41 results about "Coniferyl alcohol" patented technology

Particular aspects provide novel methods for redirecting carbon allocation in plants or cell culture from lignification to inherently more useful and tractable materials, and to facilitate the generation of, e.g., biofuels from the remaining plant roculture biomass. Particular aspects provided novel methods for converting monolignols into allyl/propenyl phenols, and for chavicol/eugenol formation or production. Additional aspects relate to the discovery of novel chavicol/eugenol synthases that convert p-coumaryl/coniferyl alcohol esters into chavicol/eugenol, and to novel compositions (e.g., novel proteins and nucleic acids encoding same), and novel methods using same for producing or forming chavicol/eugenol and other derivatives in cell culture and/or genetically modified plants, and for re-engineering the composition of plant biomass. Particular aspects provide novel methods for generation in culture or in planta of liquid/combustible allyl/propenyl phenols, and these phenolic products are utilized for (non-ethanol) biofuel/bioenergy purposes, while the remaining plant biomass facilitates the generation of other biofuels.

The invention relates to a fabricating method of a formaldehyde-free wheat straw medium density fiberboard, which comprises the following steps: wheat straw chemical-mechanical pulp is added with NaAc-HAc buffer to dilute pulp into wheat straw fiber suspension with mass concentration of 2-10%; coniferol-beta-D-glucoside that is 1-10% of oven dry wheat straw pulp, 0.05-0.5% of beta-glucosidase with concentration of 6.3u/mg, 1-12% of pectin colloid and 1-8% of cationic paraffin emulsion are respectively added in the suspension; and then, 10U/g-80U/g of laccase is added in the suspension to start reaction; the processed wheat straw fiber is scattered through an electric mixer; a fiberboard former is used to shape the fiberboard; excess water is removed by prepressing; and at last the fiberboard is obtained by hot pressing. By virtue of the fabricating method, the physical mechanical property and water-resistant performance of the wheat straw medium intensity fiberboard are improved; the pollution problem of free formaldehyde generated during the process of artificial board production and utilization is solved; waste materials such as crop wheat straw can be utilized; and the environment pollution is reduced.

The invention discloses a method for degrading lignin in seawater. The method comprises the following steps: at the temperature of 150-500 DEG C, after the lignin is mixed with the seawater for reaction for no less than 0.5 h, separating to obtain the mixed product of phenolic compounds, wherein the total weight of the mixed product of the phenolic compounds accounts for more than 20% of the weight of the lignin in feeding materials. The method has the advantages of wide source of raw materials, simplicity in separation, high product yield and the like, and is suitable for preparing the phenolic compounds such as coniferyl alcohol, tonquinol, vanillic aldehyde, syringyl derivatives and the like by using biomass resources as raw materials.

The invention discloses a method for synthesizing silibinin by virtue of an enzyme catalysis reaction, belonging to the field of biochemical industry. According to the method, four isomerides of the silibinin are synthesized by catalyzing coniferyl alcohol and taxifoliol by virtue of peroxidase in the presence of hydrogen peroxide. The reaction is carried out in a water phase, and the use of an organic solvent is avoided; and moreover, the reaction efficiency is high, 18.52mg/L of silibinin can be generated within 5 minutes, and the conversion rate is 85.31 percent. The method is a safe and high-efficiency method for synthesizing silibinin.

A process for preparing the Chinese-medicinal extract rich in coniferylester ferulate includes such steps as providing the powder of Chinese-medicinal material rich in coniferylester ferulate, supercritical CO2 extracting or organic solvent extracting, volatilizing the organic solvent to obtain refined oil, extracting by the mixture of organic solvents or organic solvent, and evaporating out the organic solvent. The application of said extract in preparing medicine, health-care product, or cosmetics for preventing and treating cardiovascular and cerebrovascular diseases is also disclosed.

The invention provides a spiraea salicifolia stem and branch anti-rheumatoid-arthritis effective part and a preparation method and application thereof.According to the effective part, spiraea salicifolia stems and branches serve as raw materials, extract is obtained after 60% ethyl alcohol reflux extraction and ethyl alcohol pressure reduction recovery, the extract is purified with macroporous adsorption resin, and the total lignanoside effective part is obtained.The sum of weights of (+)-8'-hydroxy pinoresinol-8'-O-beta-d-glucopyranoside, (7R,8S)-dihydro dehydrogenation bis-coniferyl alcohol-9'-O-beta-d-glucopyranoside, (+)-lyonia ovalifolia tree ring lignans-9-O-beta-d-glucopyranoside and (+)-isolariciresinol-9-O-beta-d-pyran xyloside in the effective part ranges from 40% to 50%.The effective part is determined through the method that a modern separation means and pharmacological activity screening are combined, the ingredients of obtained effective part are clear, the content of active ingredients is high, it is shown through the in-vitro and in-vivo experiment results that the spiraea salicifolia stem and branch anti-rheumatoid-arthritis effective part inhibits generation of pro-inflammatory cytokine tumor necrosis factor-alpha, interleukin-1 beta and interleukin-6 to achieve the effect of treating rheumatoid arthritis.

