8 results about "Soya lecithin" patented technology

The invention discloses a drug-loaded protein-phospholipid composite nanoparticle as well as a preparation method and application thereof. The drug-loaded protein-phospholipid composite nanoparticle has a core-shell structure, an inner core comprises silk fibroin and a hydrophilic drug, a shell layer comprises a plurality of phospholipid bimolecular layers which are stacked layer by layer, each phospholipid bimolecular layer comprises soya bean lecithin, a hydrophobic drug is embedded in a hydrophobic region in each phospholipid bimolecular layer, and the hydrophobic drug is embedded in a hydrophobic region in each phospholipid bimolecular layer. Silk fibroin and a hydrophilic drug are embedded in the hydrophilic area, and zein and cholesterol are embedded in the phospholipid bilayer. The drug-loaded protein-phospholipid composite nanoparticle can simultaneously embed a hydrophobic drug and a hydrophilic drug, has the advantages of large drug loading capacity, high bioavailability, good stability, good transdermal permeation effect and the like, has wide application prospects in the fields of transdermal drug delivery preparations and skin care products, and is simple in preparation method, mild in reaction condition and suitable for industrial production. The method is suitable for large-scale industrial production and application.

The invention belongs to the technical field of semen cryopreservation, and particularly relates to a sheep semen cryopreservation solution and a semen preservation method. The sheep semen freezing medium comprises the following components: Tris, citric acid, fructose, lactose, trehalose, penicillin, streptomycin, soya bean lecithin, nobiletin, glycerol and water. The nobiletin with a specific content is used as an effective antioxidant component of the sheep sperm cryopreservation agent, so that the nobiletin plays an antioxidant role when the sperms are frozen, and the sperms are more stable in the cryopreservation process. After nobiletin is added, the activity and movement performance of frozen and unfrozen sheep sperms can be remarkably improved. The oxidative stress injury of the sperms in the freezing process is effectively reduced, and the oxidation resistance of the sperms is improved.

The invention discloses a Spartina alterniflora drug control technology, and relates to the technical field of coastal wetland ecological management, the early stage of bud differentiation of Spartina alterniflora is monitored through dynamic opportunity selection, and the soil salinity is adjusted by selecting a time window 2 hours after ebb tide and with a sunny day probability greater than 80% in combination with tide forecast. The method comprises the following steps: preparing a composite synergistic agent containing 25% imazapyr, soya bean lecithin, sodium humate and other materials, uniformly spraying the composite synergistic agent to leaf surface and root soil of plants by adopting high-pressure atomization equipment after ebb tide, supplementing an agent containing double nano titanium dioxide in case of rainfall, and reducing environmental interference and improving agent absorption efficiency through tide synergy and salinity adjustment; the adhesive force and the durability are enhanced through the synergistic effect of all the components in the composite agent; high-pressure atomization is combined with a calculation model to ensure uniform deposition of liquid medicine at the rhizome junction; the cloudy and rainy emergency mechanism dynamically responds to sudden weather, and the control continuity is maintained, so that the overall control effect, the resource utilization rate and the environmental adaptability are improved.

The invention discloses a flotation separation collecting agent for associated ultrafine particle apatite in vanadium titano-magnetite and a preparation method and a direct flotation process of the flotation separation collecting agent, and relates to the technical field of mineral separation. The flotation separation collecting agent comprises oxidized paraffin soap, salicylhydroxamic acid, soya bean lecithin and dodecyl sulfopropyl betaine. The preparation method comprises the following steps: independently dissolving the components, and sequentially mixing. The flotation separation collecting agent for the superfine apatite has the characteristic of synergistic interaction of multiple agents, the agent cost is low, the collecting capacity and the separation selectivity of the collecting agent for the superfine apatite are remarkably improved, the phosphorus resource recovery rate exceeds 80%, the loss of the phosphorus resource in tailings is effectively reduced, and the flotation separation collecting agent for the superfine apatite is suitable for industrial production. And efficient recycling of Panxi vanadium titano-magnetite associated phosphorus resources is achieved.

The invention discloses chewing gum based on composite stimulation as well as a preparation method and application of the chewing gum. Comprising the following raw material components in parts by weight: 0.09 to 0.105 part of 1, 8-cineole, 40 to 45 parts of gum base, 25 to 35 parts of D-mannitol, 8 to 15 parts of erythritol, 12 to 18 parts of purified water, 1 to 2 parts of caprylic / capric triglyceride, 0.3 to 0.8 part of soya bean lecithin, 0.2 to 0.4 part of Arabic gum and 0.05 to 0.1 part of carnauba wax. By organically combining composite stimulation with computerized task training, the limitation that a traditional nerve stimulation technology needs professionals and equipment is avoided, and work memory training is safe, effective and easy and convenient to operate. The device is especially suitable for daily training of people needing cognition improvement, such as people with high mental load and people with hypomnesis.

The invention provides a curcumin preparation and a preparation method thereof. The preparation method comprises the following steps: stirring and mixing whey protein and water; adding a NaOH solution into the system, and stirring and mixing; adding zein into the system, and continuously stirring; adding curcumin, propylene sulfide and soya bean lecithin into the system, stirring and mixing, and adjusting the pH value to 6.5; adding mannitol into the system, stirring until the mannitol is dissolved, and then performing vacuum freeze drying to obtain a dry sample; and mixing with auxiliary materials to obtain the curcumin preparation. The powdery curcumin preparation is prepared through a protein encapsulation method, soybean lecithin is added in the protein encapsulation process, the encapsulation efficiency can reach 92.35%, the particle size of effective components is smaller than 100 nm, particle size distribution is concentrated, the water solubility of curcumin is improved, and the bioavailability of curcumin is improved; a small amount of propylene sulfide is added in the curcumin encapsulation process, and it is found that due to addition of propylene sulfide, curcumin and propylene sulfide generate a synergistic effect, and the anti-inflammatory effect of the preparation is promoted.