12 results about "Oxidative degradation" patented technology

This invention belongs to the fields of biomedicine, beauty, and personal care health technology, and discloses a dual-target oil-controlling peptide co-amorphous assembly, its preparation method, and its application. The method involves adding capryloylglycine and acetyl tetrapeptide-5 to an alcohol solution, heating to dissolve, rotary evaporating, and drying to obtain a co-amorphous compound. This compound is then mixed with a cyclodextrin compound and water, rotary evaporating, and drying to obtain the dual-target oil-controlling peptide co-amorphous assembly. This invention employs a co-amorphous combination with cyclodextrin inclusion to assemble acetyl tetrapeptide-5 and capryloylglycine, solving the problem of their large solubility differences and difficulty in coexistence, and significantly improving the solubility of capryloylglycine. This assembly enables simultaneous transdermal delivery of the two active components through nano-assembly, helping to enhance the stability of acetyl tetrapeptide-5 and reduce its oxidative degradation. The two components synergistically control oil through a dual pathway of inhibiting 5α-reductase and targeting the MC5R receptor, respectively, exhibiting superior bioavailability and efficacy compared to a single component.

This invention belongs to the field of water environment treatment and restoration technology, specifically involving a method for simultaneous restoration of water bodies and sediments using a microbial electrochemical restoration device. The restoration method provided in this invention differs from traditional methods that enhance the transport of electron acceptors such as oxygen or nitrates into the sediment. Instead, it can sequentially form two reaction zones, aerobic and anaerobic, in the longitudinal section of a device. In the anaerobic zone (sediment), electrons from pollutants are directionally pumped out to the water body driven by the redox potential difference between the sediment and water phases. Therefore, pollutants in the sediment and water body can undergo oxidative degradation and reductive degradation, respectively, thereby achieving simultaneous restoration of water bodies and sediments.

The application relates to a composite slow-release material for groundwater remediation and a preparation process thereof, and relates to the technical field of groundwater remediation materials. The preparation raw materials comprise the following components in mass fractions: 20-40 parts of a composite oxidant, 30-50 parts of an inner layer wall material, 10-20 parts of glucose, 40-60 parts of an outer layer wall material and 5-15 parts of a Fenton self-mesoporous titanium dioxide. The preparation process comprises the following steps: preparing the Fenton self-mesoporous titanium dioxide, preparing an inner layer microcapsule and preparing the composite slow-release material. The application has the effect of improving the pollutant degradation performance of the composite slow-release material. The composite slow-release material has good oxidative degradation capacity, can promote the growth and metabolism of microorganisms in groundwater, cooperates with the microorganisms to degrade pollutants, and improves the removal efficiency of the pollutants and the persistence of the remediation effect.

This invention discloses a high-transparency FDM 3D printing-specific PLA toughening filament, comprising, by weight: 96.7% PLA 101; 3% ATBC; and 0.3% compound antioxidant; wherein the compound antioxidant is prepared by compounding antioxidant 1010 and antioxidant 168 in a 1:1 ratio. A method for preparing the high-transparency FDM 3D printing-specific PLA toughening filament includes the following steps: the raw materials are vacuum dried and then mixed uniformly at 60℃ for 4 hours, directly fed into a single-screw extruder, with five temperature control stages of 180℃ / 190℃ / 200℃ / 205℃ / 215℃, a take-up speed of 100m / min, cooling water temperature of 60℃ in the first stage and 50℃ in the second stage, online diameter adjustment, and winding to obtain a 1.75mm±0.05mm filament. The invention achieves the following results: the oxidative degradation rate of PLA molecular chains is reduced by more than 65%, the average spherulite size is ≤5μm, and the crystallinity is controlled at 18%; the light transmittance of the consumable is ≥92%, the haze is ≤1.5%, the yellowing index ΔE after 72h accelerated aging is ≤1.0, the elongation at break is ≥12% (while also considering toughness), the printed parts have a smooth, hazy surface, the interlayer shear strength is ≥3.2MPa, and the dimensional accuracy is stable, meeting the requirements of high transparency scenarios such as medical models and transparent shells.

The application discloses a time sequence control type composite pollution repair material for facility agriculture soil and a preparation method and application thereof, and belongs to the technical field of soil repair. The repair material is a three-layer core-shell structure particle, which comprises, from inside to outside, an inner core layer composed of biodegradable polyester wrapping pesticide degrading enzyme and pesticide adsorbent, a middle layer composed of water / ion responsive hydrogel wrapping heavy metal fixing agent and oxidative degradation catalyst, and an outer shell layer composed of brittle degradable polymer wrapping micro / nano plastic surface capping agent. The repair material realizes time sequence and synergistic repair of micro / nano plastic, available Cd and malathion by triggering the release of the outer shell layer through plowing mechanical force, triggering the slow release of the middle layer through irrigation water response, and triggering the release of the inner core layer through rhizosphere microbial enzyme. The material has simple preparation process, convenient application and good application prospect.