The invention discloses a high-temperature-resistance low-square-resistance conductive silver slurry and a preparation method for the same. The high-temperature-resistance low-square-resistance conductive silver slurry is made by the weight parts of the following ingredients: silver powder 45-55, yttria nanometer powder 1-2, thallium oxide nanometer powder 1.1-1.2, urea 1.5-2.7, methyl cellulose 0.5-0.9, fatty alcohol sodium sulfate 0.4-0.8, medical stone 2-4, pastern 3-5, alkyd 1-3, glycerinum 2.4-3.7, coniferyl alcohol 2.4-3.6, accessory ingredient 30-40 and water. The conductive silver slurry has excellent performance of resisting high temperature, can resist high temperature of being over 200 DEG, and uses the yttria nanometer powder and the thallium oxide nanometer powder to increase the conductivity and adherence of the conductive slurry and is very promising.

The invention belongs to the technical field of papermaking, and particularly relates to a multi-functional composite reinforcing agent for papermaking and a preparation method thereof. The preparation method comprises the steps of: preparing doped halloysite nanotubes from halloysite nanotubes and aluminum nitrate as raw materials, and then using gamma-aminoethyl aminopropyl trimethoxy silane for modification treatment to obtain a modified nano material; by taking hydroxymethyl acrylamide as a raw material, preparing gelatinous polyhydroxymethyl acrylamide through an inverse emulsion polymerization method; preparing starch into starch slurry, adding polyhydroxymethyl acrylamide, carrying out grafting reaction to obtain grafted starch slurry, and carrying out etherification modification by using 3-chloro-2-hydroxypropyl-trimethoxy ammonium chloride to obtain modified starch slurry; and finally, adding the modified nano material and coniferyl alcohol into the modified starch slurry, and stirring for reaction. By adding the reinforcing agent, the strength of paper can be obviously improved.

The invention discloses high-strength carbon paper which is prepared from the following raw materials in parts by weight: 7 to 9 parts of sodium carboxymethylcellulose, 5 to 8 parts of titanium dioxide, 12 to 15 parts of polyamine polyepoxide resin, 3 to 5 parts of polyethylene glycol, 3 to 4 parts of sodium benzoate, 4 to 6 parts of borax, 13 to 18 parts of aramid fiber, 6 to 8 parts of light calcium carbonate, 6 to 7 parts of styrene-butadiene latex, 3 to 5 parts of coniferyl alcohol, 7 to 8 parts of sodium bicarbonate, 7 to 11 parts of corn starch, 4 to 6 parts of fatty acid, 6 to 8 parts of benzotriazole and 12 to 16 parts of pigment. The high-strength carbon paper disclosed by the invention has the advantages of clearness in duplication, good duplication effect, high strength of duplication area and no decoloring.

The invention belongs to the biotechnology field, and particularly relates to a method for preparing dihydro-dehydro-di(coniferyl alcohol)glucoside (HMZG) through biotransformation. The dihydro-dehydro-di(coniferyl alcohol)glucoside (HMZG) is obtained from a strain with the preservation number of Bacillus subtilis ATCC 6633 through biotransformation, and three glucoside pure products (HMZG-1, HMZG-2 and HMZG-3) are obtained through repeated silicagel column chromatography purification. Therefore, the biotransformation method for efficiently obtaining the dihydro-dehydro-di(coniferyl alcohol)glucoside (HMZG) is established.

The invention discloses a microbial synthesis method of eugenol. The amino acid sequence and the nucleotide sequence of coniferyl alcohol acyltransferase CFAT are shown as SEQ ID No.1 and SEQ ID No.2respectively; and the nucleotide sequence of eugenol synthetases EGS2, APS1 and AIS1 are shown as SEQ ID No. 6, SEQ ID No. 9 and SEQ ID No. 11 respectively. The combination of coniferyl alcohol acyltransferase and eugenol synthetase EGS2, or the combination of coniferyl alcohol acyltransferase and eugenol synthetase APS1, or the combination of coniferyl alcohol acyltransferase and eugenol synthetase AIS1 can efficiently catalyze coniferyl alcohol to synthesize eugenol, reduce the accumulation of intermediates, and a foundation is laid for industrial production of microbial fermentation eugenol.

The invention discloses a synthesis method of a valerolactam alkaloid compound. The method comprises the steps that 1) thionyl chloride reacts with methanol, and then ferulic acid is added to synthesize ferulic acid methylester; 2) the ferulic acid methylester reacts under the function of diisobutylaluminum hydride to generate coniferyl alcohol; 3) 2-piperidone reacts with phosphorus pentachloride, and then a reaction product reacts with bromine under the function of potassium iodide to generate 3,3-dibromo-2-piperidone; 4) the 3,3-dibromo-2-piperidone reacts with hydrogen and sodium acetate under the function of palladium carbon to generate 3-bromo-2-piperidone; 5) the 3-bromo-2-piperidone prepared in the fourth step reacts with the coniferyl alcohol prepared in the second step under thefunction of sodium hydroxide to generate the valerolactam alkaloid compound. The synthesis method has the advantages that the sources of the raw materials are easy to obtain, the reaction conditions are mild, and the operation in the reaction process is simple.