9 results about "Sodium dehydroacetate" patented technology

The invention relates to the technical field of biology, in particular to a virus preservative based on sodium dehydroacetate and a preparation method and application of the virus preservative. The virus preservative based on sodium dehydroacetate is prepared from the following components in percentage by weight: 1% of sodium dehydroacetate, 1% of potassium sorbate, 0.4% of trehalose, 0.008% of thiomersalate sodium salt and the balance of deionized water. By adopting the liquid preservative, the production standard of the virus preparation is reduced, and the production cost and the technical complexity are reduced; through suitability comparison, it is found that the preservative does not affect the activity of the virus strain, and the virus titer is not reduced after 100 h. Compared with a single preservative, the preservative disclosed by the invention has the advantages that the bacteriostatic ability is stronger, microorganisms in the preparation are obviously inhibited under the room temperature condition, and the detected microbial biomass is the lowest in each group, so that the preservative disclosed by the invention has a good continuous preservative effect on viruses, and the activity of the viruses can be maintained for a longer time.

The invention discloses toy mud. The toy mud is prepared from the following components in parts by mass: 2 to 6 parts of hydroxyl guar gum, 0.5 to 2 parts of guar gum, 0.2 to 0.8 part of sodium lauryl sulfate, 0.2 to 0.8 part of phenoxyethanol, 0.2 to 0.6 part of potassium sorbate, 0.04 to 0.12 part of sodium dehydroacetate, 1 to 3 parts of silicon dioxide, 0.1 to 0.5 part of titanium dioxide, 7 to 10 parts of glycerol and 80 to 90 parts of ionized water. Compared with an existing toy mud product, the toy mud has the advantages that the hydroxyl guar gum and the guar gum are compounded for thickening, and borax crosslinking is not needed, so that the safety of the toy mud is improved; phenoxyethanol, potassium sorbate and sodium dehydroacetate are adopted for synergic preservation, and compared with a single preservative system, the shelf life of the product can be effectively prolonged; meanwhile, by doping silicon dioxide and sodium lauryl sulfate, the viscosity can be effectively reduced, and the elasticity is improved, so that the use and playing experience is improved; in addition, the working range of the toy mud can be effectively expanded by compounding the modified guar gum with the glycerol, so that the toy mud can be normally used in various temperature environments.

The utility model discloses a sodium dehydroacetate mother liquor recovery device which comprises a recovery box, a storage groove is formed in the bottom of the interior of the recovery box, a C-shaped table is arranged on the top of one side of the interior of the recovery box, a motor is arranged in the middle of the top of the recovery box, and a rotating rod is arranged at the output end of the motor. A rotary table is arranged at the top of the outer side of the rotary rod, and an annular filter screen is arranged at the bottom of the outer side of the rotary table; through mutual cooperation of the annular filter screen, the C-shaped table, the motor, the gear A, the gear B, the transmission assembly, the sleeve rod, the scraping rod and the transmission rod, when the device filters the sodium dehydroacetate mother liquor, the mother liquor can be filtered by continuously rotating the annular filter screen, filtered impurities can be continuously conveyed to the other side, and meanwhile, the annular filter screen is controlled to rotate, so that the impurities can be continuously conveyed to the other side. When the mother liquor is filtered, the scraping rod can be driven to rotate in the opposite direction, so that filtered crystals can be swept away, continuous filtration of the mother liquor is realized, and the recovery efficiency of the mother liquor is improved.

The application discloses a kind of peroxidase / laccase-like nanoscale enzyme colorimetric / fluorescence dual-mode rapid detection sodium dehydroacetate method, the method with 1-hydroxybenzotriazole (HOBT) as organic ligand, select Cu and Zn two transition metals as central ion, Cu / Zn-MOF material is synthesized.The linear range of colorimetric mode is 0.067-12 μg / mL, and the detection limit is 0.020 μg / mL;The linear range of fluorescence mode is 0.01-22 μg / mL, and the detection limit is 0.041 μg / mL, the sensor is applied to the recovery experiment of DHA in food sample, the recovery rate is between 92.1%~106.4%, and RSD is not more than 5%, verify that the analysis method has good stability, reliability and reproducibility.

