283results about How to "Fully hydrolyzed" patented technology

The hydrophobic SiO2 aerogel preparing process is one normal pressure one-step process. The preparation process includes mixing methyl trialkoxyl silane, lower alcohol, water and silicon sol in the volume ratio of 0.5-4 to 2-16 to 1-8 to 1 inside one sealed container; regulating pH value to 4-6, stirring 1-6 hr and letting stand at room temperature for 2-6 hr; regulating pH value to 7-10, sealing, letting stand inside stove at 30-60 deg.c for 4-42 hr to prepare cross-linked SiO2 mixed alcohol gel; ageing for 24 hr, soaking with alcohol or acetone for three times of 4 hr each; and finally stoving inside a stove at 60-80 deg.c for 12-36 hr to prepare the hydrophobic SiO2 aerogel. The prepared hydrophobic SiO2 aerogel has excellent performance: density of 100-600 kg/cu m, specific surface area of 340.06-436.86 sq m/g and water contact angle of 127-141 deg.

The invention discloses a fabric desizing agent. The fabric desizing agent consists of the following components in parts by weight: 10-20 parts of amylase, 3-5 parts of sodium persulfate, 2-6 parts of methyl cellulose, 0.2-0.6 part of sodium hydroxide, 10-20 parts of butyl acetate, 20-40 parts of isopropyl alcohol, 1-3 parts of butyl phthalate and 100-160 parts of water. Compared with the prior art, the fabric desizing agent has the following beneficial effects of (1) being good in desizing effect and enabling size to be fully hydrolyzed without damaging a fabric, and (2) removing impurities and minerals on the fiber, and improving the whiteness and hydroscopicity of a semi-finished product of the fabric.

The invention relates to a cross-linking cellulose ultrafiltration membrane and a preparation method thereof. The cross-linking cellulose ultrafiltration membrane comprises a non-woven fabric layer and a cross-linking cellulose layer, wherein the non-woven fabric is selected from a polyester non-woven fabric, a polypropylene non-woven fabric, a polyethylene non-woven fabric and a polypropylene and polyethylene polymer non-woven fabric; the cross-linking cellulose is a product obtained by crosslinking and polymerizing glutaric dialdehyde, cellulose and polyvinyl alcohol. According to the invention, the hydroxy hydrolyzed from cellulose ester and the polyvinyl alcohol are crosslinked by adopting a cross-linking technology and utilizing the characteristics of the cellulose and the polyvinyl alcohol. The process disclosed by the invention is simple in production process, and shortens the production time and reduces the production cost by integrating a cross-linking process and a membrane drying process, thereby realizing the enhancement of alkali resistance property.

The invention relates to a method for preparing queen bee embryo peptide by an enzyme hydrolysis method. The method comprises the steps of carrying out sample pretreatment, degreasing queen bee larva powder, preparing queen bee larva powder sample solution, treating the queen bee larva powder sample solution by ultrasonic waves, carrying out enzymatic hydrolysis reaction on the queen bee larva powder sample solution, heating enzymatic hydrolysate in a boiling water bath for 20min to realize enzyme deactivation, cooing to room temperature, adjusting pH value of the enzymatic hydrolysate to 7.0, centrifuging to take out supernate, and drying the supernate to obtain the hydrolyzed queen bee embryo powder. The prepared queen bee embryo polypeptide can be used for preparing health products for improving the function of human body, and more important, the bioactive polypeptides beneficial to human body can be screened out from the hydrolyzed queen bee embryo polypeptide.

The invention relates to a fabric desizing agent. The fabric desizing agent is characterized by comprising the following components in parts by weight: 10-20 parts of amylase, 3-5 parts of sodium persulfate, 2-6 parts of methylcellulose, 15-25 parts of sodium chloride, 10-20 parts of n-butyl acetate, 10-20 parts of isopropanol, 1-3 parts of phthalic acid dibutyl ester, 10-25 parts of 12% hydrogen peroxide, 4-6 parts of argon sodium bromate, 5-10 parts of talcum powder, 5-8 parts of polyvinyl alcohol, and 100-160 parts of water. Compared with the prior art, the fabric desizing agent has the beneficial effects of having good desizing effect, fully hydrolyzing sizing agent without damaging the fabric, being capable of removing impurities and mineral substances on fibers, and improving whiteness and water absorption of half-finished product of the fabric.

