12results about How to "High extraction purity" patented technology

The invention belongs to the technical field of spectral analysis, and particularly relates to a pharmaceutical volatile oil extraction interface detection method and system based on spectral analysis, and the method comprises the following steps: synchronously collecting water transmission light intensity and oil transmission light intensity at a plurality of vertical sampling heights, and combining initial calibration light intensity to obtain a phase state contrast; obtaining a scattering penalty weight in combination with the reference transmission light intensity; acquiring a compensation interface gradient based on the scattering penalty weight and the phase state contrast; performing global peak search on the compensation interface gradient to extract the interface height and the compensation interface gradient extreme value, and further obtaining the emulsification turbidity; and obtaining a safe oil collection index based on the set reference elevation, the interface height and the emulsification turbidity, and carrying out automatic liquid outlet control based on the safe oil collection index. According to the method, physical noise is effectively filtered to accurately lock a real chemical interface, a decision model of comprehensive purity and reserves is constructed, and the extraction purity and batch-to-batch stability of volatile oil are improved.

The application belongs to the technical field of natural substance separation and extraction, and particularly relates to a kind of Haematococcus pluvialis multi-product cascade separation method based on eutectic solvent sequential extraction and enzyme membrane reactor coupling, comprising the following steps: (1) cell wall weakening pretreatment step; (2) water-soluble component extraction step; (3) pigment component extraction step; (4) astaxanthin extraction step; (5) enzyme conversion step. Through the synergistic effect of eutectic solvent sequential extraction and enzyme membrane reactor, efficient, green and continuous cascade separation of water-soluble components, pigments, astaxanthin and xylo-oligosaccharides in Haematococcus pluvialis is realized, and product purity and resource utilization are improved.

The application belongs to the technical field of medicines, and specifically discloses an anti-depression m-hydroxybenzoic acid compound and a preparation method and application thereof; the m-hydroxybenzoic acid compound Hyperioxides A-F provided by the application has not been reported; the six compounds have good anti-depression effects, and further research shows that the compounds Hyperioxide A, Hyperioxide D, Hyperioxide E and Hyperioxide F have significant protective effects on SH-SY5Y cells induced by corticosterone, and are superior to positive drugs fluoxetine and Luoyoutei, and can be used for developing drugs for treating depression.

The application relates to the technical field of archaea DNA extraction, in particular to a preparation method and application of auxiliary wall-breaking nanometer magnetic beads for archaea DNA extraction. The method comprises the following steps: (1) constructing an inverse emulsion droplet microfluidic chip: washing, drying and hydrophobic modification treatment are performed on a PDMS base material to prepare a microfluidic chip; (2) preparing an inverse microemulsion system: the continuous phase and the dispersed phase are respectively pumped into the microfluidic chip at a predetermined flow rate, so that Fe 2+ and Fe 3+ undergo a coprecipitation reaction to generate Fe3O4 nanoparticles; (3) maturation crystallization; (4) demulsification separation and washing; and (5) drying to obtain auxiliary wall-breaking nanometer magnetic beads. The method has the beneficial effect of solving the problems in the prior art that the cell wall is difficult to effectively break, the DNA release rate is low, the extraction purity is poor, the repeatability is insufficient and the standardization and continuous preparation are difficult to realize when DNA extraction is performed on archaea samples in extreme environments.

This invention discloses a method for extracting target products from dairy raw materials, relating to the field of food processing technology. Before strong anion exchange chromatography, this method introduces a synergistic pretreatment step of ultrafiltration and conductivity adjustment, achieving "speed increase, efficiency enhancement, quality improvement, and cost reduction" in the chromatography process. It overcomes the technical bottlenecks of traditional ion exchange chromatography in processing dairy raw materials, such as slow speed, susceptibility to contamination, and instability, providing a solution for the efficient, high-purity, and large-scale production of β-lactoglobulin and α-lactalbumin. This method can also combine strong and weak anion exchange chromatography to further improve the extraction purity of β-lactoglobulin and α-lactalbumin. Furthermore, this method can simultaneously achieve efficient extraction of multiple target substances such as casein micelles, lactose, and milk mineral salts, thereby significantly increasing the added value and resource utilization efficiency of dairy by-products.

This invention belongs to the field of chemical analysis and relates to the extraction of 6,7-dihydroxy-2,4-dimethoxyphenanthrene, specifically a method for extracting high-purity 6,7-dihydroxy-2,4-dimethoxyphenanthrene. This invention, by improving extraction efficiency, simplifying purification steps, increasing product purity, and reducing preparation costs, helps promote the application development and market application of this compound, and also contributes to the sustainable development of related industries. This invention fully utilizes the abundant resources of yam and its by-products, turning waste yam by-products into valuable resources. This not only extends the yam industry chain and increases added value, but also makes full use of resources, resulting in significant economic and social benefits. This invention also has significant advantages in improving separation efficiency, reducing environmental pollution, simplifying operations, increasing yield, and fully utilizing resources, and is expected to be widely applied and promoted in the field of yam compound extraction.

