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3344 results about "Chitin" patented technology

Chitin (C₈H₁₃O₅N)ₙ (/ˈkaɪtɪn/ KY-tin), a long-chain polymer of N-acetylglucosamine, is a derivative of glucose. It is a primary component of cell walls in fungi, the exoskeletons of arthropods, such as crustaceans and insects, the radulae of molluscs, cephalopod beaks, and the scales of fish and lissamphibians. The structure of chitin is comparable to another polysaccharide—cellulose, forming crystalline nanofibrils or whiskers. In terms of function, it may be compared to the protein keratin. Chitin has proved useful for several medicinal, industrial and biotechnological purposes.

Plant nutrient liquid fertilizer

InactiveCN102701861AImprove stress resistanceSolve the problem of lack of nutrientsFertilizer mixturesSucrosePhosphate
The invention relates to a plant nutrient liquid fertilizer. In order to solve the problem of over fertilization, the plant nutrient liquid fertilizer is prepared from the following raw materials in proportion by weight: aqua brassin 12-36, gibberellin 1-4, indoleacetic acid 30-80, abscisic acid 10-20, naphthaleneacetic acid 50-90, salicylic acid 80-180, vitamin C 1-3, cane sugar 40-100, chitin 20-80, 0.05-0.2 percent triacontanol 400-1,000, hydrolyzed protein 2-5, potassium dihydrogen phosphate 300-400, thiourea 40-120, cobalt chloride 5-12, borax 50-100, sodium silicate 30-55, urea 300-500, ammonium molybdate 50-80, copper sulfate 30-65, zinc sulfate 120-200, magnesium sulfate 100-150, calcium chloride 50-120, manganese sulfate 40-80 and water in the amount of 3-8 times the total amount of all the raw materials or water in the amount capable of dissolving all the raw materials, wherein the water is de-ionized water or micro cluster water; and the preparation method is that all the materials are prepared into aqueous solution. The plant nutrient liquid fertilizer has the advantages of favorably solving the problems of over fertilization and shortage of nutrient elements in soil, obviously improving the plant adverse resistance, improving the photosynthesis and the accumulation efficiency of nutritive materials and improving the yield and the quality.
Owner:魏玉芳

Methods of combined bioprocessing and related microorganisms, thermophilic and/or acidophilic enzymes, and nucleic acids encoding said enzymes

InactiveUS20110081683A1BacteriaBiofuelsGlucanAlicyclobacillus acidocaldarius
A genetically modified organism comprising: at least one nucleic acid sequence and/or at least one recombinant nucleic acid isolated from Alicyclobacillus acidocaldarius and encoding a polypeptide involved in at least partially degrading, cleaving, transporting, metabolizing, or removing polysaccharides, cellulose, lignocellulose, hemicellulose, lignin, starch, sugars, sugar oligomers, carbohydrates, complex carbohydrates, chitin, heteroxylans, glycosides, xylan-, glucan-, galactan, or mannan-decorating groups; and at least one nucleic acid sequence and/or at least one recombinant nucleic acid encoding a polypeptide involved in fermenting sugar molecules to a product. Additionally, enzymatic and/or proteinaceous extracts may be isolated from one or more genetically modified organisms. The extracts are utilized to convert biomass into a product. Further provided are methods of converting biomass into products comprising: placing the genetically modified organism and/or enzymatic extracts thereof in fluid contact with polysaccharides, cellulose, lignocellulose, hemicellulose, lignin, starch, sugars, sugar oligomers, carbohydrates, complex carbohydrates, chitin, heteroxylans, glycosides, and/or xylan-, glucan-, galactan, or mannan-decorating groups.
Owner:BATTELLE ENERGY ALLIANCE LLC

Biological pesticide mixed with plant insecticide sterilization component and amino-oligosaccharin and preparation method thereof

The invention relates to an ecological agricultural drug and a preparing method compounded by a content of Chinese traditional herb plant insecticide and amino group oligosaccharide. The ecological agricultural drug is refined by blending and processing the plant gradients containing one or a plurality of insecticide and disinfecting components and the Chitosante raw materials and solutions which are extracted with the amino group oligosaccharide. The weight percentages of all components are respectively: five to thirty percent of plant materials, seventy to ninety five percent of Chitosante material, and the solvents are alcohol and water. When in blending and configuring process, additives are added; wherein, the additives are one or a plurality of the agents, such as an antiseptic agent, a dispersing agent, a surface active agent, a penetrant or an emulsifying agent. The plant materials are materials such as Sophora flavescens, tobacco, Indian chinaberry fruit, pyrethrum, climbing groundsel or Aztec marigold, etc., the invention has the beneficial effects of multifunction of insecticide and disinfection, anti disease, disease prevention; easy degradation of the product, no residues and extensive raw material source. The working process of the invention simplifies the processes of extraction, condensation and filter with low producing cost.
Owner:DALIAN AODE ZHIBAO DRUG

