39 results about "Oxidative activity" patented technology

The invention relates to the technical field of food packaging, and particularly discloses an antibacterial and antioxidant chitosan-based fruit fresh-keeping film and a preparation method thereof. The film comprises chitosan, glycyrrhizic acid, origanum essential oil, a plasticizer, a copper ion cross-linking agent, an acetic acid aqueous solution film-forming solvent, vesicle stable loading essential oil and a coordination cross-linking strengthening structure, and all the components construct a composite system through specific interaction. The preparation method comprises the following steps: firstly prefabricating glycyrrhizic acid-origanum vulgare essential oil vesicles, then adding vesicle powder and a plasticizer into a chitosan film-forming solution, uniformly mixing, casting and drying to form a primary film, and subsequently performing ionic crosslinking and balanced cutting to obtain a finished product. The film can be used for fresh-keeping packaging of fruits, has the advantages of being environmentally friendly, stable in structure and lasting in antibacterial and antioxidant activity, and can effectively delay reduction of the quality of the fruits; in addition, the preparation method disclosed by the invention is controllable in process, simple and convenient to operate, good in component synergism and beneficial to large-scale production and application.

Compositions and methods for providing a person with an exogenous and therapeutically effective supply of short chain fatty acids, chlorogenic acid, and, optionally, ketones are disclosed. The compositions include one or more short chain fatty acids (such as butyric acid, butyrate salts, propionic acid, propionate salts, acetic acid, or acetate salts); chlorogenic acid; and, optionally, one or more beta-hydroxybutyrate salts. The compositions and methods are useful for inducing ketosis and / or beta-oxidative activity in a subject. In addition, compositions that include concentrated forms of, and methods of using, chlorogenic acid (alone or in combination with short chain fatty acids and ketones) to induce ketogenesis in a subject are disclosed.

The invention discloses recombinant saccharomyces cerevisiae, a 11-seed oil fermentation product as well as a preparation method and application of the 11-seed oil fermentation product, and belongs to the technical field of synthetic biology and fermentation product preparation. According to the recombinant saccharomyces cerevisiae disclosed by the invention, a caffeic acid coenzyme A ligase 4CL coding gene, a chalcone isomerase CHI coding gene, a flavanone-3-hydroxylase F3H coding gene and a chalcone synthase CHS mutant coding gene are over-expressed, and the chalcone synthase CHS mutant is preferably Y69H / H71Y / Q161K. The preparation method of the 11-seed oil fermentation product comprises the following steps: fermenting a recombinant saccharomyces cerevisiae fermentation solution in the presence of a sophora flower bud extract and caffeic acid to obtain a first fermentation solution; fermenting the lactic acid bacteria fermentation liquor in the presence of 11 seed oil to obtain second fermentation liquor; and mixing the first fermentation liquid and the second fermentation liquid, continuing fermentation, and respectively collecting an oil phase and a water phase after fermentation is finished, so as to obtain a fermentation product. The product provided by the invention has multivitamin antioxidant activity.

The invention belongs to the technical field of food packaging materials, and particularly relates to a Co-MOF (at) CEO intelligent active packaging film and a preparation method and application thereof. Cinnamon essential oil is embedded in a cobalt-based metal organic framework to form composite nanoparticles with antibacterial and ammonia-sensitive functions, then the composite nanoparticles and potato starch are mixed, a film is formed through a solution casting method, and the intelligent active packaging film is obtained. According to the preparation method of the intelligent active packaging film provided by the invention, the water solubility of the potato starch packaging film is reduced, the prepared intelligent active packaging film has good antibacterial, antioxidant activity, mechanical and barrier properties and good sensitivity to ammonia, the freshness of meat can be monitored in real time only through the color change of the packaging film, and the method is suitable for large-scale popularization and application. The fresh-keeping and freshness visual monitoring of food such as fish meat and the like can be realized at the same time, and the method has a good application prospect in the field of intelligent active packaging.

