is used for carrying the ring clamp fixing part, the ring longitudinal cutting part and the ring peeling part, ring cutting and vertical cutting are used for assisting the peeling blade to be effectively embedded into the barks, peeling is carried out along the ring cutting and vertical cutting tracks, and the peeling efficiency is improved. And the harvesting efficiency and quality are greatly improved.

The present invention provides a method for constructing a high-performance liquid chromatography characteristic spectrum of Chuantong bark medicinal materials, decoction pieces, standard decoctions, intermediates, and their formulated granules. The present invention constructs a high-performance liquid chromatography characteristic spectrum detection method for Chuantong bark (Cassia truncatula), confirms nine characteristic peaks, specifies their relative retention times, establishes a control characteristic spectrum, fully demonstrates the chemical composition characteristics of Chuantong bark, and comprehensively reflects the quality information of Chuantong bark, thereby achieving comprehensive and effective quality control of Chuantong bark medicinal materials, decoction pieces, and related preparations.

The invention discloses an intelligent cut-log punching, inoculating and stacking all-in-one machine, and relates to the field of agricultural machinery, the intelligent cut-log punching, inoculating and stacking all-in-one machine comprises a punching device, an inoculating device and a stacking device which are mounted above a cut-log conveying device, and further comprises a bark cover conveying device used for conveying bark covers obtained by the punching device to the inoculating device; the punching device comprises a punching assembly used for obtaining bark covers and a drilling assembly used for forming inoculation holes, the punching assembly is installed on a telescopic assembly, and the telescopic assembly is used for switching the lower end of the punching device between the cut-log conveying device and the bark cover conveying device; the problems that in an existing cut-log cultivation method, inoculation hole capping operation is tedious, large-batch operation cannot be achieved, and meanwhile time and labor are consumed during manufacturing of a large number of bark covers are solved.

The invention relates to bark-like nano-zinc oxide and a preparation method thereof, and belongs to the technical field of liquid-phase synthesis of nano-zinc oxide. According to the invention, the nano zinc oxide material with bark-like microstructure is prepared by regulating and controlling the liquid phase environment and the thermodynamic and kinetic parameters of the reaction. The material has obvious layering sense and pore characteristics, the material is endowed with significantly enhanced physicochemical characteristics, for example, the BET specific surface area is significantly increased, and meanwhile, the high porosity and the nanocrystal boundary effect have a synergistic effect, so that active oxygen species and zinc ion antibacterial active species can be efficiently generated, and the antibacterial performance of the material is significantly improved. An antibacterial experiment shows that the antibacterial rate of the material to escherichia coli and staphylococcus aureus exceeds 99.9%, and the antibacterial rate of the material to candida albicans exceeds 99.0%. The material has application potential in the fields of medical dressings, antibacterial textiles, water purification and the like.

The invention relates to a natural rubber tree detection device and detection method based on a hyperspectral technology. The device comprises a walking chassis, a mechanical arm, an imaging spectrometer, a visual camera, a portable supporting holder, a laser scanning system, a data acquisition system, a data transmission module, a data processing module and a power supply system. Spectral reflection data of different layers of the bark of the rubber tree are obtained by utilizing an imaging spectrometer, efficient sampling is realized by combining laser scanning, and the data are sent to an analysis terminal through wireless transmission. Through a built-in data processing module, a spectrum separation and feature extraction technology is adopted, and a machine learning model is combined to realize prediction of bark health conditions, tree ages and plant diseases and insect pests. The device has the characteristics of portability, non-destructiveness, high efficiency and intelligence, and is suitable for tree health management and precision agricultural monitoring in natural rubber parks.

The utility model discloses short bark sorting equipment, which is characterized in that a sorting roller is arranged below the lower edge of the blanking end of a feeding belt, the lower edge of the blanking end and the sorting roller form a wind-dispelling bark sorting gap, and an air duct blows air towards the lower edge of the blanking end, so that barks are bent into the wind-dispelling bark sorting gap when falling off the upper edge of the blanking end; the feeding end of the wood discharging roller row receives the short wood falling from the discharging end, and the sorting roller is further suitable for the short wood at the feeding end to abut against. Compared with the prior art, the barks, the short wood and the gravels are fully separated, the pure barks are placed in the boiler and feeding equipment of the boiler, the damage risk of the boiler and the feeding equipment is reduced, the short wood is sorted, raw materials are fully utilized, waste is avoided, the situation that the stones are accumulated on the boiler is avoided, and insufficient combustion of the boiler is avoided.

