13results about How to "Easily hydrolyzed" patented technology

The invention relates to the technical field of pet food processing, and discloses surrounding hot air slow drying equipment for pet food processing and a three-section type baking method.The surrounding hot air slow drying equipment for pet food processing comprises a drying box, a hot air drying unit is installed at the bottom in the drying box, and a circulating conveying unit is installed in the drying box; a plurality of drying frames are evenly distributed on the circulating conveying unit, material overturning mechanisms are arranged in the drying frames, positioning assemblies are installed in the drying box, and the material overturning mechanisms and the positioning assemblies are matched to be used for overturning raw materials in the drying frames. Food particles on the drying frame are turned over by moving a turning plate in the drying frame, meanwhile, an arc-shaped plate and a second fixing plate are matched to enable the food particles to be scattered in an S shape, damage to the food particles is avoided, meanwhile, the contact face of the food particles and hot air is replaced, and the drying effect is improved while the pet food yield is increased; through the three-stage baking process, the gelatinization degree of the baked grain starch of the pet food can be increased to 90% or above, and digestion and absorption are facilitated.

The invention provides a Milsartan potassium capsule and a preparation method thereof, the Milsartan potassium capsule is prepared by filling a Milsartan potassium micro-tablet into a hollow capsule, the compliance of a patient is improved, and compared with a common tablet, the micro-tablet can improve the dissolution rate and increase the contact area with gastrointestinal mucosa after oral administration, so that the bioavailability of a medicine can be improved, and the bioavailability of the medicine is improved. In addition, the micro-tablets are filled into hollow capsules, so that the exposure of the tablets can be reduced, the influence of moisture can be reduced, and the stability of the medicines can be improved.

The invention belongs to the technical field of chemical engineering, and particularly relates to a method for preparing 5-hydroxymethylfurfural by degrading cellulose in a FePO4 / SBA-15-SO3H catalytic system, which comprises the following steps: SBA-15 preparation; the preparation method comprises the following steps: preparing a FePO4 / SBA-15-SO3H catalyst; and step 3, preparing the 5-hydroxymethylfurfural in a FePO4 / SBA-15-SO3H catalytic system. According to the method, FePO4 / SBA-15-SO3H is adopted as a catalyst system, cheap cellulose is used as a raw material to prepare the 5-hydroxymethylfurfural with a high additional value, the method has the advantages of low price and easiness in recovery, the corrosion to equipment is small, the pollution to the environment is reduced, the selectivity for generating the 5-hydroxymethylfurfural is higher, and the method is suitable for industrial production. And the yield of the 5-hydroxymethylfurfural is improved.

The invention relates to a sludge treatment process and device based on flash evaporation, and the device comprises a first-stage flash evaporation system, and also comprises any one of a hydrolysis tank and a second-stage flash evaporation system. According to the method, the sludge is subjected to resourceful treatment in a flash evaporation and pyrohydrolysis and / or secondary flash evaporation mode, cell walls in the sludge can be fully and effectively broken under the low-temperature condition through the flash evaporation technology, moisture and solutes in cells are released, the dewatering performance of the sludge is improved, and the sludge can be recycled. The wall-broken sludge is conveyed to the hydrolysis tank for hydrolysis and / or the second flash evaporation tank for flash evaporation and drying, and the wall-broken sludge is more easily hydrolyzed and / or dried. The problems of high energy consumption, large heat loss and long treatment time in the sludge drying process are solved, and the productivity is greatly improved.

