240results about How to "Low extraction rate" patented technology

Dosage forms and drug delivery devices suitable for administration of pharmaceutical compounds and compositions, including the oral drug administration of compounds.

The invention discloses a method of using wet phosphoric acid to prepare industrial grade phosphoric acid, food grade phosphoric acid and industrial ammonium diacid phosphate, which is characterized in using wet phosphoric acid as the material, and preparing industrial grade phosphoric acid and food grade phosphoric acid respectively by using a series of compound purifying technologies such as chemical sedimentation and extracting by organic solvent and concentration and recrystallization and other technologies; meanwhile, the invention uses a part of purified diluted phosphoric acid to prepare industrial ammonium diacid phosphate. The invention has the advantages of reasonable cascade utilization of the wet phosphoric acid, high additional value of phosphorus, and further exploitation of the lower industrial and food grades phosphate.

A method for delivering a long coffee extract from a capsule containing ground coffee within a flow time of 50 seconds or less by injection of water under pressure within the capsule. The capsule is filled with ground coffee and has a delivery membrane. The capsule is extracted in a coffee extraction device, and pressurized water is injected in the capsule under pressure. The coffee beverage is released through the beverage delivery membrane of the capsule with engaging means engaging in and / or against the membrane. The pressure loss is reduced in the coffee bed by providing in the capsule coffee ground having a controlled percentage of fines (F) depending on the average particle size (D4,3). The flow time can be lowered to 40 seconds or even less while maintaining a coffee extraction yield within a high range of 15 to 30%.

The invention relates to a method for extracting and purifying anthocyanins from blueberry pomaces. The method comprises the following steps of: mashing blueberries, separating pulps from pomaces, sequentially carrying out enzymolysis, separation, ultra-filtrated impurity removal, nanofiltration concentration and macroporous resin purification on the obtained object, recovering ethanol and an intercepting liquid through nanofiltration, and carrying out freeze drying on the intercepting liquid so as to obtain claret-colored blueberry anthocyanin powder, wherein the anthocyanins content of the blueberry anthocyanin powder is 50-90%. According to the invention, the added value of blueberry resources is improved; the process is not only simple, but also low in operating cost, therefore, the process is suitable for the large-scale production of anthocyanins; the whole process adopts a physical method, no poisonous and harmful solvents are adopted, and the energy consumption is low, therefore, the method effectively protects the environment; and medium-temperature (25-55 DEG C) enzymolysis is adopted, thereby maximumly keeping that anthocyanins not destroyed.

The invention provides a low alcohol grape wine and the brewing technology thereof, belonging to the technical field of grape wine preparation. The aim of the invention is to provide a brewing technology of high concentration low alcohol (8-10 percent of alcohol degree) grape wine. Under the premise that the grape wine made by the brewing technology meets the technical indicators of high concentration and low alcohol, the brewing technology does not influence the flavor and the characteristics of the grape wine.

Belonging to the field of green tea polyphenol extraction processes, the invention discloses a preparation process for extracting green tea polyphenols from tea. The preparation process includes the following six steps: pretreatment of tea, nitrogen protection, ultrasonic extraction, separation and filtration, resin adsorption, concentration and drying. The process provided by the invention solves the problems of serious destruction of effective components, low product yield and purity, high production cost and pollution in existing green tea polyphenol extraction. The preparation method disclosed in the invention not only has the advantages of high recovery rate, time saving, high extraction rate and the like, but also avoids the use of toxic solvents, and is conducive to reducing energy consumption and lowering the production cost, thus having good industrial promotion value.

The invention discloses a method for preparing lycium barbarum lutein by HSCCC (high-speed countercurrent chromatography) separation. The method mainly comprises the following steps: grinding and extracting lycium barbarum berry, concentrating extract, saponifying, eluting and dissolving, and carrying out HSCCC separation to obtain a lycium barbarum lutein solution; concentrating, and freeze-drying to obtain a lutein pure product of which the purity is over 90.6 percent by means of HPLC analysis and detection. According to the method, a methanol and tetrahydrofuran composite solvent is adopted for ultrasonic extraction, and a saponification technology is combined and synergized with HSCCC, so that the problem that main carotinoid lutein and zeaxanthine in lycium barbarum belong to isomers and are difficult to separate can be successfully solved; autumn berry of lycium barbarum is utilized as a raw material, so that the production cost is greatly reduced, effective separation of lutein and zeaxanthine can be successfully realized by repeatedly regulating the solvent proportion in the counter-current chromatography separating and purifying phase, a high-purity lutein monomer can be obtained, and a new thought is provided to implementation of separating and purifying lutein from lycium barbarum and implementation of industrial production.

