330results about How to "Reduce extraction time" patented technology

The invention relates to the technical field of plant extraction, in particular to an intelligent plant extraction control method and system, and the method comprises the following steps: based on historic plant extraction data, including temperature, pressure and pH value during extraction, analyzing the long-term trend of parameters, predicting the requirements of plant extraction conditions by simulating parameter reactions under various conditions, and obtaining a plant extraction result; and obtaining a parameter prediction result. According to the method, long-term trend prediction of parameters such as temperature, pressure and pH value is realized through analysis of historically recorded plant extraction data, so that the parameters of extraction equipment are adjusted in advance, changes of different plant materials and environmental conditions are effectively adapted, the extraction efficiency is optimized, and by dynamically simulating the expression of the extraction efficiency in various time periods, the extraction efficiency is improved. According to the innovative scheme, an optimal extraction time window is mined, resource consumption and extraction time in the extraction process are reduced, and meanwhile the quality and consistency of extracts are kept.

The invention belongs to the technical field of biology, and particularly relates to an extraction method of polydeoxyribonucleotide, which comprises the following steps: carrying out homogenate treatment on pretreated in-vitro testis tissue, filtering the obtained homogenate, adding a pancreas extract into the filtrate, and stirring to obtain enzymatic hydrolysate; and precipitating protein in the enzymatic hydrolysate, removing the protein, adding sodium acetate for treatment, adding absolute ethyl alcohol for precipitation, centrifuging, washing the obtained precipitate, and drying to obtain the product. Common trypsin and lipase in fish pancreas are beneficial to release of DNA, the fish pancreas extract is applied to extraction of the polydeoxyribonucleotide, the extraction time can be remarkably shortened, the yield can be increased, meanwhile, nuclease in the fish pancreas extract can effectively degrade DNA, and small-fragment polydeoxyribonucleotide is obtained.

The invention discloses a planting plot space structure reconstruction method, system and device and a storage medium, and relates to the technical field of remote sensing application. The method comprises the following steps: acquiring a remote sensing image of a target planting area; performing partition deconstruction according to the remote sensing image to obtain a plurality of farming areas and corresponding area types; the region types comprise paddy fields, regular planting plots, fuzzy planting plots, terraced fields and garden plots; selecting a corresponding image extraction model according to the region type, and predicting the image of each farming region by using the image extraction model to obtain a predicted intensity map; the prediction intensity map comprises an edge prediction intensity map and a surface prediction intensity map; the image extraction model comprises a conventional edge model, a fine edge model and a texture model; performing grid vectorization processing on the prediction intensity map to obtain a pattern spot vector surface; and performing vector fusion processing on each pattern spot vector surface to obtain plot pattern spot data. According to the invention, the extraction precision of the planting plot can be improved.

The invention relates to the technical field of video processing, in particular to a video key frame extraction method and system based on shot segmentation and a VGG neural network, and the method comprises the steps: firstly, extracting LBP-HF features and Canny features of continuous video frames, and obtaining shot boundary frames; then calculating the inter-frame similarity of boundary frames of adjacent shots, and dividing each shot into an active area or an inactive area by setting a threshold value; selecting a shot boundary frame as a coarse extraction key frame set for an inactive area; for the active area, sequentially inputting the video frames in the shot into a VGG19 convolutional neural network for feature vector description, extracting image depth features, calculating the similarity between the video frames, setting a threshold value to determine key frames, and adding the obtained key frames of the active area into a coarse extraction key frame set; and finally, removing key frames with high similarity in the roughly extracted key frame set to obtain a final video key frame set. According to the method, the key frame extraction efficiency and accuracy are effectively improved.

The invention discloses a method for extracting curcumin from turmeric, which comprises the following steps: adding a deep eutectic solvent solution into turmeric powder, adding pectinase, uniformly mixing, adding terpilenol, performing magnetic stirring extraction and centrifugation, and taking an upper solution, thereby obtaining the curcumin. According to the method, a solvent system combining a deep eutectic solvent (DES), pectinase and terpilenol is adopted, extraction and enrichment of curcumin in turmeric can be achieved through a simple one-step method, the process is greatly simplified, recycling and reutilization of reagents are achieved, and compared with an existing extraction method, the extraction method has the advantages of being easy to operate, green, environmentally friendly, high in yield and the like. The method is short in extraction time, low in production cost and suitable for large-scale industrial production.

