197results about How to "Shorten the hydrolysis time" patented technology

The invention provides a method for synthesizing a tin-silicon molecular sieve. The method comprises: (1) hydrolyzing an organic silicon source, a tin source and an alkali source template agent to obtain a mixture A and carrying out first crystallization on the obtained mixture A; and (2) mixing the material obtained by first crystallization with an inorganic silicon source to obtain a mixture B and carrying out second crystallization on the obtained mixture B. The invention provides the tin-silicon molecular sieve synthesized through the method and an application of the molecular sieve. The invention provides a phenol hydroxylation method. By taking the inorganic silicon source which is relatively low in price as a part of, or even, a main silicon source, the use level of organosilicone esters is reduced, and the synthetic benefit is improved to a great extent. Moreover, the synthesized tin-silicon molecular sieve is high in relative crystallinity, high in catalytic oxidation activity and high in selectivity, and shows the characteristics of being high in catalytic oxidation activity and high in selectivity on hydroquinone in a probe reaction, i.e. a phenol hydroxylation reaction.

The invention provides egg white powder with high foamability and a preparation method thereof and relates to reconstruction of whey protein structure and functional properties, belonging to the technical field of biological processing of foodstuffs. According to the invention, on the basis of preliminary work, enzymatic hydrolysis of lipase in advance and cooperative enzymatic hydrolysis of composite protease are utilized for treatment of egg white; total usage amount of lipase and composite protease is less than usage amount of individually used lipase or protease, and however, foamability and foam stability of egg white powder obtained by combined utilization of lipase and composite protease are higher than those of egg white powder obtained by individual utilization of lipase or composite protease; the egg white powder obtained in the invention can meet demands for high-grade products on the market, and the advantages of a simple process and high cost performance are achieved in the invention. According to the invention, the ratio of active usage amount of Aspergillus oryzae protease, papain and trypsin is determined to be 1:1:1; the usage amount and other technological parameters cooperatively allow egg white powder with high foamability to be obtained; egg white powder with high foamability provided in the invention enables the additional output value of eggs to be increased, lays a technical foundation for development and industrial production of special-purpose egg white powder products and increases economic benefits for enterprises.

The invention relates to a system and method for obtaining a carbon source by utilizing ultrasonic enhanced sludge hydrolysis. The biological sludge in a municipal sewage plant is used as a raw material; the flocculation structure and cell wall of the sludge are firstly damaged by utilizing a waterpower shear force generated by an ultrasonic cavitation effect; the sludge after ultrasonic preprocessing is added to an anaerobic hydrolysis reactor; and under anaerobic conditions, macromolecular solid organic matters are finally converted into volatile fatty acids (VFAs) such as acetic acid, propionic acid, butyric acid and the like through a series of biological hydrolytic action. In the invention, the efficiency and velocity for a sludge to release a carbon source are improved by utilizing the coupling of ultrasonic processing and anaerobic hydrolysis processes, and the N (nitrogen) and P (phosphorus) which are released by hydrolysis are effectively eliminated and recovered by utilizing a crystallization method. The invention can solve the problem of carbon source insufficiency of the existing denitrification and dephosphorization process and realizes the stabilization and resource of the sludge to some extent. Simultaneously, because the hydrolysis velocity of the sludge is enhanced, the hydrolysis time of the sludge is greatly shortened and the investment and operating cost of engineering are lowered.

The invention relates to the field of processing of agricultural products, in particular to short fiber food waste residue-based nano cellulose and a preparation method thereof. The preparation method comprises three parts of pretreatment of short fiber food waste residues, acid hydrolysis of food residue fibers and homogenization. The nano cellulose prepared by the method has the granularity of 50-300nm, is short bar-shaped or microsphere-shaped and can be widely used for preparing a food additive or medicament excipient, and the like. In the method, acid hydrolysis is combined with high-pressure homogenization, thus the acid consumption and hydrolysis time are reduced, the granularity uniformity of the nano cellulose is improved; and the invention is suitable for mass production.