The invention belongs to the technical field of corrosion prevention and mildew removal of cigar leaves, and particularly relates to a mildew-proof solvent for cigar tobacco leaves and a fermentation mildew prevention method. The invention relates to a mildew-proof solvent for cigar tobacco leaves. The mildew-proof solvent comprises an aqueous solution; sodium dehydroacetate and / or linalool; wherein the mildew-proof solvent is used for being sprayed on the surfaces of cigar tobacco leaves; sodium dehydroacetate and linalool have a strong inhibition effect on mould, and can quickly block spore germination and hypha expansion in the early stage of mildew of tobacco leaves and reduce the formation of mildew spots; the chemical stability is high, the activity can still be kept under the conditions of high temperature and high humidity of fermentation, and the method is suitable for a long-period fermentation process; spoilage mould can be inhibited without significantly influencing the growth of dominant flora, and the synthesis of aromatic substances is prevented from being blocked.

The invention discloses a peroxidase-like / laccase nano-enzyme colorimetric / fluorescent dual-mode rapid sodium dehydroacetate detection method, which comprises the following steps: synthesizing a Cu / Zn-MOF material by taking 1-hydroxybenzotriazole (HOBT) as an organic ligand and selecting two transition metals Cu and Zn as central ions; the linear range of the colorimetric mode is 0.067-12 [mu] g / mL, and the detection limit is 0.020 [mu] g / mL; the linear range of a fluorescence mode is 0.01-22 [mu] g / mL, the detection limit is 0.041 [mu] g / mL, the sensor is applied to a standard recovery experiment of DHA in a food sample, the recovery rate is 92.1-106.4%, the RSD does not exceed 5%, and it is verified that the analysis method has good stability, reliability and reproducibility.

The invention belongs to the technical field of oil and gas field fracturing fluid gel breaking, and relates to a gel breaking activator, a fracturing fluid containing the gel breaking activator, and a preparation method and application of the gel breaking activator. The gel breaking activating agent is prepared from the following components in percentage by mass: 3.3 percent to 7.13 percent of triethanolamine, 6.7 percent to 8.58 percent of D-sodium erythorbate, 3.3 percent to 7.13 percent of tea polyphenol, 6.7 percent to 8.58 percent of sodium dehydroacetate, 8.58 percent to 20 percent of ethylene glycol and the balance of water. The invention also discloses a preparation method of the gel breaking activator, the raw materials are physically blended, the preparation process is simple, and the gel breaking activator can be prepared on site and is convenient to use. The invention further discloses fracturing fluid containing the gel breaking activator and application, the dosage of the gel breaking activator is small and only needs 1%-3%, and the gel breaking performance at the temperature of 20-50 DEG C is good. The problem that gel breaking of fracturing fluid is difficult when the formation temperature is lower than 50 DEG C can be solved.

The invention belongs to the technical field of plant protection, and particularly relates to a natural enemy insect colonic fertilizer chisodochidae granular artificial feed which comprises the following components: 150-180 parts of cereal powder, 15-20 parts of insect powder, 15-18 parts of yeast, 5-8 parts of agar, 4-6 parts of yolk, 2-5 parts of gelatin and 2-3 parts of fish meal. The feed additive is prepared from the following raw materials in parts by weight: 1-2 parts of ascorbic acid, 0.4-0.6 part of hydrochloric acid, 0.4-0.6 part of sodium dehydroacetate, 0.8-1.2 parts of riboflavin, 0.8-1.2 parts of folic acid, 0.8-1.2 parts of multivitamins, 1-3 parts of sorbic acid and 1-3 parts of benzoic acid. Various raw materials are added into the feed, so that the comprehensiveness of nutrients required by the photosynthetic fertilizer chisodochidae is ensured, the limitation of the conventional water-containing feed is broken through, and the feed is long in shelf life, resistant to storage and transportation and easy to package. The photosynthetic fertilizer chelisodochidae artificially fed by the feed disclosed by the invention has strong predation capability on noctuid pests such as spodoptera frugiperda and cotton bollworm and root maggot pests, and can be used as a natural enemy insect to prevent and control the pests.

The invention discloses an oral medicine containing sodium dehydroacetate, which is used for treating helicobacter pylori infection. In order to solve the problems of antibiotic resistance and gastrointestinal tract microecological disorder caused by the existing quadruple therapy, free molecules of the medicine disclosed by the invention under the gastric acid condition have strong lipophilicity, can efficiently penetrate through a gastric mucous layer and bacterial cell membranes, and can cause bacterial energy depletion death by blocking tricarboxylic acid cycle and energy metabolic centers such as succinate dehydrogenase. Animal experiments prove that the curative effect of reducing Hp colonization is equivalent to or even better than that of quadruple therapy. As a non-antibiotic bacteriostatic agent, the product has the advantages that drug resistance is not easy to generate due to multi-target action, normal intestinal flora is not damaged, flora imbalance and secondary infection are effectively avoided, and the safety is obviously improved.