1117results about How to "Promote hydrolysis" patented technology

The present invention is directed to conjugates such as polymeric prodrugs of aromatic, hydroxyl-containing compounds and methods of making and using the same. These polymeric prodrugs are preferably esters of hydroxyl-containing aromatic compounds and are formed by reacting a desired aromatic, hydroxyl-containing compound with a substantially non-antigenic polymer so as to produce a transport form having an ester linkage between the aromatic compound and the polymer. Preferred aromatic hydroxyl-containing compositions include 10- and 11-hydroxycamptothecin derivatives. Methods of treatment are also disclosed.

Tricyclic compounds, protected intermediates thereof, and methods for inhibition of HIV-integrase are disclosed.

Compositions and methods are provided for enhancing saccharification of biomass with one or more enzymes to enhance availability of substrates for fermentation by a microorganism. Microorganisms are also modified to enhance activity of one or more hydrolytic enzymes that are present endogenously in or are introduced heterologously into a host microorganism.

The invention relates to a hydrogen preparation method by hydrolyzing aluminum alloy, in particular to an aluminum alloy which can be hydrolyzed to make hydrogen and a preparation method thereof. The alloy consists of simple-substance metal aluminum, metal bismuth, metals with low melting point and water-soluble compound; according to weight percentage, the content of the metal bismuth is 8 to 50 percent, low melting point metal is 0 to 15 percent, water soluble compound is 1 to 40 percent and metal aluminum is 40 to 90 percent. The method of the invention reduces reaction temperature of aluminum hydrolysis, speeds up reaction rate of aluminum hydrolysis, enhances hydrogen yield rate, simplifies reaction devices as well as reduces hydrogen storage cost. The aluminum alloy prepared by the method of the invention is portable easily, is capable of preparing and providing hydrogen at any time and is applicable to providing humid hydrogen for fuel cells.

Topically-applied binder materials for imparting wet strength to soft, absorbent paper sheets, such as are useful as household paper towels and the like, include an epoxy-reactive polymer, such as a carboxyl-functional polymer, and an epoxy-functional polymer. These binder materials can be cured at ambient temperature over a period of days and do not impart objectionable odor to final product when wetted.

The invention discloses a method for preparing ethylene glycol and 1,2-propylene glycol. In the method, fiber is placed into water to react under the action of a catalyst at the temperature of 200-250 DEG C to obtain the ethylene glycol and the 1,2-propylene glycol. In the method, the fiber is hydrolyzed in hot water; on one hand, the WO3 catalyst, the load WO3 catalyst and the Ru / C catalyst are led into for providing acidity for promoting the acid hydrolysis of the fiber, on the other hand, the intermediate products in the hydrolysis can be inverted into low-carbon matters, and hydrogenationis carried out, so as to obtain the ethylene glycol and the 1,2-propylene glycol. The method has simple process, quick reaction, high efficiency and less energy and is easy for industrialization; no liquid acid is added, and no waste acid is discharged, therefore, the method is environmentally friendly. The method has low requirement on equipment, can not cause the corrosion of the equipment and has small investment; moreover, the inversion rate of the fiber is 100% high, the yield of the ethylene glycol can reach 35%, and the yield of the 1,2-propylene glycol can reach 31%; therefore, the method has significant application value.

This invention relates to sustained release compositions, and methods of forming and using said compositions, in particular for the sustained release of Follicle Stimulating Hormone (FSH). The sustained release compositions comprise a polymeric matrix of a biodegradable biocompatible polymer and stabilized FSH. The method of the invention for forming a sustained release composition includes, dissolving a biodegradable biocompatible polymer in a polymer solvent to form a polymer solution; adding biologically active stabilized FSH; removing the solvent; and solidifying the polymer to form a polymer matrix containing stabilized FSH dispersed therein. Also described is a method for providing a therapeutically effective amount of stabilized FSH in a patient in need of for a sustained period comprising administering to the patient a dose of the sustained release compositions of the invention. The sustained release composition of FSH can be used to promote maturation of follicles, promote spermatogenesis and to treat fertility disorders.