The invention relates to a method for improving anaerobic digestion performance of sludge by utilizing microwave alkaline thermal hydrolysis, and the method belongs to the technical field of solid waste treatment. Alkaline solution is firstly added in the sludge with the solid concentration of 7 percent-10 percent for controlling the pH value of the sludge, the mixing is carried out after adding the alkaline solution, the alkalified sludge is placed in a pressure-bearing reactor, the heating is carried out in a microwave field with the frequency of 2450MHz, the sludge heated by microwave is cooled to the room temperature, and the anaerobic digestion treatment is carried out on the sludge after the cooling. More than 60 percent of organic matters in the sludge which is treated by the method are converted to liquid phase; during anaerobic digestion, the conversion efficiency of the organic matters of the sludge is improved, thereby being an effective means for realizing the whole process pollution control, the energy conservation and the emission reduction of sewage treatment.

The invention discloses a method for efficiently degrading lignocelluloses raw material. The method comprises the following steps of: simple smashing of raw material as well as enzymolysis of normal pressure microwave unite alkali liquor and cationic surface active agent disposal raw material and nonionic surfactant auxiliary cellulose, wherein the roughly smashed lignocelluloses raw material, the cationic surface active agent and the alkali liquor are mixed, after microwave processing at normal temperature, liquid and solid are separated, and furthermore, the nonionic surfactant auxiliary cellulose is added for solid enzymolysis so as to obtain a sugar liquid. According to the method, the advantages of the physical method and the chemical pretreatment method are complementary, so that the degree of crystallinity of the cellulose raw material is effectively lowered, the pretreatment time is shortened, and the pretreatment effect is improved; furthermore, alkali liquor with low concentration is beneficial to effective recycle in industrial production, pretreatment of lignocelluloses raw material at normal temperature can also lower the energy consumption in the pretreatment process obviously, and sugar liquid with higher concentration can be obtained in shorter hydrolysis time as the nonionic surfactant auxiliary cellulose is used for enzymolysis.

The invention discloses a method for preparing starch nanocrystal, and belongs to the field of modified starch processing. The method is based on the principle that lipid layers in waxiness corn starch grains have resistance for acid, the starch is prompted to be crushed because of homogenization treatment under a certain pressure, the lipid is prompted to be digested through Soxhlet extraction by using an alcohol-water solution, a pore structure from outside to inside is formed, then the resistance to the acid is eliminated, and the penetration of the acid inside the starch is prompted under a negative pressure condition so as to accelerate hydrolysis of the starch grains in an amorphous area. The method specifically comprises the following steps: homogenously crushing the starch grains under a pressure of 50-150 MPa, degreasing the crushed starch by using a 70-90% methanol-water solution, and accelerating hydrogen ions in sulfuric acid to rapidly penetrate into the starch grains to be subjected to restrictive hydrolysis under a 0.06-0.1MPa negative pressure condition, so as to prepare the nanocrystal. Through the technical measures, the hydrolysis period of the starch is shortened to be 48-72 hours, the starch nanocrystal yield is greatly improved to be 19-25%, and the particle size distribution is 20-300nm.

The invention provides a pretreatment method for removing antibiotics in ferment antibiotic pharmaceutical wastewater. The method removes antibiotics in the ferment antibiotic pharmaceutical wastewater mainly through adjustment of the pH value of the wastewater and high-temperature catalytic hydrolysis, and the treated pharmaceutical wastewater without antibiotics can enter a subsequent biochemical treatment process for treatment. The method provided by the invention can basically remove antibiotics in the pharmaceutical wastewater, reduce inhibition effect of high-concentration antibiotics on microbes, lower down difficulty in treatment of the wastewater by using the subsequent biochemical process and decrease generation of drug-resistant bacteria and drug-resistant genes in subsequent biochemical treatment.

