199results about How to "Extract thoroughly" patented technology

The invention relates to a method for preparing tobacco extract and application thereof. The method for preparing the tobacco extract uses tobacco as a raw material to prepare the tobacco extract through the steps of enzymolysis, ultrasonic extraction, filtration, chromatography column separation and concentration under reduced pressure; and the tobacco extract is dissolved by 80 percent ethanol and sprayed into tobacco shreds by adopting an atomizing mode. The method using enzymolysis technology and ultrasonic extraction and combining the chromatography separation has the advantages of low extraction temperature, short time, little using amount of a solvent, full extraction and high raw material utilization rate; because the extraction temperature is low, the damage to thermal-sensitive fragrant substances is reduced, fragrant components of the tobacco self is furthest kept, and simultaneously the substances influencing the taste and mouthfeel are removed; and the method is simple, the equipment is easy to operate, and no pollution is produced.

The invention relates to a method for preparing high-purity rice protein and high-purity rice peptide. Rice or broken rice is used as a raw material in the method; based on crude rice protein prepared by an alkali extraction and acid precipitation method, non-protein substances in the crude rice protein are removed by the impurity removing effect of an efficient composite enzyme consisting of amylase, cellulase and lipase, and then the high-purity rice protein with protein content of more than 90 percent is prepared; and based on the high-purity rice protein, the hydrolysis degree of the rice protein is controlled under the action of the composite enzyme by an alternated enzymolysis ultra-filtration coupling technology, and the high-purity rice peptide with protein content of over 90 percent, polypeptide content of more than 70 percent and 200 to 1,200Da oligopeptide content of over 50 percent is prepared by separation.

The invention discloses a method for extracting citrus pericarp essential oil, which comprises the following steps: selecting fresh citrus pericarps, removing the white pericarp layer until the pericarp thickness is 0.1-0.2cm, mincing, repeatedly freezing and thawing for 2-5 times, preparing a compound enzyme from pectinase and cellulose at a mass ratio of (1-6):1, preparing an enzyme solution, mixing the pretreated citrus pericarp particles with the compound enzyme solution, and performing enzymolysis in a dark place for 5-30min; and performing condensation and reflux extraction of the hydrolyzed citrus pericarps with n-hexane, and removing n-hexane to obtain essential oil. The method disclosed by the invention adopts a physical process of repeated freezing and thawing to conduct initialbreak of cell walls of citrus pericarps, and then performs enzymolysis of the citrus pericarps with the compound enzyme, so as to greatly increase the extraction rate of citrus pericarp essential oil. The method also has the following advantages: the extraction process is simple, the natural fragrance is less damaged, and the use value of the citrus processing byproduct - citrus pericarps - can be utilized to a maximum extent. The essential oil extracted using the method disclosed by the invention has pure texture and has the natural fragrance of citrus fruits.

The invention discloses an extraction method for a natural pigment. The extraction method for a natural pigment comprises the following steps of: (1) washing, drying and crushing raw materials, then passing through a 100-mesh sieve, performing homogeneous extraction in the mixed solution of ethanol aqueous solution in the percentage of 60-95% by volume and hydrochloric acid aqueous solution in the concentration of 0.1 mole per litre, and filtering after the extraction, so as to obtain a filtrate, wherein the pH value of the obtained mixed solution is 2.0-5.0; and the homogeneous extraction comprises a high-speed pre-treatment phase and a homogeneous extraction phase; (2) neutralizing, centrifuging and deslagging the filtrate obtained in the step (1), so as to obtain a supernatant; and (3) concentrating and drying the supernatant obtained in the step (2), so as to obtain the natural pigment, wherein the raw materials are chestnut shells, black soya bean skins, dragon fruit peels, lychee exocarps, grape seeds, hickory exocarps, acorn shells, orange peels, hazelnut shells, nectarine peels and purple sweet potato or purple-black broomcorn shells. The extraction method disclosed by the invention is simple in process, low in requirements on production equipment, not easy to break pigment substances, and high in extraction rate.