The invention discloses an antioxidant composition based on pH response type microcapsules as well as a preparation method and application of the antioxidant composition. Wherein the antioxidant composition contains ferulic acid, L-ascorbic acid-2-glucoside and tocopheryl acetate, and the mass ratio of the ferulic acid to the L-ascorbic acid-2-glucoside to the tocopheryl acetate is 1 to (3 to 5) to (5 to 10). A composition of ferulic acid, L-ascorbic acid-2-glucoside and tocopheryl acetate in a specific ratio is used as a core material, and a chitosan-sodium alginate compound is used as a wall material. The microcapsule can effectively protect the stability of antioxidant active ingredients in the storage period, and can specifically respond to a weak acidic pH environment of skin to release active matters so as to realize intelligent delivery. Components of the core material have a synergistic anti-oxidation effect, so that the final effect of the product is remarkably improved. The cosmetic composition containing the microcapsules has the advantages of being high in stability, remarkable in effect, good in skin feeling and the like.

The invention belongs to the technical field of microbial fermentation, and particularly relates to rhodotorula mucilaginosa JQRM001 and application thereof. The invention provides a rhodotorula mucilaginosa JQRM001, the Latin name of the rhodotorula mucilaginosa JQRM001 is Rhodotorula mucilaginosa, the rhodotorula mucilaginosa JQRM001 is preserved in China General Microbiological Culture Collection Center, the address is No.3, Yard 1, Beichen West Road, Chaoyang District, Beijing, the preservation date is July 15, 2025, and the preservation number is CGMCC No.35240. The invention further provides a preparation method of the rhodotorula mucilaginosa. The rhodotorula mucilaginosa JQRM001 not only has excellent performance of high temperature resistance and acid resistance, but also can be used for specifically synthesizing alkylpyrazine flavor substances and remarkably improving the antioxidant activity of plant polysaccharides.

This invention provides viscose macrobiofibers containing antioxidant active components and a method for preparing them. [Solution] The viscose macrobio fiber prepared by reacting raw materials by weight of 20-24 parts COFs carrier, 5-8 parts plant-derived antioxidant active component, 200-240 parts spinning solution, 2-4 parts sodium dodecyl sulfate, 2-4 parts glyceryl monooleate, 3-5 parts cyclodextrin, 2-4 parts titanium dioxide, and 3-5 parts silane coupling agent, has the antioxidant active component attached to the COFs carrier during the preparation process. In the prepared viscose macrobio fiber, the COFs carrier functions as the backbone of the viscose macrobio fiber, and the ends of the COFs carrier are exposed to or close to the surface of the viscose macrobio fiber. The antioxidant active component on the COFs carrier is easily transferred to the surface of the fiber, and the viscose macrobio fiber has a good antioxidant effect.

This invention relates to the fields of environmental pollution remediation and biocatalysis, and provides a method for preparing a self-supplied H2O2 cathode material via an electroenzyme cascade and its application. The cathode material is an ionic liquid-modified CPO-IL. EMB The bio-hybrid material formed by immobilizing molybdenum disulfide-modified MoS2@Co-CNNT composite material, namely CPO-IL EMB / MoS2@Co-CNNT. An electroenzyme cascade degradation system was constructed using this biohybrid material as the cathode. By controlling the electrode potential, controllable H2O2 generation was achieved while protecting the Fe(III) in the iron porphyrin ring of CPO from reduction, thus maintaining the intrinsic oxidative activity of the enzyme. The in-situ generated H2O2 activates CPO-IL. EMB It efficiently catalyzes the oxidative degradation of mesotrione. This invention requires no external CPO-IL. EMB It is green and environmentally friendly, with high degradation efficiency, and has promising applications in agricultural wastewater treatment and environmental remediation.

The invention belongs to the technical field of bioactive peptide preparation, and discloses a preparation method of a tylorrhynchus antioxidant peptide, which comprises the following steps: mixing tylorrhynchus homogenate with enzyme, and carrying out enzymolysis to obtain the tylorrhynchus antioxidant peptide, the enzyme comprises flavourzyme and pancreatin. The invention provides the preparation method of the tylorrhynchus antioxidant peptide which is high in antioxidant activity and suitable for industrial mass production, the protein hydrolysis degree is improved, and the oxidation resistance of the tylorrhynchus antioxidant peptide is improved. The method can effectively solve the problems of low efficiency, high cost and inapplicability to large-scale extraction and preparation of the tylorrhynchus antioxidative peptide in the existing polypeptide extraction process.