The invention relates to an extraction method of oat bran protein, which comprises the following steps: mixing HBD and HBA according to different molar ratios, and carrying out magnetic stirring until a clear and transparent liquid is formed; the preparation method comprises the following steps: cleaning oat with deionized water, drying at 40 DEG C until the water content is 10%, crushing, sieving with a 60-mesh sieve, and taking an oversize product of the 60-mesh sieve as oat bran; the preparation method comprises the following steps: mixing oat bran and n-hexane (g / ml) according to a ratio of 1: 5, magnetically stirring for 3 hours at room temperature at 600 rpm, centrifuging for 10 minutes at 4000 rpm, degreasing for 3 times, and naturally volatilizing and airing to obtain degreased oat bran; mixing the degreased oat bran and the DES solution in a vortex manner according to a solid-to-liquid ratio of 1: 10, stirring for 60 minutes at the temperature of 50 DEG C and at the speed of 600rpm, cooling to room temperature, and centrifuging for 10 minutes at the speed of 3500rpm; taking the supernatant, extracting the precipitate twice by using the fresh DES in the same extraction process, merging the obtained supernatant, filling the merged supernatant into a dialysis bag, dialyzing at the temperature of 3,500 D4 DEG C for about 3 days by molecular weight closure, and freeze-drying the obtained suspension to obtain crude protein powder.

The invention discloses a method for extracting shrimp oil from penaeus vannamei boone processing by-products, which specifically comprises the following steps: freeze-drying penaeus vannamei boone heads, crushing into powder, adding absolute ethyl alcohol in proportion, and carrying out ultrasonic extraction and solid-liquid separation to obtain a solid matter and a supernatant A; and evaporating and concentrating the supernate to obtain the penaeus vannamei oil with high extraction rate. The extraction rate is more than 95%. The method provided by the invention not only improves the extraction rate of shrimp oil from South America white, but also greatly shortens the extraction time.

The invention discloses a method for extracting chitin from shiitake mushroom residues by using an ultrasonic-assisted deep-eutectic solvent, which belongs to the technical field of polysaccharide extraction and comprises the following steps: preparing dried shiitake mushroom powder, preparing the deep-eutectic solvent and extracting the chitin. According to the method for extracting the chitin from the mushroom residues through the ultrasonic-assisted deep-eutectic solvent, the natural deep-eutectic solvent serves as the solvent, ultrasonic synergistic extraction is adopted, the chitin extraction rate and the product purity are greatly improved, the extraction efficiency is high, the method is easy to operate, the process is easy to control, and the method is environmentally friendly, low in production cost and suitable for industrial production. A new thought is provided for further utilization of mushroom processing waste resources.

The invention discloses a brassica rapa alkali extract with anti-hypoxia activity as well as a preparation method and application of the brassica rapa alkali extract. The method comprises the following steps: by taking brassica rapa tuberous roots as a raw material, rinsing, slicing, drying, crushing, extracting with a food-grade calcium oxide alkaline solution, carrying out centrifugal separation to obtain supernate, and carrying out spray drying on the supernate to obtain the brassica rapa alkali extract. The method is easy to operate, low in cost and high in extraction rate, starch and crude fiber auxiliary components in the brassica rapa tubers can be removed to a large extent, the most important components with health-care functions of brassica rapa are reserved, and the biological activity of nutritional components of brassica rapa is kept. Results of evaluation and biochemical index determination of a normal-pressure closed experiment and a sodium nitrite poisoning experiment show that the brassica rapa alkali extract can remarkably prolong the survival time of mice, improve the activity of superoxide dismutase in the mice and reduce the content of malondialdehyde, and shows a relatively good hypoxia tolerance effect. The alkali extract can be used for developing hypoxia-resistant functional foods such as tabletted candies and biscuits, and has a wide application prospect.

The invention belongs to the technical field of extraction processes, and particularly relates to a process for extracting auricularia auricula polysaccharide by a compound enzyme-assisted subcritical water extraction method. The method specifically comprises the following steps: performing degreasing treatment on agaric to obtain degreased agaric powder; mixing the degreased auricularia auricula powder with water, then adding cellulose-pectin compound enzyme into the mixture, and performing enzymolysis to obtain an enzymolysis auricularia auricula solution; and carrying out subcritical extraction on the enzymolysis agaric solution to obtain the agaric polysaccharide. The compound enzyme-assisted subcritical water extraction method disclosed by the invention not only effectively shortens the extraction time, but also has the advantages of improving the polysaccharide yield and the polysaccharide biological activity.

