66 results about "Lignin breakdown" patented technology

The present invention provides novel and improved processes for treating a lignocellulosic biomass or technical lignin using ionic liquids to obtain lignin breakdown products and polysaccharide biomass components. Recycling of ionic liquids can be included in the methods of the invention.

The invention provides a method for locally producing an in-situ organic fertilizer in a crop straw field and an application. The method is achieved by the following steps of: crushing crop straws when crops are harvested; adding suitable amount of livestock excrement, urea or ammonium sulfate; inoculating suitable amount of cellulose decomposing bacteria, lignin decomposing bacteria and the like; agitating uniformly and filling water; keeping a field wet state for about 14 days in summer and about 12 days in autumn; and rapidly changing the crop straws into a high-quality organic fertilizer in farmland soil by biological catalytic conversion. Then grains and vegetables can be planted and environmental pollution is avoided; air pollution caused by combusting the crop straws is solved, the problem that organic matters of the farmland soil are reduced is solved, and the soil fertility is improved, so that the development of ecological agriculture is promoted; and the method is simple and feasible, saves the one-time huge investment of commercial production, saves energy and reduces emission, greatly reduces the labor intensity and solves the problems of long-distance transportation, secondary pollution and the like.

The invention discloses a processing technology of yellow storage feed, comprising the following steps of: using dry or dewatered yellowing straw as a raw material; after being mechanically kneaded and crashed, adding proper water and microbial concoction; after being baled, bagging and storing, wherein the microbial concoction added into a yellow storage process is used for decomposing large amounts of cellulose and hemicellulose, even lignin under an anaerobic environment and converting into glucide, the glucide is converted into lactic acid, acetic acid and monoprop through organic acid fermentation, inhibits the propagation of harmful bacteria of butyric bacteria, mycotic bacteria, and the like and finally achieves the same storage effect with silage.

A process for treating the sewage generated by making paper with straw pulp includes such steps as preimmersing by alkali method, adding activating agent prepared from anthraquinone derivative, sodium alkylphenylsulfonate and epoxy ethane, fast low-temp digestion, adding 5 kinds of flocculant sequentially for separation, flocculating, decoloring, decomposing lignin and depositing, anaerobic digestion, aerobic aerating, cleaning by biomembrane, and dewatering dregs to obtain fertilizer.

A flame retardant resin composition, containing a thermoplastic resin and a flame retardant, wherein the flame retardant contains a nitrogen-containing structure-introduced phosphorylated lignin derivative, wherein the nitrogen-containing structure-introduced phosphorylated lignin derivative is produced by introducing a nitrogen-containing structure into a lignin derivative and adding a phosphoric acid to the lignin derivative, or by adding a phosphoric acid to a lignin derivative and introducing a nitrogen-containing structure into the lignin derivative, or by introducing a nitrogen-containing structure into and adding a phosphoric acid to a lignin derivative simultaneously, and wherein the lignin derivative is obtained by subjecting a naturally occurring lignin to a treatment for allowing the naturally occurring lignin to be decomposed into small molecules or to be water-soluble.

The present invention is decay promoting ferment and its application in composting agricultural waste to promote the degradation of hemicellulose, cellulose and lignin. The decay promoting ferment is one compound fermented liquid compounded with the fermented liquid of starch decomposing bacteria, pectin decomposing bacteria, hemicellulose decomposing bacteria, cellulose decomposing bacteria and lignin decomposing bacteria, and through filtering off thallus and mixing. It is added into and mixed with the compost material, with the added amount being 0.8-1.5 wt% of the compost material. It can promote the degradation of starch and other easy-to-degrade matters as well as pectin, lignin and cellulose. It has fast fermentation temperature raising and simple use, and can promote composting efficiency and improve compost quality.

A process for preparing a series of phenolic substances includes such steps as dissolving the lignin powder recovered from waste pulp liquid in solvent, adding catalyst, high-temp and-pressure hydrogenating to obtain a series of compounds, and classifying.

The invention relates to a preparation method for a mica paper with high strength, insulation and high temperature resistance and belongs to the technical field of mica paper. The preparation method comprises the following steps: soaking a bamboo piece in acid liquor and alkali liquor in turn, thereby separating bamboo fibers from the bamboo piece; taking cells and interstitial fluid from bamboo fibers; utilizing high-pressure hydrolysis to decompose cellulose and xylogen in bamboo fibers into organic acid and furfural substances, wherein bamboo fibers have certain toughness and the toughnessand mechanical strength of bamboo fibers are further enhanced by introducing metallic oxides into the surface. According to the invention, the modified bamboo fibers are mixed with ethyl orthosilicate; when the paper sheet is soaked, deionized water is added and reacts with ethyl orthosilicate, so as to generate silicon dioxide; silicon dioxide is bonded with bamboo fibers and mica powder, so thatthe excellent mechanical properties, insulation and high temperature resistance of bamboo fibers and silicon dioxide are utilized to promote the toughness, insulation and high temperature stability of mica paper; the preparation method has a broad application prospect.