The invention provides a composition for improving the permeation effect of a Campania maculata bark extract as well as a preparation method and application of the composition, and relates to the technical field of cosmetics. The invention provides an anti-aging composition for improving the permeation effect of a Campandra maculata bark extract. The anti-aging composition comprises recombinant human III type collagen, the Campandra maculata bark extract, an annona squamosa fruit extract, a Flos Magnoliae extract and a film-forming agent, the film-forming agent is composed of rhamnose and a trimethyl pentanediol / adipic acid / glycerol cross-linked polymer. The combination of the recombinant human III type collagen and the film-forming agent can strengthen hydration of cuticle, optimize the controlled release efficiency of active ingredients and broaden the permeation path, thereby forming an efficient permeation network from the skin surface to the deep layer. The combination of the Campandra mollissima bark extract, the Annona mollissima fruit extract and the Flos Magnoliae extract can construct a multi-dimensional antioxidant network, activate longevity proteins to resist saccharification and DNA damage, and comprehensively delay skin aging.

The invention belongs to the technical field of medicines, and particularly relates to application of 1, 2, 3, 4, 6-pentagalloylglucose (PGG) in inhibition of peptidyl arginine deiminase (PAD4). The invention relates to an application of PGG in preparation of a medicine for inhibiting PAD4 in a subject or a biological sample. Experiments show that the moutan bark extract has a definite inhibiting effect on PAD4, and it is confirmed that moutan bark is a traditional Chinese medicine which is hopeful to screen out a natural PAD4 inhibitor. The PGG in the tree peony bark extract is confirmed to be a natural compound with a strong inhibition effect on PAD4 by analyzing bioactive components in the tree peony bark extract, and the PGG can provide support for developing a PDA4 inhibitor and preparing a medicine for treating PAD4-mediated diseases, obstacles or symptoms, and has very important significance.

The invention relates to the technical field of traditional Chinese medicine compositions, and discloses a traditional Chinese medicine composition for wound healing and a preparation method thereof.The traditional Chinese medicine composition used in the early stage comprises 10-12 parts of rheum officinale, 5-6 parts of coptis chinensis, 10-12 parts of scutellaria baicalensis, 10-12 parts of golden cypress, 10-12 parts of corydalis tuber, 6-7 parts of pseudo-ginseng, 5-6 parts of pollen typhae, 4-5 parts of dragon's blood, 10-12 parts of sanguisorba officinalis, 10-13 parts of ramulus mori and 10-12 parts of gallnut; the traditional Chinese medicine composition used in the middle stage is prepared from 10-12 parts of radix astragali, 10-12 parts of radix angelicae sinensis, 10-12 parts of radix salviae miltiorrhizae, 10-12 parts of talc, 10-12 parts of ramulus mori, 10-12 parts of gallnut, 10-12 parts of rhizoma chuanxiong, 4-5 parts of resina draconis, 10-12 parts of frankincense and 10-12 parts of myrrh; the traditional Chinese medicine composition used in the later period comprises 10-12 parts of radix astragali, 10-12 parts of radix dipsaci, 10-12 parts of radix angelicae sinensis, 10-12 parts of rhizoma chuanxiong, 10-12 parts of gallnut, 10-12 parts of ramulus mori, 10-12 parts of radix codonopsis, 10-12 parts of radix salviae miltiorrhizae, 10-12 parts of radix morindae officinalis and 10-12 parts of talc. Wound treatment is divided into three stages, the cure rate of chronic refractory wounds (CRW) can be remarkably increased, inflammatory factors are inhibited, and tissue regeneration is promoted.