The invention discloses a gas chromatography for detection of a phosphate fire-retardant plasticizer in a textile. The gas chromatography comprises the following steps of 1, preparing a test sample solution which is supernatant, 2, preparing a gradient standard solution having the concentration of 1 to 10 micrograms per milliliter by dissolving at least one phosphate fire-retardant plasticizer in a solvent, 3, injecting the gradient standard solution into a gas chromatograph, carrying out detection by a flame photometric detector to determinate peak positions of the at least one phosphate fire-retardant plasticizer, recording corresponding peak areas, and making a standard curvilinear equation by concentrations as horizontal coordinates and the peak areas as vertical coordinates, and 4, replacing the gradient standard solution used in the step 3 with the supernatant obtained by the step 1, detecting the at least one phosphate fire-retardant plasticizer in the test sample solution and the peak areas of the at least one phosphate fire-retardant plasticizer according to the step 3, and carrying out calculation by the standard curvilinear equation obtained by the step 3 to obtain the content of the at least one phosphate fire-retardant plasticizer in the test sample solution.

The invention discloses a regenerative device and method for desulfurized and denitrified active coke. The regenerative device comprises a regenerative reactor, wherein the regenerative reactor is composed by the connection of an inlet blocking valve, a feeding bin, a heating bin, a regenerative bin, a precooling bin, a cooling bin, a discharging bin, and an outlet blocking valve in sequence; a heating heat exchanger component is arranged in the heating bin; a precooling heat exchanger component is arranged in the precooling bin; a cooling heat exchanger component is arranged in the cooling bin; a nitrogen carrying bin for inletting ammonia nitrogen gas to improve the desulfurization and denitrification performances of regenerated active coke during regeneration process is arranged between the precooling bin and the cooling bin. The regenerative method adopts the regenerative device to conduct the regeneration of the active coke. According to the invention, more reasonable utilization of energy can be realized in the regeneration process to allow the desulfurization and denitrification performance of the regenerated active coke to obtain further improvement; on-line modification can be conducted on the active coke through the nitrogen carrying bin to keep high desulfurization and denitrification performance of the active coke.

The invention relates to the technical field of traditional Chinese medicine extraction, and relates to a method for extracting flavonoid glycoside compounds in herba epimedii, in particular to a method for extracting flavonoid glycoside compounds in epimedium leaves with a deep eutectic solvent. According to the preparation method, the flavonoid glycoside compounds are extracted from the raw material of herba epimedii with the deep eutectic solvent, particularly a choline deep eutectic solvent, as an extracting agent and water as a diluent for reducing the system viscosity under ultrasonic enhancement. The extraction method has higher extraction efficiency for flavonoid glycoside components, is more thorough in extraction and has the extraction efficiency close to 100%. The method is mildin extraction condition and convenient to operate, has the characteristics of no blast or volatilization of the extracting agent, low loss, low energy consumption and the like and can be applied in efficient and green large-scale production of the flavonoid glycoside compounds and comprehensive utilization of the herba epimedii resource.

The invention discloses a rose-flavored beauty cookie. The rose-flavored beauty cookie is made from 40-50 parts of wheat flour, 15-25 parts of salad oil, 5-7 parts of milk powder, 4-7 parts of dried Roselle calyx powder, 1-2 parts of Chinese hawthorn seed powder, 1-2 parts of red date powder, 3-5 parts of black rice flour, 1-2 parts of membranous milkvetch root powder, 5-7 parts of cassava starch, 1-2 parts of black tea powder, 8-10 parts of xylitol, 3-6 parts of bee honey, 1-2 parts of baking powder, 0.8-1.2 parts of soda, 1-2 parts of edible salt, 0.2-0.4 part of xanthan gum, 1-2 parts of ginseng powder, 0.8-1.2 parts of angelica root powder, 1-2 parts of tall gaterpillar fungus powder, 2-4 parts of pine pollen powder, 0.4-0.8 part of wine-stained rose petals, 5-8 parts of beauty TCM (traditional Chinese medicine) filtrate, and the proper amount of water. The rose-flavored beauty cookie tastes good and has unique attracting wine and rose flavor, the wine is anti-aging, the rose petals soaked with the wine are beauty-care and moisten gastrointestinal tracts, the nutrition of the rose-flavored beauty cookie is enriched by using the rose petals with other raw materials, and accordingly the rose-flavored beauty cookie has the effects of antioxidation, blood replenishing, qi tonifying and the like. Dietetic beautification is achieved through the rose-flavored beauty cookie.