The invention discloses a method for efficiently preparing a monocyanamide solution, and is used for solving the problems of high equipment investment, high energy consumption, long production period, high production cost, high requirement on concentration of carbon dioxide, high content of calcium ions and incomplete filtration of cyanamide waste residue of an existing production process of the 50% monocyanamide solution. The method comprises the steps of performing a hydrolytic decalcification process step, adding phosphoric acid to regulate pH value, and performing microporous filtration, and evaporation concentration to obtain a monocyanamide product. The monocyanamide solution is prepared by improving a gas inlet way of kiln gas and applying a microporous filtration method, an ion exchange resin decalcification technology and a rotary thin film scraper steam method. Compared with a domestic traditional process, by adopting the method, the requirement of the traditional process on the concentration of carbon dioxide is reduced, the content of the calcium ions in the monocyanamide product is strictly controlled, the product quality is improved, the production period is shortened, the energy consumption is reduced, and the production cost is reduced, so that the method is suitable for industrial large-scale production and has good social and economic benefits.

The invention discloses a method for pre-treating a lignocelluloses raw material for enzyme hydrolysis in combination of strong phosphoric acid and hydrogen peroxide. The method comprises the following steps: using strong phosphoric acid as a solvent and hydrogen peroxide as a catalyst to remove lignin and hemicellulose in the lignocelluloses raw material, adding water in the solution to regenerate cellulose in the solution so as to obtain regenerated cellulose which is low in crystalline and polymerization degree and suitable for enzyme hydrolysis, using the regenerated cellulose after filtering and separating for the enzyme hydrolysis to produce fermentable carbohydrate, wherein the hydrolysis efficiency is 75-100%. The method is suitable for lignocelluloses raw materials in different types such as crop stalks, woods and bamboos, wild herbs or woody and the like, the method is simple in operation, low in energy consumption, clean and non-pollution, low in requirement on grain size of raw materials, and strong in raw material adaptability, and the pre-treatment effect is perfect.

A method for preparing an odor-free delicious amino acid through combination of acid hydrolysis and enzymatic hydrolysis of salted egg white belongs to the field of deep processing of bird egg by-products. According to the invention, the salted egg white is taken as a raw material and is then subjected to homogenization, combined action of acid hydrolysis and enzymatic hydrolysis, neutralization and filtering to obtain the odor-free delicious amino acid. The method combining acid hydrolysis and enzymatic hydrolysis replaces a method of direct acid hydrolysis and enzymatic hydrolysis on protein of animals and plants in the traditional process, not only are harmful byproducts and extraneous odor well controlled in the acid hydrolysis process due to the subsequent enzymatic hydrolysis, but also the hydrolysis time is effectively shortened, the pollution to the neighboring environment is reduced, and the state environmental protection requirement is met; the salted egg white whose fat content is about 0.25% is used as the raw material, so that the production of trichloropropanol is inhibited in the process of acid hydrolysis, and then an odor-free amino acid hydrolysate product containing no trichloropropanol is obtained, wherein the degree of hydrolysis of the product is 52%-54%, delicate amino acids (glutamic acid and aspartic acid) and sweet amino acids (alanine, glycine, proline, serine and threonine) account for about 60% of the total amino acids.

The invention belongs to the technical field of composite molecular sieve materials, and particularly relates to a core-shell USY@SBA-15 composite material as well as a preparation method and application thereof. An SBA-15 shell layer is assembled by silicon source hydrolysis and product crystallization in different acid media, and the hydrolysis time is shortened by means of silicon resource prehydrolysis, so that the problem that the acid property is affected due to the dealuminization of a USY molecular sieve in the assembly process is effectively avoided. An SBA-15 mesoporous material is prompted to be directionally assembled on the surface of the USY molecular sieve by adjusting the proportion between a silicon resource, a template, USY and H20, so as to form a regular and uniform mesoporous layer with controllable thickness, therefore, the SBA-15 mesoporous material is prevented from being separated from the USY molecular sieve, and the novel core-shell material compounded with a nanometer interface and having the characteristic of compounding the acid property and the aperture dual gradient is obtained ultimately. Compared with the USY molecular sieve, the core-shell USY@SBA-15 composite material serves as the carrier component of the hydroprocessing catalyst after the aluminum replenishment of the shell layer, thus remarkably promoting the activity and selectivity of the catalyst.

