578 results about "Gallic acid" patented technology

The invention discloses a GNFs / CNTs synergetic enhanced Al / Si / Al2O3 composite. The aluminum-based composite sample is mainly prepared from one or more of Al, SiO2, CNTs and GNFs. The CNTs and the GNFs are subjected to surface modification through gallic acid and rutin, and through combination with an in-situ reaction and a powder metallurgy technology, a CNTs independently enhanced aluminum-based composite, a GNFs independently enhanced aluminum-based composite and the CNTs and GNFs mixing enhanced aluminum-based composite with an Al / Si alloy as a matrix are prepared. The results show that 1, among the three composites, the 1% CNTs enhanced composite has the most excellent mechanical properties as well as the highest compactness, hardness and tensile strength; and 2, strengthening mechanisms of the CNTs enhanced aluminum-based composite mainly include the thermal expansion coefficient mismatch enhancement, Orowan enhancement and load transfer enhancement. The invention further discloses a preparation method of the aluminum-based composite. According to the method, the process is simple, production is easy, and broad application prospects are achieved.

The invention discloses a total-bio-based flame-retardant epoxy resin. According to the invention, reactive groups on gallic acid are used for introducing 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) and epoxy groups so as to obtain a bio-based epoxy monomer which is used for replacing bisphenol A epoxy resin DGEBA used in general industries; and a bio-based curing agent, i.e., difurfurylamine, with higher activity is synthesized and subjected to mixing and curing with the prepared epoxy monomer so as to prepare a total-bio-based epoxy resin product with flame retardant properties. The epoxy resin is rich in biological sources, friendly to environment, simple in reaction process and good in flame retardancy, and has a highest limit oxygen index of 34% and a highest vertical burning level of V-0. The invention also discloses a preparation method for the total-bio-based flame-retardant epoxy resin.

The invention relates to the technical field of vegetable-oil soft capsules, in particular to a peony-seed-oil soft capsule and a preparation method thereof. The peony-seed-oil soft capsule is prepared by mixing and gelling of raw materials, capsule pressing and forming, hardening, sizing, scrubbing and drying. The peony-seed-oil soft capsule comprises the following raw materials in parts by weight: 80-95 parts of peony seed oil, 1-3 parts of fucosterol, 1-3 parts of squalene, 1-3 parts of propyl gallate, 0.05-0.25 part of tocopherol, 0.05-0.25 part of soya bean lecithin, 0.15-0.25 part of vitamin C, 5-10 parts of gelatin, 5-10 parts of water, 1.3-2.5 parts of sorbierite, and 2.5-5 parts of glycerol. The peony-seed-oil soft capsule is nutritious and safe, has the obvious effects of reducing blood fat, blood pressure and cholesterol, and can enhance the self immunity, prevent the diabetes, prevent and treat cancers, reduce weight, prevent cerebral stroke and myocardial infarction, clear harmful substances in blood, prevent and treat heart diseases and relieve the climacteric syndrome.

The invention provides a preparation method of graphene. The preparation method includes the steps of firstly, preparing graphene oxide; secondly, using a silane coupling agent to modify the graphene oxide; thirdly, adding an initiator in the presence of the modified graphene oxide obtained in the second step, and copolymerizing N-vinyl pyrrolidone and polyethylene glycol monoallyl ether to obtain silane coupling agent modified graphene oxide dispersing liquid using copolymer as the dispersing agent; fourthly, adding gallic acid and tannic acid into the modified graphene oxide dispersing liquid obtained in the third step to perform reduction reaction so as to obtain the end-product graphene. The prepared graphene is promising in bio-application prospect and capable of forming stable and high-concentration dispersing liquid.

The present invention relates to a chemical cleaning composition for cleaning a resist release agent, specifically, the present invention comprises: a) 0.05 parts by weight to 10 parts by weight of organic amine compounds; b) 0.05 parts by weight to 30 parts by weight An organic solvent in parts by weight; c) 0.005 parts by weight to 5 parts by weight of triazole preservatives; d) 0.005 parts by weight to 5 parts by weight of preservatives selected from hydroxyphenols, alkyl gallates and reducing agents ; e) balance water. The chemical cleaning composition for cleaning the resist stripping agent of the present invention has excellent cleaning ability and can prevent the corrosion of the metal film layer, and can replace methanol, ethanol, isopropanol, etc. used in the cleaning process in the past Pyrophoric substances, namely alcohol compounds, can effectively clean organic foreign matter such as release agent and inorganic foreign matter such as dust remaining on the substrate.