An induction medium and induction culture method for lavender suspension cells having high antioxidant activity. Suspension cells having a high ABTS free radical scavenging rate can be cultured by optimizing the formulation of a medium, and the contents of total phenols, total flavonoids and total triterpenoids are relatively high. Additionally, lavender suspension cells induced by using the medium grow rapidly and have a stable system, and extracts thereof can significantly reduce redundant ROS generated by oxidative stress of HaCaT cells, exhibit good biological antioxidant activity, and provide a reference for the development of lavender secondary metabolite resources and the like.

The invention discloses a method for improving the malic acid-lactic acid fermentation performance of Oenococcus oeni SD-2a in red wine, and belongs to the technical field of wine brewing. According to the method disclosed by the invention, after an alcoholic fermentation stage of the red wine is finished, filtration and sterilization are carried out, proline and Oenococcus oeni SD-2a are added, and then malic acid-lactic acid fermentation is carried out. The invention finds that the stress effect of high-concentration alcohol on Oenococcus oeni SD-2a can be reduced by adding proline in the malic acid-lactic acid fermentation stage after the alcoholic fermentation stage in the wine is ended; the fermentation effect is promoted, so that the aroma complexity of the wine is improved; the antioxidant activity of the grape wine is improved by the proline; phenolic compounds in the wine are protected, and finally the quality of the wine is remarkably improved.

The application discloses a method for brewing semi-solid state Luzhou-flavor liquor with antioxidant activity, which comprises the following steps: adding high-gluten corn bran obtained by regulating the milling and steaming procedure into low-gluten corn, and adding composite reinforcing strains to the corn, so as to brew Luzhou-flavor liquor with good antioxidant activity and improved flavor quality. The composite reinforcing strains are composed of Saccharomycopsis fibuligera and Bacillus subtilis. The method for brewing Luzhou-flavor liquor with high antioxidant activity comprises the following steps: adding high-gluten corn bran obtained by the specific milling and steaming procedure into low-gluten corn, and adding composite reinforcing strains with specific amount and proportion to semi-solid state fermentation with specific Luzhou-flavor Daqu, so as to obtain liquor with antioxidant activity of more than 80% and meeting the national standard of semi-solid state Luzhou-flavor liquor.

The invention discloses a citric acid and licochalcone B repairing composition and application, and belongs to the technical field of medicine. According to the invention, the repair promoting potential of citric acid and the anti-inflammatory and anti-oxidation activity of licochalcone B are known, and the two natural active components with different action mechanisms are creatively compounded according to a specific proportion; therefore, the citric acid and licochalcone B repairing composition which has a synergistic effect on repairing gastric mucosa epithelial cell injury caused by HP infection is provided, the effect is better than that of a single component, safety and compliance are better, and a new technical approach is provided for solving the repairing problem of clinical gastric mucosa injury.

The invention relates to a wound surface treatment agent and a preparation method thereof, and relates to the technical field of medical instruments, polyvinylpyrrolidone (PVP) is adopted to carry out organic molecule inclusion and stabilization on chlorine dioxide, so that chlorine dioxide keeps a dissolved state and chemical stability in a physiologically compatible weakly alkaline solution, and can be directly used without acidic activation; therefore, chemical stimulation of acid to the wound surface is avoided. When the stable system is in contact with wound exudate, the stable system can gradually release chlorine dioxide molecules with strong oxidation activity under the action of a body fluid ion environment, and a broad-spectrum and efficient antibacterial effect is locally played on a wound. Meanwhile, the released chlorine dioxide can promote the local blood coagulation process through the oxidation effect, and the healing process is facilitated. On the basis, the comprehensive performance is further enhanced through dosage form design, the effects of rapidly astringing wounds, reducing infection and promoting healing are achieved, and meanwhile the skin wound dressing is suitable for nursing skin wounds with different characteristics.

