12 results about "Selenious Acid" patented technology

The application discloses a cultivation method for improving selenium content of Auricularia auricula, and comprises a cultivation material for improving selenium content of Auricularia auricula, wherein the cultivation material is obtained by mixing a slow-release sodium chlorate composite material and a slow-release selenium-containing mineral material with carbon nutrition, nitrogen nutrition and mineral nutrition respectively. In the application, the sodium chlorate and selenium are respectively prepared into specific slow-release systems, and the slow-release reaction in the cultivation material generates selenite which is easy to be absorbed and utilized by Auricularia auricula, so that the selenite concentration in the cultivation material is regulated, the growth of Auricularia auricula is promoted, the yield of Auricularia auricula is improved, the quality of Auricularia auricula is significantly improved, the selenium content and the amino acid content of Auricularia auricula are both significantly increased, and the cultivation material can be used for seedling cultivation of Auricularia auricula with high selenium content, so as to obtain high-quality seedlings of Auricularia auricula with high selenium content.

This invention discloses a method for preparing selenized Ophiopogon japonicus polysaccharide, its structural characterization, and its applications. The preparation method includes: dissolving Ophiopogon japonicus polysaccharide in dilute nitric acid, adding sodium selenite, reacting at 50–90°C for 4–12 hours, adjusting the pH to neutral, and obtaining selenized Ophiopogon japonicus polysaccharide after dialysis, concentration, and freeze-drying. Structural characterization was performed using ultraviolet spectroscopy, infrared spectroscopy, and scanning electron microscopy, showing that selenium was successfully linked to the polysaccharide molecule in the form of selenite ester. Multiple cell experiments showed that: CCK-8 assay results indicated that the polysaccharide had no significant toxicity to RAW264.7 cells in the concentration range of 25–100 μg / mL; Griess assay and ELISA results showed that the polysaccharide significantly inhibited LPS-induced release of NO, TNF-α, and IL-6 from macrophages in a concentration-dependent manner; GC-MS analysis of the metabolite lactate revealed its anti-inflammatory mechanism at the metabolic level. Animal experiments showed that the selenized Ophiopogon japonicus polysaccharide significantly reduced the inflammatory response in a mouse skin burn model and promoted wound healing. The process of this invention is simple and the conditions are mild. The selenized Ophiopogon japonicus polysaccharide prepared has good anti-inflammatory activity and can be used to prepare drugs for treating skin burns and inflammation.

The invention discloses mucoprotein nano-selenium gas motor hydrogel as well as a preparation method and application thereof, and relates to the technical field of biological medicines. The preparation method of the mucoprotein nano-selenium gas motor hydrogel comprises the following steps: adding a carbonyl compound and selenite into an emulsifier solution, and adding a reducing agent for mixing reaction to obtain a nano-selenium gas motor, oxidized mucoprotein and the nano-selenium gas motor are mixed, then a cross-linking agent is added, the oxidized mucoprotein is subjected to a cross-linking reaction to form gel, and the mucoprotein nano-selenium gas motor hydrogel is obtained. The mucoprotein nano-selenium gas motor hydrogel is constructed by wrapping a gas motor into a mucoprotein hydrogel delivery system, the mucoprotein nano-selenium gas motor hydrogel can be specifically delivered to a colitis disease part through rectal administration, and meanwhile, the safe and controllable release and mucous membrane protection effects of the nano-selenium gas motor are realized; therefore, a new thought is provided for treating enteritis.

The invention relates to the technical field of microbiology and selenium polluted environment restoration, and provides an ensifer morelensis R2-120 strain and an application thereof. The bacterial strain R2-120 is ensifer morelensis capable of efficiently synthesizing volatile selenium, and the preservation number of the bacterial strain R2-120 is GDMCC No: 63730. The strain R2-120 has relatively strong tolerance to selenate and selenite, and a plate test shows that the R2-120 can tolerate at least 200 mM of selenate and 60 mM of selenite. The strain R2-120 can metabolize selenite and convert the selenite into nano-selenium, and can convert the selenite and the nano-selenium into volatile selenium. The invention also establishes a method for removing selenium in the water body by using R2-120 in the bioreactor, and the method can be used for bioremediation of selenium-polluted water body and soil, treatment of selenium-containing wastewater and recycling of selenium, and has a wide application prospect.

The present application relates to a kind of electrolytic manganese plate pre-electrolysis-pole replacement collaborative treatment process, after stripping manganese washing, cathode plate is sent into pre-electrolysis tank pre-electrolysis;Pre-electrolysis tank is equipped with pre-electrolyte, when pre-electrolysis, the concentration of selenious acid ion in pre-electrolyte, the concentration of selenious acid ion, the electrolytic temperature of pre-electrolyte, the pH of pre-electrolyte, manganese ion concentration;After processing, cathode plate is removed from pre-electrolysis tank, and is sent to main electrolysis tank and is electrolytic deposition, main electrolysis tank is equipped with main electrolyte, and when electrolytic deposition, the electrolytic temperature of main electrolyte, manganese ion concentration, pH is controlled, and is repeatedly.The present application also discloses a kind of electrolytic manganese plate pre-electrolysis-pole replacement collaborative treatment process with electrolytic manganese production system.In the present application, the "manual adjustment warehouse" link in main tank can be completely cancelled, the edge effect of pole plate and the uneven current density caused by frequent current rise and fall are avoided, and the risk of burst plate caused thereby is fundamentally eliminated.