The invention provides an ionic liquid consisting of the anions of diimine (vikane) and (perfluoroalkglsulfonyl fluorosulfonyl group) imine and the cation of sulfonium salt, ammonium salt or phosphor salt, as well as method for preparing the ionic liquid through diimine (vikane) and (perfluoroalkglsulfonyl fluorosulfonyl group) imine alkali salt. The ionic liquid can be used as an electrolyte material and applied on the fields like secondary lithium ion batteries, super capacitors, etc.

The invention relates to roasted famous high-quality green tea and a production process thereof, belongs to the technical field of tea processing, and provides a production process of roasted famous high-quality green tea to effectively improve quality of the green tea. The production process includes steps of fresh tea leaf fixation, shaping and drying. Fresh tea leaves are further cured before fixation by placing the fresh tea leaves in a precision temperature control device at the set temperature of 35DEG C to 36 DEG C for 2-4 hours of curing.

The invention discloses a green tea processing method for reducing bitterness of autumn tea and summer tea, comprising the following steps:1) selecting tea leaves: selecting fresh tea leaves of autumn and summer and grading; 2) withering: spreading the fresh tea leaves for withering, wherein the water content of the withered leaves is 70-75%; 3) conducting fine manipulation: carrying out fine manipulation on the withered leaves to obtain fine-manipulated leaves, wherein fine manipulation comprises rotating and cooling which are alternately and repeatedly; 4) de-enzyming: de-enzyming the fine-manipulated leaves to obtain de-enzymed leaves; 5) dampening: dampening the de-enzymed leaves; 6) rolling: rolling the dampened leaves; 7) drying: using a gross fire to dry the rolled leaves until the water content is 10-20%, then using a complete fire to dry, wherein the water content of the dried leaves is 4-6%. According to the invention, by using the fresh tea leaves and optimizing the processing method, the produced green tea can reduce the bitterness of tea, thus fragrance of green tea with natural fragrance of flower is formed, and the taste quality is thick and mellow.

A pharmaceutically-active polymeric compound of the general formula (I), Y−[Yn−LINK B−X]m−LINK B  (I) wherein (i) X is a coupled biological coupling agent of the general formula (II) Bio−LINK A−Bio  (II) wherein Bio is a biologically active agent fragment or precursor thereof linked to LINK A through a hydrolysable covalent bond; and LINK A is a coupled central flexible linear first segment of <2000 theoretical molecular weight linked to each of said Bio fragments; (ii) Y is LINK B-OLIGO; wherein (a) LINK B is a coupled second segment linking one OLIGO to another OLIGO and an OLIGO to X or precursor thereof; and (b) OLIGO is a short length of polymer segment having a molecular weight of less than 5,000 and comprising less than 100 monomeric repeating units; (iii) m is 1-40; and (iv) n is selected from 2-50. The compounds are useful as biomaterials, particularly, providing antibacterial a.i. in vivo. Also provided are biological coupling agents useful as intermediates in the preparation of the pharmaceutically-active polymeric compounds.

The invention discloses a method for extracting rice protein by using rice, which comprises the following steps: soaking and grinding, rice milk adjustment, primary liquefying, centrifugal separation, homogenizing, washing, centrifuging, enzymolysis, enzyme inactivation, screen separation, washing, centrifuging, drying, crushing and packing so as to obtain the rice protein. The method overcomes the defects that the high-concentration alkali liquor has damage effect on rice protein amino acid in an alkali extraction process, the quality of the extracted rice protein is poor, and the purity and sanitary index of the extracted protein cannot reach the edible standard; and in other methods for extracting the rice protein by using enzyme preparations, the rice milk is liquefied at a temperature of over 95 DEG C and then is dried at the high temperature, so the rice protein is denatured, the color is darkened, and the function of the rice protein is damaged. The extracting method of the invention keeps good physical functionality of the rice protein, implements industrialization of the extraction and production of the rice protein, and meanwhile improves the production conversion rate and quality of rice starch sugar.

