58results about How to "Aids in synthesis" patented technology

The invention provides a method for preparing a boron nitride nanowire by cracking of a polymer. The method comprises the following steps: synthesizing a polyalkylamino borazine precursor according to the prior art: grinding the precursor under the protective condition of inert gas and screening the grinded precursor through a 1000-mesh sieve; placing the precursor powder in a graphite boat, rising the temperature to 100-200 DEG C at the speed of 3-10 DEG C/min in the presence of high-pure nitrogen in a tubular furnace, and then insulating for 1-3 hours; rising the temperature to 500-700 DEG C at the speed of 3-10 DEG/min, and then insulating for 1-3 hours; at the atmosphere of nitrogen, heating to 1000-1600 DEG C at the rising speed of 3-10 DEG C/min, then insulating for 0.5-5 hours, and then cooling along with the furnace so as to obtain the boron nitride nanowire. The diameter of the nanowire prepared by the method is about 13-18 nm and is evenly distributed, no catalyst is used, preparation temperature is low, and energy is saved, thereby reducing the cost; and the method is simple in process, is convenient for operation and is easy to achieve large scale; and as a structure reinforced material, a semiconductor material, a wave-transparent material and the like, the prepared boron nitride nanowire has a good prospect of application.

The invention relates to a method for increasing pulullan output through fed-batch fermentation, which comprises the following steps: culturing seeds, performing fermentation culture and separating pulullan; continuously feeding a fed-batch solution after fermenting for 24-28 hours, controlling the residual sugar of a broth to maintain at 6-12g/L, supplementing 0.5-2g/L of amino acid solution for once by every two hours, wherein the total fermentation period is 65-67 hours. Aiming at defects of long period and low substrate conversion rate during a process of fermentation of aureobasidium pullulans with a preservation number of No. 7055 to produce pulullan, a proper amount of amino acid is continuously fed during the fermentation process for synthesis of pullulan, substrate conversion rate is increased, operation is convenient, effect is obvious, fermentation period is greatly shortened, and cost of pullulan can be reduced.

The invention relates to a reinforced nutrition food-nutrition soymilk powder of a children meal accompany series for infants and children to eat. The soymilk powder of full cream is taken as the main material and a plurality of auxiliary materials like vitamins and minerals are added to manufacture the food by scientific preparation. The nutrition powder can supplement a plurality of nutrition matters needed by the children of various ages, equally provides the needed nutrition for children in every day, can promote a children antibody from generating, enhances the immunity of an organism to viruses, is beneficial to the demands of developing like the brains, bones and teeth of the children, can promote the composing of hematoglobin and myoglobin inside the bodies of the children, reduces anemia and strengthens the physique of the children; the product simultaneously has the advantages of simple preparation technique, reasonable material component, stable quality, low cost; besides, the food is applicable for infant and the children of school age to eat.

The invention relates to a fermentation promoter for improving the output of gentamycin C1a, and an adding method thereof, and belongs to the technical field of fermentation engineering. The fermentation promoter comprises, by mass, 20-50% of D-xylose, 10-30% of N-acetylglucosamine, 1-5% of ammonium ferrous sulfate, 5-10% of betaine, 0.01-0.05% of 2-deoxystreptamine, and the balance of deionized water. 0.001-0.005% Of the fermentation promoter is added to a fermentation medium or an additional medium, and then participates in the fermentation process in a single or combined form. The fermentation promoter optimizes the fermentation environment, promotes metabolism of thalluses, is simply and effectively added, enhances the thallus fermentation performance, and improves the output by 46%.