The invention provides a method and a system for extracting leaf growth parameters of fruit trees based on clustering segmentation, the method comprising the following steps: superclustering the pointcloud data of the canopy branches and leaves of a target fruit tree, and performing LCCP clustering on a plurality of adjacent voxel blocks in the obtained voxel block set to obtain a first clustering set; applying Kmeans clustering to any point group in the first clustering set to obtain the second clustering set; according to the point cloud data corresponding to each point group in the secondclustering set, obtaining the growth parameters of each leaf based on boundary extraction. After LCCP clustering is used to segment the point group obtained by superbody clustering, and the Kmeans clustering algorithm based on dynamic K-value is further adopted. The improved clustering Kmeans algorithm can automatically obtain the K value, the shortcoming of manual setting the K value in the traditional algorithm is overcome, the point cloud data segmentation of the canopy branches and leaves of the target fruit trees becomes more complete and more thorough, and then extracted leaf growth parameters are more accurately.

The invention discloses a common-pressure herb-decocting machine with an internal vacuum condensing device and a condensing cover, which is characterized in that a herb-decocting barrel is provided with a circular C-shaped herb basket inside, a vacuum concentrating tank in the center and a sandwiched cooling cover with a feeding opening and a concentrating water collecting tank at the top. When herbs are decocted, water vapor is condensed and collected in the concentrating water tank of the sandwiched cover and can be added to the herb-decocting barrel as secondary decocting water, first decocting liquid medicine is extracted into the vacuum tank through a feeding ball valve with a filter screen at the bottom of the vacuum concentrating tank for reducing pressure and rapidly concentrating, and the feeding ball valve is controlled by a steering handle to open and close. Residual liquid medicine in herb residues can be relatively fully extracted in the vacuum concentrating tank without squeezing, and the size of the liquid medicine in the concentrating tank can be intuitively read through the herb-decocting barrel, a notch of the C-shaped herb basket and a scale window of the vacuum concentrating tank for quantificationally concentration. The invention not only saves energy, but also increases the concentration speed of the liquid medicine, reduces the taking volume and lessens the damage of effective contents.

The invention discloses a method for extracting purely natural plant organic selenium. In the specific method, smashing and soaking in clear water are performed, so that plant selenium can be better dissolved out. Heating and extraction are performed on the basis. Compared with the prior art, a product or the method disclosed by the invention has the advantages of more complete extraction, lower time consumption and relatively saving in water. A process for soaking in clear water for 30 minutes and a process for extracting with stirring at the temperature 80 DEG C for 1 hour are performed, so that 80 percent of plant selenium in a plant can be extracted by extracting with stirring at the temperature 90 DEG C for 1 hour.

The invention discloses a composition having a function of improving sleep and a preparation method thereof. The composition comprises the following components in parts by weight: 480-516 parts of a blackcurrant extract, 215-236 parts of anthocyanin, 90-110 parts of a maca extract, 190-205 parts of malotuonin, 180-200 parts of activated carbon, 28-35 parts of coenzyme Q10, 75-85 parts of linolenic acid, 10-12 parts of vitamin A, 18-23 parts of zinc gluconate, 25-30 parts of vitamin B6, 12-17 parts of vitamin B12, 5-8 parts of vitamin D and 120-150 parts of magnetized water. Active ingredients of maca and saw palmetto fruits are extracted under assistance of a fluid gyro-magnetizing device, and through magnetization, the liquid is stronger in surface tension, seepage force and solubility, so that active ingredients can be extracted more thoroughly compared to a normal extracting method which fails to extract or is low in extracting rate; therefore, the composition is more abundant in nutrient ingredients, easier to be absorbed and more obvious in effect of improving sleep.