The present application relates to the field of chemical and chemical technology, and in particular to a method for synthesizing sodium azide. It can solve the problems of long reaction time, low production efficiency, many by-products, large pollution emissions, and high safety hazards in the sodium azide preparation process in the related technology. A method for synthesizing sodium azide, comprising: using aromatic alcohol as a raw material to prepare nitrite ester of aromatic alcohol; under alkaline conditions, allowing nitrite ester to undergo a reduction reaction with hydrazine hydrate to prepare sodium azide; wherein the aromatic alcohol comprises: one or more compounds represented by the structural formula: #imgabs0#, wherein Ar is selected from the following substituted or unsubstituted C6~C 20 Aryl and substituted or unsubstituted C3~C 10 Any one of the heteroaryl groups, R is selected from #imgabs1#n is an integer of 1 to 3; wherein, in #imgabs2#, R1 and R2 are the same or different and are independently selected from any one of H and C1 to C3 alkyl groups; when Ar is selected from substituted C6 to C 20 Aryl or substituted C3~C 10 In the case of heteroaryl, the substituted substituent is selected from C1-C9 alkyl, and * indicates the attachment site.

The application discloses a method for preparing high-yield galacturonic acid by combining chemical and biological methods, which comprises the following steps: firstly, mixing gelidium and a maleic acid solution, and performing microwave heating and acidolysis to obtain D-galactose; and then taking engineered Pseudomonas putida as a biological catalyst to efficiently oxidize the D-galactose into galacturonic acid. In the application, the D-galactose obtained in the microwave heating and acidolysis step has high concentration and high yield, and the D-galactose can be completely oxidized into galacturonic acid in the subsequent biological catalysis step. The method does not need strong acid or special catalyst, is green and environment-friendly, has low raw material cost, simple process, high galacturonic acid yield, and realizes high-value development and utilization of the biomass gelidium.

The invention discloses a preparation method of amisulpride, and belongs to the technical field of preparation of anti-schizophrenia drugs. Comprising the following steps: mixing 2-methoxy-4-amino-5-ethyl sulfonyl benzoic acid, 9-fluorenylmethoxycarbonyl chloride and an alkaline solution to form a reaction solution, and sequentially carrying out low-temperature reaction and heating reaction on the reaction solution to obtain Fmoc-2-methoxy-4-amino-5-ethyl sulfonyl benzoic acid; the preparation method comprises the following steps: mixing N-ethyl-2-aminomethylpyrrole, an organic mixed solvent, a dehydration condensation agent and Fmoc-2-methoxy-4-amino-5-ethylsulfonyl benzoic acid, and reacting to obtain Fmoc-amisulpride; the Fmoc-amisulpride and diethylamine are mixed and subjected to a reaction, and the amisulpride is obtained. Another new synthesis path of amisulpride is innovatively designed, and meanwhile, the amisulpride has good yield performance.

The present invention provides a safe and effective DDS technique that realizes higher accumulation in lesions and reduced accumulation in normal organs including the liver, and thus can afford sufficient therapeutic effects with smaller amounts of drugs. Specifically, a composition containing carbonate apatite particles loaded with a drug, wherein the particles have an average particle size of larger than 500 nm and not more than 1000 nm, primary particles are formed in the presence of a polyethylene glycol (PEG) derivative having one or more carboxylic acids or derivatives thereof or salts thereof at the ends thereof, and the PEG derivative is taken up in the primary particles, is provided.

The invention discloses a method for electroplating gold on the surface of a beryllium bronze part, which comprises the following steps of: removing oil, pre-corroding, loosening oxide skin, brightening, weakly corroding, cleaning, flash plating copper, nickel-plating, activating, pre-plating gold and plating gold on the surface of the beryllium bronze part to finally obtain the beryllium bronze part with a qualified gold-plated layer.

