15results about How to "Reduce color" patented technology

The invention relates to the technical field of biotechnology, and discloses a special biological fresh-keeping preservative method for cattle stomach, which comprises the following steps: firstly, pretreating the cattle stomach; the method comprises the following steps: putting the cattle stomach into flowing clear water, washing off obvious impurities, dirt and mucous membrane liquid on the surface, soaking the cattle stomach in saline water or a food-grade cleaning agent solution in a certain proportion for 10-30 minutes, kneading the surface of the cattle stomach, washing the kneaded cattle stomach with clear water again, and removing impurities and cleaning agent residues after soaking and kneading, and placing the cleaned cattle stomach in a filter screen or a clean container, and naturally draining water. And further determining the strain by adopting a 16SrDNA (Deoxyribose Nucleic Acid) detection technology, and analyzing experimental data to find out a bacteriostatic agent with the best effect and the lowest effective bacteriostatic concentration through a bacteriostatic activity experiment. And finally, determining quality index data of the cattle stomach through a single factor and an orthogonal test, and optimizing the bacteriostatic agent with the best effect, so that the shelf life of the cattle stomach stored at low temperature is prolonged.

The invention discloses a processing method of frying oil. The processing method comprises the following steps: providing the frying oil; detecting the acid value of the frying oil and / or the content of polar components; according to the acid value of the frying oil and / or the content of the polar components, providing an adsorbent with matched weight and corresponding proportion to treat the frying oil to obtain qualified frying oil, the acid value of the qualified frying oil is less than or equal to 0.5 mg / g, and the content of the polar components of the qualified frying oil is less than or equal to 2wt%. The frying oil treatment method provided by the invention overcomes the defects of long frying oil treatment time, large oil filter powder addition amount, large frying oil loss, high processing cost and the like in the existing frying oil treatment, and can realize accurate addition of the adsorbent by improving the frying oil treatment method, thereby saving the adsorbent dosage, avoiding large oil loss, and improving the frying oil treatment efficiency. Meanwhile, the color and luster of oil for frying can be reduced.

The invention belongs to the technical field of thin film materials, and particularly relates to a transparent ultraviolet-proof composite film as well as a preparation method and application thereof. The transparent ultraviolet-proof composite film provided by the invention is prepared from the following raw materials: acetylated lignin, a halloysite nano material, chitosan and polyvinyl alcohol, the acetylated lignin is loaded on the halloysite nano material. The specific transparent ultraviolet-proof composite film disclosed by the invention has high transparency on the basis of ensuring that the passing rate of ultraviolet light with the wavelength of 200-400nm is less than 5%, the passing rate of visible light with the wavelength of 400-780nm reaches more than 60%, and meanwhile, the transparent ultraviolet-proof composite film also has high mechanical property, is capable of blocking moisture and oxygen, is good in biological safety and is degradable.

The invention relates to the technical field of fish meat freezing and fresh-keeping, in particular to refrigerating fluid capable of remarkably improving the fish meat freezing quality. The refrigerating fluid is prepared from the following components in percentage by mass: 10 to 15 percent of ethanol, 1 to 3 percent of chitosan, 1.0 to 2.5 percent of rhizoma polygoni cuspidati extract, 0.05 to 0.15 percent of spearmint extract, 2 to 5 percent of malic acid and the balance of deionized water. The freezing method is dipping freezing, the fish meat is dipped in a pre-cooled freezing liquid and then is subjected to cryopreservation, and the freezing temperature is-18 DEG C to-38 DEG C. The preparation method of the refrigerating fluid comprises the following steps: adding the chitosan into the malic acid and the deionized water, and uniformly stirring to obtain a solution A; sequentially adding ethanol and spearmint extract into the solution A, and stirring; and adding the polygonum cuspidatum extract, stirring and homogenizing. According to the freezing liquid, the freezing rate of fish meat can be remarkably increased, mechanical damage to muscle fibers caused by repeated formation of ice crystals is greatly reduced, the influence of temperature fluctuation on the quality of the fish meat is reduced, and the influence of freezing on the quality of the fish meat is reduced to the maximum extent.

The invention discloses a preparation method of a leveling agent O. The preparation method comprises a preparation method of a magnesium-aluminum-cobalt composite oxide catalyst and a preparation method of the leveling agent, and the preparation method of the magnesium-aluminum-cobalt composite oxide catalyst comprises the following steps: 1, synthesizing; the preparation method of the leveling agent O comprises the steps of 1, feeding, 2, segmented reaction and 3, filtering, the preparation method of the leveling agent O is simple in technological process, a catalyst can be recycled and reused and is easy to treat, meanwhile, the selectivity of the catalyst in the preparation method of the leveling agent O is good, and the catalyst can be recycled and reused. The prepared leveling agent is narrow in molecular weight distribution, low in color and luster and few in by-products, and the catalyst is easy to prepare, low in cost and suitable for industrial production.

The invention discloses a preparation method of a simulation tree with an infrared stealth camouflage characteristic, and belongs to the technical field of infrared camouflage. The preparation method is used for solving the technical problems that in the prior art, a camouflage tree for military camouflage is poor in water resistance and acid-resistant color fastness, and the infrared stealth camouflage characteristic of a simulation tree needs to be further improved, and the preparation method of the simulation tree with the infrared stealth camouflage characteristic is provided. Comprising the following steps: heating and melting infrared simulation resin imitating the color of bark, and then coating the infrared simulation resin on the outer part of a simulation tree skeleton to form a simulation coating layer with the thickness of 20-30mm on the outer part of the simulation tree skeleton. By preparing the simulation tree skeleton coated with the glass fiber and coating the simulation tree skeleton with the infrared simulation resin, the highly similar simulation tree is prepared, the water-resistant and acid-resistant color fastness of the simulation tree is improved, the moisture absorption performance of the simulation tree is also improved, the transpiration of green vegetation leaves is simulated, and the simulation tree skeleton can be used as a simulation tree. The target is fused into the natural environment, and the infrared stealth effect is improved.