The invention provides an extraction method of dendrobium huoshanense polysaccharide, and in particular relates to a method for extracting dendrobium huoshanense polysaccharide by an ultrasonic wave assistance hot reflux extraction method. According to the extraction method, the extracted polysaccharide is subjected to content detection by a phenol-sulfuric acid method. After the primary impurity removal through diethyl ether addition into dendrobium huoshanense coarse powder, a proper amount of methyl alcohol is added; after ultrasonic wave assistance hot reflux extraction, filtering is performed when the liquid is still hot; washing is performed; filtering residues are put into a flask; a proper amount of water is added; then, ultrasonic wave assistance hot reflux extraction is performed again; filtering is performed when the liquid is still hot; the operations are repeated for four times; obtained filter liquid and washing liquid are merged; through rotary evaporation, a target product, namely the dendrobium huoshanense polysaccharide is obtained. The extraction method of the dendrobium huoshanense polysaccharide provided by the invention has the advantages that the content of the obtained polysaccharide is high; the extraction time is short; the extraction is thorough; the extraction method is suitable for industrial application.

The invention provides an infrared image pedestrian target detection method based on improved YOLOv5, and the method comprises the following steps: expanding and iterating a shallow CSP module of a feature extraction network, adding an improved attention module into a residual block, adding a multi-scale target detection layer, downloading and processing a KAIST data set, and constructing a training set, a verification set and a test set for model training; finally, sending the preprocessed KAIST data set into the constructed infrared pedestrian target detection model based on the improved YOLOv5 to carry out model training, testing and evaluation. In the model construction stage, the expanded CSP and the introduced attention mechanism are more beneficial to extraction of pedestrian features, and the added detection layer is beneficial to detection of long-distance small targets. In the training stage, infrared images which do not contain pedestrian targets in a sent data set are deleted, so that model training is prevented from being interfered, and network convergence is accelerated. In the evaluation stage, the accuracy and the speed of the model are optimized by adjusting the width and the depth of the model so as to meet the requirements of practical application.

The invention provides a preparation method of oligopeptide powder of marine-fish collagen and application thereof. The preparation method comprises the following steps: adopting marine-fish skin as araw material, and adopting a method of mixing acidolysis and enzymolysis to prepare the oligopeptide powder with the oligopeptide content being higher than 96%. The oligopeptide powder can be widelyapplied to the fields of functional food and medicine industries such as the wine industry, the beverage industry, the seasoning industry, the health-care industry, the oral liquid, tablets and capsules.

The invention discloses a cough-relieving Chinese medicinal composition and a preparation method thereof. A conventional prescription, namely, a cough-relieving medicament is subjected to modern extraction and preparation processes, such as hot reflux, double effect evaporation, spray drying and the like to prepare extract and the extract is prepared into a corresponding formulation. The preparation method has the advantages of extracting medicinal materials by a more reasonable process, greatly improving production efficiency, completely extracting active ingredients compared with the conventional process of cough-relieving tablets and enhancing the quality of the medicament, so that the method can bring medicament effect into full play and be widely applied to clinical work in a better way.

Provided is a detection method of the content of an acrylamide monomer in paper and paper products. The detection method comprises following steps: preparing an acrylamide standard solution, drawing a standard curve after HPLC analysis, weighing a certain amount of a paper sample, adding distilled water or a methanol aqueous solution for extraction, enabling an extract to pass through a solid-phase extraction column, and obtaining the content of the acrylamide monomer in the paper sample through HPLC analysis according to the standard solution. In the method, water or the methanol aqueous solution is employed as an extraction reagent so that a measuring precision and detection efficiency are greatly increased.

A Chinese medicine in the form of spray for treating orthopaedic diseases is prepared from 14 Chinese-medicinal materials including Dragon's blood, myrrh, notoginseng, safflower, etc.