The invention discloses a method for treating landfill leachate, which orderly comprises flocculation precipitation pretreatment, hydrolysis pre-acidification treatment, anaerobic treatment, aerobic treatment comprising shortcut nitrification-denitrification and secondary nitrification-denitrification, membrane separation treatment and oxidation flocculation treatment. The method has the advantages of having higher removal rate of ammonia nitrogen and lower energy consumption, realizing the up-to-standard discharge of leachate concentrated solution, ensuring sound operation of the whole system, greatly lowering the oxidation-reduction potential in the anaerobic reaction, and improving the anaerobic treatment effect, thereby making the landfill leachate fully meet the first-level discharge standard of the Integrated Wastewater Discharge Standard.

The exhaust gas purification apparatus includes an additive injection valve for injecting an additive from an injection orifice thereof into an exhaust gas passage through which an exhaust gas flows, and a catalyst disposed downstream of the additive injection valve for promoting an exhaust purification reaction using the additive to purify the exhaust gas. The exhaust gas purification apparatus is configured to inject-supplies, from the additive injection valve, the additive to the exhaust gas by the additive injection valve at upstream of the catalyst, and supply the catalyst with the injected additive together with the exhaust gas utilizing an exhaust flow of the exhaust gas so that the exhaust purification reaction is performed on the catalyst. The additive injection valve is mounted such that the additive is injected from the injection orifice toward an exhaust upstream side with respect to a direction orthogonal to an exhaust gas flow direction.

This invention relates to a process for the production of a cultured savory base by hydrolyzing a protein-containing material using a combination of at least one enzyme with at least one thermotolerant lactic acid bacteria strain selected for its ability to provide a glutaminase activity. The invention also relates to an isolated strain of thermotolerant lactic acid bacteria strains selected for their ability to provide a glutaminase activity and their use for preparing a seasoning or flavor for culinary or petfood products.

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 present invention discloses a microwave producing method for nano-silver or gold; the reactants are added into the reactor according to the proportion of 1 to 1; the reactants are silver nitrate or auric chloride acid and starch or sodium carboxymethyl cellulose; the reactor is put into a microwave oven; with a mixer of a rotation speed of 100 / min and the microwave power of 0.3 Kw, the reaction time of the reactant starch is one hour while the time of the reactant sodium carboxymethyl cellulose is seven hours; the solution is dried by air or vacuum freeze or spraying after the reaction is over to produce nano-silver or gold powder or concentrated to nano-silver or gold colloid of the needed consistency through vacuum concentration. The present invention discards the ordinary reducing agent in thermochemical synthesis and takes the microwave heating to replace the traditional local heating method and realize homogeneous growing of nano-silver or gold; the grain size distribution of the nano-silver and gold is narrow and the grain shapes are regular; the method is widely used in biochemical and antiseptic material field.

The invention relates to one kind of preparation methods of the hydrophobic silicon dioxide using coating, rubber, resin, agricultural chemicals or paper and so on., the characteristic of this method includes the following steps: 1)Select raw materials: according to the principle that the weight of the silicon hydride resin acceptor is 2 -20% of the water affinity silicon dioxide to select the silicon hydride resin acceptor and the water affinity silicon dioxide; 2)Mixing the silicon hydride resin acceptor and the O / W emulsion sparse hydration medicinal preparation below 0 degree C to 40 degree C, making the O / W emulsion sparse hydration medicinal preparation whose surface absorbs hydrolyze substance of the silicon hydride resin acceptor; 3)Contacting the O / W emulsion sparse hydration medicinal preparation made by the second step, with the surface absorbing hydrolyze substance with the water affinity silicon dioxide, and carrying on heat treatment for the mixture of the water affinity silicon dioxide and the O / W emulsion sparse hydration medicinal preparation, the process's temperature is 100 degree C to 130 degree C, the process's time is 20 to 100 minutes, gain the hydrophobic silicon dioxide. The hydrophobic silicon dioxide made by this invention has the high hydrophobic characteristic.

