8 results about "Colloidal silver" patented technology

The present invention relates to an advanced dressing characterized by a powder of polymeric material based on poly(lactic-co-glycolic) acid, functionalized with dextran, maltodextrin, collagen, citric acid, chitosan, polyphenols, colloidal silver, hyaluronic acid and / or salts thereof, polyethylene glycol and alginate. The present invention further relates to a process for producing the powder and the use of the powder in treating non-necrotic skin wounds.

This invention discloses a method for fabricating a SERS chip suitable for real-time detection in multiple scenarios, and the SERS chip itself. The method includes the following steps: Step S1, take an appropriate amount of colloidal silver solution and remove excess CTAB by centrifugation twice; Step S2, add a small amount of deionized water and sonicate to redisperse the solution; Step S3, take an appropriate amount of concentrated silver nanoparticle solution and drop it into the substrate groove; Step S4, after vacuum drying, the desired SERS chip is obtained. The SERS chip fabrication process of this invention is simple. The optimized drop casting method combined with a microgroove substrate design that resists the "coffee ring" effect enables uniform and dense deposition of nanoparticles. This process is easy to operate and has good reproducibility, laying a solid foundation for the large-scale and standardized production of high-performance SERS chips.

This disclosure provides methods of using an eco-friendly colloidal silver-based composition in preventing and reducing contamination caused by microorganisms in the plant tissue culture processes. The composition comprises colloidal silver, a copolymer, surfactant, a base, and water. The methods allow cultivating plants or explants in a plant tissue culture medium under non-aseptic conditions and thus obviate the need of the cumbersome and laborious procedures to sterilize the culture medium and the culture vessel in order to create aseptic conditions for plant or explant cultivation.

The invention provides a preparation method of a chargeable and dischargeable copper-plated titanium dioxide nanotube antifouling material. The preparation method comprises the following steps: preparing TNT by adopting an anodic oxidation method, activating the TNT by using a colloidal silver activating solution, and performing copper plating treatment on the TNT by adopting a method of reducing CuSO4 by using formaldehyde to obtain a copper-doped TNT nanotube. The material takes a titanium dioxide nanotube array as a substrate to load CuO or Cu2O, TNT-Cu is used for antifouling of phaeodactylum tricornutum for the first time, through the synergistic effect of a capacitance effect and controllable Cu < 2 + > slow release, the adhesion inhibition rate of the phaeodactylum tricornutum reaches 98.3 + / -0.87%, the death rate reaches 96.0 + / -2.0%, and efficient, lasting and environment-friendly antifouling of the phaeodactylum tricornutum is achieved.

The invention discloses a method for improving Raman spectrum signals in carbendazim and acetamiprid detection, and belongs to the technical field of pesticide residue detection. The specific method comprises the following steps: when the concentration of carbendazim and acetamiprid is detected by adopting a surface enhanced Raman spectrum technology, uniformly mixing a sample to be detected with colloidal silver nanoparticles, then adding an MgSO4 solution, and finally detecting a Raman spectrum signal. By adding the MgSO4 solution, the surface enhanced Raman spectrum signal of sample molecules is further enhanced, the method can realize simultaneous detection of the carbendazim and the acetamiprid, the detection limit of the carbendazim reaches 0.01 mu g / mL, the detection limit of the acetamiprid reaches 0.01 mu g / mL, the sensitivity is relatively high, and the method is suitable for large-scale popularization and application. And an effective detection means is provided for rapid detection of multiple scenes.

The invention relates to the technical field of veterinary drugs, and particularly discloses a colloidal silver and plant ear mite removing composite composition as well as a preparation method and application thereof. The composition is prepared from 0.1 wt%-0.5 wt% of colloidal silver, 0.1 wt%-0.5 wt% of 4-terpineol, 0.2 wt%-1 wt% of blumea oil, 10 wt%-30 wt% of a surfactant, 1.5 wt%-6 wt% of composite extracts (extracts of melia azedarach, geranium and hamamelis virginiana), 0.01 wt%-0.1 wt% of a complexing agent, 2 wt%-8 wt% of an organic solvent, deionized water and the like. Through synergism of all the components, the effects of resisting bacteria, killing mites, resisting inflammation and cleaning are achieved, and the problems of pet ear mite infection and ears are comprehensively solved. The invention also provides a preparation method of the composition, through step-by-step treatment, the activity of the components is ensured, and the stability and safety of the product are improved. The composition can be prepared into an ear mite removing product for pets, so that the ear health of the pets is effectively nursed.

The invention relates to a composition used as a medicine for preventing and / or treating inflammation. The composition at least comprises silver in colloid form, sambucus nigra extract, primula calyx extract and / or hyperforin perforatum extract and South African geranium extract. According to one embodiment, the composition is used for preventing and / or treating inflammation induced by Staphylococcus aureus.

The present invention relates to a bioactive scaffold comprising a silver-loaded antimicrobial composition, which acts as a therapeutic device, especially a scaffold, for wound healing and other applications related to the field of tissue engineering. The antimicrobial composition of the invention mainly comprises at least one absorbable matrix for cell-matrix and cell-cell interactions (a natural polymer), a calcium cross-linking component for forming a fibrin gel in situ, and a nanoemulsion containing colloidal silver nanoparticles as a bioactive compound to help control biofilm and infections in the wound. The structures comprising the antimicrobial composition act as dressings and means for aiding the healing of chronic wounds by assisting in infection management and / or improving the biological activity in chronic wounds.