239results 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 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 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 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 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.

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 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 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.