Microbial agent for repairing petroleum-polluted saline alkali soil and preparation method thereof

The invention relates to a microbial agent for repairing petroleum-polluted saline alkali soil and a preparation method thereof, and belongs to the technical field of resource environment. According to a principle of microbial ecology, microbial community is extracted and screened from soils with high salt and alkali and high petroleum pollution to prepare the microbial agent, wherein obligate petroleum degrading bacteria can be sphingolipid bacteria, comamonas, chitin autophagy bacteria and bacillus. According to culture medium and soil environment experiments, the microbial agent can guarantee that the extracted microorganism can be survived in the soils with the salt content of 5,000mg / kg, and meanwhile, the degradation capability to the polluted soils with the petroleum content of 10-50g / kg can reach 80%. The microbial agent has the advantages of simple process, rich microorganisms, obvious dominant bacteria, good stability and capability of facilitating obligate petroleum degrading bacteria to adapt to a new pollution environment, increasing and improving the micro-ecological environment quality of the soils and avoiding secondary pollution to the environment, and can obviously improve the degradation efficiency of petroleum hydrocarbon in the saline alkali soil.
Owner:TIANJIN UNIVERSITY OF TECHNOLOGY

Application of injectable hydrogel in preparing intraocular filling materials

The invention discloses an application of injectable hydrogel in preparing intraocular filling materials. The application is characterized by being application of the injectable hydrogel as intraocular filling materials in vitreoretinal surgery as well as application of the injectable hydrogel as an intraocular drug carrier, wherein the injectable hydrogel is composed of two agents; the first agent is a glue solution containing oxidized polysaccharide; the second agent is a glue solution containing a chitin derivative and /or collagen; the two agents are separately contained in two injection tubes of a duplicate injector; the two glue solutions are simultaneously pushed and injected by the duplicate injector; in the pushing and injecting process, mixing and cross-linking are generated, namely, a dialdehyde group of the oxidized polysaccharide generates cross-linking reaction with amino of the chitin derivative and/or the collagen to form hydrogel with viscoelasticity. The constituents of the hydrogel are biomacromolecules different from chemical macromolecules, and a micromolecule cross-linking agent is not introduced, so that the biocompatibility is good, the hydrogel can be degraded and absorbed, toxic and side effects are avoided, and the safety is good.
Owner:QINGDAO HUISHENG HUIZHONG BIOLOGICAL TECH CO LTD

Method for extracting chitin and antibacterial peptide from fly larvae

The invention belongs to the field of product extraction technology and relates to a method for extracting chitin and antibacterial peptide from fly larvae. The method comprises the following steps of: firstly disinfecting and rinsing fresh fly larvae to be clean, then extruding the cleaned fly larvae to separate the fly larvae skin from visceral mass serous fluid; firstly soaking with hydrochloric acid solution, drying after washing, and then soaking with NaOH solution to remove protein; retaining residual liquid, drying after cleaning, adding the NaOH solution after crushing, carrying out water bath at the temperature of 98 DEG C, and heating for reaction; putting chitosan into acetic acid solution, stopping reaction after the chitosan is dissolved, filtering, cleaning, drying at the temperature of 50 DEG C, and obtaining the chitosan; and then adding acetic acid into the visceral mass serous fluid of the fly larvae, homogenizing, standing over the night at the temperature of 4 DEG C, filtering, adsorbing the filtrate with alginic acid, filtering, then eluting the antibacterial peptide adsorbed on the alginic acid with the hydrochloric acid solution, adjusting the pH value of the eluent to be 3.5, carrying out precipitation with NaCl, carrying out dialysis and desalting, drying and obtaining a crude antibacterial peptide product. The method has the advantages of reasonable technical route, low cost, high yield, large economic value, environmentally-friendly effect and effective utilization of the fly larvae resources for preparing natural product varieties.
Owner:QINGDAO ZHONGREN PHARMA
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