6 results about "Sodium Hydroselenite" patented technology

This invention provides a nano-selenium, its preparation method, and its applications, relating to the field of nano-selenium fertilizer technology. Using sodium selenate or sodium selenite as raw material A and thiol-functionalized graphene as raw material B, raw material A and raw material B are mixed and reacted for a certain period to obtain nano-selenium, which can be used in fertilizers, food anti-oxidation and preservation, industrial catalysis, or chemical analysis. This invention uses inorganic selenium and thiol-functionalized graphene as raw materials. Through a simple solution mixing, reaction, and settling process, the in-situ reduction of selenite by thiol-functionalized graphene and the stable loading of nano-selenium are achieved, completing the conversion from inorganic selenium to nano-selenium in one step without the need for reducing agents.

This invention belongs to the technical field of functional personal care products, and specifically relates to a highly efficient and stable natural sulfur hot spring bath concentrate formula and its preparation process. The bath concentrate formula, by mass percentage, comprises the following components: 35.0-65.0% sulfur hot spring active concentrate, 0.001-0.01% sodium selenite, 0.1-1.0% sodium thiosulfate, 0.05-0.2% disodium EDTA, 0.5-3.0% cationic liposomes, 0.2-0.8% carrageenan, 0.5-3.0% calcium source, 0.3-2.0% magnesium source, 0.1-0.5% bisabolol, 0.1-0.5% dipotassium glycyrrhizate, 0.2-1.5% citrate-sodium citrate buffer pair, 3.0-8.0% polyol, 0.1-0.3% β-cyclodextrin-encapsulated fragrance, and deionized water to 100%. A liquid bath concentrate was obtained using natural sulfur hot spring water as the water source, which fully retains its active sulfide spectrum and characteristic mineral ions, and can be stored for a long time at normal temperature and pressure. It has the advantages of high stability, high polysulfide content, slow release, and no irritation.

The application discloses a preparation method of a lysozyme-nano selenium compound and application of the lysozyme-nano selenium compound in ROS removal. To mix sodium selenite solution and lysozyme uniformly, a lysozyme-sodium selenite solution is obtained, then vitamin C is added, and the mixture is uniformly mixed under the condition of light shielding and at room temperature, the pH value is adjusted to 6.5-7.5, a red solution is obtained, and dialysis is performed, so that the lysozyme-nano selenium compound is obtained. The lysozyme-nano selenium compound has the advantages of simple process, mild preparation condition, higher stability, biological safety, efficient ROS removal in egg white, and no influence on the regulation ability of the functional property, edible quality and other characteristics of the egg white, so that the deterioration problem of the egg white in the storage process is solved. The lysozyme-nano selenium compound has good application prospect in ROS removal, and can be applied to the fields of biomedical science and material science.

The application discloses a kind of stabilized hot spring sulfide active ingredients and its preparation method and application, belong to natural product processing and daily chemical technology field, including hot spring water or concentrated liquid rich in sulfide, sodium selenite, cationic polymer, hydrophobic silicone oil or natural oil, metal ion chelating agent, cyclodextrin inclusion zinc salt, natural aromatic oil and antioxidant.The application builds the dual stabilization and slow-release system of "electrostatic adsorption+physical barrier" by the in-situ synergistic effect of cationic polymer and oil, solves the contradiction between storage stability and service life.The final product of the application is extremely high in stability, has no bad smell, low irritability, and has smooth skin feel, completely overcomes the traditional obstacles of sulfur component in daily chemicals.

The application provides a precipitant for precipitating a silver base body, a preparation method and application, and the precipitant comprises potassium thiocyanate, an auxiliary complexing agent, trace rare earth elements, a synergist and trace selenium compounds; wherein the auxiliary complexing agent is at least one of pyrrolidone, N-ethyl-N-methyl aminoacetic acid or a combination thereof; the trace selenium compounds are sodium selenite or sodium selenate, the addition amount of the trace selenium compounds is 0.001%-0.05% of the total mass of the precipitant; and the mass ratio of the auxiliary complexing agent to the trace selenium compounds is 20:1-60:1. Through optimization of component allocation and auxiliary additives, rapid precipitation of silver elements is realized, and the application is suitable for various scenes such as element content analysis of silver alloy products and harmful element migration amount detection of silver tableware.

This invention discloses a highly stable inulin-selenium nanoparticle and its preparation method, belonging to the field of nanomaterials technology. The preparation method aims to address the problems of existing nano-selenium preparation methods, which rely on external chemical reducing agents, pose a risk of toxic residues, and have insufficient colloidal stability. Using natural inulin simultaneously as a reducing agent, stabilizer, and structure-directing agent, sodium selenite is reduced to nano-selenium particles in a one-step process under alkaline conditions and with the assistance of ultrasonic or magnetic stirring. The resulting solid powder is obtained after ethanol precipitation and freeze-drying. The product contains no external chemical reducing agents, exhibits excellent colloidal stability, and combines the prebiotic activity of inulin with the antioxidant function of nano-selenium, making it applicable to biomedicine, functional foods, and green agriculture.