The invention relates to a method for coproduction of rice starch and rice protein. The method comprises the step of pretreatment of raw materials, first mixing and enzyme reaction, first separation and washing, homogenization, second separation and washing, second mixing and enzyme reaction, third separation and washing, drying and the like. The method disclosed by the invention is used for realizing the coproduction of the rice starch and the rice protein. In the rice starch produced by the method disclosed by the invention, the content of protein is below 0.3%, the content of starch is above 96%, the dextrinization rate of the starch is below 2.5%, the extraction rate is above 90%, the degree of hydrolysis of the rice protein is below 10%, the content of the protein is above 90% and the extraction rate of the rice protein is above 85%. The rice starch produced by the method disclosed by the invention can be widely applied to the industries such as foods, medicines and cosmetics, while the rice protein can be widely applied to the fields of health foods, nutritious foods and the like, and the additional value of deep processing of rice is increased greatly.

The invention discloses a method of adopting simultaneous distillation and extraction technology to extract volatile oil in agilawood leaf.The method includes that two steps of agilawood leaf water solution distillation and solvent extraction are combined into one.Most steps in the method are performed in a simultaneous distillation and extraction device, so that the method is simple, convenient and practical in operation and easy in industrial production.Steam of agilawood leaf volatile oil and dichloromethane steam come across above the simultaneous distillation and extraction device and fully contact, extracting of the agilawood leaf volatile oil from the steam into the dichloromethane steam is facilitated, reducing of solvent consumption is facilitated, damage to and volatilization of active ingredients in the volatile oil are prevented, and value of extract is guaranteed.

The invention relates to an extraction method of tea polyphenol, in particular to an efficient and safe tea polyphenol extraction technique free of a heat source and free of an organic solvent. The method comprises the following steps: with fresh leaves as a raw material, cooling, carrying out enzyme deactivation, pulping, soaking, squeezing and filtering to prepare tea polyphenol extract liquid; purifying the tea polyphenol extract liquid by the procedures of high-speed centrifugation, refined filtration, ultrafiltration membrane filtration, reverse osmosis membrane concentration, lignocellulose chromatography and spray drying. The extraction rate of the tea polyphenol which is coarsely extracted from fresh leaves is over 76%; and the purity of the purified catechinic acid powder is 62%.

The invention discloses a preparation method of a subcritical raisin extract and an application of the subcritical raisin extract in cigarettes. The subcritical raisin extract is characterized by being prepared by the following method: pretreating raw materials and extracting at an extraction pressure of 0.5MPa to 3MPa at the temperature of 0-50 DEG C by taking butane, propane or dimethyl ether as a subcritical extracting solvent, wherein an entrainer used is 55% to 95% ethanol. After being added with the subcritical raisin extract, cigarette shreds are free of peculiar smells in smoke and harmonious in fragrance; due to the subcritical raisin extract, the fragrance quality and the smoke fineness and tenderness of the cigarettes are both improved; the fragrance amount of the cigarettes is increased; impurity gas and irritation of the smoke are reduced; the overall smoking quality of the cigarette is improved. The most prominent characteristics of the subcritical raisin extract prepared by the method disclosed by the invention are that the subcritical raisin extract prepared by the method can be used as a cigarette additive, the application of the additive does not change the original performances and processing technique of the cigarettes, the fragrance quality of the cigarettes is improved and the sensory comfort degree of the cigarettes is increased, so the subcritical raisin extract has better significance and value for actual production.

The invention relates to a production method for extracting lignite wax from brown coal. The production technology comprises the steps of (a) multi-stage countercurrent pulse extraction; (b) negative-pressure countercurrent film evaporation; and (c) negative-pressure distillation concentration, wherein an extraction solvent in the step (a) is mixed solution of methanol to industrial n-hexane, of which the solvent mass ratio is (0.5-0.8):1; and the mass ratio of the extraction solvent to the brown coal is (1.5-1.8):1. By adopting the production method, the yield of the lignite wax is greatly improved; large-scale and industrial production is achieved; the problems of large solvent input and low extraction yield in industrial production of the lignite wax are solved; and the production method is free of environmental pollution, and low in production cost, is an innovative technology of extracting the lignite wax from the brown coal, and has great economic benefit and social benefit.

