18results about How to "Increase specific volume" patented technology

The present invention discloses an engineered Trichoderma reesei for producing lipase, and a construction method and application thereof, and belongs to the fields of molecular biology and biotechnology. The engineered Trichoderma reesei heterologously expresses a lipase having an amino acid sequence as shown in SEQ ID NO.1; in the engineered Trichoderma reesei, the genes of the original cellulases cbh1 and cbh2 and xylanases xyn1 and xyn2 in Trichoderma reesei are replaced in sequence with genes encoding the lipase; the nucleotide sequence of the gene encoding the lipase is shown in SEQ ID NO.2. The present invention successfully constructs an engineered Trichoderma reesei strain that secretes and expresses lipase. The engineered strain can be used for the production of food-grade lipase, and the produced lipase meets food safety standards, and can significantly improve the specific volume and whiteness of baked goods (such as bread), which will be more suitable for actual food industry needs.

The invention provides a preparation method of a special aluminum electrolytic capacitor for a low-temperature-resistant detonator trigger, and the method comprises the following steps: cutting a positive electrode foil and a negative electrode foil, and riveting the cut positive electrode foil and negative electrode foil with a positive guide pin and a negative guide pin; placing electrolytic paper between the riveted positive electrode foil and negative electrode foil, winding the electrolytic paper to form a core package, injecting electrolyte into the core package, and sealing the core package in an aluminum shell by using colloidal particles to obtain a semi-finished capacitor; and cleaning the semi-finished product capacitor, sleeving, and sequentially carrying out primary aging sorting, secondary aging sorting, appearance observation and inspection to obtain the capacitor. The preparation method of the aluminum electrolytic capacitor special for the low-temperature-resistant detonator trigger is simple in production process, common in material and low in price, and the prepared aluminum electrolytic capacitor is excellent in electrical performance, wide in working temperature range and small in size.

The invention belongs to the technical field of electrode materials, and particularly relates to an electrode foil, a preparation method thereof and an aluminum electrolytic capacitor, and the preparation method of the electrode foil comprises the steps: carrying out the formation of a corrosion foil, and forming an aluminum oxide film on the surface of the corrosion foil; forming a nano-porous silicon dioxide film on the surface of the aluminum oxide film to obtain an electrode foil with an aluminum oxide-silicon dioxide double-layer composite oxide film; and sequentially carrying out phosphating treatment and annealing treatment on the electrode foil. According to the preparation method, after the corrosion foil is subjected to formation treatment to form the Al2O3 film, the nano-porous SiO2 film is formed on the surface of the Al2O3 film, the SiO2 film is subjected to phosphating treatment to contain phosphorus elements, the phosphorus elements are uniformly diffused into the SiO2 film, a double-layer composite oxidation film with the Al2O3 inner layer and the SiO2 outer layer is obtained, and the specific volume, the hydration resistance and the corrosion resistance of the low-voltage electrode foil are improved.

The invention discloses a production method for anodizing, chambering and corroding an electrode foil, belongs to the technical field of electrode foils, and adopts ultrasonic waves to generate a cavitation effect in liquid, promote a corrosion process and improve uniform hole forming and performance of an aluminum foil. A domestic plain aluminum foil of 132 microns is used, and proper holes are obtained through three-stage treatment of alkali washing, hole-forming corrosion and chambering corrosion and hole-forming corrosion of a mixed solution composed of sulfuric acid and hydrochloric acid. The polyethyleneimine is added into a reaming phosphoric acid solution to slow down corrosion, aluminum foil holes subjected to three-stage treatment contain Cl <->, metal impurities, phosphoric acid and the like, corrosion is caused to products, and the quality of oxidation films is reduced. Impurities are cleaned through dilute nitric acid, a compact and firm oxidation film is obtained, then sol-gel coating and subsequent formation treatment are carried out, the anode formation chambering corrosion electrode foil is obtained, and the specific capacitance of the foil is effectively improved.