This invention relates to the field of sludge treatment technology, and more particularly to a method for preparing struvite by acid leaching of phosphorus from sludge gasification residue with kaolinite assistance. The method includes the following steps: S1, calcining a mixture of kaolinite and sludge in a certain proportion at 800-1000℃ for a period of time; S2, dissolving the calcined product with an acid solution, separating the solid and liquid, and collecting the phosphorus-containing supernatant; S3, adding a certain amount of magnesium and ammonium sources to the phosphorus-containing supernatant, adjusting the pH to 9.4-10, stirring for a period of time, separating the solid and liquid, washing the filtered solid with deionized water, and drying to obtain struvite crystals. This invention introduces kaolinite before sludge calcination, increasing the phosphorus content in the calcined product, improving the utilization rate of sludge gasification residue, and solidifying heavy metals in the sludge. It avoids a large amount of heavy metals entering the phosphorus-containing supernatant during acid leaching, resulting in a stable and reliable MAP struvite material.

The invention relates to the technical field of sparkling wine, and particularly discloses a sparkling wine preparation method based on radix ophiopogonis active ingredient solid alcohol, which comprises the steps of radix ophiopogonis active ingredient extraction, solid alcohol preparation, sparkling wine compound blending, sterilization and packaging. By matching with centrifugal filtration, rotary evaporation concentration and freeze drying processes, the extraction efficiency and purity of active ingredients such as saponin and polysaccharide in the radix ophiopogonis are remarkably improved, the problem of insufficient release of the active ingredients caused by traditional normal-temperature soaking is avoided, and the solid alcohol matrix can be used for flexibly regulating sweetness, acidity and flavor auxiliary materials; the dwarf lilyturf tuber sparkling wine has the advantages that the strong taste of the traditional highly-soaked wine is obviously improved, the dwarf lilyturf tuber sparkling wine is more in line with the preference of modern consumers on light-alcohol and easy-to-drink drinks, has the natural health-care property of dwarf lilyturf tuber and the relaxed and pleasant feeling of sparkling wine, meets the consumption requirements of the current market on low-alcohol and functional drinks, and expands the application scene of the traditional medicinal and edible materials.

This invention discloses a method for preparing purslane exosomes with anti-allergic effects and their applications, specifically relating to the field of natural active substances. The method includes washing fresh purslane and then juicing or homogenizing it, separating solid residue from the liquid juice to obtain a plant homogenate supernatant as a precursor. The precursor is then subjected to low-temperature differential centrifugation to remove cell debris and large particulate impurities, and the clarified supernatant is collected. The clarified supernatant is then filtered through one or more multi-stage filter membranes, with pore sizes selected from 5 μm, 1.2 μm, 0.45 μm, 0.22 μm, and 100 nm. Through optimized extraction processes, such as specific enzymatic hydrolysis steps, centrifugation conditions, and ultrafiltration technology, the extraction efficiency and purity of exosome-like nanovesicles are significantly improved. Compared to traditional extraction methods, this method can more accurately remove impurities, preserve the integrity and bioactivity of exosome-like nanovesicles, and ensure their stability and effectiveness in subsequent applications.

This invention relates to the field of nuclear radiation monitoring technology, specifically a remote online tritium monitoring system, comprising: a data acquisition module for synchronously acquiring end-point tritium concentration, pipeline environmental parameters, and background radiation data; a coupling model construction module for constructing a coupled model of gas-solid interface adsorption kinetics and fluid transport, and establishing a dynamic transfer function; a source term inversion and reconstruction module for performing deconvolution operations to inversely deduce the true tritium concentration at the source; a state assessment and threshold adjustment module for real-time calculation of pipeline adsorption saturation and dynamic adjustment of alarm thresholds; an early warning generation module for generating early leak warning commands; and an operation and maintenance prediction module for identifying pipeline maintenance needs based on the trend of adsorption performance degradation. This invention overcomes the defects of signal lag and peak clipping, achieving a second-level response to sudden pulse leaks.

The utility model belongs to the technical field of extraction tank, concretely is a kind of spice extraction tank, including tank body, extraction mechanism and deslagging mechanism, the extraction mechanism is arranged in the inside of the tank body, the deslagging mechanism is arranged in the inside of the tank body and is connected with the extraction mechanism;The extraction mechanism includes the separation cylinder fixedly connected in the inside of the tank body, the inside of the separation cylinder is equipped with filter cylinder, the top of the tank body is fixedly connected with first motor, the output of first motor is connected with the rotating shaft extending to the inside of the tank body, the outside of the rotating shaft is fixedly connected with several groups of stirring piece.This spice extraction tank, by first helical shaft vertical transfer slag to second helical shaft, realize efficient deslagging, first helical shaft is connected with rotating shaft by magnetic coupling, rely on electromagnetic control to realize flexible start-stop, when deslagging, magnetic coupling drives first helical shaft to rotate by the driving force of first motor, and slag material is smoothly discharged from tank body.

The utility model discloses a kind of three-stage preheating simulation devices of hydrometallurgy of nickel, including simulation room, heating assembly, power supply assembly and temperature control assembly, first reaction kettle, second reaction kettle and third reaction kettle are respectively provided in the simulation room, the heating assembly includes first heating pipe, second heating pipe and third heating pipe, the first heating pipe is fixedly arranged in the both sides of first reaction kettle, the second heating pipe is fixedly arranged in the top and bottom of second reaction kettle, the third heating pipe is arranged around in the circumferential side of third reaction kettle, the first heating pipe, second heating pipe and third heating pipe are all connected power supply assembly, the first reaction kettle, second reaction kettle and third reaction kettle outside are all provided with temperature control assembly, three reaction kettles and corresponding heating pipe set, the preheating temperature of different stages can be accurately controlled, so as to meet the different temperature needs in hydrometallurgy of nickel process.