The invention relates to the technical field of preparation of lactic acid bacteria products, and provides a preparation process of lactobacillus bulgaricus powder with high fermentation activity. The process comprises the following steps: S1, strain activation: under a sterile condition, after a strain preserved at a low temperature is recovered to room temperature, inoculating 12-15% sterile skimmed milk with an inoculum size of 1-3%, and culturing; S2, inoculating strains into a fermentation culture medium according to the inoculum size of 1%-3%, and performing fermentation culture; S3, centrifuging and concentrating to obtain bacterial sludge; S4, embedding a first layer of antioxidant; S5, embedding with a second layer of anti-freezing embedding protective agent; S6, liquid nitrogen cryogenic granulation: spraying the emulsion obtained in the step S5 into liquid nitrogen by using liquid nitrogen cryogenic granulation equipment to instantly form frozen particles, recovering the frozen particles, and transferring the frozen particles into a freeze dryer for drying; and S7, collecting freeze-dried particles obtained in S6, and crushing the freeze-dried particles into bacterial powder. Through the technical scheme, the problem of low fermentation activity of lactobacillus bulgaricus industrial bacterial powder in the prior art is solved.

The invention discloses a BNT-BST-KNN anti-ferroelectric energy-storage ceramic and a preparation method thereof, which belong to the technical field of functional ceramic. A molecular formula is (1-x)Bi1/2Na1/2TiO3 xBa1/2Sr1/2TiO3-0.05KNaNbO3, wherein x is 0.01, 0.03, 0.05 or 0.07. The BNT-BST-KNN anti-ferroelectric energy-storage ceramic solves the problems that La<3+>-doped electroceramic reduces the electric field hysteresis and increases the phase-transition electric field of a material, and the anti-ferroelectric phase of B site Zr<2+> element-doped electroceramic is unstable; the added Sr element is helpful for enlarging a stable area of the tetragonal anti-ferroelectric phase, and the electricity performance of the BNT-BST-KNN anti-ferroelectric energy-storage ceramic can be changed by doping BaSrTiO3 and KNaNbO3.

The invention provides a method for processing rice with remained germs into three sections, a product and applications, and relates to a method for processing rice grains with rice husks or brown rice grains with rice husks removed, and further relates to a product prepared with the processing method and applications of the product. The defect that germs are retained incompletely of germ rice obtained by transversely grinding the rice with remained germs at present is overcome. The method comprises the following steps: the rice grains or the brown rice grains are divided into three sections in the length direction by manual or mechanical processing, the rice grains of the sections at two ends are equal in length and the rice grains at one of the sections at two ends contain germs; the rice grains in the middle section are gathered together, and the rice grains at the two ends are gathered together; the rice grains in the middle section are subjected to aleurone layer removal; meanwhile, rice husks remaining on the rice grains at two ends are removed. The provided product comprises the rice grains in the middle section and the rice grains at two ends, the rice grains in the middlesection are subjected to aleurone layer removal by grinding, and the rice grains at two ends are subjected to husk removal and are hemispherical, conical or flat conical. The invention further provides the applications of the product to steaming of rice and cooking of porridge or rice paste.

The invention relates to the technical field of silicone rubber production and relates a continuous production system and method of polysiloxane. The continuous production system for polysiloxane comprises a premixer, a polymerization type double-screw extruder connected with a discharge hole of the premixer, a first vacuumizing system connected with an exhaust port of the polymerization type double-screw extruder, a static mixer connected with a discharge hole of the polymerization type double-screw extruder, a falling strip type devolatilization device connected with a discharge hole of thestatic mixer, a second vacuumizing system connected with a vacuum hole of the strip falling type devolatilization device, a devolatilization type double-screw extruder connected with a discharge holeof the strip falling type devolatilization device, and a third vacuumizing system connected with a vacuum port of the devolatilization type double-screw extruder. Finally, the produced polysiloxane isrelatively high in viscosity and relatively low in volatile component.

The invention belongs to the technical field of grass seed detoxifying treatment, and discloses a grass seed detoxifying treatment method. The grass seed detoxifying treatment method comprises the steps of collecting grass seeds of candidate plants, removing pods or seed shells of the grass seeds, and drying the grass seeds; cleaning the grass seeds; under the normal temperature condition, soakingthe grass seeds in deionized water for 36-48h, performing thorough cleaning, and then performing surface sterilization; breeding the grass seeds; performing detoxifying culturing on the grass seeds by strains in a detoxifying culture medium, performing disinfection treatment in advance on a container loading the detoxifying culture medium to obtain tissue culture seedlings, performing heat treatment on the obtained tissue culture seedlings at 42 DEG C for 30-35d, and stripping stem tips of 0.2cm; performing propagation culture on the detoxified grass seed seedlings; performing tissue cultureon the detoxified grass seed seedlings; and after seedling exercising, performing transplanting to a substrate, and after the seedlings grow stably, performing transplanting to the fields. The nutrient value of pasturage can be greatly increased, the field management cost can be reduced, and the detoxifying effect of the detoxifying culture medium on the grass seeds can be increased.