The invention relates to the technical field of waste lubricating oil treatment, in particular to a lubricating oil deacidification and degumming settling agent and a preparation method and application thereof. The invention relates to a lubricating oil deacidification and degumming settling agent which is prepared from the following raw materials in parts by mass: 90-95 parts of potassium silicate with the mass concentration of 50%, 8-12 parts of calcium-based alkaline mineral powder, 7-9 parts of organic amine, 3-4 parts of a nonionic surfactant, 2-3 parts of a dispersing agent, 50-60 parts of an organic solvent and 20-30 parts of water. According to the deacidification and degumming settling agent for the lubricating oil, a new polymer obtained after the calcium-based alkaline mineral powder and the potassium silicate are combined with the pillared agent for modification and activity excitation is adopted, and the deacidification and degumming settling agent has very high adsorption capacity and ion exchange capacity, can adsorb polar substances such as carboxylic acid and inorganic acid in the waste lubricating oil, and has efficient deacidification and degumming effects; in practice, the acid value of the waste lubricating oil can be reduced from 8mgKOH / g to below 0.01 mgKOH / g by using the acid reducing agent.

The utility model discloses a side light-emitting device with curved surface light emitting, and relates to the technical field of side light-emitting devices. Comprising a PCB, a plurality of LED lamp beads are arranged on the PCB, chips are installed in the LED lamp beads, colloid is arranged on the outer sides of the chips, a semi-reflection cover is arranged on the colloid, distribution and diffusion of light rays can be improved through the curved surface design, and therefore the uniformity of a light source is improved, and through the design of the proper curvature, the brightness of the light source is improved. Light can be more effectively scattered to the surface of the whole display screen, dark areas and brightness nonuniformity are reduced, the view angle characteristic of the light source can be improved through the curved surface design, the light can be more widely scattered out from the side face, and therefore the view angle performance of a displayer is improved, and color and brightness nonuniformity caused by view angle changes is reduced.

To provide an X-ray ceramic scintillator array as well as a radiation detector and a radiation inspection apparatus using the same, which prevents a resin used for a reflective layer of the scintillator array from being colored due to X-ray irradiation so as to realize a significant improvement against the output drop of the scintillator array. The resin used for the reflective layer of the X-ray ceramic scintillator array has a feature wherein a ratio of absorption intensity in a wavenumber range of 1490 cm-1 to 1750 cm-1 to absorption intensity in a wavenumber range of 2500 cm-1 to 2990 cm-1 has a value that falls within a specific range in an absorption spectrum based on Fourier transform infrared spectrometry (FT-IR).

The invention belongs to the technical field of preservation and fresh keeping of low-temperature food, and particularly relates to a fresh keeping method of tilapia mossambica. Specifically, according to the preservation method of the tilapia mossambica provided by the invention, the tilapia mossambica is treated by adopting an ascorbic acid solution with the mass concentration of 0.5-1.5% and is stored at ice temperature. Under the condition that no chemical preservative is added, an existing ice-temperature tilapia storage technology is improved, ascorbic acid is added to reduce the growth speed of putrefying bacteria, and the shelf life of the tilapia stored at the ice temperature is prolonged.

The present application provides a polymerization catalyst and a preparation method and use thereof, wherein the catalyst comprises polymerization units derived from a first monomer and a second monomer, respectively, wherein the molar ratio of the polymerization units derived from the first monomer to the polymerization units derived from the second monomer is 20:1 to 1:20. The polymerization catalyst of the present application can be used for acyl chloride reaction, and has the advantages of high catalytic activity, high conversion rate, no residue, and easy recycling.

The present invention relates to a liquid-crystal composition comprising (A) dye compounds and (B) a liquid-crystal material, wherein the dye compounds (A) include an anthraquinone compound represented by general formula (1) and an anthraquinone compound represented by general formula (2) in a specific proportion and further include a dye compound which is neither the anthraquinone compound represented by general formula (1) nor the anthraquinone compound represented by general formula (2). The present invention further relates to a liquid-crystal composition comprising the (A) and (B) components and further containing (C) a photocurable compound and (D) a photopolymerization initiator, a cured object obtained from the liquid-crystal composition, and a light-modulating element in which the liquid-crystal composition or the cured object is sandwiched therein.

This invention relates to the field of phenolic resin technology, specifically to a preparation process for polymerized rosin-modified phenolic resin. First, polymeric rosin with high dimer content is purified by devolatilization, adsorption decolorization, and antisolvent precipitation to obtain directionally polymerized rosin A. Then, an epoxidation reaction is performed to obtain epoxidized product B. Subsequently, cashew phenol, 3-pentadecanylphenol, and oleic acid are grafted in stages to obtain directionally modified polymeric rosin C. Simultaneously, a phenolic prepolymer is prepared. Finally, the prepolymer, modified rosin C, and natural rosin are polycondensed together, and an antioxidant is added to obtain the finished product. This process, through directional control of raw materials and staged reaction control, enables the resin to possess high softening point, light color stability, high n-heptane tolerance, and excellent processing safety, significantly improving batch consistency and making it suitable for high-performance ink binders.

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.