The invention discloses a preparation method of whitening complex protein peptide enzymatic hydrolysate. The preparation method includes the following steps: (1) preparing raw materials; (2) preparingprotein enzymatic hydrolysate, and performing enzymolysis by using alkaline protease, papain and neutral protease through two steps, wherein the using amount of the alkaline protease is 1-3% of the dry weight of material liquid, the using amount of the papain is 0.5-1.5% of the dry weight of the material liquid and the using amount of the neutral protease is 1-3% of the dry weight of the materialliquid; (3) performing centrifugation; (4) performing decolorization; and (5) performing filtering so as to obtain the whitening complex protein peptide enzymatic hydrolysate. The full enzymolysis ofeach protein can be achieved through the preparation method, and active peptide can be reserved, so that the obtained complex protein peptide can be easily and rapidly absorbed, nutrition can be rapidly supplemented, and the complex protein peptide has the functions of promoting skin whitening. A whitening complex protein peptide beverage containing the whitening complex protein peptide enzymatichydrolysate and a preparation method of the whitening complex protein peptide beverage are also provided. The whitening complex protein peptide beverage has the effects of significantly promoting skin whitening and is tasty.

The invention relates to a making method of a high-organic selenium cardamine violifolia selenium polypeptide. The making method comprises the following steps of: S1, performing pretreatment on a rawmaterial: selecting dried cardamine violifolia powder as a raw material for production, performing soaking with ethano for decolorization, performing filtering for removing impurities, and then performing pretreatment with a mixture of cellulolytic enzymes and pectinase to obtain an enzymatic hydrolysate for standby application; S2, performing double-enzyme composite enzymolysis: firstly adding alkaline protease in a supernatant after pretreatment in step S1 for enzymolysis, performing enzyme deactivation, performing cooling to 50 DEG C, adjusting the pH with hydrochloric acid to 6.0-8.0, adding neutral protease, and performing enzymolysis to obtain an enzymatic hydrolysate; and S3, performing enzyme deactivation and peptide solution separation: boiling over the enzymatic hydrolysate to achieve enzyme deactivation, and performing standing to obtain a clear transparent peptide solution in the lower layer. The making method disclosed by the invention has the advantages that the cardamineviolifolia is used a core raw material, and the cellulolytic enzymes and the pectinase are used for pretreatment before enzymolysis, so that the impurities in the cardamine violifolia are effectivelyremoved and the protein extraction rate of the cardamine violifolia is increased; and then a multi-step double-enzyme enzymolysis method is used for enzymolysis, the content of the selenium polypeptide is higher, and the molecular weight of the selenium polypeptide is smaller.

The invention discloses a method for extracting proteins and chitin from shrimp heads and shrimp shells by pediococcus acidilactici, which comprises the following steps: (1) selecting fresh or frozen shrimp heads and shrimp shells, and unfreezing the frozen shrimp heads and the frozen shrimp shells; (2) adding carbon sources into the shrimp heads and the shrimp shells; (3) inoculating the pediococcus acidilactici; (4) carrying out heat-insulation fermentation; (5) separating fermentation liquid from residue after the fermentation is completed, and obtaining protein powder after the fermentation liquid is dried; and (6) carrying out diluted acid soaking and decolourization on fermentation residue to obtain chitin. Through the method of the invention, the proteins and the chitin in the shrimp heads and the shrimp shells can be simultaneously extracted out, and the obtained hydrolyzed proteins do not have stinking odor, and have rich calcium lactate and other mineral substances. The method of the invention has the advantages of simple operation method, production cost reduction and environmental pollution reduction, and rich nutritional ingredients contained in the shrimp heads and the shrimp shells can be sufficiently utilized.

The invention belongs to the technical field of hydrogen storage materials, and particularly relates to a preparation method of a metal oxide composite magnesium hydride hydrogen storage material. Themethod comprises the steps that magnesium hydride serves as a base material, metal oxide particles are mixed, the mass percentage content of metal oxide in the mixture is 1%-8%, and the mixture is subjected to hydrogen filling ball milling in a ball mill to obtain the metal oxide composite magnesium hydride hydrogen storage material. By adding the nanoscale metal oxide particles, the hydrogenation speed of the magnesium-based composite powder in the hydrogen charging ball milling process can be increased, and reduction of the particle size of magnesium hydride is facilitated; the nanocrystalline MgH2 is coated with the metal oxide to form a core-shell structure with an excellent synergistic effect, the core-shell structure has a good catalytic effect and remarkable dynamic performance, the hydrogen storage reaction speed can be improved, microcell heat release can be controlled, agglomeration of a hydrogen storage reactant Mg (OH) 2 can be effectively eliminated through the metal oxide, and the hydrogen storage efficiency is improved. Therefore, the purpose of sufficient hydrolysis reaction is achieved.