The invention relates to the technical field of microorganisms, and discloses a plant lactobacillus XJSN202504 and application thereof in acute alcoholism, the plant lactobacillus XJSN202504 is preserved in China General Microbiological Culture Collection Center (CGMCC), the preservation number is CGMCC NO.34746, and the preservation time is June 3, 2025. The invention further discloses a preparation method of the plant lactobacillus XJSN202504. The lactobacillus plantarum XJSN202504 disclosed by the invention can be used for improving liver injury related indexes in serum and expression of inflammation related genes, and also can be used for adjusting the activity of antioxidant enzymes in the liver and relieving alcohol-induced oxidative stress injury; moreover, gastric mucosa, small intestine and colon injuries caused by a large amount of alcohol can be effectively prevented, the anti-inflammatory activity and the antioxidant activity are better, the anti-alcohol function can be achieved through gastrointestinal tracts, and the effects of protecting liver and digestive tract mucosa are achieved.

The present application relates to the technical field of cosmetic composition, and particularly relates to a firming and anti-wrinkle composition, a preparation method and application thereof, which comprises the following steps: preparing a ternary random copolymer by polymerization, loading tetrahydrocurcumin, and preparing a temperature-sensitive nanoparticle dispersion liquid through dialysis and temperature control refining; hydrating, sterilizing and cooling a humectant, a thickening agent and a chelating agent; sequentially adding an antioxidant active component, a polypeptide and a plant repair component; adjusting pH, compounding a preservative system, adding the temperature-sensitive nanoparticle dispersion liquid, homogenizing, defoaming, filling and obtaining a finished product. The present application realizes stable, slow release of active ingredients through a temperature-sensitive nano-carrier, and synergistically enhances the polypeptide, the lipohydric antioxidant component and the gynostemma pentaphyllum repair component, effectively improves the defects of easy inactivation and poor transdermal absorption of active ingredients, and has excellent multi-functional skin care effects of moisturizing, firming, anti-wrinkle and antioxidant.

The invention provides an organic selenide. The organic selenide has a structure shown as the following I. The natural active compound sinapic acid is combined with the selenium element to synthesize the novel organic selenium compound, so that the blank of drug combination of a traditional Chinese medicine antioxidant activity structure and the selenium element is filled up, the antioxidant activity of the traditional Chinese medicine antioxidant activity structure and the selenium element generates a synergistic effect, and the safety and the antioxidant effect are improved; and the compound has huge potential in the aspects of preparing antioxidants, medicines for preventing and / or treating diseases caused by oxidative damage and the like.

The present disclosure relates to a washing method, a device, and a storage medium. The method includes: when a washing machine is performing washing, turning on an anti-color bleeding device of the washing machine, the anti-color bleeding device being configured to release an oxidizing active substance; controlling the washing machine to allow water-entering, and stopping water-entering when a level of water entering the washing machine reaches a first target water level; and when a duration of stopping water-entering reaches a first duration, controlling the washing machine to allow water-entering, and when the level of water entering the washing machine reaches a second target water level, stopping water-entering and washing clothes in the washing machine, the second target water level being higher than the first target water level.

This invention provides a method for extracting astaxanthin from Haematococcus pluvialis and its application. The method includes the following steps: S1. Raw material pretreatment; S2. Enzymatic hydrolysis with a complex enzyme; S3. Solubilization with a surfactant; S4. Adsorption by iron(III) oxide-cellulose porous microspheres; S5. Magnetic separation and washing; S6. Astaxanthin elution and microsphere recovery; S7. Concentration and drying. This invention utilizes a complex enzyme consisting of cellulase, alginate lyase, and mannanase to synergistically hydrolyze the multilayer polysaccharide structure of thick-walled spores of Haematococcus pluvialis, thereby fully releasing astaxanthin. Furthermore, iron(III) oxide-cellulose porous microspheres with benzyl and octyl surface modifications are used for highly selective adsorption of astaxanthin, combined with magnetic separation technology, thus improving the astaxanthin yield. The extraction process of this invention is carried out under medium-low temperature conditions, and butylated hydroxytoluene is added to the eluent, effectively avoiding thermal degradation, photolysis, and oxidation of astaxanthin, resulting in a high retention rate of antioxidant activity in the obtained astaxanthin.

