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

A nutritive flavouring is prepared from the hydrolytic liquid of fresh-water fish protein, flavouring, AA, DHA, taurine, sodium glutamate, I+G, salt, granular sugar, malt dextrin, emulsifier and stabilizer proportionally.

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 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 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 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 provides a pretreatment method capable of removing an antibiotic in antibiotic pharmaceutical wastewater and an antibiotic pharmaceutical wastewater treatment method. The pretreatment method comprises the steps of adding a solid acid to the antibiotic pharmaceutical wastewater and carrying out hydrolysis treatment on residual antibiotic in the antibiotic pharmaceutical wastewater. According to the method, the concentration of the antibiotic in the antibiotic pharmaceutical wastewater can be significantly reduced, an active functional group in an antibiotic molecule is hydrolyzed and destroyed, inhibition of the high-concentration antibiotic on microorganisms is reduced, the difficulty of subsequent biochemical wastewater treatment is reduced, drug-resistant bacteria and drug-resistant genes in subsequent biochemical treatment are reduced, and the treated antibiotic pharmaceutical wastewater can be connected to the subsequent biochemical treatment process for treatment.

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 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 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.

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 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.