The invention discloses tetrandrine gallate and a drug composition, a preparation method and applications thereof. The structure of tetrandrine is modified, and a novel derivative of the tetrandrine is prepared, namely, the tetrandrine gallate. Physical and chemical constant tests show that the solubility of the tetrandrine gallate is increased by 43 times than the tetrandrine. A pharmacology experiment shows that the tetrandrine gallate has an obvious inhibiting effect on the proliferation of tumor strain cells, and the effect is superior than that of the tetrandrine; and the tetrandrine gallate shows obvious blood pressure lowering, anti-inflammatory and pain easing effects which are higher than those of the tetrandrine, and the toxicity is smaller than that of the tetrandrine. Accordingly, the tetrandrine gallate is active ingredients and can be used for preparing anti-tumor, blood pressure lowering, anti-inflammatory and pain easing drugs, and the application range is wide.

Phosphor from the class of the thiometallates, preferably of the thiogallates, the thiometallate being made up so as to correspond to the formula (AS).w(B2S3), where A is at least one divalent cation selected from the group consisting of Mg, Ca, Sr, and where B is at least one trivalent cation selected from the group consisting of Al, Ga, Y, where the factor w may lie either in the range 0.8>w>0.98 or in the range 1.02>w>1.2.

The invention discloses a method for detecting vitamin A, D and E content in infant food and dairy products, comprising the following steps: accurately weighing a sample, adding a pyrogallic acid ethanol solution, adding a KOH aqueous solution for complete saponification, then rapidly cooling, and then placing the sample in a brown separating funnel, and irrigating an iodine flask by using an ethereal solution having a volume ratio of petroleum ether to ether being 2:1, putting the washing liquor in the brown separating funnel, shaking and standing until completely layering, carrying out extraction on the water layer by using another brown separating funnel filled with the ethereal solution, and combining the organic layers; washing the organic layers by using deionized water repeatedly until the organic layers are not alkaline, dewatering and filtering the organic layers, drying under nitrogen until nearly dried and then dissolving with methanol, blowing with a pressure blowing concentrator to 1 ml, bringing to volume by methanol, filtering through a filter membrane, and separating through a chromatographic column; separating by using 10% acetonitrile:methanol mobile phase with a flow rate of 0.3 mL / min; using three wavelengths of 296 nm, 264 nm, and 325 nm to simultaneously detect vitamin A, D and E, wherein, the detection concentrations respectively are 1.0-100.0 mu g / L, 1.0-100.0 mu g / L, and 0.50-50.0 mu g / L.

The invention discloses a lipidosome encapsulating epigallocatechin gallate and a preparation method process. The lipidosome consists of the following components: soya bean lecithin, cholesterol, epigallocatechin gallate, buffer liquor and tween-80. The preparation method disclosed by the invention is simple in process and the EGCG lipidosome is prepared by a reverse evaporation method, and ultrasonic treatment is carried out on the lipidosome by a water bath ultrasonic instrument till the system is stable. The method can remarkably improve the stability of the EGCG lipidosome, and the grain size of the lipidosome can be effectively controlled and the encapsulation efficiency can be effectively improved by adjusting the ratio of the lipid components and the buffer liquor through the technical steps such as magnetic stirring, ultrasonic treatment and rotary evaporation. The EGCG lipidosome disclosed by the invention develops the application range of lipidosome, and the lipidosome is used as a carrier to encapsulate EGCG, so that the lipidosome is simple in preparation process, lower in demand on equipment, convenient to popularize and apply and can be industrially produced.