The invention discloses an extraction process for grape-skin pigment. The extraction process for grape-skin pigment comprises the following steps of: (1) mixing dried grape-skin powder with 95 wt% ethanol, adjusting the pH value to 2-4 by citric acid aqueous solution, performing high-speed pre-treatment and homogeneous extraction at a room temperature, and filtering; (2) mixing the filter residue obtained after filtering with 95 wt% ethanol, adjusting the pH value to 2-4 by citric acid aqueous solution, performing homogeneous extraction again, and filtering; and (3) centrifuging the filtrate, collecting the supernatant, freeze-drying the supernatant into a powder, namely, the grape-skin pigment, wherein the high-speed pre-treatment is performed for more than 5 minutes at a speed of 5000-10000 r / min; and the homogeneous extraction is performed for more than 10 minutes at a speed of 1000-4000 r / min. The invention further discloses the grape-skin pigment prepared by the process. The extraction process disclosed by the invention is simple, low in requirements on production equipment, high in extraction efficiency, greatly shortened in extraction time, and obviously superior to the traditional solvent extraction method. The obtained grape-skin pigment is good in water solubility, good in appearance colour, stable in character, and suitable for use as a food additive or a healthcare food raw material.

The invention discloses a method for detecting transfer volume of phosphate ester plasticisers in acid sweat in textile. The method comprises the following steps: utilizing a to-be-tested sample to establish a transfer system so as to obtain a transfer liquid; utilizing the transfer liquid to prepare a to-be-tested sample solution so as to obtain a supernatant liquid; preparing the phosphate ester plasticisers into a gradient standard solution; injecting both of the gradient standard solution and the supernatant liquid into a gas chromatograph or a gas chromatograph-mass spectrometer, and performing flame photometry detector testing or selected ion monitoring mode testing so as to obtain the content of the phosphate ester plasticisers in the supernatant liquid; finally obtaining content of the phosphate ester plasticisers in the to-be-tested sample. The phosphate ester plasticisers are triphenyl phosphate, tri-ortho-cresyl phosphate, cresyl phosphate, tri-o-cresyl phosphate, tributyl phosphate, trioctyl phosphate, dpof diphenyl octylphosphate, cresyl diphenyl phosphate isomer CDP I and cresyl diphenyl phosphate isomer CDP II.

The invention discloses a separation method for alkali nitrogen compounds in coal liquefaction oil. The separation method comprises the following steps of: acid pickling: mixing the coal liquefaction oil with an acidic solution, carrying out vibrating, standing and layering, and separating to obtain a water phase solution; and organic solvent extraction: regulating the pH value of the water phase solution to be 8-10, adding organic solvents after cooling, carrying out mixing, vibrating, standing and layering, and separating to obtain an organic phase solution rich in the alkali nitrogen compounds. By utilizing the separation method disclosed by the invention, the alkali nitrogen compounds in the coal liquefaction oil are processed by utilizing an acid pickling method and an organic solvent extraction method, the effects that the alkali nitrogen compounds in the coal liquefaction oil are good in separation selectivity and high in separation degree and are thoroughly extracted are achieved, and the obtained organic phase solution can be directly used for carrying out sample injection analysis on the alkali nitrogen compounds.

A sample preprocessing method for detecting lemon bitter principle compound content in citrus skin and seed includes drying and grinding detected sample to be 60 ¿C 80 mu, adding 2 ¿C 5 ml organic solvent into ground sample of 0.2 ¿C 0.5g, oscillating and extracting it for 2 ¿C 3 min. then centrifuging it for 5 ¿C 10 min. to absorb off top clear liquid; adding acetone of 2 ¿C 5ml, extracting and oscillating it for 2 ¿C 3 min. then centrifuging it for 5 ¿C 10min. to collect acetone extractive; adding 1¿C2ml of organic solvent into extractive, oscillating it then centrifuging it for 5 ¿C 10min to collect solution for fixing volume and detecting.