This invention discloses a waterproof mesh film for plastic greenhouses, relating to the technical field of high-toughness, UV-resistant polymer compositions. The waterproof mesh film for plastic greenhouses is prepared from raw materials comprising the following parts by weight: 60-80 parts polyolefin resin, 15-35 parts polyolefin elastomer, 10-25 parts filler and reinforcing agent, 0.3-1.5 parts light stabilizer, 0.2-0.8 parts antioxidant, and 0.5-2 parts processing aid. The addition of light stabilizer and antioxidant, and their synergistic effect, effectively prevents the photo-oxidation reaction and thermal oxidative degradation of polymer materials under ultraviolet radiation, significantly improving the UV aging resistance of the waterproof mesh film and reducing problems such as material performance deterioration, discoloration, fading, and decreased waterproof performance caused by long-term outdoor use. The waterproof mesh film of this invention exhibits significant advantages in flexibility and impact resistance, making it less prone to tearing and damage when facing harsh weather, frequent folding, or contact with sharp objects, thus extending its service life.

The application is a kind of deep treatment method of sulfur erythromycin preparation wastewater, relating to the technical field of pharmaceutical wastewater treatment, comprising: the wastewater after oxidative degradation is introduced into a vertical cyclone degassing tank to separate gas, then a macromolecular flocculant is added in a micro-flocculation reaction tank, precipitated in an inclined tube sedimentation tank, and subjected to cross-flow filtration. In the application, the deep synergy of hydraulic cavitation and double-frequency ultrasonic catalytic oxidation constructs a multi-level advanced oxidation degradation system, which significantly improves the degradation effect of sulfur erythromycin and its derivatives; the hydraulic cavitation utilizes the fluid dynamics effect to generate cavitation bubble collapse, realizing the preliminary ring-opening reaction of organic pollutants; the double-frequency ultrasonic wave utilizes the complementary effect of different frequency sound waves, on the one hand, the mechanical shear force generated by low-frequency sound waves breaks the macromolecular agglomerates, reducing the steric hindrance of the reaction space, on the other hand, the high-frequency sound wave generates high-concentration strong-oxidation free radicals, realizing the deep oxidation of pollutant molecules.

The application relates to the technical field of amino acid detection equipment, in particular to a sample smashing and sample preparation integrated detection device for amino acid-containing samples, which comprises a shell, a smashing bin is fixedly installed at the top of the inner side of the shell, a cutter is rotationally connected to the lower end of the smashing bin, a No.1 motor is fixedly connected in the shell, the output shaft of the No.1 motor is coaxially connected with the cutter, an air inlet for introducing inert gas is arranged on the lower side of the smashing bin, a material conveying pipe is arranged on the outer wall of the smashing bin, and the material conveying pipe is connected with the smashing bin through a communication port. The smashing, screening, moisture detection and packaging links are integrated in situ, compared with the traditional segmented sample preparation process, the sample transfer steps of the amino acid sample between different devices are greatly reduced, the risks of sample residue loss, oxidative degradation and secondary moisture absorption are reduced from the process source, and a higher-stability standardized pretreatment sample is provided for amino acid quantitative analysis.

The application discloses a kind of water body pollutant degradation methods based on colloidal calcium peroxide, the water body pollutant degradation methods based on colloidal calcium peroxide include the following steps: colloidal calcium peroxide is mixed with the water body to be treated containing pollutant, forms mixed water body, and the pollutant is degraded by reaction.This application utilizes homogeneous nucleation method to prepare colloidal calcium peroxide, then utilizes colloidal calcium peroxide in water body by the active site of surface calcium ion and combines with pollutant, and utilizes direct electron transfer of its surface peroxide group, realizes the efficient oxidative degradation to various refractory pollutants.This application colloidal calcium peroxide degradation pollutant mechanism is mainly dominated by non-radical effect, avoids the problem that traditional free radical oxidation path is easily interfered by water body matrix, can keep efficient degradation performance in wide pH range, has good anti-interference ability.

This application discloses a photovoltaic backsheet base film material and its preparation method. The photovoltaic backsheet base film material is provided with a first layer, a first transition layer, a second layer, a second transition layer, and a third layer from the outside to the inside. The first layer includes polyethylene terephthalate and a stabilizer, the stabilizer including an ultraviolet absorber and a hindered amine light stabilizer. The second layer includes polyethylene terephthalate and a light reflector, the light reflector being suitable for reflecting sunlight and blocking ultraviolet light penetration. The first transition layer includes isophthalic acid copolyester and an antioxidant, the antioxidant being suitable for decomposing peroxides generated at the interface of the second layer and blocking the transfer of the oxidative degradation chain reaction to the first layer. The second transition layer includes isophthalic acid copolyester and a first reactive compatibilizer. The third layer includes isophthalic acid copolyester and a second reactive compatibilizer.

This invention relates to the field of food processing technology, specifically a process for roasting black peanuts without removing the seed coat. The process includes the following steps: screening black peanut raw materials to obtain clean black peanuts; scalding the clean black peanuts in hot water at 80℃-100℃, then draining the surface moisture; evenly spreading the drained black peanuts and placing them in a constant temperature oven at 170℃-190℃ for three-stage roasting; after the first and second stages of roasting, removing them, shaking to mix them, and immediately placing them in a heat-insulated, airtight container to rehydrate for 3-8 minutes; after the third stage of roasting, cooling to room temperature to obtain a finished roasted black peanut product with an intact seed coat. This invention effectively solves the problem of seed coat detachment during black peanut roasting by organically combining three-stage roasting with airtight rehydration. The airtight environment effectively reduces the contact between anthocyanins and oxygen during the rehydration stage, helping to reduce the risk of anthocyanin oxidative degradation.