The invention relates to a seed production and cultivation technology for an edible fungus, which is characterized in: medium materials are composed of 80 parts of sawdust, 19 parts of thalli dry powder and 1 part of gypsum powder; when in use, the medium materials are added with twice of water; beneficial bacteria are cultured in a culture medium composed of 98 parts of bran, 1 part of the gypsum powder and 85 parts of water; the cultured beneficial bacteria are packaged, sterilized, cooled and inoculated with lignin decomposing enzyme in an aseptic condition to prepare the thalli; the thalli is dried and crushed into dry thalli powder. The technology for the edible fungus is suitable for the production and cultivation of wood decay fungi such as pasania fungus, needle mushroom, black fungus, white fungus, hericium erinaceus, oyster mushroom, pleurotus eryngii, king oyster mushroom, pholiota nameko, chicken leg mushroom, ganoderma lucidum, and the like; and the technology has the advantages of low investment and fast effect.

The present invention provides novel and improved processes for treating a lignocellulosic biomass or technical lignin using ionic liquids to obtain lignin breakdown products.

A process for the preparation of biologically active compounds, wherein active substances having additional functional groups and a modified spectrum of activity and modified application properties are obtainable from medicinal substances and plant protective agents as substrates which bear at least one amino or hydroxy functional group by using a one-electron reaction catalyzed by enzymes or compositions having enzymatic activity and a broad spectrum of substrates, characterized in that free-radical forming enzymes are employed as enzymes and/or supernatants of ligninolytic fungi in solution are employed as compositions having enzymatic activity, wherein the following can be introduced as additional functional groups: A) polyfunctional synthones which provide the active substance with an altered dissolving behavior in aqueous and lipophilic systems and a high interfacial activity; B) aromatic molecules, heteroaromatic compounds; C) heterocyclic compounds; D) active substances having an independent biological activity; E) active substances combining an independent activity and surfactant properties in one molecule; which yield coupling products being covalently linked with the starting materials and having an altered partition behavior which enable polyfunctional interactions with the target organism.

The invention relates to the technical field of saline-alkali soil improvement, in particular to a fertilizer for improving saline-alkali soil. The fertilizer comprises the following raw materials inparts by weight: 40-50 parts of manure, 28-37 parts of straw, 25-32 parts of gymnosiphon nana, 15-20 parts of urea, 13-18 parts of calcium superphosphate, 7-15 parts of potassium sulfate, 6-15 parts of corn flour, 2-5 parts of trace elements and 0.1-0.3 part of a microbial agent. Through the control of a fermentation condition and the addition of the microbial agent and the corn flour, microorganisms can sufficiently decompose crude organic matters, saccharides, protein cellulose and lignin in an organic fertilizer to ensure that the effective organic matter content is large, pathogenic bacteria and parasitic ovums are effectively killed, the soil fertility is improved by combining quick-acting nitrogen, phosphorus and potassium and trace elements, and the saline-alkali soil is effectivelyimproved.

The invention relates to a preparation method of a high-lignin straw decomposition agent, belonging to the technical field of straw decomposition agent preparation. The preparation method comprises the following steps: collecting the intestinal juice of worker termite, obtaining the intestinal bacterial colony of termite and culturing; inoculating a domestication medium with the intestinal bacterial colony of termite and the prepared straw decomposition bacterial liquid; screening out the qualified medium bacterial colony and further domesticizing to obtain a lignin straw medium mixed bacterial colony; and inoculating the mixed medium with the mixed bacterial colony and culturing to obtain the decomposition agent. In the invention, the prepared straw decomposition agent is not influenced by the strain formula and contains a large quantity of lignin decomposers, thus the decomposition effect is good, and the application is relatively stable; and moreover, the decomposition time can be greatly shortened, and the straw can be completely decomposed in 6-8 days.

The invention relates to the technical field of biological engineering, in particular to a peroxidase DyP35 gene, and expression protein and application thereof; the amino acid sequence of the peroxidase DyP35 is as shown in SEQ ID NO.2; the invention also discloses a gene for expressing the dye decoloring enzyme, and the DNA sequence is as shown in SEQ ID No.1; the invention also discloses a purification method of the dye decoloring enzyme and application of the dye decoloring enzyme to printing and dyeing dye removal, papermaking black liquid decolorization, lignin processing and fruit juice production phenol polymerization; and the peroxidase DyP35 has efficient decoloring activity on benzene ring dye and lignin decomposition products and has huge application prospect.

The invention provides a digester and a technology for quick softening and decomposition of bamboos, and relates to the technical field of production of natural bamboo fibers. The digester comprises amain steam pressure container; the lower end of the main steam pressure container is fixedly mounted on a channel steel base; electric heaters are mounted between the channel steel base and the mainsteam pressure container; a rotating platform is mounted in the center of the inner bottom surface of the main steam pressure container; a top sealing cover is mounted at the upper end of the main steam pressure container; a pressure gauge and a thermometer are arranged on the top sealing cover; a self-controlled thermometer is mounted on the side wall of the main steam pressure container; and a pressure reducer is arranged on the left side of the main steam pressure container. According to the digester and the technology, bamboo chips are contained in a cage and sent into the digester, and collagen sugar lignin is decomposed and softened quickly under the effect of certain pressure and high temperature; compared with a traditional method for soaking with a sodium hydroxide solution, the technology has the advantages that the efficiency of the technology is increased by 160 times, the production efficiency is substantially improved, the wastewater yield and the waste water treatment cost are reduced, and the technology is environment-friendly.