The invention discloses corrosion aluminum powder and a preparation method and application thereof, and the preparation method comprises the following steps: S1, carrying out plasma passivation treatment on aluminum powder to obtain surface modified aluminum powder with an amorphous aluminum oxide layer; and S2, carrying out surface micro-corrosion on the surface modified aluminum powder, and then drying and grading to obtain the corroded aluminum powder. The method comprises the following steps: forming an amorphous aluminum oxide layer on the surface of aluminum powder; and then micro-corrosion is carried out on the amorphous aluminum oxide layer, a rich pore structure is formed on the amorphous aluminum oxide layer, and after corrosion is completed, the amorphous aluminum oxide layer can be automatically formed on the corrosion surface again. The surface of the obtained corrosion aluminum powder is completely wrapped by the amorphous aluminum oxide layer, so that the leakage current can be greatly reduced, and the electrochemical stability of the anode foil is greatly improved; the porous carbon has certain roughness and rich pore structures, and the specific surface area and the specific volume are greatly increased; the micro-corrosion has no negative influence on the mechanical strength of the aluminum powder, and ensures that no micro-crack appears on the surface of the anode foil.

The invention relates to the field of food processing, and particularly discloses a bread fermentation accelerant and application thereof in bread baking. The bread fermentation accelerant comprises isomaltooligosacharide, galactooligosaccharide and fructo-oligosaccharide in a mass ratio of 5: (2-4): (1-2). The bread fermentation accelerant has the advantages that the bread fermentation accelerant can be used for bread with the high dietary fiber content, the fermentation capacity of the bread with the high dietary fiber content is improved, the specific volume of the bread is increased, and the bread is full and complete in appearance, soft and elastic in texture, spongy in tissue, uniform in air hole, good in ductility, golden in color and luster, fragrant, soft and delicious.

The invention belongs to the technical field of positive electrode materials, and particularly relates to a composite-phase ternary positive electrode material and a preparation method and application thereof. The preparation method of the composite-phase ternary positive electrode material comprises the following steps: S1, mixing a ternary positive electrode material precursor with a first lithium source, and sintering to obtain a first sintered product; s2, mixing the primary sintered product, a sodium source and a cobalt source, and calcining to obtain a secondary sintered product; and S3, mixing the secondary burning product with a second lithium source, and carrying out ion exchange reaction to obtain the composite-phase ternary positive electrode material, the battery containing the composite-phase ternary positive electrode material prepared by the invention has excellent specific capacity, coulombic efficiency and cycle performance.

The application discloses an application of myrtenal in preparation of an anti-leukemia drug and belongs to the technical field of drug application. A structural formula of the myrtenal is shown in the following. The myrtenal (WRT-4) has a significant proliferation inhibition and pro-apoptosis effect on leukemia cells HEL through in-vitro experiments, and the effect is in a concentration-dependent manner; the mechanism is that the WRT-4 can down-regulate the expression of anti-apoptotic proteins Bcl-2 and Bcl-xl, up-regulate the expression of pro-apoptotic protein BID, and then activate Caspase 9 and Caspase 3 to induce leukemia cell apoptosis. In-vivo pharmacodynamic experiments show that the WRT-4 can significantly reduce the volume and weight of spleens of erythroleukemia model mice, improve the hematocrit and effectively improve the spleen tissue structure. The application provides a new active substance source for research and development of anti-leukemia drugs.

The present invention discloses an electrode material of a biomass-derived carbon composite transition metal sulfide solid solution, comprising a biomass-derived carbon skeleton with a three-dimensional network hollow tubular structure and transition metal sulfide solid solution nanoparticles loaded on the carbon skeleton; the electrode material has a chemical composition represented by ABX@BDC, wherein A and B are independently selected from one of transition metal elements Fe, Co, Ni, Cu, Mn, Zn and Sn, X is a non-metallic element S or Se, and BDC is a biomass-derived carbon skeleton. The electrode material prepared by the present invention has high specific capacity, excellent cycle stability and rate performance. And it has attractive reversible capacity, ultra-long cycle life and good structural stability at ultra-high rate. The raw material resources are abundant, the cost is low, the preparation process is simple, the time consumption is short, the reaction conditions are also very easy to achieve, and it can be mass-produced, convenient for commercial application, and shows great application prospects in sodium ion batteries.

