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94 results about "Bio products" patented technology

Method for in-situ preparation of modified hydroxyapatite/polyvinyl alcohol nano-composite film

The invention relates to a method for in-situ preparation of a modified hydroxyapatite/polyvinyl alcohol nano-composite film. The method comprises the following steps: dropping a doped calcium nitrate solution to a polyvinyl alcohol water solution under a stirring condition, and then dropping a diammonium hydrogen phosphate solution and stirring at 40-70 DEG C for 12-24h, so that the in-situ generation of a doped modified hydroxyapatite/polyvinyl alcohol solution is achieved, wherein a calcium-phosphorus ratio is at 1.67; and then adding maleic anhydride and a catalyst, conducting stirring for 4-6h, so that a mixed solution is obtained, conducting electrostatic spinning, and drying an obtained film, so that the in-situ preparation of the modified hydroxyapatite/polyvinyl alcohol nano-composite film is achieved. The method disclosed by the invention is simple to operate; the interior of the film, which is prepared through in-situ cross-linking of the doped modified hydroxyapatite which is obtained from in-situ generation, has good dispersibility and stability, and meanwhile, the film has good biocompatibility; and the film, which can be used for separating and adsorbing a plurality of proteins, bio-enzymes as well as other bio-products, has a good adsorptive selectivity on the separation of the various proteins.
Owner:DONGHUA UNIV

Oxygen assisted organosolv process, system and method for delignification of lignocellulosic materials and lignin recovery

An oxygen assisted Organosolv process for a more efficient delignification and producing bio-products by decomposing lignocellulosic materials comprises providing a lignin solvent with water, an acid, an oxidant and one or more lignin dissolving chemicals. The process also includes placing biomass in contact with oxidant, acid, water, the lignin solvent in any order or combined to form a recyclable solvent, and recycling at least a portion of the recyclable solvent by circulating the recyclable solvent back into contact with the biomass. The circulating of the recyclable solvent occurs for a period of time, during which, acid and oxidant may be added if necessary as they may be consumed by the process, after which, the process then includes separating material such as chemicals and lignin from the recyclable solvent. The chemicals can be recycled as new lignin dissolving solvent or sold, while lignin can be used as natural and renewable colorant for polymers such as poly lactic acid, or mixed with other polymers as an additive and extruded or injected to consumable polymeric parts, or can be used and the natural source of renewable aromatics. Application of an oxidant will help the overall fractionation process by changing the chemical characteristics of the lignin and therefore allows more lignin to be removed from biomass. At the end, the lignin is separated from the lignin dissolving solvent by a separation process to also reclaim the lignin dissolving solvent for the next fractionation process.
Owner:AMERICAN SCI & TECH CORP

Method for preparing sapogenin through chenopodium quinoa willdL seed coat and separation and quantification method of sapogenin

The invention provides a method for preparing sapogenin through chenopodium quinoa willdL seed coat and a separation and quantification method of the sapogenin, and belongs to the technical field of biological product processing. The method for preparing the sapogenin through the chenopodium quinoa willdL seed coat comprises the following steps that firstly, the chenopodium quinoa willdL seed coat, complex enzyme and deionized water are mixed and enzymolyzed to obtain enzymatic hydrolysate; then the enzymatic hydrolysate and ethyl alcohol are mixed, chenopodium quinoa willdL saponin in the enzymatic hydrolysate is extracted through ultrasonic waves, solid-liquid separation is conducted, and a chenopodium quinoa willdL saponin extracting solution is obtained; then the chenopodium quinoa willdL saponin extracting solution and hydrochloric acid are mixed and subjected to acidolysis to obtain acidolysis liquid; and finally, the acidolysis liquid is extracted through petroleum ether to obtain extract liquor, and a solvent in the extract liquor is removed through evaporation, and the sapogenin is obtained. According to the method, the chenopodium quinoa willdL seed coat serves as a raw material to prepare the sapogenin, the natural sapogenin raw material can be provided for a professional pharmaceutical factory, the comprehensive utilization rate and the economic added value of chenopodium quinoa willdL can further be increased, and reuse and sustainable development of resources are facilitated. The invention further provides a method for simultaneous separation and quantification of oleanolic acid and hederagenin in the chenopodium quinoa willdL seed coat through UPLC-MS.
Owner:QINGHAI NORMAL UNIV