The invention discloses a Bacillus amyloliquefaciens strain and application thereof. The strain is Bacillus amyloliquefaciens ZTS-06, and the collection number is CGMCC No.11165. The invention also discloses a live strain preparation containing the strain and a preparation method thereof. The live strain preparation is prepared by the following steps: carrying out amplification culture on the Bacillus amyloliquefaciens ZTS-06, inoculating in a fermentation culture medium, culturing to obtain a fermentation liquid, adding propyl gallate, beta-cyclodextrin and soluble starch, and carrying out spray drying to obtain live strain raw powder; and adding abundant soluble starch, and uniformly mixing to obtain the live strain preparation. The strain has favorable degradation effects on phenylallyl propionic acid, para-hydroxybenzoic acid, cinnamic acid and the like, and can relieve succession cropping obstacles caused by phenolic acid and other toxic substances. The living strain preparation has the advantages of short fermentation period, high fermentation liquid bacterium concentration, low live strain loss in the spray drying process, and high stability in the storage process.

The disclosure provides compositions treating traumatic brain injuries such as concussions. In one embodiment, the composition comprises phosphatidylserine, phosphatidylcholine, quercetin, astaxanthin, R-alpha lipoic acid, N-acetyl cysteine, taurine, L-glutamine, carnitine, D-ribose, creatine, epigallocatechin gallate, melatonin, ginkgo leaf extract, curcumin and L-glycine. The disclosure also provides methods for treating traumatic brain injuries such as concussions by administering an effective amount of the compositions described within.

The invention provides a technique for making a rattan plaited handicraft antique. The technique for making the rattan plaited handicraft antique comprises the following steps that the woven rattan plaited handicraft is soaked in salicylic acid and exposed in the sun for four hours, then the rattan plaited handicraft is soaked in gallic acid and then frozen for eight hours, ultraviolet light with the wavelength being 0.1-0.2 micrometer is used for irradiating the rattan plaited handicraft, the rattan plaited handicraft is covered with pond sludge and maintained at the temperature of 32-40 DEG C, then the rattan plaited handicraft is soaked in a modified aging solution for two hours, and the rattan plaited handicraft is aired and completely cleaned; the rattan plaited handicraft is soaked in biogas slurry generated by anaerobic fermentation for 24 hours, completely cleaned and dried, then the rattan plaited handicraft is fumigated for one hour under the steam condition, and afterwards, the rattan plaited handicraft is placed in an incubator for heat preservation; and the rattan plaited handicraft is placed in a drying machine to be dried, and the moisture content of the rattan plaited handicraft is made not higher than 1%. By the adoption of the treatment technique, the color and luster of the rattan plaited handicraft can be made dark, and the number of oxidation spots on the surface of the rattan plaited handicraft is increased; and meanwhile, the anti-corrosion performance and anti-mold performance of the rattan plaited handicraft can be improved, curing of wood fibers of rattan is accelerated, and the strength of the rattan plaited handicraft is improved.

The invention discloses a carbon nano tube enhanced copper-based composite material. The carbon nano tube enhanced copper-based composite material comprises the following components of, by weight, 1% to 9% of surface-modified carbon nano tubes, 2% to 5% of powdered graphite, 6% to 15% of Ti3SiC2 powder and the balance copper powder, wherein the surface-modified carbon nano tubes are modified through a gallic acid aqueous solution. In the copper-based composite material, the surface-modified carbon nano tubes are good in dispersity and low in impurity content, the complete length-diameter ratio is maintained, the surface-modified carbon nano tubes, the powdered graphite, the Ti3SiC2 powder and the copper powder exert the enhancement function jointly, electric frictional wear performance of the copper-based composite material is remarkably improved, and meanwhile strength and impact resistance are excellent. The invention further discloses a preparation method of the carbon nano tube enhanced copper-based composite material. The method is simple in technology, capable of making production easy and wide in application prospects.

The invention relates to the daily chemical field and the medicinal industry, and concretely relates to a chitosan quaternary amine salt gallate, a synthetic method thereof and an application thereof. A chitosan trimethyl quaternary amine salt is reacted with acylated gallic acid to obtain the chitosan quaternary amine salt gallate which has a structure represented by formula (1). The chitosan quaternary amine salt gallate obtained in the invention, which can be dissolved in water, has a synergic effect and allows the chitosan application to be enlarged, can be widely applied to the daily chemical field of medicines and the like.