The invention discloses a preparation process and application of magnolol-loaded plant exosomes, and relates to the technical field of plant exosomes. Magnolol is extracted from a magnolia officinalis plant material through ultrasonic assistance, the plant exosomes are obtained from fresh ginger by using an ultracentrifugation method, and the plant exosomes are further modified through palmitic acid and polyethylene glycol, so that the magnolol-loaded plant exosomes are obtained. And finally, preparing the magnolol-loaded plant exosome by virtue of an incubation method. The magnolol can be protected from being damaged by gastric acid and digestive enzymes through membrane structure wrapping of the plant exosome, the stability of the magnolol in the digestive tract is improved, and it is further verified through mouse experiments that the magnolol-loaded plant exosome can be beneficial to regulation of intestinal flora.

The invention discloses a compressor air cylinder base grinding device, and relates to the technical field of air cylinder machining and grinding, the compressor air cylinder base grinding device comprises a machining base and further comprises a clamping device, a machining frame is fixedly installed at the bottom of the machining base, a servo motor is fixedly installed on the front side of the machining frame, and a lead screw is fixedly installed at the output end of the servo motor; a moving block is slidably installed on the inner wall of the machining frame and is in threaded connection with the lead screw, the clamping device comprises an electric push rod, a stabilizing plate, a detection rod, a detection plate, an elastic telescopic block, a shielding plate, a button and a limiting hole, the shielding plate moves to break away from contact with the button and release shielding of the button, the clamping force of the stabilizing plate is controlled through limiting, and the clamping force is adjusted to be larger than the clamping force of the limiting hole. Therefore, clamping pressure is uniform and moderate, deformation of the workpiece can be avoided, button shielding can be relieved only after the workpiece is clamped stably, and accidental starting of grinding equipment caused by manual mistaken touch can be reduced.

The invention relates to the technical field of plasma exosome treatment, in particular to a plasma exosome separation and extraction device. The invention aims to solve the technical problems that when an ultracentrifugation method is used for extracting the plasma exosome, the operation is tedious, and the difficulty of operators is increased. According to the technical scheme, the plasma exosome separation and extraction device comprises a centrifugal machine body, the surface of the centrifugal machine body is rotationally connected with a sealing cover through a rotating shaft, and a controller is arranged on the surface of the centrifugal machine body and used for controlling operation in the centrifugal machine. The centrifugal machine has the beneficial effects that the reagent adding mechanism, the sample storage mechanism and the injection mechanism are matched for use, most of tedious operations are replaced by electric programming, an operator is prevented from repeatedly taking out a plasma sample from the centrifugal machine body, the plasma exosome separation and extraction time is shortened, and the operation efficiency is improved. And the operation difficulty of operators is reduced.

The invention relates to a ganoderma lucidum beverage and a making process thereof, and belongs to the technical field of drinks, the making process comprises the following steps: uniformly mixing lactobacillus acidophilus and bifidobacterium bifidum to obtain a mixed bacteria solution; inoculating the mixed bacterial liquid into a culture medium for culturing, and then mixing with a lucid ganoderma extract to obtain a lucid ganoderma active substance; packaging the lucid ganoderma active substance with maltodextrin and beta-lactoglobulin to obtain a lucid ganoderma encapsulated substance; and mixing the ganoderma lucidum encapsulation material, a sweetening agent, a thickening agent and water, homogenizing, sterilizing, cooling and aseptically filling to obtain the ganoderma lucidum beverage. According to the technical scheme, the two probiotics are mixed according to a certain volume ratio, intestinal flora balance can be effectively adjusted, proliferation of bad microorganisms in the intestinal tract can be inhibited, the probiotics and the ganoderma lucidum extract are jointly packaged in a microcapsule system formed by the maltodextrin and the beta-lactoglobulin, the stability of the microcapsule is improved, and the preparation process is simple and convenient. And the prepared ganoderma lucidum beverage has relatively good mouth feel and flavor.

The invention relates to a method for ultrasonic-enhanced extraction of a multicoloured leaf extract by using an ethanol and ethyl acetate cosolvent, and belongs to the technical field of chemical engineering and plant extraction. (2) synergistically degrading cellulose by using multi-component glycosidase; (3) cosolvent extraction; 4, chloroplast pigment is efficiently separated and purified, chlorophyll and other impurities in an extracting solution are effectively separated and removed through silica gel column chromatography, and therefore the high purity of the multicoloured leaf extract is achieved; according to the invention, ethanol and ethyl acetate are used as cosolvents to extract the multicoloured leaf extract, so that the extraction efficiency and the purity of the extract can be improved.