The present invention relates to the technical field of manufacturing electrode foil for aluminum electrolytic capacitors, and specifically to a method for preparing electrode foil for low-defect and high-capacity aluminum electrolytic capacitors. The method for preparing electrode foil for low-defect and high-capacity aluminum electrolytic capacitors of the present invention comprises the following steps: (1) pickling, (2) first pulse treatment, (3) chemical formation treatment, (4) heat treatment, (5) second pulse cleaning, (6) chemical formation repair treatment, and (7) passivation. The electrode foil for low-defect and high-capacity aluminum electrolytic capacitors of the present invention removes the hydrated aluminum oxide film generated on the surface of the corroded foil in the air and the hydrated aluminum oxide film produced in the chemical formation process by pulse laser cleaning, and performs oxide film repair in a chemical formation repair solution, thereby promoting the formation of a high-crystallinity anodized film, reducing defects, and improving density.

The invention provides sour dough, a sour dough steamed bun and a preparation method and application thereof, and belongs to the technical field of food manufacturing. The sour dough provided by the invention is prepared from 500 parts of wheat flour, 0.05-0.2 part of lactobacillus reuteri and 260 parts of water, and the preparation method of the sour dough comprises the following steps: mixing the wheat flour, the lactobacillus reuteri and the water according to the formula ratio, kneading to form dough, and fermenting for 6.5-10 hours under the conditions that the temperature is 33-40 DEG C and the humidity is 80%-95% to obtain the sour dough. Compared with steamed buns prepared by traditional methods and steamed buns prepared by other kinds of sour dough, the sour dough steamed buns prepared by the sour dough provided by the invention have the advantages that the specific volume is larger, the content of rapidly digestible starch is higher, the speed of hydrolyzing glucose is higher, and the sour dough steamed buns have the effect of rapidly providing energy for human bodies.

This invention belongs to the field of electrode material technology, specifically relating to an anode foil, its preparation method, and an aluminum electrolytic capacitor. The preparation method of the anode foil includes performing a secondary porosimetry etching on the aluminum foil after primary porosimetry etching. The secondary porosimetry etching includes multiple stages of porosimetry etching, with a mid-treatment process between each adjacent stage. This preparation method involves multiple stages of porosimetry etching, and the mid-treatment process between each adjacent stage effectively increases the pore size of the etched foil, making it suitable for preparing ultra-high voltage anode foils with low loss and high specific capacitance.

The present invention relates to the technical field of aluminum electrolytic capacitors, and specifically to a method for preparing a high-strength sintered foil for aluminum electrolytic capacitors. The method for preparing a high-strength sintered foil for aluminum electrolytic capacitors of the present invention comprises the following steps: 1. Evenly mix modified carbon quantum dot powder and aluminum powder, and add a solvent and stir evenly to obtain a modified aluminum powder slurry; 2. Further add a binder and an additive and stir evenly to obtain a mixed slurry; 3. Evenly coat the slurry on the surface of an aluminum foil substrate and solidify it; 3. Sinter the obtained aluminum foil substrate; 4. Chemically form the sintered foil to obtain an anode powder sintered foil. Compared with the prior art, the high-strength sintered foil for aluminum electrolytic capacitors of the present invention avoids carbon residue while ensuring higher capacity and mechanical strength, thereby improving the dielectric properties of the sintered foil.