The invention discloses a method for identifying the quality of Biluochun tea, which comprises the following steps of: after soaking the Biluochun tea, scanning the soaked solution by using an ultraviolet and visible spectrophotometer; and, after leaching and extracting another Biluochun tea, measuring the contents of epigallocatechin, epigallocatechin epicatechol gallate, epicatechin and epicatechin epicatechol gallate in the tea from the leached and extracted solution by adopting a high efficiency liquid chromatography. According to the method disclosed by the invention, a technology for identifying the quality of the Biluochun tea is established by adopting (a technology that spectrum and chromatograph are combined) spectrum and chromatograph analysis; the comprehensive evaluation data of green tea quality is provided; the method has the characteristics of being accurate, reliable, simple, convenient and efficient; and the method can be popularized and applied in the field of the green tea quality counterfeit identifying technology.

The invention relates to a method for evaluating the comprehensive quality of medicinal material Polygonum capitatum of Relinqing granules, which comprises the following steps: providing Polygonum capitatum medicinal materials from different producing areas; measuring the contents (wt%) of the following parameters of Polygonum capitatum: Quercetin, Quercitrin, gallic acid, extract and general flavone; processing the content of each parameter by software SPSS (Statistic Package for Social Science)17.0; determining the characteristic root and the variance contribution (%) of each main ingredient, and determining a first main ingredient; when the accumulated variance contribution (%) is more than or equal to 75%, determining the F values of all Polygonum capitatum medicinal materials from different producing areas; and determining the comprehensive quality of the Polygonum capitatum medicinal materials from different producing areas according to the size sequence of the F values. The method disclosed by the invention is simple, easy and reliable.

The invention relates to gargle with the drinking safety, comprising the following components by weight percent: 0.1-0.5 percent of tea polyphenols, 0.05-0.3 percent of magnolol, 0.05-0.3 percent of paeonol, 0.01-0.1 percent of phytic acid dodecasodium salt, 0.5-3 percent of glycyrrhizic acid, 1-5 percent of ethanol, 0.05-0.5 percent of mentha haplocalyx, 0.001-0.01 percent of essence, 0.05-0.2 percent of propylgallate, 0.01-0.1 percent of sodium cyclamate, 0.05-0.5 percent of macromolecule suspending agent, 0.3-2 percent of surface active agent and the balance of water. A preparation method of the gargle comprises the following steps of: adding tea polyphenols, magnolol, paeonol, propylgallate, mentha haplocalyx and essence into the ethanol according to the content and components, stirring for dissolving to obtain solution A; adding the phytic acid dodecasodium salt, glycyrrhizic acid, sodium cyclamate, macromolecule suspending agent and surface active agent into water, stirring for dissolving to obtain solution B; slowly adding the solution A into the solution B while stirring, and evenly stirring the mixture solution to obtain the gargle. The gargle has clear appearance, is slightly sweet in the mouth feel and ensures fresh breath after use.

The invention discloses a compound antioxidant for animal feeds. The compound antioxidant is prepared from the following components in parts by weight: 10-40 parts of tea polyphenol, 5-15 parts of lactein, 5-20 parts of ethyoxyl quinolone, 1-5 parts of butylated hydroxyanisole, 1-5 parts of propylgallate, 5-20 parts of a synergist, 10-20 parts of an emulgator and 15-40 parts of a carrier. In addition, the invention further discloses a preparation method of the compound antioxidant for the animal feeds. The preparation method comprises the following steps of molecular fusion, homogenization and emulsification, spray drying and the like. The compound antioxidant for the animal feeds, disclosed by the invention, ensures the mixing uniformity of the components, and the oxidation resistance is outstanding.

The invention discloses a method for stably dispersing graphene or / and carbon nanotubes in organic solvent. The method includes steps of dispersing graphene or / and carbon nanotubes and bio-based gallic acid epoxy resin into the organic solvent under action of ultrasonic to obtain uniform and stable graphene or / and carbon nanotube dispersing liquid. The method is simple, requires simple equipment, and is low in production cost. The graphene or / and carbon nanotube dispersing liquid prepared by the method is high in stability and good in dispersibility, and accordingly provides necessary technical preparation for producing high-performance graphene or / and carbon nanotube composite materials. During parathion of the graphene or / and carbon nanotube composite material, the bio-based gallic acid epoxy resin can not only serve as a dispersing agent but serve as an interference compatilizer for improving interference interaction of the graphene or / and carbon nanotubes and the epoxy resin matrix.