The invention provides an escherichia coli for high expression of a foreign protein. A genotype of the escherichia coli lacks a prc gene and carries a mutated spr gene and a mutated ilvG gene; the mutated spr gene is as follows: the 174th position encoded by a spr gene is mutated to arginine or lysine by tryptophan; and the mutated ilvG gene is as follows: two bases of 'TA' are inserted at the 981bp position of the ilvG gene. The escherichia coli achieves a stable period of growth of a escherichia coli strain in the high-density fermentation process, and the degradation of the foreign proteinsecreted and expressed in a periplasmic space of the escherichia coli is inhibited, the high expression of the foreign protein is achieved, and the expression level is improved.

The invention discloses a method for preparing single-phase polycrystalline bismuth molybdate by using a solid-phase reaction method and application. The method comprises the following steps of: mixing bismuth powder and molybdenum trioxide according to a molar ratio of 1:5; ball-milling obtained mixture under inert gas atmosphere; and cleaning, tabletting, calcining and sintering to obtain the single-phase polycrystalline bismuth molybdate after ball-milling. The single-phase polycrystalline bismuth molybdate has a structural formula of Bi0.27Mo2O5 and shows semiconductor behavior at 160-300K. In the invention, the single-phase polycrystalline bismuth molybdate polycrystal is prepared by a method for combining mechanical ball-milling and solid-phase sintering; and the method has the advantages of simple preparation process, low cost, no environmental pollution, yield of over 90 percent and suitability for large-scale production.

The invention discloses a processing method of yuqing leaf black tea. The method comprises the following steps that aspergillus niger monospore bacterium suspension is inoculated onto a fermentation culture medium for culture, and then, filtrate is collected; gfresh leaves picked up in rainy seasons are put into the obtained filtrate for soaking treatment; then, deionized water is used for cleanly washing the filtrate on the fresh leaves for thin spreading treatment; after the thin spreading treatment is completed, green leaf rocking is performed for three times; after each time of green leaf rocking, rocked green leaves are immediately put into a 30-35 DEG C RH45-55 percent 13000-23000 Lux LED (light emitting diode) blue light illumination withering room for green leaf cooling; after the former twice green leaf rocking, the green leaf cooling time is 30 to 50 minutes, and the last green leaf cooling time is 20 to 30 minutes; the obtained tea leaves are sequentially subjected to rolling treatment, pile fermentation treatment, secondary rolling, rehydration and freeze drying treatment, and a finished product is obtained. The processing method is favorable for synthesis and expression of good aroma ingredients in the tea leaves. The obtained black tea has the advantages that the color and luster are black bloom; strips are heavy and solid; the tea water color is golden red, transparent and bright; the taste is sweet and pure; the leaf bottom is brilliant red.

The invention discloses a special slow-release vegetable fertilizer and a preparation method thereof, belongs to the technical field of fertilizers and aims to solve the technical problem of providing a special slow-release vegetable fertilizer which is long-lasting in fertilizer efficiency. According to the technical scheme for solving the technical problem, the special slow-release vegetable fertilizer consists of an inorganic core material and an organic coating material, wherein the inorganic core material comprises the following components in parts by weight: 20-25 parts of urea, 10-15 parts of monopotassium phosphate, 2-4 parts of magnesium phosphate, 2-4 parts of manganese sulfate, 2-4 parts of copper sulfate, 1-2 parts of ferrous sulfate and 1-2 parts of ammonium molybdate; the organic coating material comprises the following components in parts by weight: 20-25 parts of livestock excrement, 8-10 parts of plant straw, 8-10 parts of rotten apples, 8-10 parts of tea leaf dregs, 2-3 parts of radix stemonae, 1-2 parts of radix asparagi, 2-3 parts of pyrethrum, 3-5 parts of shrimp shell powder, 3-5 parts of fish bone meal, 2-4 parts of waste mushroom sticks, 3-5 parts of superfine coal ash, 3-5 parts of polyacrylamide and 0.05-0.2 part of yeast. The special slow-release vegetable fertilizer disclosed by the invention is long-lasting in fertilizer efficiency and high in yield and can be widely applied to the field of vegetable production.

