17results about How to "Light color" patented technology

This invention discloses a low-temperature desolventizing machine and its usage method, relating to the field of grain and oil deep processing technology. The low-temperature desolventizing machine includes a machine body and a steam-water integrated utilization device. The machine body includes a cylinder and a rotating mechanism. The cylinder includes a front end cover and a rear end cover located at its front and rear ends. The cylinder also includes an inner cylinder, which is equipped with a feed inlet, a front settling tank, a solvent gas inlet, a rear settling tank, and a discharge outlet. An outer jacket is provided outside the inner cylinder, comprising an annular jacket and multiple flow-guiding jackets. The steam-water integrated utilization device is connected to the flow-guiding jackets and the annular jacket via pipelines and can provide hot water circulation and flash steam heating to the inner cylinder. This invention uses hot water and flash steam instead of steam heating, changing the traditional A-cylinder / B-cylinder desolventizing method, and solving the problems of high residual solvent content, low nitrogen solubility index, dark color, high powder content, and large moisture loss in low-temperature meal, greatly reducing solvent and steam consumption.

This invention relates to the field of organic compound preparation technology, specifically a method for preparing 11-triglycerides of carbonate via low-temperature acylation. This method uses glycerol and undecanoyl chloride as raw materials, employing a synergistic system of a "composite acid-binding agent + Lewis acid catalyst," and combines in-situ dehydration technology and a stepwise heating strategy in a dual-solvent environment to achieve efficient synthesis. The specific steps include: under nitrogen protection, dissolving glycerol in a dichloromethane-toluene dual solvent, adding a composite acid-binding agent of pyridine and N,N-diisopropylethylamine, anhydrous zinc chloride catalyst, and 4A molecular sieve for in-situ dehydration; dropwise adding undecanoyl chloride at a low temperature of 5-10°C, followed by sequential heating to 30°C for 2-3 hours and then reacting at 50°C for 12-16 hours; and post-processing using a combined process of filtration-multi-stage extraction-membrane separation-column chromatography. This invention provides mild reaction conditions, effectively suppresses side reactions, produces high-purity products, increases molar yield, and reduces solvent toxicity and purification costs.

The application discloses a preparation method of concave-convex texture ceramic tiles with uniform color and luster, and comprises the following steps: A, blank is pressed into a blank body by roller forming, and the blank body layer is obtained after first drying; B, printing ink of a mold is printed according to a preset pattern, digital face glaze is sprayed, and the concave-convex texture layer is formed after second drying; C, color ink is printed according to the preset pattern, and the inkjet printing layer is formed; D, digital protection glaze is sprayed, and the protection glaze layer is formed after third drying and fourth drying; E, kiln firing is performed, and the concave-convex texture ceramic tiles with uniform color and luster are obtained after polishing. The preparation method of the concave-convex texture ceramic tiles with uniform color and luster is simple in steps and high in operability, and under the premise of solving the black edge problem and ensuring the uniform color and luster of the ceramic tiles, the concave-convex texture effect with clear texture, high consistency and high fidelity is obtained on the surface of the ceramic tiles.

The application discloses a kind of high light-transmitting high-efficiency shielding ultraviolet biodegradable film and its preparation method and application.The high light-transmitting high-efficiency shielding ultraviolet biodegradable film provided by the application includes: biobased degradable film and lignin-tannin composite nanoparticles located in biobased degradable film.The high light-transmitting high-efficiency shielding ultraviolet biodegradable film provided by the application makes full use of the structural characteristics of lignin and tannin, and the composite particles generated by self-assembly of lignin and tannin, the π-π stacking of benzene ring in lignin structure and the rich phenolic hydroxyl in tannin structure can significantly enhance the ultraviolet shielding performance.In addition, tannin is lighter than lignin, which can significantly reduce the color of the film.Therefore, a biodegradable film with high transparency and high-efficiency ultraviolet shielding effect can be prepared at low addition amount.

The invention relates to an integrated preparation process of low-residue trioctyl trimellitate, which comprises the following steps: carrying out ring-opening reaction on trimellitic anhydride and 2-ethyl hexanol under the protection of inert gas; then adding a main catalyst to carry out first-stage esterification reaction; then adding a cocatalyst to carry out a second-stage esterification reaction, after the esterification reaction is finished, carrying out first treatment on the reaction liquid by using a 2-5% dilute sodium carbonate or sodium hydroxide solution, then adjusting the pH value of the reaction liquid subjected to the first treatment to 2-3 by using dilute sulfuric acid or hydrochloric acid, and carrying out countercurrent washing by using hot water; adding excessive organic acid into the reaction liquid for reaction to obtain esterification reaction liquid after the catalyst is recycled; and finally, sequentially adsorbing, filtering and refining to obtain the low-residue trioctyl trimellitate. According to the method, a multi-element catalyst system and a step-by-step esterification process are adopted, and esterification reaction liquid after reaction is treated in a three-step treatment mode, so that efficient recovery of a catalyst is realized, and residues of the catalyst in trioctyl trimellitate are effectively reduced.

