5results about How to "Solve solubility" patented technology

The present application relates to a kind of high stability water-in-oil PDRN emulsion and its preparation method, belong to the field of biotechnology;The preparation method includes the following steps: (1) PDRN enzymolysis: PDRN is added in DNaseI, supplement metal ion activates enzyme, when fragment enrichment shows <800bp, terminate enzymolysis reaction, obtain crude enzymolysis solution;(2) moderate molecular weight screening: pressurized ultrafiltration crude enzymolysis solution with ultrafiltration membrane, and screen out the target fragment of the permeate of molecular weight in 120-500bp;(3) water phase system optimization: 1,3-propanediol and ubiquinol are added in the permeate;(4) semi-continuous feeding gradient emulsification.The present application is by precise control PDRN molecular weight to take into account stability and solubility, optimize water phase component to realize system viscosity and transparency double standard, cooperate gradient emulsification to guarantee water-in-oil system stability, significantly improve product comprehensive quality and application value, with outstanding technical advantages.

The invention discloses a pH-responsive supramolecular salicylic acid nanogel and a preparation method and application thereof, and the pH-responsive supramolecular salicylic acid nanogel comprises the following preparation raw materials by mass: 3-30% of salicylic acid; 0.6 to 1.5 percent of orthoester; 30 to 50% of poloxamer; 0.5 to 5.0 percent of polyhydric alcohol; 0.5-1% of a surfactant; and the balance solvent. Through supramolecular design, salicylic acid molecules and a precursor containing a pH sensitive group (orthoester) are integrally constructed into a nanogel network through non-covalent self-assembly, so that the contradiction between solubility and irritation of high-concentration salicylic acid is fundamentally solved; the prepared pH-responsive supramolecular salicylic acid nanogel can realize the synergistic effects of stable loading of high-concentration salicylic acid, targeted response release of an inflammatory site and low skin irritation, and the preparation process is simple, convenient and environment-friendly, is suitable for industrial production, and has a wide application prospect in the field of functional skin care products.

The application discloses a kind of applied in nonpolar organic system removal divalent mercury ion mercapto activated carbon and preparation method, belong to the technical field of demercuration.The method includes: first, activated carbon is contacted with strong oxidizing acid, and the surface of activated carbon is oxidized and modified, and pre-modified activated carbon is obtained;Afterwards, pre-modified activated carbon is placed in buffer solution, and is activated and handled;Afterwards, amidinothiourea is added to carry out coupling reaction, and activated carbon intermediate is obtained;Activated carbon intermediate is placed in organic solvent system containing mercaptan donor, catalyst and dehydrating agent, and is reacted under sealing and heating condition, introduces mercapto functional group, and obtains crude product modified activated carbon;Crude product modified activated carbon is stabilized by using antioxidant reagent, and is obtained.The mercapto activated carbon prepared by the application can significantly improve the removal efficiency of divalent mercury ion in nonpolar organic system.

The utility model relates to the technical field of spice powder processing, and provides a spice powder soaking device which comprises a device body, a soaking barrel is movably embedded in the device body, sliding grooves are formed in the periphery of the interior of the device body, a plurality of sliding blocks are fixedly installed on the outer surface of the soaking barrel, and the sliding blocks are arranged in the device body. The outer surfaces of the multiple sliding blocks are connected to the inner surfaces of the sliding grooves in a sliding mode, telescopic columns are arranged at the bottoms of the multiple sliding blocks, and reset springs are arranged at the bottoms of the multiple sliding blocks. The contact mode of spice powder and liquid is continuously changed, the mixing effect of the spice powder and the liquid is enhanced, and the spice powder is more uniformly dispersed in the liquid through the mechanical lifting motion, so that the mixing efficiency is improved, and the problem of too slow mixing caused by static soaking is avoided.

The utility model discloses a herbicide sprayer for agricultural production, which relates to the technical field of sprayers and comprises an unmanned aerial vehicle and a spraying mechanism, a heating mechanism and a filtering mechanism are arranged on the spraying mechanism, the spraying mechanism comprises a pesticide storage box, a submersible pump, a battery pack and an atomizing nozzle, and a pesticide adding port is arranged at the top of the pesticide storage box. The pesticide storage box is fixedly installed on the lower end face of the unmanned aerial vehicle, the submersible pump is fixedly installed in the pesticide storage box to supply pesticide to the atomization spray head, the heating mechanism comprises a heating jacket and a disc-shaped electric heating wire, the disc-shaped electric heating wire is installed in the pesticide storage box, and the heating jacket is fixedly installed on the atomization spray head. The utility model has the advantage of integrating heating and filtering functions, and solves the problems that the liquid medicine is easy to freeze to block the nozzle and the spraying precision is influenced by undissolved particles in a low-temperature environment.