The invention discloses a Fe3O4-COOH (at) ZIF-8-pDA (at) MIPs composite material as well as a preparation method and application thereof. The material comprises carboxyl functionalized magnetic MOFs (Fe3O4-COOH (at) ZIF-8) and a synthesized molecularly imprinted composite material (Fe3O4-COOH (at) ZIF-8-pDA (at) MIPs) loaded on the carboxyl functionalized magnetic MOFs (Fe3O4-COOH (at) ZIF-8). The application of the composite material is that the composite material is applied to pretreatment and enrichment of macrolide antibiotics in an environmental water sample by a magnetic solid phase extraction (MSPE) technology. According to the molecularly imprinted composite material disclosed by the invention, rapid, sensitive and strong-specificity extraction can be realized by using a small amount of adsorbent and sample in a short time, and the molecularly imprinted composite material is economical and applicable. According to the method, the adsorption extraction agent can be screened, designed, regulated and controlled according to the structure of the target analyte, a new thought is provided for analysis of other environmental pollutants, and the method is of great significance to environmental risk assessment, pollutant control and public health.

The invention discloses a method and device for automatically generating a rich text tag and a medium. The method comprises the following steps: acquiring a multi-source rich text data set from multiple preset ways; the rich text data set is input into a pre-trained language model, a text label set of the rich text data set is output, and the language model is obtained by integrating a pre-training model, a machine learning model and a statistical model; and optimizing and filtering the text label set to obtain a final text label of the rich text data set.

The invention relates to the field of agricultural pest control, and discloses a composite pest control agent based on a plant extract as a core. Comprising 15%-25% of honeysuckle extract, 10%-20% of podophyllum hexandrum extract, 15%-25% of camellia peel extract, 10%-20% of wikstroemia indica extract, 10%-20% of senecio scandens extract, 10%-20% of lycoris radiate extract, 1%-3% of a synergist, 5%-10% of an emulsifier and a solvent. According to the invention, a plurality of plant extracts are fused, and effective prevention and control of a plurality of fungi, bacterial diseases and pests are realized through accurate optimization of the ratio. Compared with a current technology which only adopts a single plant extract, the method has the advantages that the comprehensive prevention and treatment efficiency is remarkably improved, the problems of limited prevention and treatment range and poor multi-pest control effect are successfully solved, and the blank in the research and application field of the compound plant extract prevention and treatment agent is filled.

The invention provides a method for detecting environmental pollutants by using a dispersive liquid-liquid microextraction technology. The method is particularly suitable for detecting endocrine disrupters in a urine sample. According to the method, a proper amount of a NaCl solution, a dispersing agent acetonitrile and an extracting agent trichloromethane are added into a urine sample, and target pollutants are rapidly extracted; and after centrifugation and nitrogen blowing drying, redissolving by using a methanol-water mixed solution in a ratio of 1: 1, and finally detecting and quantitatively analyzing through UHPLC (Ultra High Performance Liquid Chromatography). Compared with liquid-liquid extraction and solid-phase extraction, the method has the characteristics of simplicity and convenience in operation, high extraction efficiency and high detection sensitivity, is suitable for detecting bisphenol compounds in various matrixes, conforms to the green chemistry principle, and reduces the use amount of organic solvents. The method can be widely applied to detection and analysis of trace pollutants in environmental samples, and provides reliable technical support for environmental monitoring and pollutant risk assessment.

The present invention belongs to the technical field of food additives, and specifically discloses a high-purity naked oat β-glucan and a preparation method and application thereof. The high-purity naked oat β-glucan is extracted by enzyme-assisted water extraction and alcohol precipitation, and the extract has the function of maintaining moisture stability in cereal products and improving water holding capacity. The high-purity naked oat β-glucan extraction of the present invention is obtained by pretreatment, hot water extraction, enzyme-assisted removal of starch and protein, freeze drying to obtain crude polysaccharides, and crude polysaccharide purification; the example of making cereal bread proves that the high-purity naked oat β-glucan can significantly improve the water holding capacity of cereal products and prolong their shelf life, and can be used in bread, biscuits, and meal replacements to achieve its high-value application.