The invention discloses a near-infrared light response nanoparticle which comprises a nano-carrier, a nano-carrier entrapped substance, a photosensitizer and a near-infrared light response phase change material for packaging, wherein the nano-carrier entrapped substance comprises an H2S donor and an anticancer drug. Hydrophobic DATS, hydrophilic indocyanine green and epigallocatechin gallate are encapsulated into mesoporous polydopamine nanoparticles by utilizing the amphiphilic property of myristyl alcohol, and finally, the MPDA-ICG / DATS / EGCG@TD nanoparticles are obtained. After the nano system is irradiated by near-infrared laser, ICG in the nano system can effectively convert NIR into heat; and the phase change material TD responds to temperature rise and is changed into liquid from solid, so that rapid release of DATS and EGCG is promoted.

The invention belongs to the fields of medicine and gene engineering, relates to a new medicinal application of epigallocatechin-3-gallate EGCG, and particularly relates to an application of epigallocatechin-3-gallate in the preparation of antitumor drugs. Cell experiments demonstrate that the epigallocatechin-3-gallate is a CYPJ inhibitor, and has the capability of inhibiting liver cancer cell growth; a large dose of EGCG basically has no toxicity to liver, kidney and heart. Experiment results also show that when EGCG is added into a culture solution of tumor cells, the proliferation of tumor cells is inhibited; the tumor cells are blocked at the G1 stage; the activity of CYPJ is inhibited; the activation of an Erk signal path by CYPJ protein is blocked. The epigallocatechin-3-gallate of the invention can be used for the preparation of antitumor drugs, especially anti-liver cancer drugs; and the drugs are designed aiming at cell target points, and drug resistance is not easy to generate.

The invention discloses a method for rapidly detecting the content of a synthetic phenol antioxidant, particularly the content of BHA (Butyl Hydroxy Anisol), TBHQ (Tert-Butyl Hydroquinone) and PG (Propyl Gallate), in edible oil and fat and oil and fat food. The method comprises the following steps of: by using an organic solvent as an extracting agent, uniformly mixing the extracting agent and a sample to be detected; carrying out oscillating extraction; taking extraction liquid; adding 3-methyl-2-benzothiazolinonehydrazone hydrochloride and ammonium ceric sulfate which are used as color development reagents into the extraction liquid; shaking the mixture well; standing; and rapidly detecting the content of the synthetic phenol antioxidant by a spectrophotometry. In the method, large-scale expensive equipment such as an HPLC (High Performance Liquid Chromatography), a GC (Gas Chromatograph) and the like are not required. An instrument required by the method is simple. The method is simple and convenient to operate, can be completed by non professional staffs, has low cost, high accuracy and reproducibility, is time-saving and labor-saving and has wide market application prospect.

The invention relates to an O-type foot-and-mouth disease virus antibody chemiluminescence detection kit. The kit includes an polystyrene board coated by antigen, a monoclonal antibody, a standard substance, a luminescence substrate solution A and a luminescence substrate solution B. The polystyrene board coated by antigen is an opaque polystyrene plate coated by an O-type foot-and-mouth disease virus RE2 recombinant protein; the monoclonal antibody is a horseradish peroxidase labeled O-type foot-and-mouth virus monoclonal antibody; the luminescence substrate solution A comprises a Lumino, hydroxycoumarin, gallic acid, a Tris-Hcl buffer and water; the standard substance is foot-and-mouth virus O-type antibody respectively diluted buy a calibration diluent, wherein the dilution is 0NU / mL, 2NU / mL, 5NU / mL, 10NU / mL, 30NU / mL and 60NU / mL respectively. The kit of the invention can be used for detecting O-type foot-and-mouth disease virus antibody, has the advantages of high sensitivity and wide detection range, and realizes the quantitative detection of foot-and-mouth disease antibody.