Plant waste bio-product pomace extract concentrates and processes of producing same

A processes is provide herein for converting waste bio-product pomace to useful bio-product extracts. The process includes the steps of forming a mixture of water as a solvent and a specified quantity of the waste bio-product pomace. Then optionally adding a suitable quantity of citric acid to the water / waste bio-product mixture. Then heating waste bio-product pomace / water mixture to an elevated temperature below the boiling point of water. Then optionally adding a suitable quantity of sodium metabisulfite to the heated waste bio-product pomace / water mixture Then stirring heated waste bio-product pomace / water mixture for a suitable time to disperse the waste bio-product uniformly in the water solvent. Then cooling the stirred, heated waste bio-product pomace / water mixture to a suitable lower temperature at a rate of about 60° C. per hour. Then removing solids from the stirred waste bio-product pomace / water mixture. Then clarifying the cooled stirred water / waste bio-product mixture. Then concentrating the clarifying cooled stirred waste bio-product pomace / water mixture under the influence of a suitable vacuum and at a suitable increased temperature until the concentrate has a BRIX of about 20 to about 22. This provides a concentrated useful bio-product comprising antioxidant-enriched liquids comprised of the natural elements extracted from said waste bio-products.
Owner:DALHOUSIE UNIV

Method for preparing carbon nano-tubes by using biological product as catalyst precursor

The invention relates to a method for preparing carbon nano-tubes by using a biological product as a catalyst precursor. The method comprises the following steps of: dewatering and drying the biological product, grinding the dried biological product for 10 to 40 minutes, putting the ground biological product into a chemical vapor deposition furnace, raising the temperature to 800 to 1,100 DEG C within 4 to 6 hours under the protection of argon, introducing the argon and natural gas into the chemical vapor deposition furnace in a volume ratio of 6-10:1, controlling the flow rates of the gases to be between 70 and 160 milliliters / minute, performing reaction for 30 to 60 minutes at the temperature of between 800 and 1,100 DEG C and cooling the reaction product to room temperature under the protection of the argon so as to obtain black powder; and reacting the black powder with acid solution of which the hydrogen ion concentration is between 2 and 6 mol / liter for 20 to 40 minutes and cleaning the reaction product with distilled water until the reaction product is neutral so as to obtain the carbon nano-tubes. The method can greatly reduce preparation cost, has high process safety and is an environmental-friendly, low-carbon and energy-saving production process; and the yield of and the purity of the prepared carbon nano-tubes are high.
Owner:SHANXI DATONG UNIV

Object identity tracing method, terminal device and server

The invention provides an object identity tracing method, a terminal device and a server, and relates to the technical field of bio-product identity tracing. The method involves an identifier information generation module used for generating target identifier information for a target object based on a registration request sent by the terminal device, and a management database used for executing target operation based on an operation request sent by scanning the target identifier information through the terminal device, wherein the target identifier information includes at least one of DNA sequence information of the target object, registration time and registration position GPS coordinates; and the operation request includes a tracing information recording request or a tracing informationquery request. Three types of objective information including the DNA sequence information of a bio-component, geographic information of a circulation node and time information are combined to serve as a tracing information identifier, so that the objectivity and universality of tracing information are ensured and the problem that a bio-component identity of the target object cannot be determinedin a tracing process in an existing tracing technology is effectively solved.
Owner:INST OF MEDICINAL PLANT DEV CHINESE ACADEMY OF MEDICAL SCI
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