The invention discloses a method of using waste bear yeast to simultaneously prepare zymosan, trehalose and yeast extract. The method comprises steps of debittering and impurities removing of the waste bear yeast, autolysis, enzymatic hydrolysis and inactivation of the waste bear yeast, separation and drying of the zymosan, membrane separation, concentration, crystallization and drying of the trehalose, concentration and drying of the yeast extract, etc. The method has the characteristics of high raw material utilization rate, good quality, low cost and easy industrialization, realizes that three products of the zymosan, the trehalose and the yeast extract are simultaneously produced from the same industrial waste, the waste bear yeast, improves the utilization rate of industrial wastes and achieves the target of maximal waste resource recovery.

The invention discloses a novel method for preparing wheat bran dietary fibers by taking wheat bran as a raw material. The wheat bran dietary fibers are dietary fibers enriched with araboxylan and the content is more than 16.08%. The novel method takes the wheat bran as the raw material and sequentially comprises the following process steps: pre-treating the raw material; rapidly extracting with an alkaline solution; carrying out ethanol precipitation; adding water to suspend again and blasting by steam; hydrolyzing compound protease; hydrolyzing compound amylase; carrying out secondary alcohol precipitation; and sieving. The dietary fiber product has high wheat bran dietary fiber yield and dietary fiber purity, and also has high content of araboxylan and high content of soluble dietary fibers; the product has good functional properties including water binding capacity, viscosity and the like, and has a plurality of physiological functions of relaxing bowel, controlling blood glucose, lowering blood fat, adjusting human immunity and preventing colon cancer and the like, so that high-quality raw material guarantees are provided for widely applying the wheat bran dietary fibers to foods.

Disclosed is a polylactic acid resin composition having excellent bleed resistance and molecular weight retention ratio. A polylactic acid resin molded body is also disclosed. The polylactic acid resin composition contains a polylactic acid resin (a), a metal hydrate (b) having an alkali metal-containing substance content of not more than 0.2% by mass, and a phosphazene derivative (c). The polylactic acid resin molded body is obtained by molding the polylactic acid resin composition. Specifically, a polylactic acid molded body can be produced by filling a melt of the polylactic acid resin composition into a mold at a temperature in the range from glass transition temperature of said polylactic acid resin (a) to 110° C. and molding the melt therein.

There is described a method for converting oripavine to hydromorphone or a physiologically acceptable salt thereof such as hydromorphone hydrochloride involving generation of 8,14-dihydrooripavine utilising diimine.

The invention relates to an organic oolong black tea leaf processing method, which belongs to the technical field of tea leaf processing. The organic oolong black tea leaf processing method specifically comprises a series of steps of: sunning and cooling green tea leaves, performing fine manipulation on the tea leaves, rocking the tea leaves, withering the tea leaves, rolling the tea leaves, fermenting the tea leaves, drying the tea leaves, storing the tea leaves in a refrigerator, selecting the tea leaves, baking the selected tea leaves, splicing and matching the baked tea leaves and judging the grades of the tea leaves by a tea judger. By layered continuous sunning and fine manipulation mechanical equipment, mechanical processing for sunning and fine manipulation is realized, the efficiency is improved, and the quality of the product is standardized; and a middle-temperature slow-drying automatic conveying technology is designed and developed, so that the fragrance of the tea leaves can be well formed in the final middle-temperature slow drying process, and the taste of the tea leaves is further alcoholized. The tea leaves processed by the method have lasting tender flavor and a fresh and mellow taste, and tea made of the tea leaves has a bright color.