This invention discloses a method for breeding and screening Spirulina strains with high antioxidant activity, relating to the field of microalgae biotechnology. The method involves culturing different candidate Spirulina strains in multiple culture units, installing multispectral sensor arrays in each culture unit to collect real-time spectral data and environmental parameter data during the Spirulina growth process, and obtaining spectral feature vectors related to antioxidant activity. This method enables independent identification and comparative analysis of the optimal activity state of each strain, effectively avoiding missing the activity peak window, significantly improving the screening efficiency and stability of superior high antioxidant activity strains, and providing reliable technical support for the targeted breeding and large-scale application of Spirulina strains.

The present disclosure provides a method of extracting DNA from fish and a method of using the DNA extract. The DNA extract provided herein produces the efficacies in ameliorating or treating osteoarthritis or osteoporosis. Mice experiments prove that clinical parameters associated with osteoarthritis or osteoporosis are improved by the DNA extract. In addition, the DNA extract exhibits free radical scavenging activities, anti-oxidative activities, anti-depressant activities, and black hair promoting activities.

A tooth whitening gel preparation machine and a preparation method therefor. The tooth whitening gel preparation machine is characterized by comprising an activation reaction kettle (13), wherein the activation reaction kettle (13) comprises an activation reaction kettle electrode driving plate unit, an activation reaction kettle electrode (5), a liquid inlet and outlet unit, an air inlet and outlet unit, and a liquid activation pool (8); the activation reaction kettle electrode driving plate unit is located at an upper portion of the activation reaction kettle electrode (5), and the liquid activation pool (8) is located at a lower portion of the activation reaction kettle electrode (5); and the liquid activation pool (8) and the activation reaction kettle electrode (5) form a sealed chamber. The hydrogen peroxide solution prepared using the device and method not only has high oxidative activity, but is also mild, non-irritating, and non-corrosive.

The invention discloses a method for improving lycopene isomerization and meat digestibility through food habit interaction, and particularly relates to a processing method for synergistically improving lycopene cis-isomerization rate and meat protein digestibility in tomato meat dishes through grease thermocatalysis and potential of hydrogen step regulation. Comprising the following core technologies: 1) a molecular catalysis technology: catalyzing the conversion of lycopene from trans configuration to 5-cis configuration with higher bioavailability (the isomerization rate is greater than 70%) in a hot working process by utilizing a composite grease system formed by meat fat and vegetable grease; 2) a protein modification technology: opening a myofibrillar protein space structure and improving trypsin cutting site accessibility (in vitro digestibility is greater than 80%) through a staged synergistic effect of tomato organic acid and heat treatment, and 3) a system interaction technology: constructing an oil-meat-tomato three-phase edible interaction system, and realizing synchronous synergism of antioxidant activity and digestion and absorption performance.

The present application relates to the field of analytical chemistry and food and pharmaceutical testing technology, and particularly relates to a rutin antioxidant activity colorimetric determination method based on composite nano-enzyme, comprising: mixing a to-be-detected sample solution and an ABTS free radical cation working solution to perform a first reaction, so that antioxidant substances in the sample and ABTS free radical cations perform a scavenging reaction; adding the composite nano-enzyme, 3,3',5,5'-tetramethylbenzidine solution and hydrogen peroxide solution to the system after the first reaction is completed, to initiate a second reaction; measuring the absorbance value of the system at a specific wavelength after the second reaction, and comparing the absorbance value with a standard curve obtained through the same steps, to calculate the antioxidant activity in the to-be-detected sample in terms of the equivalent concentration of rutin; through optimization of the reaction conditions, the method of the present application simplifies the operation steps, and can provide accurate measurement results in a wider concentration range.

The invention provides an acanthopanax fruit and leaf composite tea bag and a preparation method thereof, treated deastringency fruits and high-aroma fried leaves are compounded according to the precise ratio of the fruits to the fried leaves being 1: (0.75-1.2), and syringin in the fruits and syringin, flavone and other components in the leaves generate the best synergistic interaction effect through precise compounding of the fruits and the leaves. Meanwhile, aiming at high astringent taste of the fruits, a low-temperature wall breaking process of less than or equal to 40 DEG C is adopted, and directional astringent taste removal is performed on the premise of retaining activity; and for the leaves, segmented temperature-controlled stir-frying (de-enzyming at 180 DEG C + slow baking at 120 DEG C) is adopted, so that the contradiction between aroma enhancement and glycoside retention is balanced. By improving the processing technology and optimizing the fruit and leaf compounding ratio, the product has the characteristics of reservation of high-activity components, high antioxidant activity and the like, has remarkable and predictable effects, has a solid material basis for health-care functions such as fatigue resistance and the like, and has extremely high market competitiveness.