The invention discloses a synthesis method of cefminox, and belongs to the technical field of pharmaceutical chemical synthesis. Comprising the following steps: dispersing 7 [beta]-amino-7 [alpha]-methoxy-3-[(1-methyl-1H-5-tetrazolyl)-mercaptomethyl]-3-cephem-4-carboxylic acid diphenyl methyl ester in deionized water, and then adding hydrochloric acid for hydrolysis to obtain a compound I; mixing and activating halogenated acid and a carboxyl activator to obtain a pre-activated solution; mixing and stirring the compound I and a pre-activation solution to react to obtain a compound II; d-cysteine hydrochloride and a compound II are mixed and dispersed in purified water to form a mixed solution, and the mixed solution is catalyzed by alkali liquor and then subjected to acid treatment to obtain the cefminox. The preparation method comprises the following steps: taking 7beta-amino-7alpha-methoxy-3-[(1-methyl-1H-5-tetrazolyl)-mercaptomethyl]-3-cephem-4-carboxylic acid diphenyl methyl ester and halogenated acid as initial raw materials for synthesis, carrying out amidation reaction and nucleophilic substitution reaction, and finally, carrying out acid regulation to obtain the cefminox.

The invention belongs to the technical field of thickening agents, and particularly relates to a preparation method of an easily-crosslinked polyacrylamide thickening agent, which comprises the following steps: (1) outer layer coating of a hydrolytic agent sodium carbonate, (2) liquid preparation of an acrylamide aqueous solution, (3) nitrogen introduction and oxygen removal of the acrylamide aqueous solution, (4) initiation polymerization of the acrylamide aqueous solution, and (5) hydrolysis of a polyacrylamide gel block. And (6) powdering and detecting the polyacrylamide. By adding the hydrolytic agent with the coating film, the polymerized polyacrylamide is uniformly hydrolyzed, carboxylate radicals are uniformly distributed, the probability of cross-linking among polyacrylamide molecules is greatly increased, and a temperature-resistant, salt-resistant and shear-resistant three-dimensional network structure is formed by cross-linking. The product quality indexes are as follows: the solid content is 89-91%, the molecular weight is greater than or equal to 2,000,000, the anion degree is 10-20%, the crosslinking rheological viscosity is greater than 150 centipoises, the crosslinking can be hung, and the requirements of low-permeability and ultra-low-permeability reservoirs and compact oil and gas reservoirs on the thickening agent are completely met.

The invention relates to a gas chromatography content determination method of tetra (dimethylamino) titanium, which adopts a gas chromatography method for detection, the method has simple steps and is convenient to operate, the content of tetra (dimethylamino) titanium in a sample to be detected can be rapidly and accurately determined by adopting the gas chromatography method, and the content of tetra (dimethylamino) titanium in the sample to be detected can be accurately determined by selecting a specific chromatographic column type according to the specific method. According to the present invention, the rapid and efficient detection of the tetrakis (dimethylamino) titanium is achieved through the detection of the tetrakis (dimethylamino) titanium and the limitation of the chromatographic instrument condition parameters, and compared with the nuclear magnetic hydrogen spectrum method in the prior art, the analysis speed is rapid, the operation is simple, the result is accurate, the detection cost is low, the refrigerant and the high pollution solvent are not required, and the production and the purification work of the tetrakis (dimethylamino) titanium can be rapidly guided.

This invention provides a method for preparing oat polypeptides and their applications and compositions, relating to the field of cosmetics technology. The preparation method of this invention includes the following steps: (1) oat swells, is dried after steam explosion treatment, and then pectinase, cellulase, and amylase are added for enzymatic hydrolysis of carbohydrates to obtain enzymatically hydrolyzed oat residue; (2) a complex protease is added to the enzymatically hydrolyzed oat residue, and a first enzymatic hydrolysis is performed under the condition of 3-8% volume concentration of ethanol to obtain enzymatic hydrolysate A; the complex protease is papain, bromelain, and flavor protease in a mass ratio of 3-6:3-6:2; (3) trypsin is added to enzymatic hydrolysate A for a second enzymatic hydrolysis to obtain enzymatic hydrolysate B; (4) enzymatic hydrolysate B is ultrafiltered to obtain oat polypeptides. This application obtains oat polypeptides with small molecular weight and high content, which, when used in the preparation of cosmetics, have significant moisturizing, anti-wrinkle, and skin roughness-reducing effects.