49results about How to "Rapid thermal stability" patented technology

The invention discloses a method for simultaneously extracting icariin and baohuoside I and II from herba epimedii. The method comprises the following steps of: crushing herba epimedii plant and then passing the crushed herba epimedii plant through a screen mesh, adding alcohol liquor, heating for reflux extraction, and filtering to obtain filtrate B, concentrating under reduced pressure to recycle alcohol to obtain initial extract; extracting the initial extract by pure water, regulating PH, stewing and carrying out suction filtration to obtain icariin extract; carrying out elution on the icariin extract by adopting macroporous adsorption resin, carrying out elution by using alcohol and collecting eluant; adding medical active carbon into the eluant, heating and refluxing, cooling, and filtering to obtain filtrate C; separating, purifying and crystallizing the filtrate C by simulated moving bed chromatography to obtain herba epimedii crystal, and collecting filtrate D; drying the herba epimedii crystal to obtain a pure icariin finished product; adding tween into the filtrate D, carrying out enzymolysis by glucosaccharase or cellulose, and separating and purifying the enzymatic hydrolysate by a chromatographic column mixed and filled by the macroporous resin to obtain products baohuoside I and II.

The invention belongs to the field of natural organic chemistry, and particularly relates to a method for enriching and purifying veratric acid in globeflower by using macroporous adsorbent resin. By using macroporous adsorption technology to separate and purify veratric acid, the invention has the characteristics of good adsorption selectivity for veratric acid, high adsorption and desorption speed, high adsorption capacity, abundant material sources, low production cost, obvious separation effect and high extraction purity, can be used for extracting veratric acid conveniently and quickly, can be used to obtain a semi-finished product of which the content of veratric acid is higher than 30% and a final product of which the content of veratric acid is higher than 90%, and can overcome the defects of low extraction yield and low extraction purity in the conventional method. The macroporous adsorbent resin, which has the advantages of stable physicochemical properties, large surface area, high exchange speed, high mechanical strength, high antipollution capability and high thermal stability, is used for selectively adsorbing veratric acid from the solution in a physical adsorption mode; and the invention has the advantages of high adsorption and desorption speed, and high adsorption capacity.

The invention belongs to the field of natural organic chemistry, and relates to a method for enriching and purifying boschniakia rossica glucoside in boschniakia rossica through supercritical CO2 fluid extraction and macroporous resin coupling. The method has the characteristics that effective components of a medical plant are kept in an extraction process by a supercritical CO2 fluid extraction technology; chemical reaction does not occur in the extraction process; the safety is good; the extraction efficiency is high; the energy consumption is less; the production efficiency is improved; and the cost is lowered. With the adoption of a macroporous adsorbing technology for separating and purifying boschniakia rossica glucoside, a separating effect is obvious; the extraction purity is high; semifinished boschniakia rossica glucoside with the content above 30%, and finished boschniakia rossica glucoside with the content above 95% can be obtained; and the defects that the conventional extraction yield is relatively lower and the extraction purity is low are overcome.

The invention discloses a novel purification method of lycium chinense polyhexose, which comprises the steps that lycium chinense fruits are smashed into crude powder, 15 times of 85% methanol is added for reflux extraction for 120min and filtered; methanol is recovered from a filtrate; the filtrate is concentrated to 3 Be; hydrochloric acid and water at a volume ratio of 3:1 are used to regulate a pH value of a concentrated solution to 2.5; the concentrated solution is placed for 20 min and filtered; a broad-spectrum macroporous resin adsorption column is placed in the filtrate for collection of an eluent; methanol is recovered; the eluent is concentrated and dried to form a polysaccharide semifinished product; a silica gel chromatographic column is placed in the polysaccharide semifinished product; acetone and carbinol at a volume ratio of 3:1 are used to wash impurities; acetone and methanol at a volume ratio of 7:1 are used for elution; an eluent is collected; the collected polysaccharide eluent is refined to form the lycium chinense polysaccharide finished product; and the content is over 70%. The novel purification method has the greatest characteristics that with the adoption of a macroporous adsorption resin-silica gel chromatography coupled method, the novel purification method is quick and convenient; sources of raw materials are abundant; the manufacturing cost is low; the separating effect is obvious; and the extraction purity is high.

The invention provides a kind of epoxy modified nitro enamel and preparation method thereof, described epoxy modified nitro enamel is made of epoxy nitro varnish, pigment, talcum powder, precipitated barium sulfate, 10% bentonite pregel , dibutyl phthalate, anti-sedimentation agent CP-88, 1 / 2 second nitrocellulose solution, mixed dry material, 10% silicone oil butyl ester solution and mixed solvent, and the epoxy nitrocellulose paint is calculated in parts by weight 30‑45 parts of raw materials, 5‑20 parts of pigments, 5‑10 parts of talcum powder, 5‑20 parts of precipitated barium sulfate, 2‑6 parts of 10% bentonite pregel, 0.5‑1.5 parts of dibutyl phthalate, Anti-settling agent CP-880.1-0.3 parts, 1 / 2 second nitrocellulose liquid 25-40 parts, mixed dry material 1.0-2.5 parts, 10% silicone oil butyl ester liquid 0.1-0.3 parts, mixed solvent 1-5 parts, by stirring Prepared by mixing; has excellent adhesion, flexibility, gloss and fullness.

The invention belongs to the field of natural organic chemistry and relates to a method for enriching and purifying fructooligosaccharide in witloof by using a macroporous absorption resin. The method has the characteristics of high absorption selectivity on the fructooligosaccharide which is separated and purified by a macroporous absorption technology, high absorption speed and analysis speed, large absorption capacity, convenience and quickness of extraction, abundant sources in raw materials, low production cost, obvious separation effect and high extraction purity. By the method, a fructooligosaccharide semifinished product with content of over 35 percent and a fructooligosaccharide finished product with content of over 95 percent can be obtained, and the defects of relatively low conventional extraction rate and low extraction purity are overcome. The macroporous absorption resin with stable physical and chemical properties, large surface area, high exchange speed, high mechanical strength, high contamination resistance and high thermal stability is adopted; the fructooligosaccharide can be selectively absorbed from the solution through physical absorption; and the absorption speed and the analysis speed are high and the absorption capacity is large.

The invention belongs to the field of natural organic chemistry and relates to a method for enriching and purifying common phellinus fungus general flavone in common phellinus fungus by using a batch distillation-macroporous absorption resin coupling method. The method is characterized in that the common phellinus fungus general flavone is separated and purified by applying a macropore adsorptiontechnology, the adsorption selectivity to the common phellinus fungus general flavone is better, the separation effect is remarkable, the extraction purity is high, the semi-finished product with more than 35 percent of the common phellinus fungus general flavone and the final product with above 90 percent of the common phellinus fungus general flavone can be obtained, and the defects of relatively lower conventional extraction rate and low extraction purity are overcome. Macroporous absorption resin with stable physicochemical property, large surface area, higher switching speed, high mechanical strength, strong contamination resistance and good thermal stability is selected, and the common phellinus fungus general flavone is selectively absorbed from a solution through physical adsorption, thus the method has the advantages of high adsorption, high deabsorption speed and larger adsorption capacity.