The invention discloses a method for hydrolyzing biomasses in two steps by utilizing a carbon-based solid acid catalyst. The method comprises the following steps: (1) putting the carbon-based solid acid catalyst and biomass materials into a reactor at the mass ratio of (2 to 5) : 1; adding water into the reactor at the mass ratio of the biomass materials of the water of 1 to (10 to 40); after heating a mixture to 120 DEG C to 150 DEG C, reacting for 2 to 3 hours; separating hydrolysate, discharging the hydrolysate into a storage tank for storing pentose, and storing; (2) adding water into the reactor at the mass ratio of the biomass materials of the water of 1 : (10 to 40); after heating the mixture to 140 DEG C to 180 DEG C, reacting for 2 to 4 hours; separating hydrolysate, discharging the hydrolysate into a storage tank for storing hexose, and storing; (3) emptying the materials in the reactor and preparing for the next reaction cycle. According to the method disclosed by the invention, hemicellulose and cellulose in the biomass materials can be effectively catalyzed and be subjected to a hydrolysis reaction, and the method has the characteristics of high hydrolysis rate and high sugar yield.

The method for preparing soybean isoflavone aglycone by using enzyme method to hydrolyze soybean isoflavone glycoside glycosyl includes the following steps: using the enzyme capable of hydrolyzing soybean isoflavone glycoside glycosyl, mixing said enzyme, soybean isoflavone glycoside and buffer solution to make reaction for 1-40 hr., its reaction temp. is 4-75 deg.C and pH value is 3-9, so as to extract soybean isoflavone aglycone. Said invention not only can use enzyme to hydrolyze monoglycoside-soybean glycoside and genistein glycoside and convert them into correspondent aglycone, but also can use enzyme to hydrolyze soybean glycoside and genistein glycoside mixed glycoside and convent them into the mixed aglycone. Said product can be used as raw material for making medicine and health-care product.

The invention discloses a preparation method of compound protein peptide enzymatic hydrolysate capable of enhancing immunity. The preparation method comprises the following steps of (1) preparing rawmaterials; (2) preparing plant protein enzymatic hydrolysate, wherein alkaline protease, flavourzyme and papain are used for enzymolysis in two steps; (3) preparing an animal protein enzymatic hydrolysate, wherein alkaline protease, trypsin and neutral protease are used for enzymolysis in two steps; (4) centrifuging; and (5) decolorizing and filtering to obtain the compound protein peptide enzymatic hydrolysate capable of enhancing immunity. The invention also provides a compound protein peptide beverage capable of enhancing immunity containing the compound protein peptide enzymatic hydrolysate, and a preparation method of the compound protein peptide beverage capable of enhancing immunity. Each protein can be fully subjected to enzymolysis, and the active peptide is reserved, so that theobtained compound protein peptide can be easily and quickly absorbed, and has the effects of quickly supplementing nutrition and improving immunity; the compound protein peptide beverage capable of enhancing immunity has a remarkable immunity-enhancing effect and is relatively delicious.

The invention relates to complex enzyme and application thereof, which belongs to the technical field of the brewing of distillate spirits. The complex enzyme comprises the following enzyme preparations and yeasts: 200 to 225 U/g of saccharifying enzyme (wheat), 80 to 100 IU/g of pullulanase (wheat), 10 to 15 IU/g of acid protease (wheat), 15 to 20 IU/g of cellulose (wheat), 15 to 20 IU/g of beta-dextranase (wheat), 5 to 10 IU/g of beta-mannase (wheat), 10 to 15 IU/g of xylanase (wheat), 5 to 10 IU/g of phytase (wheat), 5 to 10 IU/g of pectase (wheat), 1.5 to 2 percent of high temperature resistant saccharomyces cerevisiae (W/W), and 1 to 1.5 percent of aroma-producing yeast (W/W). The complex enzyme is applied as an additive to the production of wheat type distillate spirits. The complex enzyme can increase fermentable sugar, improve the utilization rate of raw materials, and improve the distillation yield; at the same time, the complex enzyme releases and synthesizes more flavor substances, and has the advantages of improving the quality of the distilled spirits and increasing the high-quality product rate of xiaoqu distillate spirits and so on; and the complex enzyme can be widely applied to the production of wheat type distillate spirits.