The invention relates to a method for extracting purified anthocyanin from purple sweet potatoes. The method comprises the following steps of cleaning the purple sweet potatoes, dicing, rough grinding and fine grinding into pulp, extracting at a constant temperature, carrying out solid-liquid separation to remove most of starch and the like, removing macromolecules in a solution by an ultrafiltration membrane, and preliminarily purifying; then further purifying filtrate by macroporous resins, eluting with deionized water and ethanol sequentially to obtain eluate, namely a purified solution of anthocyanin, concentrating the purified solution by a nanofiltration membrane, recovering ethanol, and vacuum freeze-drying to obtain anthocyanin powder. The content of anthocyanin is 50%-98%. The extraction agent used by the invention is water, pollution-free chemical reagents are used in the extraction process, the membrane and macroporous resins are adopted in the crude extraction and purified extraction and the ethanol is recyclable, thereby reducing pollution; anthocyanin is not destroyed to the maximum extent by medium-temperature extraction, the starch removal by a disc centrifuge, and other processes and anthocyanin is not oxidized via a vacuum freeze-drying method.

This invention relates to a technical proposal of producing lactic acid by deep layer fermentation, that is the proposal of extracting lactic acid from fermentation liquor. The features are that desugarization and decoloration are done by using granular active carbon and H-103 resin column. Two times consumption of heat is adopted, that is the temperature reduces from 300C to 15, then from 150C to 40C, and calcium lactate is extracted through once crystallization. The loss of lactic acid is much reduced and the technology continuance is realized by this invention. The extraction rate and purity are raised, the percent crystallinity can reach 80%, purity 97.2%, the extraction rate of lactic acid exceeds 70% and stability of finished product lactic acid is good.

The invention discloses a supercritical extraction method of tea seed oil. The supercritical extraction method comprises steps of washing, drying, smashing, CO2 supercritical extraction, and refrigerated centrifugation. According to the supercritical extraction method, squalene in tea seed oil is reserved as far as possible; CO2 supercritical extraction can be carried out at a temperature close to room temperature, so that oxidation and loss of thermosensitive substances can be prevented effectively; the supercritical extraction method is suitable for extraction of health-care tea seed oil; CO2 supercritical fluid extraction is simple in operation, short in extraction time, and low in extraction temperature; the supercritical extraction method is nontoxic and harmless, is capable of avoiding product oxidation, chemical reagent residual, pollution, and refining, and is an excellent method used for extracting health-care tea seed oil.

The present invention relates to a method for extracting functional components of propolis by utilizing ultrasonic wave technology, belonging to the field of propolis extract technology. Said invention uses ethyl alcohol as solvent, and adopts the following steps: freezing crude propolis, pulverizing and dissolving the crude propolis in ethyl alcohol, extracting by using ultrasonic technique, filtering, vacuum concentrating filtrate so as to obtain the finished product propolis. At the same time of vacuum concentration the ethyl alcohol can be synchronously recovered. It can raise extraction rate, shorten extraction time and can prepare high-quality propolis product.

A compound solvent for extraction separation of tungsten and molybdenum is prepared by mixing extractant secondary carbon primary amine and Di-(2-ethylhexyl) phosphoric acid, wherein the volume of the secondary carbon primary amine occupies for 30-70% of the total volume, and the balance is the Di-(2-ethylhexyl)phosphoric acid. The separation of tungsten and molybdenum can be achieved by sequentially using the compound solvent to perform extracting, countercurrent washing and reextraction through (NH4)2CO3. The compound solvent replaces a single extractant to separate tungsten and molybdenum, and due to synergistic effect, the partition coefficient of molybdenum is remarkably improved, so that the content of molybdenum oxide in sodium tungstate solution is reduced to lower than 10ppm, the loss of tungsten during the molybdenum removing process is reduced to lower than 0.1%, and the recovery rate of molybdenum is larger than 95%.