The invention provides a novel process of lignin degradation using a consortium of bacteria. To date, biodegradation of lignin has been centered to fungi only. Degradation of lignin by bacteria confer a new understanding that may be of tremendous industrial significance. This invention also discloses the isolation and acclimatization of ligninolytic bacteria from a specific site

The present invention provides a catalyst for degrading lignin and a catalyst for degrading an aromatic hydrocarbon, each of which contains a porphyrin. A solution containing an alkali compound is added to lignin, a catalyst for degrading lignin is allowed to act on the resulting lignin-alkali compound solution as needed, which is irradiated with light as needed, or a catalyst for degrading lignin is allowed to act on lignin as needed, which is irradiated with light, whereby alcohols and organic acids are separated. A degradation product generated when the alcohols and organic acids are separated is recovered, and also hydrogen ions are released. The present invention also provides a porphyrin having a catalytic function of converting lignin into alcohols and organic acids, a porphyrin having a catalytic function of degrading a compound containing an aromatic hydrocarbon in which an oxygen atom is bound to carbon which forms a benzene ring, and a porphyrin obtained by culturing Escherichia coli that cannot express a gene ypjD (b2611) due to mutation.

The present invention relates to a method for growing a plant, including bringing a lignin decomposition product having an aldehyde yield by alkaline nitrobenzene oxidation of 10% by mass or more into contact with the plant.

The invention discloses a humic acid composition. The composition comprises the following components in parts by weight: 24.3-36.5 parts of humic acid, 8.6-13.8 parts of hymatomalenic acid, and 1.2-3.2 parts of pyrotomalenic acid. A preparation method comprises the following steps: material preparation and processing are carried out for straw of oil crops, and liquid phase circulation and hydrolysis are carried out for the straw material in a mixed solution of potassium hydroxide and anthraquinone in order to obtain hydrolysate; multiple-effect evaporation and concentration of the hydrolysate are carried out till the solid concentration is 50-65%, and a concentrated solution is obtained; the concentrated solution is stirred, spray granulation is carried out, in order to obtain the humic acid composition. Circulation and hydrolysis of the straw of oil crops are carried out, lignin in the straw of oil crops is decomposed, and the humic acid composition with a high content of humic acid is obtained. The humic acid composition has reasonable combination of each component, and is good for improving crop yield.

The invention discloses a humic acid composition. The composition comprises the following components in parts by weight: 17.6-30.1 parts of humic acid, 0.6-2.3 parts of hymatomalenic acid, and 0.2-0.9 parts of pyrotomalenic acid. A preparation method comprises the following steps: material preparation and processing are carried out for straw of oil crops, and liquid phase circulation and hydrolysis are carried out for the straw material in a mixed solution of sodium sulfite, sodium carbonate and anthraquinone in order to obtain hydrolysate; multiple-effect evaporation and concentration of the hydrolysate are carried out till the solid concentration is 50-65%, and a concentrated solution is obtained; the concentrated solution is stirred, spray granulation is carried out, in order to obtain the humic acid composition. Circulation and hydrolysis of the straw of oil crops are carried out, lignin in the straw of oil crops is decomposed, and the humic acid composition with a high content of humic acid is obtained. The humic acid composition has reasonable combination of each component, and is good for improving crop yield.

The invention provides a production method of a bacterial spawn for efficient composting. The production method of the bacterial spawn for efficient composting comprises the following steps: efficientcomposting compound microbial agent compounding, raw material fermentation and bacterial spawn preparation. Fermentation raw materials comprise 35-45% of fungus chaff, 15-20% of coconut residues, 10-20% of cinnamomum camphora sawdust, 5-10% of bran, 5-15% of fly maggot manure, 10-15% of coffee grounds and 2-3% of lemon grass. The compost compound microbial agent is a compound microbial agent of protein decomposition bacteria, cellulose decomposition bacteria, lignin decomposition bacteria and compost special extraction bacteria. According to the bacterial spawn for efficient composting, nutritional ingredients of the organic solid waste are effectively utilized for enrichment culture of the microbial agent, the high-density bacterial spawn for composting is obtained, the ecological and environment-friendly effects are achieved, the production process of the bacterial spawn is effectively simplified, the composting efficiency and economic benefits are greatly improved, and good application prospects are achieved.

A biological technology for seeding and culturing edible fungus (domestomycetes) features that its medium material is prepared from saw dust, dried thallus powder, gypsum powder and water. Said dried thallus powder is prepared through preparing culture medium from rice bran, gypsum powder, calcium perphosphate, and water, loading in bag or bottle, high-pressure sterilizing, cooling, inoculating ligninolytic enzyme, culturing at 45 deg.c for 10-12 days to obtain thallus, baking and pulverizing. Its advantages are less investment and high successful rate.