The utility model discloses a tantalum capacitor shell packaging structure that improves mechanical strength relates to tantalum capacitor shell packaging technical field, including outer layer packaging shell and middle layer packaging shell, the inside of outer layer packaging shell is provided with middle layer packaging shell, and the inside of middle layer packaging shell is provided with inner layer packaging shell, and the top surface of outer layer packaging shell is provided with first reinforcing rib, and the left and right sides of outer layer packaging shell all are provided with second reinforcing rib. This tantalum capacitor shell packaging structure that improves mechanical strength, through being provided with the outer layer packaging shell of layer -by -layer nesting structure, middle layer packaging shell, inner layer packaging shell, utilize the cooperation of the structure between three, can provide structural protection for internal component as far as possible, to guarantee the operation stability of whole, cooperate the structural setting of base, first reinforcing rib and second reinforcing rib, can further guarantee the mechanical strength of whole packaging structure like this.

The invention discloses a method for making pre-baked frozen bread by using lactic acid bacteria to ferment sour dough, and belongs to the technical field of food processing. The method is characterized by comprising the following process steps: (1) preparation and storage of sour dough: S10, inoculated fermentation of the sour dough; S20, enlarged culture fermentation of the sour dough; S30, preparation of the sour dough; and S40, storage of the sour dough. And (2) S50, making the pre-baked frozen bread based on the sour dough: uniformly mixing the sour dough with other ingredients, kneading dough, forming, fermenting, baking, packaging, freezing and re-baking. According to the method for making the pre-baked frozen bread by using the sour dough fermentation technology, the flavor characteristics of the pre-baked frozen bread are effectively improved, the tissue structure and freshness of the bread are remarkably improved and the aging rate is delayed through the generation of lactobacillus fermentation metabolites including organic acids and flavor compound precursors (free amino acids) in the sour dough.

The invention belongs to the technical field of food, and particularly relates to a preparation method and application of sour dough with a healthy effect. The sour dough consists of the following raw materials: wheat flour, lactobacillus fermentum and water in a mass ratio of 500: (0.1-0.4): 260. The sour dough provided by the invention has a remarkable inhibition effect on alpha-amylase, the specific volume and the texture of the prepared sour dough steamed bun are improved, the preparation process is simple, and the sour dough steamed bun has a wide application prospect in the aspect of reducing postprandial blood sugar rise.

The invention discloses fermented lactobacillus and its application in the preparation of whole wheat sour dough bread fortified with goat milk; the deposit number of the fermented lactobacillus is GDMCC 62472. The preparation of whole wheat sour dough toast bread fortified with goat milk is to first activate the fermented lactobacillus, dissolve the activated fermented lactobacillus in water and dilute it to prepare an inoculum; whole wheat flour and the inoculum are mixed to prepare whole wheat sour dough, whole wheat sour dough, whole wheat flour, sugar, yeast, salt and water are mixed, and the dough is stirred evenly to prepare the dough, and the dough is put into an oven for baking after secondary proofing after preliminary fermentation and shaping, and the finished bread is obtained by cooling after baking. After adding the sour dough fermented with goat milk and fermented lactobacillus M4, the baking properties such as specific volume, hardness and texture are significantly improved, the shelf life is extended, the characteristics of bread flavor substances are significantly improved, and the estimated glycemic index of bread is reduced.

The present application relates to the technical field of electrode foil production, and particularly relates to a formation method of small piece wide electrode foil for high-density patch capacitors, which comprises the following steps: S1, surface pretreatment: placing an aluminum foil in a pretreatment liquid diluent at 60-70 DEG C, and performing ultrasonic treatment after soaking; performing water and treatment in pure water at 90-95 DEG C for 12-15 min after washing, and completing the surface pretreatment after air drying; S2, first-stage formation; S3, second-stage formation; and S4, third-stage formation. The formation method of small piece wide electrode foil for high-density patch capacitors is provided to solve the problems of the small piece wide electrode foil formation process in the prior art, such as the problem that high specific capacity and low leakage current cannot be considered together, and the problem of poor bending performance.