A method for extracting edible cornus wilsoniana seed oil from fresh cornus wilsoniana seed fruits at a low temperature comprises the following steps of: taking fresh mature cornus wilsoniana seeds as raw materials, cleaning the seeds, crushing and grinding the seeds into pulp by means of a crusher at a rotating speed of 10-100 r / min, adding water accounting for 30-200% of the weight of the raw materials to the pulp, performing stirring blending at a temperature ranging from 25 to 50 degrees centigrade for 10-120 r / min, and then performing solid-liquid separation through centrifuging to obtain solid residues and an oil-water mixture, and finally performing oil-water separation through centrifuging. The method for extracting edible cornus wilsoniana seed oil from fresh cornus wilsoniana seed fruits at the low temperature is to extract the oil at the low temperature, thereby effectively preventing the emulsification of oil and facilitating oil separation; the oil extraction ratio is greater than 97%; the obtained oil is low in tincture and acid value; the special flavor of the vegetable oil can be kept; the active components of the vegetable oil are not damaged; and the extracted cornus wilsoniana seed oil contains abundant nutrition components without benzo(a)pyrene and trans fatty acid; therefore, the oil can be directly eaten.

A method for the preparing 20 (R)-ginseniside Rg3 includes dissolving panax notoginseng saponins (PNS) with water, adding acids (hydrochloric acid, phosphoric acid, sulfuric acid, acetic acid, glacial acetic acid, formic acid and the like) to adjust the pH to be 1 to 3, heating and returning the mixture for 30 minutes to 60 minutes, recycling an acid liquor and concentrating the acid liquor into paste, and drying the pasted liquor to obtain coarse converted products; and performing silica-gel column chromatography on the coarse converted products, performing gradient elution on chloroform-methanol-water, collecting an eluent, performing tracking detection through thin layer chromatography (TLC) compared with the ginseniside Rg3, merging flow parts mainly containing the ginseniside Rg3, recycling solvents with the amount two times of the amount of the pseudo-ginseng saponin before transformation, performing standing and filtration, and drying filter cakes to obtain the 20 (R)-ginseniside Rg3. Tested by high performance liquid chromatography (HPLC), the content of the 20 (R)-ginseniside Rg3 is larger than 90%. The method for preparing the 20 (R)-ginseniside Rg3 has the advantages of being simple, low in cost, high in product purity, and suitable for industrial production.

The invention provides a method for rapidly preparing forsythin from forsythia suspense leaves and aims at solving the problems that forsythin can be easily decomposed, a preparation process is tedious and long time is consumed in the prior art. The method for rapidly preparing the forsythin from the forsythia suspense leaves comprises the following steps: preparing forsythia suspense leaf powder, firstly carrying out reflux extracting for 2-3 times by adopting absolute ethyl alcohol, concentrating filtrate into paste, then dissolving by adopting distilled water and filtering, concentrating obtained filtrate, refrigerating, filtering to obtain precipitate, dissolving the precipitate by adopting an ethyl alcohol solution, adding petroleum ether for extracting, and concentrating, drying and recrystallizing a solution at the lower layer for 2-4 times, thus the forsythin is obtained. Purity of the obtained forsythin is more than 98% when being detected by virtue of HPLC (high performance liquid chromatography). By adopting the method for rapidly preparing the forsythin from the forsythia suspense leaves, impurities can be greatly reduced, and great convenience is provided for subsequent purification operation; the petroleum ether is adopted for extracting, so that interference of chlorophyll is eliminated, and the purify of the forsythin is greatly increased; no column chromatography is used during separation, so that consumed time is greatly shortened, and manpower and time are saved for production.

An exemplary side-view light emitting diode (LED) includes a substrate, a housing, a LED chip, a capsulation material and a reflecting layer. The housing and the substrate cooperatively form a receiving space therebetween. The LED chip is received in the receiving space and electrically connected with the substrate. The capsulation material is filled in the receiving space and encapsulates the LED chip in the housing. An indent is defined in a top portion of the capsulation material to cave a top surface of the capsulation material. The reflecting layer is spread on the top surface of the capsulation material. The light emitted from the LED chip upwardly towards the top surface of the capsulation material is reflected to a lateral side of the housing by the reflecting layer. The indent has a horizontal section with a size decreased along a top-to-bottom direction. The housing has a diameter gradually increased along the top-to-bottom direction.