The invention discloses a grease high-pressure continuous hydrolysis process, wherein raw grease reacts in a reaction tower at certain temperature and pressure and then is subjected to hydrolysis. The grease high-pressure continuous hydrolysis process has the advantages of easy continuous control, stable product quality, capability of reaching the degree of slight colouration or no colouration for the produced fatty acid, high hydrolysis pressure, short production period, high hydrolysis percentage which is generally more than 95 percent, simple and convenient operation, and capability of realizing automatic control and mass production.

The invention relates to a process for preparing corn peptides by taking corn starch sugar residues as raw materials. The process comprises the following steps of: crushing corn starch sugar residues, adding absolute ethyl alcohol to extract a yellow pigment, drying the materials subjected to complete pigment extraction, crushing and sieving, adding water, adjusting the pH value, and respectively adding alkaline protease and flavourzyme to hydrolyze; adjusting the pH value by using hydrochloric acid and adding active carbon to decolor and remove bitter; desalting the obtained feed liquid by using a membrane system, and freezing and drying in vacuum to prepare corn peptides powder. According to the process, the corn starch sugar residues are used as the materials to prepare the corn peptides, and the process is low in cost, material consumption and energy consumption, and is beneficial to the improvement of resource utilization of by-products.

The invention discloses a making technique of soybean high-F value oligopeptide, which comprises the following steps: a. hydrolyzing protein in two steps; b. adjusting pH value of the collected supernatant at 4.0-6.0; adding activated char at 20-40 deg. c to adsorb 5-20 min; adopting plate and frame filtering method to separate the activated char and enzymolyze peptide; obtaining the product with receiving rate over 50% and molecular weight at 200-1000, F value over 20 and free amino acid over 10% in the high-F value egg oligopeptide weight.

The invention provides a preparation method of composite protein powder with a high amino acid grade. The preparation method specifically comprises the following steps: performing micronization treatment on raw material protein by a colloid mill and / or a high-pressure homogenizer, heating the raw material protein to denature the protein, performing countercurrent ultrasonic assisted enzymatic hydrolysis through single protease or multi-enzyme combination, performing individual or joint fermentation of yeast, lactic acid bacteria and bacillus subtilis to remove stinking and peculiar smell, performing ultrafiltration and ion exchange resin desalting, evaluating and supplementing essential amino acids, performing enzymatic polymerization and reconstitution reaction, and performing drying or performing drying and mixing to obtain a high-quality protein product with a reasonable proportion of the essential amino acids and an amino acid grade being 95 or above. The obtained composite proteinpowder has the high essential amino acid grade, belongs to high-quality protein, is easy to digest and absorb, has low sodium content, is suitable for people who need the high-quality protein, elderly people with a low protein digestion function, and persons under rehabilitation; the protein powder with low contents of sodium, potassium and phosphorus is suitable for people suffering from chronickidney disease (CKD) and the like; the product also has the effects of resisting oxidation, lowering blood cholesterol, strengthening the body and enhancing immunity.

The invention discloses a preparation method of a chicken flavor material. The method comprises the following steps: 1, putting water and a chicken skeleton in a strong bone crusher, and carrying out rubbing beating to obtain a chicken bone slurry; 2, adding a compound enzyme to the chicken bone slurry obtained in step 1 for enzymatic hydrolysis, wherein the components of the compound enzyme comprise an alkaline protease and papain; and 3, carrying out a Maillard reaction of a chicken bone enzymatic hydrolysis liquid obtained in step 2 in a reaction kettle to obtain the liquid chicken flavor material. The method allows the enzymatic hydrolysis of the chicken skeleton to be carried out by using the compound enzyme, so the finally obtained chicken flavor material has a high nutritional value and lifelike and pure mouthfeel, and overcomes a defect of the bitter taste generation of general enzymatic hydrolysis.

The present invention relates to the field of preparing positive electronic radioactive medicine, especially the preparation apparatus and process of 2-fluoro-8 substituent-2-deoxy-beta-D-glucose. The apparatus includes wind bath for heating and cooling the reaction bottle, and negative perssure transmission unit for ultimate product with reduced radioactivity loss, shortened time and raised synthesis efficiency. The technological process combined acid-alkali hydrolysis without possibility of elimination reaction in the 2-position, and it has short hydrolysis period and high radioactive purity and chemical purity of the prepared medicine.