This invention belongs to the field of functional microbial technology, specifically relating to a fermented *Lactobacillus rimoxifer* and its application in anti-aging. The fermented *Lactobacillus rimoxifer* F-B9-1-2 and its culture provided by this invention exhibit significant in vitro antioxidant capacity. A 0.5 mg / mL culture showed a scavenging rate of 89.3±2.1% for ABTS free radicals, demonstrating its antioxidant efficacy by reducing free radical damage to cells and maintaining normal cell function. Furthermore, treatment with its culture reduced the SA-β-gal positive cell rate from 12.8% to 7.1%, exhibiting good in vivo antioxidant activity, thus helping to inhibit or alleviate the aging process.

The invention discloses a calcium-based desulfurizing agent and a preparation method thereof. The calcium-based desulfurizing agent is prepared from the following raw materials in percentage by mass: 53-61% of modified calcium hydroxide, 22-27% of modified activated carbon, 4-8% of an alkali metal compound, 3-5% of a metal oxide and 7-10% of a composite adhesive, the modified calcium hydroxide is obtained by carrying out multi-stage hydrothermal reaction on calcium hydroxide and treating and modifying silicon dioxide and sodium silicate; the modified activated carbon is oxidized activated carbon loaded with iron oxide and magnesium oxide. The calcium-based desulfurizing agent prepared by the method has very high activity, the removal efficiency of SO2 in flue gas can be improved, and the utilization rate of the calcium-based desulfurizing agent can also be improved.

This invention relates to the field of nanomaterial preparation technology, and particularly to a targeted nanozyme with catalytic antioxidant activity, its preparation method, and its applications. The targeted nanozyme with catalytic antioxidant activity provided by this invention comprises Ru / LDH nanosheets and a myocardial targeting peptide; the myocardial targeting peptide is covalently coupled to the surface of the Ru / LDH nanosheets via DSPE-PEG-COOH; the Ru / LDH nanosheets comprise layered double metal hydroxide LDH and Ru introduced by etching and dispersed in a single-atom manner. The targeted nanozyme provided by this invention exhibits multi-enzyme synergistic activity, acid stability, and pathological myocardial targeting, and can be used for the treatment of oxidative stress-related cardiovascular diseases such as diabetic cardiomyopathy. The targeted nanozyme provided by this invention has good biocompatibility and safety, can target cardiac lesions, reduce oxidative damage, inhibit fibrosis and ventricular remodeling, and promote cardiac function recovery.

The invention discloses a linen fiber one-step degumming method based on hot alkali activated peroxydisulfate, and relates to the technical field of linen fiber treatment. According to the method, peroxydisulfate serves as an oxidizing agent, alkali metal hydroxide provides an alkaline environment, a hot-alkali synergistic activation system is constructed under the heating condition, and ABTS can be further contained in the activation system, so that peroxydisulfate activation is promoted, and the generation and utilization efficiency of active species is improved. According to the method disclosed by the invention, peroxydisulfate is synergistically activated by heat and alkali to generate oxidizing active species, and non-cellulose components such as lignin, pectin and hemicellulose are removed in combination with the hydrolysis effect of an alkaline environment on colloid components. The method provided by the invention is relatively simple in process flow, does not need to additionally add a metal catalyst, can realize removal of non-cellulose components in the raw flax in one-step treatment, and gives consideration to both fiber performance and whiteness improvement.

The invention discloses an inulin iron compound and application thereof, and relates to the technical field of food processing, and the inulin iron compound is prepared by the following steps: adding a trivalent iron salt into a solution containing inulin and a complexing agent, so that hydroxyl on an inulin polysaccharide chain and Fe < 3 + > are subjected to a complexation reaction, and the inulin iron compound is obtained. The iron content of the inulin iron compound is as high as 10.12%, and the inulin iron compound has relatively high thermal stability, antioxidant activity, controllable iron release characteristic and prebiotic characteristic, and has certain application potential in the aspect of serving as a functional iron nutrition enhancer.