The present application relates to a kind of compositions with soothing repair anti-wrinkle efficacy, consisting of the following components: 1-10 parts of ginsenoside, 90-99 parts of notoginseng stem and leaf extract;Wherein, the notoginseng stem and leaf extract includes the following weight ratio of components: 2-8:1 water-soluble organic solvent and notoginseng stem and leaf extract.The ginsenoside in the composition of the present application is compounded with notoginseng stem and leaf extract, has synergistic effect, and jointly plays the role of soothing repair anti-wrinkle.

The present application belongs to the technical field of traditional Chinese medicine extraction, and particularly relates to an extraction method of high-activity ginseng extract, which is used for improving the conversion and extraction efficiency of rare ginsenosides Rg1, Rg3, Rg5, Rh2 and Compound K. The extraction method combines microbial fermentation, electrostatic field wall breaking and supercritical CO2 extraction. The microbial fermentation treatment is mainly used for promoting the synthesis of ginsenosides, the high-voltage pulse electric field induces the electroporation effect of ginseng cells to increase the permeability of cell membrane and cell wall, the supercritical CO2 extraction has high cell permeability to improve the extraction rate and purity of ginsenosides, and in addition, the catalytic aid added in the extraction process is helpful to the conversion and catalysis of rare ginsenoside components.

The application discloses a preparation method of a dihydroxyethyl bisphenol A ether and belongs to the technical field of organic synthesis. The steps of the preparation method are as follows: bisphenol A, a mixed acetate catalyst and a solvent are added into a reaction kettle, nitrogen is replaced after stirring is started, the temperature is increased to a reaction temperature, then the reaction is started by introducing ethylene oxide, the temperature is kept after the ethylene oxide is added completely, the reaction is continued until the pressure does not decrease, the temperature is decreased to a desolventizing temperature, then desolventizing is carried out until no solvent comes out, and then the temperature is decreased, the gas is removed, and the product is discharged, so that the dihydroxyethyl bisphenol A ether is obtained; wherein the mixed acetate catalyst is composed of calcium acetate, magnesium acetate and barium acetate; and the solvent is methylcyclohexane. The preparation method has excellent catalytic effect, the prepared dihydroxyethyl bisphenol A ether has high content, low hydroxyl value and light color, and the solvent has small toxicity and is easy to recycle.

The application discloses a conductive monofilament and a preparation method thereof. The conductive monofilament comprises an inner layer and an outer layer, the outer layer wraps the inner layer, the inner layer is a nylon monofilament, and the outer layer is a conductive coating. The conductive coating comprises the following components by weight: 50-55 parts of DMSO; 16-20 parts of polyurethane resin; 18-20 parts of conductive mica powder; 7-9 parts of conductive graphene; and 3-4 parts of superfine silicon dioxide powder. According to the technical scheme provided by the embodiment of the application, the inner and outer layer structure formed by wrapping the inner layer monofilament with the conductive coating slurry has the effect of conducting electricity, and the conductive coating is arranged by using materials such as conductive mica powder and conductive graphene, so that the formed conductive coating is light in color, the formed conductive monofilament is also light in color, the prepared conductive monofilament has high strength and good conductivity, and the light-colored conductive monofilament can have more application scenarios.

The application discloses a cellulose solution containing a stabilizer and a preparation method and application thereof, and the preparation method comprises the following steps: stirring and mixing an ionic liquid and a stabilizer at room temperature until a uniform mixture is obtained; adding a cellulose raw material into the obtained mixture, fully stirring and pre-mixing at room temperature to form a pre-dissolved cellulose mixture; and heating and stirring the obtained cellulose mixture until the cellulose raw material is completely dissolved to form a uniform and transparent cellulose solution, that is, the cellulose solution containing the stabilizer is obtained. By adding the stabilizer, the application reduces the color deepening of the ionic liquid in the process of dissolving the cellulose under high temperature or water-containing conditions.

The invention provides an application of an StMYB113b gene in regulating and controlling the epidermal color of a potato tuber. According to the invention, the key gene StMYB113b for regulating and controlling the formation of the red skin pigment of the potato tuber is found and cloned for the first time, and the gene can influence the skin color of the potato tuber by regulating and controlling the synthesis of an anthocyanin-related compound. Through overexpression or knockout of the gene, regulation and control of the potato tuber epidermis color can be achieved, a new way and gene resources are provided for potato variety improvement, and the gene has important theoretical value and application prospects.