The invention discloses a feed maturation method and a high-temperature maturation device. The feed maturation method includes the following steps that: steam generated by a boiler is delivered to a maturation pot filled with materials; the materials are constantly stirred so that the materials can be fully matured; the matured materials are taken out and dried; and finally, fragmentation is carried out on the resulting materials to obtain a finished product. A novel feed processing technology and a device are provided in the present invention, being characterized in that the raw materials of feed after maturation, can make starch more easily digestible, protein content higher and protein more easily absorbed; and being advantaged in simple operation, energy conservation, low carbon, environmental protection and greatly reduced cost of feed processing.

The invention relates to a separating purifying method for ingenol extract, and belongs to the field of separation of traditional Chinese medicine. The to-be-solved technical problem is to provide a separating purifying method for ingenol extract. The separating purifying method for ingenol extract comprises the following steps: a, adding an alkali into ingenol extract for hydrolysis, adding an acid for neutralizing, and concentrating to obtain a paste; b, separating and purifying the paste through silica gel column chromatography; and c, performing reduced-pressure concentration on the ingenol ethyl acetate solution collected in the step b, standing for precipitating, and filtering to obtain ingenol. The method is simple in operation, avoids multi-step extraction operation, the yield is improved, and also large-scale continuous production is realized. Silica gel in chromatography column B can be repeatedly used for two or more times, the silica gel usage amount and the reagent consumption quantity are reduced to a certain degree, and production cost is substantially reduced.

The preparation process of small size GeO2 powder includes the following steps: adding high purity GeCl4 solution in the volume ratio between GeCl4 and H2O of 1 to 5-9 into electronic level deionized water to hydrolyze in the addition speed of 30-150 ml / min while stirring in 500-1400 rpm to react at 0-15 deg.c; further stirring in 500-1000 rpm after finishing addition for 15-30 min while ultrasonic vibration in the frequency of 40 KHz and power of 50-100 W; washing produced GeO2 particle with electronic level deionized water and stoving at 150-180 deg.c to obtain small size GeO2 powder.

Disclosed is an improvement in a conventional process for C5 and C6 sugar recovery from lignocellulosic biomass for fermentation to ethanol, which process including the conventional steps of pretreatment of the biomass with steam at elevated temperature and pressure, collection of C5 sugars from hemicellulose breakdown, cellulose hydrolysis and collection of C6 sugars from cellulose breakdown. The improvement includes conditioning of the biomass prior to the pretreatment step by heating the biomass with steam for a time period between 5 minutes to 60 minutes to achieve a steam treated biomass having a temperature of about 80 to 100° C.; and adjusting a moisture content of the steam treated biomass to about 45% to 80%. An increased recovery of C5 and C6 sugars is achieved compared to the conventional process.

The invention discloses an acid and alkali combination pretreatment method of straw efficient saccharification, which comprises the following steps that: firstly, raw material slurry consisting of straw particles, inorganic metal salt, inorganic acid and peroxide takes reaction for 1 to 50 minutes at 100 DEG C to 200 DEG C, then, the temperature is reduced, the reaction stops, finally, solid and liquid products are separated, the liquid product is hydrolytic liquid glucose, the solid product is soaked for 1 to 30 hours by alkali solution with the mass concentration being 0.1 percent to 1.5 percent, and solids obtained through solid and liquid separation after the soaking are used as enzymolysis raw materials. The acid and alkali combination pretreatment method is used, the operation flow process is simple, the treatment time is short, the energy consumption is low, the straw utilization rate is high, and the cellulase enzymolysis effect is good.

