37results about How to "Uniform particle size dispersion" patented technology

The invention belongs to the technical field of food and particularly discloses instant whole lotus root powder containing highly-resistant starch and a preparation method of the instant whole lotus root powder containing the highly-resistant starch. The preparation method includes subjecting fresh lotus roots taken as a raw material to washing, peeling, slicing, color protection, pulping and cryogenic grinding so as to obtain fresh lotus root pulp; subjecting the fresh lotus root pulp to limited-enzyme hydrolysis-drum drying, crosslinking adsorption, complexing, vacuum drying, grinding, blending, extruding granulation, sieving and packaging so as to obtain the instant whole lotus root powder containing the highly-resistant starch. The instant whole lotus root powder containing highly-resistant starch and the preparation method have the advantages that since embedded crosslinking, complexing, enzymatic debranching treatment and drum drying are combined to be applied to a whole lotus root powder production process, reconstituability of the whole lotus root powder can be improved, liquidity and solubility of the whole lotus root powder can be increased, resistant starch content in the whole lotus root powder can be increased, and the whole lotus root powder can have a certain effect on intestinal microecological balance regulation and gastrointestinal function improvement; powder granules produced by extruding granulation are uniform, loose and porous and can swell and gelatinize within short time, and accordingly the whole lotus root powder is excellent in instant solubility and wettability.

The invention provides a hydroxyl-alpha-sanshool nano-liposome and a preparation method thereof, belongs to the field of pharmaceutical preparations, in particular relates to a hydroxyl-alpha-sanshool composition which is a preparation prepared from the following raw and auxiliary materials in parts by weight: 1 part of hydroxyl-alpha-sanshool and 10-30 parts of a lipid auxiliary material, the lipid auxiliary material is composed of cholesterol and phospholipid; the mass ratio of the cholesterol to the phospholipid is 1: (1-5). The preparation is a nano-liposome. The nano-liposome has very high encapsulation efficiency, and the drug loading rate of the liposome can be effectively improved. Meanwhile, the liposome is uniform in particle size dispersion and good in stability; and the liposome is high in safety and has a better curative effect.

The invention discloses a method for preparing nanometer ferroferric oxide through acid-regenerating desilicated mud cake. The method comprises the steps as follows: adding water to desilicated mud cake, heating and pulping to obtain desilicated slurry which has good dispersibility; and then adding acid for regeneration to the obtained desilicated slurry; heating and uniformly agitating; then adding thin iron rim charge after reacting for 2 hours; heating to 80 to 90 DEG C so as to achieve acid dissolution and reduction to the desilicated mud cake; filtering, washing with water, and adjusting pH to 4 through ammonia water to obtain filtrate which is ferrous chloride turbid solution; further adding fatty acid to carry out oxidization; centrifuging, washing and drying to obtain nanometer ferroferric oxide rough product; finally ultrasonically dispersing the nanometer ferroferric oxide rough product into the water; magnetically attracting and separating; and then drying in a vacuum drying box at 60 to 90 DEG C so as to obtain nanometer ferroferric oxide. According to the method for preparing nanometer ferroferric oxide through acid-regenerating desilicated mud cake disclosed by the invention, the recycling and reusing of industrial waste desilicated mud cake is achieved, and the environmental pollution can be reduced.

The invention discloses a method for locally releasing Crisaborole in a sustained manner. The method includes a method for preparing Crisaborole soluble film preparations. The method for preparing theCrisaborole soluble film preparations is characterized by comprising steps of S1, selecting ionic active agents with (-CH2-) and the chain lengths of 3-15 to be used as raw materials for dispersing agents, and selecting alcohol substances to be used as stabilizers for the corresponding dispersing agents; S2, carrying out gas dispersion on Crisaborole original medicines in the ultrasonic intensityranges of 60-80 W/m<2>, then adding the raw materials for the dispersing agents, carrying out treatment in room-temperature keeping environments for 20-40 minutes, adding the stabilizers, and carrying out ultrasonic treatment under identical intensity conditions for 20-30 minutes to form wide distribution stock solution; S3, continuously filtering the stock solution by the aid of filter paper with the filter hole specifications of 0.22 micrometer by 2-3 times and collecting filter liquor to obtain the single-distribution Crisaborole soluble film preparations with the sizes of 0.10-0.15 micrometer. According to the technical scheme, the method has the advantages that the ionic active agents with the appropriate lengths are selected, the ultrasonic intensity is controlled, accordingly, finished medicine products with uniformly dispersed particle sizes and stable and controllable release curves can be obtained, and the practicality can be improved.

The invention provides a positive electrode material of a lithium-sulfur battery and a preparation method thereof, and aims at improving the electronic and electric conductivity so as to improve the capacity of a positive electrode of the lithium-sulfur battery and prolong the circle life of the lithium-sulfur battery, and solving the problem that the capacity of the positive electrode of the lithium-sulfur battery rapidly decreases, resulting in short circle life of the battery. The positive electrode material is characterized in that a BaTiO3 material is introduced, so that the electronic and electric conductivity of the positive electrode material can be improved, and the capacity and the circulating performance of the electrode can be effectively improved; the introduced porous carbonmaterial is high in specific area and high pore distribution performance, and a large number of elemental sulfur can be stored, so that high sulfur content in a composition is ensured; sulfur is uniformly distributed in porous carbon, so that the utilization rate of active substances of the sulfur can be increased; the pore channel structure of the porous carbon relieves the dissolution loss of anintermediate product which is polysulfide lithium, thus the shuttling effect is reduced; the service life of the battery is prolonged, and the coulombic efficiency is improved. The preparation methodis simple in processes, simple in equipment, short in manufacturing period, easy to operate, low in energy consumption, environmentally friendly, and easy for industrial production.

The invention discloses a water-soluble anthraquinone composition. The water-soluble anthraquinone composition is prepared from, by mass, 1% of anthraquinone, 0.5%-1.5% of dispersing agent, 0.3%-0.5% of anti-precipitation agent and 0.1%-0.3% of defoaming agent. The water-soluble anthraquinone composition has the effect of improving the anthraquinone solubility.

The invention belongs to the field of glass fiber impregnating compounds, and concretely relates to a preparation method of an amic acid emulsion, and a method for modifying the surface of a glass fiber with the amic acid emulsion. The milky amic acid emulsion with a solid content of 0.1-5% is prepared by controlling a molar ratio of aromatic dianhydride to 4,4'-diaminodiphenyl ether at 1.05:1 to 2:1 and a ratio of water to N,N'-dimethylformamide at 2:1 to 10:1 and adding 0.01-5% of an acidic or neutral water-soluble polymer, and the effect of modification of the surface of the glass fiber with the amic acid emulsion is determined by detecting the interfacial shear strength using a micro-debonding process. Active groups such as -COOH and -NH in the emulsion react with silicon hydroxyl groups on the surface of the glass fiber to form a strong hydrogen bond or chemical bond, and heating is performed for imidization to achieve a good interface temperature resistance and form a good compatibility with the resin in order to improve the interface properties of the fiber, so the amic acid emulsion has broad application prospects.