The invention belongs to the technical field of volatile oil extraction, and particularly relates to an extraction method of antiviral oral liquid volatile oil, which comprises the following steps: weighing medicinal materials according to a prescription proportion, crushing the medicinal materials, mixing, adding into a volatile oil extraction tank, adding ionic liquid, adding distilled water, heating, and separating water and volatile oil to obtain the antiviral oral liquid volatile oil. The method for extracting the volatile oil of the antiviral oral liquid has the beneficial effects that the volatile oil is extracted by adopting an ionic liquid assisted steam distillation extraction method, and compared with a traditional extraction method, the cost is reduced, the operation steps are simplified, and the extraction rate of the volatile oil is improved; by controlling the type and concentration of the ionic liquid and controlling the liquid-material ratio, the heating temperature and the heating time, the extraction rate of the volatile oil is improved, and the activity of antiviral components in the volatile oil is ensured; the feasibility in actual operation is considered when the extraction conditions are optimized, and the method is easier to industrially extract the antiviral oral liquid volatile oil on a large scale.

The invention discloses a deep eutectic solvent for extracting lotus leaf polyphenol and a lotus leaf polyphenol extraction method. The deep eutectic solvent comprises a hydrogen bond acceptor and a hydrogen bond donor, the hydrogen bond receptor comprises at least one of choline chloride, betaine and L-proline; the hydrogen bond donor comprises at least one of lactic acid, maltose, D-glucose, glycerol and urea. The deep eutectic solvent for extracting the lotus leaf polyphenol has the advantages of high lotus leaf polyphenol extraction efficiency, environment friendliness, high safety and the like. The method for extracting the lotus leaf polyphenol has the advantages of high lotus leaf polyphenol extraction efficiency, less degradation, short extraction time, small environmental influence, high application value and the like.

The invention relates to the technical field of text element extraction, in particular to a natural language processing-based text element extraction method, which comprises the following steps of: preprocessing an original text; tagging each vocabulary in the text as the part of speech by using a part-of-speech tagging tool; performing named entity recognition; key words with important significance are identified from the text by using a key word extraction technology; performing syntactic analysis to understand the relationship between words in the sentence and the structure of the sentence; using an emotion analysis technology to identify emotion and attitude expressed in the text; recognizing a theme in the text by applying a theme modeling technology; extracting a relationship between entities in the text; and generating the abstract of the text according to the keyword and sentence importance standard. According to the method, the element with the highest comprehensive score can be quickly calculated through comprehensive processing of the text, so that the extraction efficiency is higher, the extraction time is saved, and better use prospects and commercial values are brought.

According to the decalcification-free trace DNA extraction method for the old bone sample, an independent decalcification step is not adopted, a specific metal chelating agent and a phosphoramidate derivative are introduced into a bone incubation solution, the specific metal chelating agent has high chelating capacity on calcium and magnesium ions, and the specific metal chelating agent and a complex product thereof are high in water solubility and not prone to being separated out; the phosphoramidate derivative is easy to remove and does not affect the DNA adsorption efficiency of the magnetic beads and subsequent PCR amplification, the phosphoramidate derivative preferentially acts with a phosphate group fixed site on the surface of the soil, adsorption of the soil to the DNA is greatly reduced, an incubation product can be obtained to the maximum extent, then soil impurities are removed through centrifugation, and it is ensured that no adverse effect is generated on subsequent DNA adsorption of the magnetic beads. According to the method, trace DNA can be effectively extracted and purified from old bone detection materials, independent decalcification pretreatment is not needed, sample loss is avoided, and the extracted DNA can be used for forensic medicine identification.

The invention belongs to the technical field of plant extraction, and particularly relates to a method for extracting and purifying anthocyanin in vaccinium myrtillus. According to the method, extraction, enrichment and purification are completed in one step through dispersive micro solid-phase extraction, and the method is high in sensitivity, easy to operate, short in extraction time, high in extraction efficiency and low in adsorbent and organic reagent consumption and conforms to the principle of'green chemistry '. Compared with the anthocyanin content only reaching about 30% in the current market, the anthocyanin content obtained through the extraction and purification method exceeds 60%, the yield can reach 90%, the purity of the anthocyanin is high, and the yield is remarkably improved. The method for extracting and purifying the anthocyanin is simple to operate, low in cost and beneficial to popularization and application in production practice.

The invention discloses an extraction device and an extraction method of star anise essential oil, and belongs to the technical field of vegetable oil extraction. The extraction device provided by the invention comprises a round-bottom flask, an air condensation pipe, a distillation head, a condensation pipe, a receiving pipe and a receiving bottle, the opening of the round-bottom flask is connected with the bottom of the air condensation pipe; the top of the air condensation pipe is connected with a bottom end pipe of the distillation head; a side end pipe of the distillation head is connected with the top of the condensation pipe; the bottom of the condensation pipe is connected with the top of the receiving pipe; inserting the tail part of the receiving tube into a receiving bottle; and a polymeric membrane is loaded at the top of the air condensation pipe. According to the extraction device and the extraction method of the star anise essential oil, the problems of long time consumption, large steam consumption and high energy consumption in a traditional extraction process are solved, and meanwhile, the extraction rate of the star anise oil and the extraction rate of the effective component anethole are greatly improved.