The invention belongs to the field of household appliances and discloses a juicing method and a juice extractor. The juice extractor comprises a fruit container and a cover located above the fruit container, wherein a motor and a high-pressure water sprinkler are arranged in the cover, the motor can drive a screw in the fruit container to propel a cutter to rotate, a negative pressure chamber is arranged below the fruit container, and the fruit container is communicated with the negative pressure chamber through an adjustable filter net on the bottom of the fruit container via a guide port. The screw is used for propelling the cutter for smashing and squeezing; the negative pressure chamber is arranged below the fruit container, extracted juice in the fruit container is sucked into the negative pressure chamber through negative pressure in the negative pressure chamber, and in this way, juice extraction is more thorough compared with a rotary centrifugation method; the cutter is driven by the screw to cut and squeeze vegetables and fruits, manual operation is not needed, and juice extraction efficiency can be improved; the fruit container can be cleaned by means of the high-pressure water sprinkler and the negative pressure chamber, so that cleaning is more convenient and faster.

The invention provides a squeezing system and squeezing process for a high-salt liquid sauce, belonging to the field of squeezing of sauces. The squeezing system is characterized by comprising a sauce mash squeezing system, a pneumatic system and a water-circulating pipe system, wherein the sauce mash squeezing system is connected with a feed inlet of an isobaric tank through an underflow pump, a discharge outlet of the isobaric tank is connected with a feed inlet of a membrane plate-type filter press, discharge outlets of the membrane plate-type filter press are separately connected with a salt dissolving pond and an oil storage tank, the salt dissolving pond is connected with the oil storage tank through a material pump, an air compressor of the pneumatic system is connected with the air inlet of the isobaric tank, water storage tanks of the water-circulating pipe system are separately connected with a high-pressure pump and a low-pressure pump, the high-pressure pump is connected with a membrane plate water filling port of the membrane plate-type filter press, and the low-pressure pump is connected with the discharge outlet of the membrane plate-type filter press. The squeezing system provided by the invention needs low investment; the squeezing process is excellent; high production efficiency and high crude oil removal quality are obtained; and labor intensity of workers is low.

The invention discloses an orange juice squeezing device, and belongs to the field of juice squeezers. The orange juice squeezing device comprises a clamping assembly, a cup bin assembly and a cutting knife, wherein the cutting knife is of a hollow structure; a drainage runner communicated with the middle of the cutting knife is arranged at the lower part of the cutting knife; flow guide disks are arranged on the two side surfaces of the cutting knife; the cup bin assembly comprises a cup bin for accommodating a cup; a sealing door assembly hermitically connected with the cup bin is arranged outside the cup bin; a vacuumizing connection port is formed in the sealing door assembly; the clamping assembly can press an orange cut into two pieces and enable the two orange halves to be attached to the flow guide disks on the side surfaces of the cutting knife. According to the orange juice squeezing device, by the comprehensive use of the squeezing and vacuum juice absorption principles, due to the specially made cutting knife and the clamping assembly, the orange cut into two pieces is pressed and attached to the hollow cutting knife, and then the cutting knife is vacuumized and cooperate to squeeze the orange to extract juice, so that impurities outside an orange peel are prevented from entering the juice, and the obtained orange juice is safe and sanitary; furthermore, by vacuum squeezing, very few pomace is brought into the juice, and fruits can be squeezed thoroughly.

The invention discloses a preparation method of a mulberry red pigment. The preparation method comprises the following steps: (1) mixing dried mulberry powder with ethanol (95 wt%), adjusting the pH value of the solution to 2-4 by a critic acid water solution, carrying out high speed pretreatment at a room temperature, homogenizing, extracting, and filtering; (2) after filtering, mixing the dregs with ethanol (95 wt%), adjusting the pH value to 2-4 by a critic acid water solution, homogenizing, extracting, and filtering; (3) subjecting the filtrate to centrifugation, collecting the supernate, and freeze-drying the supernate to obtain powder, namely the mulberry red pigment. The preparation method is simple, the requirements on equipment are low, the extraction efficiency is high, the extraction time is largely shortened, and the provided method is obviously better than the conventional solvent extraction method. Moreover, the obtained mulberry red pigment has the advantages of high water solubility, beautiful appearance and luster, and stable property, and can be used as food additive and raw material of healthcare product.