The invention discloses a washable hair dye and a preparation method thereof, and belongs to the field of preparation of cosmetics. The washable hair dye contains an agent I and an agent II, wherein the agent I is prepared from the following components in percentage by mass: 0.25 to 5 percent of graphene, 5 to 10 percent of graphene stabilizer, 0.5 to 2.5 percent of ascorbic acid, 1 to 3 percent of propyl gallate, 5 percent of glycerol, 2 to 5 percent of thickener and the balance of water; the agent II is prepared from the following components in percentage by mass: 5 to 10 percent of ferroussulfate, 0.1 to 0.5 percent of the ascorbic acid, 5 percent of the glycerol, 1 to 5 percent of alkaline agent, 2 to 5 percent of the thickener and the balance of water. The washable hair dye disclosedby the invention has the beneficial effects that dyes such as the graphene and the graphene stabilizer are synergized and reasonable ratio is designed, so that the obtained hair dye has the characteristics of good color fastness, low possibility of fading, anti-static property and the like. The washable hair dye is tested by an experiment to indicate that hairs are still kept bright black after 70 times washing.

The invention provides a yoghourt, a method for preparing the yoghourt and a bottled yoghourt. By weight, 1,000 parts of yoghourt are prepared from 860 parts to 940 parts of raw milk, 12 parts to 20 parts of stabilizers, 3 parts to 8 parts of single cream, 65 parts to 90 parts of white granulated sugar, 1 part to 5 parts of whey protein powder and the balance antioxidants. The antioxidants are prepared from at least two kinds of sodium ascorbate, epigallocatechin gallate, tea polyphenol, liquorice antioxidants, vitamins A, ascorbic acid, ascorbyl palmitate, EDTA, tocopherol, gallate, BHA, BHT, D-sodium isoascorbiate, phospholipid, phosphate and rosemary extract. The yoghourt has the at least one advantage of being high in stability, quite good in relish and taste, high in nutritive value and long in shelf life.

Novel compounds useful as chemotherapeutic and chemopreventive agents are provided. The compounds are analogs of polyphenol catechins that occur in green tea, such as epigallocatichin-3-gallate (EGCG), and have the structure of formula (I)wherein R1 through R11 are defined herein. Preferred R4 moieties are selected from O, S, NH and CH2, and in exemplary compounds, R4 is O and R5 is a tri-substituted aroyloxy substituent, such as a 3,4,5-substituted benzoyloxy group. Pharmaceutical compositions are provided as well, as are methods of chemotherapy and chemoprevention.

According to the formula (I), a epigallocatechin gallate glycoside derivative and a pharmaceutically acceptable salt thereof, a preparation method thereof, a pharmaceutical composition containing thesame as an active ingredient, and an anti-cancer composition in combination with an anti-cancer drug are provided. Compared with the anti-cancer drug alone, the combination of the EGCG derivative andthe anti-cancer drug has better tumor inhibiting effect. The invention further discloses the application of the compounds in preparing the anti-tumor pharmaceutical composition and the preparation.

The antioxidant eye drops is a topical ophthalmic formulation that contains four nutraceuticals (namely, astaxanthin, resveratrol, pyruvate and epigallocatechin gallate (EGCG)) having antioxidant, anti-inflammatory, and chelating activity in a carbomer gel carrier. The active ingredients can reduce oxidative stress through free radical scavenging and chelating activity. The carrier is composed of a solution of deionized water containing about 0.4% Carbopol 980 NF, 5.7% sorbitol. 0.01% cetrimide, 0.01% EDTA, and sodium chloride and sodium hydroxide in adequate amounts to adjust both the viscosity and the pH of the topical carrier to pH 7.0-7.4. Use of the formulation may delay the development of cataracts, reduce retinal degeneration, and maintain normal tear flow in dry eye due to the antioxidant, anti-inflammatory, and chelating activity of the active ingredients.

The invention discloses an enteric-coated medicament combination containing epigallocatechin gallate or extract (tea polyphenol) of epigallocatechin gallate, comprising one or more units, each unit contains a core, and the outer periphery of the core is wrapped with at least a membrane layer or a capsule casing of enteric-coated material. In addition, the invention further discloses a preparationmethod and the application of the medicament combination. The enteric-coated medicament combination containing epigallocatechin gallate or extract (tea polyphenol) of epigallocatechin gallate can be well absorbed by alimentary canal, and the biological utilization is greatly improved.