The invention provides a preparation method of pinctada fucata martensii meat anti-oxidizing oligopeptides, which comprises the following steps: (1) selecting pinctada fucata martensii meat to be put into cold water with cold homogenate to obtain a pinctada fucata martensii meat homogenate solution; (2) adding alkali protease in the pinctada fucata martensii meat homogenate solution, mixing uniformly, and carrying out ultrasonic complex enzymolysis; (3) further conducting enzymolysis for the homogenate solution obtained by the ultrasonic complex enzymolysis to continue carrying out constant temperature enzymolysis in water bath, eliminating enzyme after finishing the enzymolysis, and obtaining supernate containing the pinctada fucata martensii meat anti-oxidizing oligopeptides by centrifugal separation after cooling; and (4) gradually separating the supernate containing the pinctada fucata martensii meat anti-oxidizing oligopeptides by adopting 5-10kDa and 1kDa ultrafiltration membranes through membrane separation and purification treatment and collecting the filter liquor to obtain the inctada fucata martensii meat anti-oxidizing oligopeptides solution, and carrying out purification treatment to obtain powder thereof. The method has simple operation and new technique, can greatly improve the hydrolysis rate of the pinctada fucata martensii meat by ultrasonic auxiliary enzymolysis, shortens hydrolysis time and reduces production cost.

The invention discloses a production method of furfural, and particularly a novel environmentally-friendly production process for furfural. The method comprises process steps, namely smashing raw materials, adding diluted acid for stirring, exchanging heat and distilling, exchanging heat, dehydrogenating and washing with water, distilling, exchanging heat, discharging a finished product and the like. The process has the advantages that a small amount of waste water is produced in a production process, environmental protection is facilitated, the amount of vapor is reduced, the hydrolyzation time is shortened, the yield is high, the washing process of the finished product is free from neutralization, sodium bicarbonate is saved, the labor intensity of staffs is lowered, waste gas and dust are not produced in the production process, and the like.

The invention discloses a preparation method of a crayfish feed with rice bran polysaccharide. The preparation method comprises the following steps of extracting the rice bran polysaccharide: extruding and puffing rice bran meal, performing enzymolysis with complex enzymes, then performing ultrasonic processing and performing ethanol precipitation to prepare the rice bran polysaccharide; hydrolyzing Tilapia offal: fermenting the Tilapia offal with natto bacillus, and performing hydrolyzing to prepare antibacterial grease peptide; preparing soybean meal short chain polypeptide through hydrolyzing with two enzymes; and performing blending: blending the rice bran polysaccharide with the antibacterial grease peptide, the soybean meal short chain polypeptide and other ingredients to prepare thecrayfish feed. The preparation method has the beneficial effects of being reasonable in compounding ratio and comprehensive and rich in nutrients, and contains nutrient substances of protein, amino acids, fatty acids, short chain polypeptide and the like required for growth and development of crayfish. The rice bran polysaccharide can greatly strengthen the immunocompetence of the crayfish, the stress resistance of the crayfish can be improved, and the constitutions can be strengthened. The feed also has good food calling properties and palatability, and can promote the ingestion of the crayfish, improve the raising efficiency and reduce the breeding cost.

Disclosed is a method to prepare and treat keratin from animal hair with ultrasonic, including the procedures of preparing keratin solution through deoxidizing hydrolyzation or oxidizing hydrolyzation, ultrasonic treatment and drying. Compared with the current methods of preparing keratin solution from animal hair, the method introduces ultrasonic to process the keratin solution which is prepared through deoxidizing hydrolyzation or oxidizing hydrolyzation, and is simple in operation, shortens hydrolyzation time and reduces consumption of the chemicals, thus reducing environment pollution. The method is applicable to the preparation of keratin from animal hair. The keratin can be used in the preparation of cosmetics and animal hair keratin composite film material which can be used to replace current plastic package bags; after use, the animal hair keratin composite film material is buried in the ground and can be degradated quickly into fertilizer, thus reducing environment pollution.

The invention relates to a preparation method of ethyl 6-oxo-8-chloro-caprylate, which comprises the steps of: carrying out addition reaction on ethyl 6-chloro-6-oxo-caproate and ethylene in dichloroethane solution with aluminum trichloride as a catalyst; mixing the addition reaction liquid with water in a hydrolysis kettle; introducing the mixture of the reaction liquid and water into a graphite condenser for cooling through a circulating pump; returning to the hydrolysis kettle; and continuously circulating until hydrolysis is finished. The method solves the technical problems caused by hydrolysis of the addition product, effectively controls the hydrolysis reaction temperature, shortens the hydrolysis reaction time, increases the reaction yield by about 10% and saves the water consumed by the hydrolysis reaction by 50%.