The invention relates to the field of plant extracts, and discloses a plant composition for regulating scalp micro-ecological balance and application thereof. The plant composition disclosed by the invention takes extracts of leontopodium alpinum and birch bark as active ingredients, has the characteristics of effectively inhibiting staphylococcus aureus and restrictive malassezia and not influencing normal proliferation of staphylococcus epidermidis, so that the plant composition can be used for regulating scalp micro-ecological balance, regulating and controlling scalp microbial flora in a targeted manner and improving scalp microecological balance. Therefore, the scalp grease secretion is reduced, and the scalp problems such as dandruff, scalp itching, scalp papule, allergy and redness, exuberant grease secretion and the like are relieved.

The invention discloses B-ring split-ring flavone as well as a preparation method and application thereof. The B-ring split-ring flavone is obtained by being separated from cinnamon bark; the structural formula of the compound is as shown in a formula (I) and / or a formula (II): # imgabs0 #; the B-ring split-ring flavone is separated from dried bark of cinnamomum cassia of a lauraceae cinnamomum plant, liver protection activity evaluation is carried out by using an alcohol-induced liver cell injury model, and the B-ring split-ring flavone is found to be capable of effectively relieving alcohol-induced normal liver cell injury of mice, reducing fat accumulation and improving the liver protection activity. The B-ring split-ring flavone provided by the invention has liver protection activity, can be applied to preparation of liver protection medicines, and has good research and development prospects.

The invention relates to a rapid thin-layer identification method for seven medicinal materials in ten-ingredient nerve-soothing granules. The method is characterized in that two test solutions of a trichloromethane layer and an n-butyl alcohol layer are obtained by a simple, convenient and rapid pretreatment method, the trichloromethane layer can be used for identifying schisandra chinensis, moutan bark and lotus plumule, and the n-butyl alcohol layer can be used for identifying pulp of dogwood fruit, fried gardenia, white paeony root and rhizoma anemarrhenae; the thin-layer identification method disclosed by the invention can be used for identifying 7 medicinal materials in 10 medicinal materials in the whole formula of the ten-ingredient nerve-soothing granules, and is convenient to operate, clear in spots and high in specificity.

The invention relates to a process for purifying maritime pine bark by selective sieving and grinding, as well as the extracts obtained from this purified bark. The purified bark of the invention is obtained by a three-step process consisting of pre-sieving the raw bark, followed by selective grinding of the pre-sieved bark with a non-shearing grinder, followed by sieving of the selectively ground raw bark. The maritime pine bark extracts obtained from this purified bark can be obtained by extraction with water or with a mixture of water and ethanol. Extracts obtained by water extraction have a procyanidin content of between 65% and 75%, while extracts obtained with a mixture of water and ethanol have a procyanidin content greater than or equal to 70%.Extracts of maritime pine bark obtained from the purified bark of the invention can be used as ingredients for the formulation of food supplements, functional foods or cosmetic products.

The utility model discloses an electric device for bark scraping, which comprises a bark scraping machine body and a motor arranged in the bark scraping machine body, a transmission mechanism is arranged on the motor in the bark scraping machine body, the transmission mechanism is connected with a cutter wheel, and the cutter wheel is connected with a motor. The transmission mechanism comprises a driving gear arranged on an output shaft of the motor and a fixing seat arranged on the end face of the motor, the fixing seat is located in the bark scraping machine body, a rotating shaft is arranged in the fixing seat, a rotating gear in meshing transmission with the driving gear is arranged on the rotating shaft, and the driving gear is driven by the rotating gear to rotate. The rotating shaft is provided with the cutter wheel, the cutter wheel is located on the outer surface of the bark scraping machine body, and an outer bearing is arranged on the rotating shaft close to the cutter wheel. According to the utility model, the design is more reasonable, the deviation phenomenon in the operation process is avoided, the damage to equipment is reduced, the service life of the equipment is greatly prolonged, and the high use requirement is more favorably met.