The invention provides a method for determining the content of phenolic organic matters in tar residue and phenolic wastewater, which comprises the following steps: optimizing an MRM (Magnetic Resonance Modeling) method based on a GC-QQQ optimizer to obtain an optimized MRM method; detecting mixed standard solutions of phenol, o-methylphenol and p-methylphenol with different concentration gradients by using an optimized MRM method to obtain a linear regression equation corresponding to the characteristic ion flow peak area and the concentration of each compound, and taking the linear regression equation as a quantitative standard curve equation of each compound; the method comprises the following steps: extracting organic matters in a liquid phase and a solid content of coal tar and phenolic wastewater raw materials into an organic phase, and circularly washing the raw materials for multiple times by using an extraction solvent to obtain a to-be-detected organic phase; detecting a to-be-detected organic phase by using an optimized MRM method, and comparing and matching the quantitative ion pair and the qualitative ion pair with compounds in the standard solution to obtain a characteristic peak of the to-be-detected organic phase; and obtaining the content of each compound in the sample to be detected according to the peak area of the characteristic peak of each compound and the quantitative standard curve equation.

The traditional Chinese medicine exogenous pollutant solid phase microextraction device comprises a shell with an opening in the top wall, the top wall of the shell is detachably connected with a top cover, a cavity is formed in the top cover, the top wall of the cavity is fixedly connected with a transmission motor, and an output shaft of the transmission motor is coaxially and detachably connected with a stirring rod; the stirring rod penetrates through the bottom wall of the cavity and extends into the shell, a plurality of groups of first fiber needles are fixedly connected to the side wall, located in the shell, of the stirring rod, first hole channels are formed in the side walls of the first fiber needles, extraction stationary phases are arranged on the inner side walls of the first hole channels, and the extraction stationary phases arranged on the groups of first fiber needles are different; the invention discloses a traditional Chinese medicine extraction device, which is used for solving the problem of low extraction efficiency caused by repeated extraction when various exogenous pollutants in traditional Chinese medicines are extracted by using fiber balls in the prior art to a certain extent.

The invention discloses Longshan lily bulbil polysaccharide as well as a preparation method and application thereof, and belongs to the technical field of plant extraction. In the polysaccharide, the total sugar content is greater than 94%, monosaccharide comprises mannose, rhamnose, glucose, galactose and galacturonic acid in a ratio of (5.12 to 5.48): (7.04 to 7.79): (61.55 to 62.38): (17.37 to 18.14): (7.28 to 7.91), and the weight-average molecular weight is 183916 to 184735 Da. The preparation method comprises the following steps: by taking Lilium brownii Bulb as a raw material, carrying out boiling water enzyme deactivation treatment, decolorizing and degreasing, extracting an alcohol insoluble substance with water, synchronously removing starch by using high-temperature-resistant amylase, carrying out microwave digestion on filter residues obtained after filtering by using a sodium hydroxide solution, dialyzing and extracting an extracting solution, and finally preparing the Lilium brownii Bulb polysaccharide with immunocompetence. The method can be applied to food or functional food or medicine, and provides a thought for high-value application of the Longshan lily.

The invention discloses a black tea concentrated solution and a preparation method thereof. The black tea concentrated solution is obtained by performing flower and fruit mixing and aroma giving on tea raw materials, performing steam vortex aroma extraction, performing steam instantaneous explosion mass transfer treatment, performing steam turbine extraction, performing wall breaking, performing blending, performing high-pressure fusion, performing sterilization and performing filling. According to the method provided by the invention, the extraction efficiency and aroma quality of aroma substances of the tea leaves are improved by utilizing a steam vortex aroma extraction technology; the dissolution rate of effective components in the tea leaves and the content of functional substances are improved by utilizing steam instantaneous explosion mass transfer treatment and steam turbine extraction, and finally, black tea leaf wall-broken powder is added for blending and fusion, so that the produced black tea concentrated solution has the advantages of high flower and fruit aroma, fullness, rich flavor, bright soup color, mellow and rich taste and the like, and has relatively high nutritional and health-care values.