The application discloses a starch-anthocyanin compound and a preparation method and application thereof. The compound is obtained by blending high amylose starch after partial gelatinization with anthocyanin, then retrogradation, dialysis, drying, crushing and sieving, wherein the amylose content of the high amylose starch is more than 50% of the total mass of the starch; the starch / anthocyanin compound is in a granular form, and the granules are in a state of concave and mutual aggregation or adhesion. The high amylose starch is used to replace common starch, and the high amylose starch is partially gelatinized, so that the granular form of the starch is retained, and the hydrophobicity of the starch granules is enhanced, then the starch is compounded with anthocyanin, and the obtained compound has the stability, hydrophobicity and pH response color changing capacity; and the compound can be directly used for freshness indication of food.

The application relates to the technical field of functional coatings, and discloses a non-ignition type bio-based bamboo fiber coating which is composed of inorganic cementing material, modified bamboo fiber, inorganic aggregate, conductive filler, defoaming agent, dispersing agent and water in a certain proportion. The modified bamboo fiber is immersed in a mixed solution of ammonium dihydrogen phosphate and boric acid and is coated with nano silicon dioxide sol, so that the coating has excellent flame-retardant performance; the conductive filler is compounded by nano tin antimony oxide and conductive mica powder; the coating takes natural bamboo fiber as a functional carrier, is green and environment-friendly, has excellent performance in three dimensions of non-ignition, anti-static and flame retardation.

The invention relates to the technical field of food processing, and provides a method for extracting isoflavone aglycone from soybean germs.The method comprises the following steps that firstly, dry soybean germs serve as raw materials and are smashed, and soybean germ powder is obtained; 2, uniformly mixing the soybean germ powder with an aqueous solution prepared by using short-chain alcohol to prepare a mixed solution with the soybean germ powder mass concentration of 5-15%, and the aqueous solution prepared by using the short-chain alcohol has the mass concentration of 80-90%; the extraction environment is kept at 50-60 DEG C, and the extraction time is kept for 1-3 hours. By adopting an integrated process of combining ultrasonic-assisted short-chain alcohol low-temperature extraction with immobilized enzyme multi-stage enzymolysis, efficient conversion from glucoside isoflavone to aglycone is realized under a mild condition, the damage of traditional acid hydrolysis to an active structure is avoided, and the stability and biological activity of a product are remarkably improved.

This invention belongs to the field of cosmetic raw material preparation technology, specifically relating to a method for decolorizing Xinjiang erythromycin, its products, and applications. The method includes: raw material pretreatment: pulverizing Xinjiang erythromycin and processing it using high-pressure instantaneous explosion technology; extraction: extracting the pretreated material with an ethanol-water solution, and obtaining a crude extract of Xinjiang erythromycin after solid-liquid separation; activated carbon decolorization: adding ethanol to the crude extract and mixing evenly, then adding activated carbon for decolorization treatment, followed by solid-liquid separation after decolorization; resin purification: loading the supernatant obtained after decolorization onto a resin column, performing gradient elution, collecting the ethanol eluent rich in phenolic acids, concentrating, and drying. This invention achieves an excellent balance between efficient decolorization and retention of highly active ingredients. It can strongly adsorb and remove dark pigments while significantly reducing the adsorption loss of the target phenolic acids.

This invention discloses a continuous purification method for 5-hydroxymethylfurfural (HMF), belonging to the field of biochemical separation technology. The method first mixes a crude liquid containing HMF with an aqueous solution of a formaldehyde-removing agent, converting HMF into water-soluble α-hydroxymethanesulfonate. Then, abandoning traditional crystallization separation methods, it achieves efficient separation from impurities such as humic acid through liquid-liquid phase separation. The aqueous phase enriched with α-hydroxymethanesulfonate is alkalized and then extracted with an organic solvent to recover high-purity HMF. The extracted aqueous phase is then acidified to regenerate the formaldehyde-removing agent for recycling. This invention features a simple process, rapid separation, easy continuous operation, and recyclable reagents, making it particularly suitable for purifying HMF. The final HMF purity can reach 99.5 wt%, with a recovery rate of up to 88%.

The application discloses a kind of fermented vegetable oil and its production method.The application belongs to resting cell whole-cell enzymatic fermentation process: first by high-density fermentation to obtain yeast bacteria liquid, then separation and washing to obtain clean high-activity yeast bacteria, high-activity yeast bacteria, water, vegetable oil are mixed according to proportion, under specific temperature, oxygen supply and pH condition, by whole-cell enzymatic fermentation process using resting yeast bacteria to ferment vegetable oil, after fermentation, secondary centrifugal filtration is obtained fermented vegetable oil.Compared with the fermented vegetable oil obtained by conventional microbial fermentation process, the fermented oil obtained by the application has less impurities, lighter color, cleaner oil, lower ash content, stronger oxidation stability, longer shelf life and other advantages, and compared with natural vegetable oil crude oil, it is rich in free fatty acids, flavonoids, polysaccharides and natural glycolipids, has better skin moisturizing, repairing, soothing and antioxidant effects, and has good economic value and application prospect in the field of beauty and skin care.