The invention discloses a method for preparing a Bi-doped ZnS photocatalyst by taking ionic liquid as a template, belonging to the field of chemistry. The method comprises the steps of carrying out ultrasonic dissolution on ZnS, feeding the product into a Bi(NO3)3 water solution, dripping C8H15N2BF4 ionic liquid into the solution to form suspension, dispersing, drying, carrying out centrifugal separation, washing and drying to obtain the Bi-doped ZnS nanosphere photocatalyst. The method is simple in steps and environment-friendly in preparation technology; the product is good in performance.

The invention belongs to the technical field of seedling raising of psathyrostachy huashanica Keng, and discloses a seedling-raising compound substrate special for psathyrostachy huashanica Keng and apreparation method thereof. The seedling-raising compound substrate special for psathyrostachy huashanica Keng is prepared from garden soil, peat and perlite according to the volume ratio of 1:2:1. The germination rate of seeds of psathyrostachy huashanica Keng is highest and reaches 83.33%, the plant height is 12.5 cm, the root length is 5.8 cm, the quality of seedlings of psathyrostachy huashanica Keng is improved, the root-top ratio is 0.20, and the root system activity is increased by 16.64%. The seedling roots are developed, the metabolic capacity is obvious, the absorption of nutrientsand the synthesis of biomass are facilitated, the life activities are indirectly promoted, and the growth demands of psathyrostachy huashanica Keng are met.

The present invention relates to a lipid-soluble toothpaste. The lipid-soluble toothpaste is prepared from the following raw materials in mass percentages: 45%-60% of a humectant, 10-20% of a frictionagent, 2-3% of a detergent, 0.5-1.5% of an adhesive, 0.1-0.2% of a sweetener, 0.1-0.2% of a preservative, 0.5-1.5% of L-ascorbic acid palmitate, 0.3-0.7% of vitamin E, 5-10% of B vitamins, 2-5% of zinc gluconate and the balance water. The lipid-soluble toothpaste can remove oral inflammation, also cleans teeth, reduces gum bleeding, gum swelling and pains, repairs oral ulcers and stabilizes teeth.

The invention relates to health-care food, in particular to an enzyme beverage for male sexual function health care and a preparation method thereof. The enzyme beverage is prepared from the followingcomponents in parts by weight: 5-15 parts of maca; 1.8-2.5 parts of ginseng, 3.2-4.8 parts of cinnamon; 1.65-2.35 parts of fructus lycii, 16-20 parts of rhizoma dioscoreae, 14.5-22.8 parts of Chinesechives, 2.3-3.6 parts of pumpkin seeds, 3.7-4.9 parts of cashew nuts, 4.2-5.8 parts of apricot kernels, 3.3-4.6 parts of pine nuts, 19-30 parts of beef, 26-35 parts of eels and 65-110 parts of probiotic liquid. The maca contains maca amide and macaenol, pumpkin seeds are matched with maca so as to have a remarkable effect of balancing human hormone secretion for men, promote testicular hormone secretion, increase the quantity of sperms and improve the quality of the sperms; the ginseng, the cinnamon, the fructus lycii, the Chinese yam and the Chinese chives are mutually helpful for tonifyingkidney, warming yang, tonifying liver and invigorating stomach for men, have good effects of tonifying kidney, tonifying qi and warming yang and can obviously improve sexual capacity, and are lastingin effect and free of side effects.