The invention discloses soil sporosarcina CH23 as well as a method for synthesizing nano-selenium by using the soil sporosarcina CH23 and application of the soil sporosarcina CH23. The nano-selenium synthetic bacterium is sporosarcina soli CH23, is preserved in the Guangdong Microbial Culture Collection Center (GDMCC), and has the preservation number of GDMCC No.67015. The invention further discloses a preparation method of the nano-selenium synthetic bacterium. The soil sporosarcina CH23 can be used for efficiently converting high-toxicity selenite into non-toxic nano-selenium. The required culture conditions are simple, the cost is low, and the operation is easy. The produced nano-selenium particles have the advantages of being non-toxic, high in biological activity, stable in property, almost free of other selenium by-products and the like, have the effects of resisting bacteria, resisting oxidation, resisting cancers and the like in the field of medicines, can also be used as a nano-selenium fertilizer for plant selenium nutrition supplement, and have the advantages of being more efficient, safer and more environmentally friendly compared with a traditional selenite selenium fertilizer.

The invention relates to the technical field of microbiology and biological nano-selenium preparation, and provides a sphingomyza sp. R3-92 strain and application of the sphingomyza sp. R3-92 strain. The strain R3-92 is a new strain of sphingomyza sp capable of efficiently converting selenite into nano-selenium, the new strain is planned to be named as selenium reduction sphingomyza sp, and the preservation number of the new strain is GDMCC No: 63729. The strain R3-92 is a new strain of sphingomyza sp, is planned to be named as selenium reduction sphingomyza sp, and is named as selenium reduction sphingomyza sp. The strain R3-92 has relatively strong tolerance to selenate and selenite, and a plate culture test shows that the R3-92 can tolerate 100 mM of selenate and 80 mM of selenite. The invention also establishes a method for preparing a large amount of nano-selenium by using R3-92 in a bioreactor, and the method has obvious application effects in fertilizer, feed, selenium-rich functional food processing, health care products and medical products.

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.

The invention discloses a plant organic selenium supplement and a preparation method and application thereof, and belongs to the technical field of selenium-rich agricultural product planting. The plant organic selenium supplement is prepared by the following steps: heating seleninic acid and honey in an aqueous solution to react for 0.5-2 hours, adding an alkali solution to adjust the pH value to be neutral, and adding purified water to dilute. The plant organic selenium supplement is dissolved in water for dilution, uniformly stirred and sprayed on the rape after 2 months, so that the selenium content in the rape moss can reach more than 200mu g / kg, and the harm caused by inorganic selenium residue can be avoided. The method has practical significance for promoting the development of selenium-rich agricultural products.

The application discloses soil sporosarcina CH23 and a method and application of synthesizing nano selenium by using the soil sporosarcina. Sporosarcina soli The nano selenium synthesis bacteria are soil sporosarcina (Sporosarcina siccitae) CH23, which are preserved in a Guangdong Microbial Culture Collection Center (GDMCC) and have a preservation number of GDMCC No. 67015. The soil sporosarcina CH23 can efficiently convert high-toxicity selenite into non-toxic nano selenium. The required culture condition is simple, low in cost and easy to operate. The produced nano selenium particles have the advantages of non-toxicity, high biological activity, stable property and almost no other selenium byproducts, and have the effects of antibiosis, antioxidation and anticancer in the medical field. In addition, the nano selenium can be used as a nano selenium fertilizer for plant selenium nutrition supplement, and has the advantages of higher efficiency, safety and environmental protection compared with traditional selenite selenium fertilizer.

The invention discloses a method for synthesizing nano-selenium by high-density fermentation of saccharomyces cerevisiae boulardii, a selenium-enriched yeast product prepared by the method and application of the nano-selenium in tomato cultivation. The fermentation comprises three-stage seed propagation (at 30-32 DEG C, 250-300 rpm, and inoculation amount of 5-10%), inoculation (dissolved oxygen is greater than or equal to 30%), supplementary feeding (residual sugar is 2-5 g / L), selenite induction (1-3 mM until the fermentation broth is brick red) and final-stage temperature and pH regulation, and the selenium-enriched yeast with the cell dry weight of 150-300 g / L and the dry basis organic selenium of 6900-7500 mu g / g is obtained. During application, tomato is sprayed for the first time in 45 days after transplanting and is sprayed for three times (accumulated spraying liquid is 3.2-3.6 L / group) in 14 days, the optimal dosage is 10mg / L, the TA liter of tomatoes is more than or equal to 80%, the dry weight liter is more than or equal to 8%, the sugar-acid ratio is 3.8-4.5, and the selenium content of fruits exceeds that of a control group by 85% and is superior to that of sodium selenite; the dosage of 20mg / L is easy to generate growth inhibition, and the dosage is not used as a recommended application concentration; the method is safe and efficient, and is suitable for industrialization and agricultural popularization.

The invention relates to the technical field of fertilizers, in particular to selenium-doped diatom biochar, a nano-selenium fertilizer and a preparation method and application of the selenium-doped diatom biochar and the nano-selenium fertilizer, selenium in the selenium-doped diatom biochar exists in the form of nano-selenium, the size of the nano-selenium is about 100-150 nm, the content of the nano-selenium is not lower than 15 micrograms per 100 grams, and the content of the nano-selenium is not lower than 10 micrograms per 100 grams. According to the structure, nano-selenium dots are embedded in the surface and the interior of biochar. The diatom is used for reducing nano-selenium, the method is not limited to existing high-reducing-property bacteria for reducing selenite, and the method has higher universality and economical efficiency.