The invention discloses a composite agent for preventing and treating forest diseases and insect pests and a preparation method thereof, and relates to the technical field of forest disease and insect pest prevention and treatment. The composite agent is composed of a natural active extract, a synergistic auxiliary agent and a repair conditioning agent, the natural active extract comprises a melia azedarach fruit-leaf extract, a camellia seed meal extract, a pinus massoniana needle leaf extract and a camphor tree bark extract, and the composite agent has broad-spectrum insecticidal and bacteriostatic effects; a tea residue modified penetrant and early indica rice starch sustained-release microspheres are adopted as the synergistic auxiliaries, so that the adhesiveness and infiltration capacity of the pesticide on waxy leaves are remarkably improved, and long-acting sustained release of active ingredients is realized; the restoration regulator is moso bamboo vinegar, can promote the growth of new shoots of trees and the synthesis of chlorophyll, and enhances the stress resistance of the trees. All the components are synergistically prepared through a green process, the combined effect of multiple components is fully played, insect and disease prevention, long lasting period and ecological restoration integration are achieved, and an efficient and ecologically compatible novel plant protection technical scheme is provided for forest health management and sustainable development.

The invention discloses a bark crack bionic lattice structure design method based on a three-period minimal curved surface, a bark crack bionic lattice structure and a bone implantation stent. The bark crack bionic lattice structure design method comprises the following steps: S1, constructing a parent lattice structure by adopting a three-period minimal curved surface function; s2, crack characteristics are constructed in the matrix lattice structure through a bidirectional offset contour surface method, a bark crack bionic lattice structure is formed, and the crack size and the relative density are controlled through offset parameters; s3, the relative density of the bark crack bionic lattice structure is calculated through triple integration, and the volume fraction of the generated model is controlled; and S4, crystal orientation design and rotation angle design are conducted on the bark crack bionic lattice structure, so that the elastic modulus and mass transfer performance of the bark crack bionic lattice structure are regulated and controlled.

One variation of a method includes: accessing an audio feed captured by an audio sensor integrated within a training apparatus deployed in an environment and configured to dispense units of a treat into a working field in the environment; detecting a bark event at a first time based on audible signals extracted from the audio feed; in response to detecting the bark event, based on environmental signals extracted from the audio feed, interpreting a set of environmental data representing conditions of the environment at the first time; selecting an intervention action, in a set of intervention actions, configured to mitigate the bark event; triggering the training apparatus to dispense units of the treat according to the intervention action; predicting an environmental trigger for the dog based on the bark event and the set of environmental data; and storing the environmental trigger in a dog profile generated for the dog.

The tree nail opener comprises a clamp body, a locking piece, a cutter assembly and an abutting piece, the clamp body is clamped on a tree trunk and can be suitable for trees with different thicknesses, the locking piece can lock an opening of the clamp body and can effectively control the depth of an incision, the clamp body can surround the tree by one circle by alternately pushing and pulling two clamp handles with two hands, and the tree nail opener is convenient to use. The cutter assembly comprises two disk saws and a scraping cutter, two times of cutting and bark removal can be completed at the same time by surrounding the cutter assembly by one circle, the labor intensity can be greatly reduced, the abutting piece comprises two rotating wheels, friction force can be reduced, the labor intensity can be relieved, elastic pieces are arranged on the two rotating wheels, and the adaptability to the shape and hardness of trees is improved.

The invention relates to the technical field of biology, in particular to a pine bark polyphenol extract as well as a preparation method and application thereof. According to the present invention, the pine tree bark polyphenol extract is obtained through extraction with an ethanol solution, and the pine tree bark polyphenol extract mainly comprises 2-Hydroxy-4-hydroxybenzoic acid, Pinosylvin, Hispidulin, 3, 5-Dimethoxyphenol, 2, 3, 5, 4 '-Tetrahydroxystilbene, 2-O-beta-D-glucose, Quercetin-3-O-glucose, 6-O-Caffeoyl-D-glucose, Galvantinol, MeIAA and Rhapontigenin, and the pine tree bark polyphenol extract can be used for preparing the pine tree bark polyphenol extract, and can be used for preparing the pine tree bark polyphenol extract, the pine tree bark polyphenol extract, the pine tree bark polyphenol extract, the pine tree bark polyphenol extract, the pine tree bark polyphenol extract, the pine tree bark polyphenol extract and the preparation method thereof, the pine bark polyphenol extract can be used for effectively relieving LPS (lipopolysaccharide)-induced intestinal barrier injury of weaned piglets by regulating intestinal flora (improving Pediococcus abundance and reducing Alloprevotella abundance) and a tryptophan-AhR pathway under the condition that the addition amount of the pine bark polyphenol extract is lower than 0.05 wt%.