The invention relates to an anti-ageing marine low-temperature SOD health-care product. The anti-ageing marine low-temperature SOD health-care product is made through mixing the following raw materials in parts by weight: 10-30 parts of marine low-temperature SOD, 1.5-2.0 parts of marine biological active polysaccharide, 1.5-5.0 parts of yam flour, 1.5-5.0 parts of American ginseng powder, 1.5-5.5parts of black chokeberry powder, 1.5-2.0 parts of radix angelicae sinensis powder, 1.5-2.0 parts of dried marine algae powder, 1.5-2.5 parts of nutritive amino acids, 1.5-2.5 parts of oligosaccharide, 0.2-0.8 part of a nutrient, 0.03-0.10 part of vitamins and 0.2-1.0 part of minerals. The health-care product disclosed by the invention can promote microcirculation, accelerate skin cell replacement, contribute to collagen synthesis, soothe cuticle skin, smooth wrinkles and facilitate improvement of anti-ageing capacity of human bodies.

The invention relates to sacubitril sodium salt shown in a formula (IV), a eutectic mixture of sacubitril free acid and acetic acid, a crystal form of the eutectic mixture, a preparation method of thecrystal form, and a method for preparing LCZ696 by using the eutectic mixture with the crystal form. The eutectic mixture provided by the invention can form the stable crystal form, and does not easily absorb moisture; the eutectic mixture is better in thermal stability, convenient for purification of sacubitril, convenient to store and beneficial to synthesis of LCZ696. Furthermore, the eutecticmixture provided by the invention can be directly used for preparing the LCZ696 without needing additional ion exchange, and helps to control the type and content of the counter cations.

The invention discloses a traditional Chinese medicine composite sinking puffed feed for juvenile acipenser schrencki and a preparation method of the traditional Chinese medicine composite sinking puffed feed. The invention provides a sinking puffed compound feed special for juvenile acipenser schrencki, which is processed and prepared through a processing technology of a sinking puffed feed, andin the respect of water stability, the sinking puffed compound feed can maintain stable in water for 2 hours without dissipation. According to the traditional Chinese medicine composite sinking puffedfeed disclosed by the invention, a manner of mixing a protein source with a fat source is adopted, so that nutrient requirements of fish bodies can be met, and the formula cost is also correspondingly reduced; in the formula of the traditional Chinese medicine composite sinking puffed feed, wall-breaking beer yeast powder is added, so that the utilization rate of nucleotide, oligosaccharide and the like in yeast can be effectively increased, and protein synthesis and immunity enhancing are facilitated; bile acid is added, so that fatty liver of the acipenser schrencki can be effectively prevented, and the liver function can be reinforced; and schizochytrium powder is rich in DHA unsaturated fatty acid, so that improvement of the meat quality and the flavor of fish meat can be facilitated.

The invention discloses an active peptide sinking puffed compound feed for juvenile acipenser schrenckii and a preparation method of the active peptide sinking puffed compound feed. The invention relates to a special sinking puffed compound feed for juvenile acipenser schrenckii processed and prepared by a sinking puffed feed processing technology, and in the respect of the water stability, the active peptide sinking puffed compound feed can be maintained in water for 2 hours without dissipation. A manner for combining a protein source with a fat source is adopted, so that nutrient requirements of fish bodies can be met, and the formula cost is also reduced correspondingly. According to the formula, wall-breaking beer yeast powder is added, so that the utilization rate of nucleotide, oligosaccharide and the like in yeast can be effectively increased, and protein synthesis and immunity improvement are facilitated. Bile acid is added, so that the fatty liver of sturgeons can be effectively prevented, and the liver function is increased. Schizochytrium sp. powder is rich in DHA unsaturated fatty acid, so that improvement of meat quality and flavor of fish meat is facilitated. Medicament is added, so that the medicament can be used as a phagostimulant of the juvenile acipenser schrenckii, besides, pathogenic bacteria and viruses can also be effectively killed, and the survival rateof the juvenile acipenser schrenckii is guaranteed.