The present invention provides a preparation method of an organosilicon sol-gel coating for magnesium alloy substrate surface corrosion resistance. According to the preparation method, alkoxy silane is adopted as a precursor, a salt compound of a metal cerium and / or a salt compound of a metal lanthanum is adopted as a catalyst, and a hydrolysis-condensation reaction is performed to obtain an organosilicon sol-gel coating. Experiment results confirm that: compared with conventional acid catalysts, the catalyst of the present invention provides high catalytic hydrolysis capability on alkoxy silane, and has a metal corrosion slowing effect, such that the organosilicon sol-gel coating prepared by using the catalyst can provide a good corrosion resistance effect for magnesium alloys compared with the organosilicon sol-gel coating prepared by using the conventional acid catalyisi.

The invention discloses a device and method for realizing high-efficiency and low-consumption nitrogen and phosphorous removal of municipal sewage and belongs to the field of biological treatment of sewage and sludge. Sewage in a raw water tank sequentially enters an anaerobic zone and an aerobic zone of a reactor for enhanced biological phosphorus removal and whole-process nitrification through awater feeding pump; anaerobic phosphorus release is performed in the anaerobic zone; whole-process nitrification and aerobic phosphorus absorption effects are carried out in the aerobic zone; subsequently, the sewage is drained into a settling pond, supernate enters a reactor for fermentation coupling, short-cut denitrification and synchronous anaerobic ammonium oxidation of excess sludge. The excess sludge is quantitatively fed into the reactor for fermentation coupling, short-cut denitrification and synchronous anaerobic ammonium oxidation of the excess sludge each day; short-cut denitrifying bacteria transform nitric nitrogen into nitrite nitrogen by using organic matters produced by hydrolysis and fermentation of the sludge; anaerobic ammonium oxidizing bacteria transform excess ammonia nitrogen and nitric nitrogen into nitrogen. According to the device and the method disclosed by the invention, deep nitrogen and phosphorus removal of the municipal sewage is realized by using an enhanced biological phosphorus removal process, a short-cut denitrification process and an anaerobic ammonium oxidation process; moreover, sludge reduction is realized by the hydrolysis and fermentation effects of the sludge, so that energy conservation and consumption reduction are realized.

The invention discloses a method for preprocessing lignocellulose, which comprises: installing the lignocellulose into a recycle reactor, injecting diluted acid, opening a circulating pump to carry out cyclic reaction under the temperature of 50DEG C-200DEG C, acid-removing and filtering hydrolyzate which is obtained after finishing the reaction, and using the hydrolyzate to ferment. The invention also discloses a system which is applied in the method. The method of the invention can effectively increase the conversion rate of hemicellulose and the conversion rate of cellulase hydrolysis in the lignocellulose, fermentation inhibiting products are reduced, simultaneously, the time for preprocessing also can be shortened, and the energy consumption is lowered.

The invention discloses a method for producing docosahexaenoic acid (DHA) through fermenting a straw hydrolyzate. The method comprises the following steps of (1) pretreating straw powder by using an ammonia gas blasting method, so as to obtain pretreated straw powder; (2) carrying out enzymolysis on the pretreated straw powder by using cellulase, beta-galactosidase and pectinase, so as to obtain the straw hydrolyzate; (3) adding a culture medium into the straw hydrolyzate, then, inoculating Aurantiochytrium to carry out fermentation culture, so as to obtain Aurantiochytrium fermentation liquor; (4) extracting the Aurantiochytrium fermentation liquor by using mixed liquid of ethanol and n-hexane, so as to obtain an extract, and drying the extract, thereby obtaining the DHA. According to the DHA prepared by the method, the yield is stable; in the case of not adding exogenous glucose, by adopting the method, the dry weight of obtained thalli can reach 58-66g / L, oil and fat account for 40.8-53.3% of the dry weight of cells, the DHA accounts for 42.1-45.3% of the dry weight of the oil and fat, and the DHA yield is 10.3-15.4g / L.

The invention relates generally to methods for the production of biofuels from organic matter, the methods comprising treating the organic matter with an aqueous solvent and at least one additional catalyst under conditions of heat and pressure. The invention also relates to biofuel products obtainable by the methods.