The invention provides yacon fruit juice and a preparation method thereof. The yacon fruit juice contains fructooligosaccharide and chlorogenic acid, wherein the content of the fructooligosaccharide is not less than 11,000mg / 100g, and the content of the chlorogenic acid is not less than 19mg / 100g. The preparation method for producing the yacon fruit juice comprises that yacon tubers are prepared into a yacon fruit juice product by cleaning, peeling, crushing, color protection, juicing, enzyme treatment, adsorption, filtration, centrifugation, blending, high-temperature sterilization and filling. The yacon fruit juice keeps the nutrient components of the fructooligosaccharide and the chlorogenic acid, ensures that the contents of the fructooligosaccharide and the chlorogenic acid do not decline along with prolonging of storage time, and also keeps the unique flavor of yacon fruits. The guarantee period of the product is 1 year, and the yacon fruit juice has no sediment or suspension and does not change color in the guarantee period.

The invention provides a method for accurate extraction of sweet potato starch. The method comprises the following steps: (1) crushing sweet potatoes directly without washing to obtain a sweet potato pulp; (2) diluting the sweet potato pulp with water at a weight ratio of the sweet potato pulp to the water of 1:(3-5), and then filtering to obtain filtrate; (3) adding a mixed solution containing abrasive powder of gypsum, a sweet potato leaf extract and soybean oil into the filtrate with the added amount of 0.1% of the weight of the filtrate, then stirring uniformly, wherein during the preparation of the mixed solution, the weight ratio of the abrasive powder of gypsum to the sweet potato leaf extract to the soybean oil is 10:1:1, the abrasive powder of gypsum is put dissolved in water at first to obtain saturated gypsum water, and then the sweet potato leaf extract and the soybean oil are added and are stirred uniformly to obtain the mixed solution; (4) after stirring uniformly, standing for deposition to ensure that the mud, the sweet potato starch and the water in the filtrate are separated into an upper layer, a middle layer and a lower layer; (5) evacuating the water at the upper layer, and taking out the sweet potato starch; (6) performing sun-drying or oven-drying on the sweet potato starch, and bagging.

The invention belongs to the technical field of nuclear fuel cycles, and discloses a method for coextracting uranium, plutonium and neptunium. The method is implemented in a way that: neptunium is coextracted with uranium and plutonium at the co-decontamination section, so that the neptunium enters an organic phase 1AP. The key point is to oxidate Np (V) in an extraction apparatus 1A into Np (VI) which can be extracted by the extraction apparatus. The method implements high yields of uraniumm, plutonium and neptunium, does not increase the salt content in the after-treatment process, and can implement quantitative extraction of the uranium, plutonium and neptunium.

The invention discloses a preparation method, a quality control method and an application of composition of active ingredients ob bitter herb. The composition of the active ingredients of the bitter herb disclosed by the invention mainly comprises cichoric acid and luteolin-7-O-beta-D-glucuronide, and content of the cichoric acid and the luteolin-7-O-beta-D-glucuronide is not less than 80%. An extraction method of the composition comprises that pretreatment is carried out by adopting an enzymatic method, then a supercritical fluid extraction method is adopted, and the obtained extract is respectively subjected to separating, purifying, concentrating and drying by virtue of an AB-8 resin column and a polyamide resin column so as to obtain the composition. Besides, the invention also relates to an application of the composition in preparation of modern bitter herb injection and treatment on coronary heart disease, angor pectoris, myocardial infarction and cerebral infarction and an application of the composition in content determination of the composition of the active ingredients of the bitter herb and quality control of bitter herb medicinal material.

The invention provides a method for extracting and separating cordycepin, belonging to the technical field of intensive process of agricultural products and aiming to solve the problems caused by easily-generated heat in existing cordycepin method that extraction rate and purity are low, only dry samples can be processed while high water content samples are difficult to process. The method comprises the steps of crushing snowflake cordyceps sinensis at low temperature; mixing the obtained material with water in a ratio of 1:5-1:20; after ultrasonic extraction under the condition of 20-30 kHz ultrasonic frequency, mixing and balancing in macroporous resin; purifying by using reverse phase high performance liquid chromatography; and finally obtaining the cordycepin concentrate through desalination using nanofiltration and drying. The method employs low-temperature liquid nitrogen for grinding, combining with low power low-frequency ultrasonic output to promote dissolution, so the mass content of the cordycepin can reach 98-99% at most and the recovery rate can reach 88-90%.

The invention discloses a method for extracting active peptides from a Qinzhou yellow pond turtle. The method comprises the following steps of raw material treatment, hydrolysis, enzymolysis, freezing, melting, concentrating and spray drying to obtain a finished product. Compared with the traditional seed solution shaking table activation, inoculation, fermentation liquid culture and wall breaking technologies, the method has the advantage that the time is greatly shortened.