The invention discloses a method for extracting protein from azolla filliculoidas and drink made by utilizing the extracted protein. The method sequentially comprises the following steps: pretreatingazolla filliculoidas, and squeezing into azolla filliculoidas juice and residue mixture; carrying out enzymatic reaction on the azolla filliculoidas juice and residue mixture; carrying out heat treatment on the azolla filliculoidas juice and residue mixture; carrying out centrifugal treatment on the azolla filliculoidas juice and residue mixture by utilizing a high-speed freezing centrifuge, and removing residues in the azolla filliculoidas juice and residue mixture, so that clear liquid is obtained; adding trihydroxymethyl amino methane buffer solution into the clear liquid, and carrying outsolution treatment on the clear liquid, so that precipitation solution is obtained; and carrying out dialysis on the precipitation solution, so that the protein finished product is obtained. The method for extracting the protein form the azolla filliculoidas has the advantages that the solution treatment is carried out on the clear liquid, proteins in the clear liquid can be precipitated and crystallized, and further dialysis treatment is carried out on the precipitation solution, so that the protein is extracted more thoroughly.

The invention particularly relates to a method for recovering rare earths from vacuum-calcium-thermic-reduction rare-earth slag. The method comprises the following steps: (1) uniformly mixing sodium silicate and vacuum-calcium-thermic-reduction rare-earth slag powder; (2) roasting the mixture obtained in the step (1) in a high-temperature furnace; (3) leaching the roasting slag obtained in the step (2) with water, and then, carrying out filtrating and baking; and (4) putting the baked roasting slag in a hydrochloric solution, and carrying out filtrating, thereby obtaining a rare earth containing filtrate. By adopting the sodium silicate roasting-acid dipping method, the rare earths are efficiently and thoroughly extracted from the calcium-thermic-reduction rare-earth slag, the maximum leaching rate exceeds 99% and is greatly superior to treatment effects of the current processes, the process is simple, and operation is facilitated.

The invention discloses a grape skin pigment extraction technology. The technology comprises the following steps: 1, mixing dried grape skin powder with 95wt% ethanol, adjusting the pH value of the above obtained solution to 2-4 by using an aqueous citric acid solution, carrying out high speed pretreatment at room temperature, homogeneously extracting, and filtering; 2, mixing filter residues obtained after the filtration with 95wt% ethanol, adjusting the obtained solution to 2-4 by using the aqueous citric acid solution, homogeneously extracting, and filtering; and 3, centrifuging the obtained filtrate, collecting the obtained supernatant, and freeze-drying to obtain powder in order to obtain a grape skin pigment. The high speed pretreatment is carried out under 5000-1000rpm for above 5min, and the homogeneous extraction is carried out under 1000-4000rpm for above 10min. The invention also discloses the grape skin pigment obtained through the technology. The extraction technology has the advantages of simplicity, low requirements on a production device, high extraction efficiency, and great shortening of the extraction time, is obviously better than traditional solvent extraction methods. The obtained grape skin pigment has the advantages of good water solubility, good appearance color and stable properties, and is suitable for being used as a food additive and a health food raw material.

The invention discloses veterinary liquorice particles, which are more convenient to store and transport. The veterinary liquorice particles are prepared from the following components in parts by weight: 170-200 parts of liquorice extractum (containing 1000 parts of crude drugs), 50-80 parts of polyvinylpyrrolidone, 50-80 parts of hydroxy propyl cellulose and 100-150 parts of maltodextrin. Cane sugar is added to the components to reach 1000 parts. The preparation method of the liquorice particles comprises the following steps: carrying out low-temperature reflux extraction on the liquorice crude drugs, and adding the polyvinylpyrrolidone, the hydroxy propyl cellulose, the cane sugar and the like; and pelletizing and drying, so as to obtain the liquorice particles, which are high in effective ingredients, stable in ingredients, not easy to absorb moisture, good in stability and long in storage time.