188 results about "Sodium lactate" patented technology

The invention discloses ice glazing liquid for ice glazing of mussels. The ice glazing liquid is prepared from the following components in percentage by mass: 0.1 to 0.12 percent of sodium polyacrylate, 0.05 to 0.07 percent of sodium erythorbate, 0.01 to 0.03 percent of citric acid, 1 to 1.2 percent of sodium lactate, 0.4 to 0.6 percent of alginate oligosaccharide, 0.1 to 0.12 percent of xanthan gum, 7 to 9 percent of propylene glycol and the balance of water. The ice glaze liquid for ice glaze plating of the mussels is reasonable in compatibility, simple and easily available in components and good in adhesiveness, the formed ice glaze is not easy to crack, the dry loss rate can be reduced, and the quality of the thawed mussels can be ensured. The invention further provides a preparation method of the ice glaze liquid for ice glaze plating of the mussels. The preparation method is simple in process step, high in operability and uniform in component dispersion.

The invention discloses a concrete crack self-repairing material based on microorganism immobilization and a preparation method of the concrete crack self-repairing material, and belongs to the crossing field of microorganism materials and civil engineering. The material is prepared from peptone, sodium lactate, volcanic rock, bacillus pasteurii and other raw materials through the steps of culture medium preparation, carrier modification, microorganism immobilization, microcapsule and gel protection layer formation and the like, the prepared volcanic rock-chitosan carrier provides an inhabiting environment for microorganisms, and the survival rate of the microorganisms in a high-alkali environment is increased to 70%. When the concrete cracks and the alkaline environment triggers the protective layer to disintegrate, the bacillus pasteurii and the desulfurization vibrio are subjected to a reduction reaction with sulfate through urealysis, and calcium carbonate and calcium sulfide are generated to fill cracks. The 28-day repair rate of the material is larger than or equal to 99%, the maximum crack repair width reaches 1.2 mm, the compressive strength recovery rate is larger than or equal to 85%, excellent durability and environment friendliness are achieved, and the concrete crack repair problem is effectively solved.

The invention provides a new energy automobile battery flexible disassembling adhesive and a preparation method thereof, and belongs to the technical field of new energy automobile batteries, the flexible disassembling adhesive comprises the following components by weight: 45-50 parts of deionized water; 8 to 10 parts of gamma-butyrolactone; 5 to 8 parts of propylene glycol methyl ether acetate; 2 to 3 parts of microencapsulated lipase; 2 to 3 parts of nano cellulose immobilized protease; 6 to 8 parts of urea peroxide; 0.5 to 1 part of nano manganese dioxide; 0.7 to 1.1 parts of a sodium citrate / sodium lactate buffer solution; 1.5 to 2.5 parts of polyvinylpyrrolidone K30; 0.8 to 1.2 parts of hydroxypropyl methyl cellulose; 0.05 to 0.1 part of a graphene oxide nanosheet; 0.5 to 0.8 part of a benzotriazole derivative; 0.1 to 0.3 part of sodium molybdate; 6 to 8 parts of sorbitol; and 5-7 parts of ascorbic acid. The flexible disassembly adhesive solves the problems of low efficiency, serious environmental pollution, high safety risk and low material recovery rate in traditional battery disassembly.

The invention discloses a preparation method of high-viscosity cationic starch, which belongs to the technical field of modified starch, and comprises the following steps: crosslinking epichlorohydrin, ball-milling and cationizing; the epoxy chloropropane crosslinking comprises the following steps: mixing starch, calcium hydroxide and deionized water, stirring at 40-50 DEG C, adding sodium stearoyl lactylate, stirring at 50-55 DEG C, naturally cooling to room temperature, adding sodium chloride and epoxy chloropropane, stirring, dropwise adding a potassium hydroxide aqueous solution, stirring, adjusting the pH value to 6, filtering, taking filter residues, washing and drying to obtain crosslinked starch; in the step of ball milling, calcium hydroxide, sucrose fatty acid ester SE-11 and deionized water are mixed and then subjected to ball milling, and a ball-milled material is obtained; the prepared high-viscosity cationic starch is high in paste liquid viscosity and cationic substitution degree, good in paste liquid viscosity stability, uniform in substitution degree and paste liquid viscosity, high in reaction efficiency in cationization and low in alkali consumption.

The present disclosure provides a high-moisturizing cream and a preparation method therefor. Raw materials of the high-moisturizing cream comprise an emulsifier, an oil, a humectant, and a preservative. The humectant contains lactic acid and sodium lactate, and the humectant does not contain hyaluronic acid. The high-moisturizing cream provided by the present disclosure incorporates a composition of lactic acid and sodium lactate. Without the addition of hyaluronic acid, the high-moisturizing cream can effectively increase the water content of the stratum corneum of the skin and reduce the transepidermal water loss. Moreover, after the high-moisturizing cream provided by the present disclosure is prepared as either a W / O type or an O / W type, the moisturizing effect can be ensured.

The invention relates to the technical field of normal-temperature preservation of cooked meat products, in particular to a normal-temperature preservation method of cooked meat products based on natural components. The invention provides a method for improving the fresh-keeping degree of cooked meat products during normal-temperature storage, which comprises the following steps: applying a preset amount of compound preservative to the cooked meat products according to the expected fresh-keeping degree requirement, the compound preservative is prepared from epsilon-polylysine salt, nisin and sodium lactate. According to the method provided by the invention, the fresh-keeping degree of the cooked meat product can be comprehensively improved, so that the existing storage limitation is broken through while multiple requirements of consumers on safety, nutrition and flavor are met.

The invention provides a composition for improving the taste of grease in a beverage, a preparation method of the composition and the beverage, and the preparation method comprises the following steps: heating water, adding white granulated sugar, sodium caseinate and compound buffer salt, and dissolving to obtain a water phase; the preparation method comprises the following steps: heating 30wt%-70wt% of edible hydrogenated oil, adding sodium stearoyl lactylate and polyoxyethylene (20) sorbitan monostearate, and dissolving to obtain an oil phase; adding the residual edible hydrogenated oil and the oil phase into the water phase, and preserving heat to obtain a mixture; and homogenizing the mixture to obtain the composition. The invention provides an optimal production process to ensure the particle size distribution of the grease in the composition, so that the smoothness brought by the grease in different application scenarios of the beverage meets the taste requirement; an optimal emulsifier combination is provided, so that the shelf life and the product stability in cold, hot and acidic application scenes are realized; and the compound buffer salt is added, so that the greasy feeling caused by the addition of grease into the beverage is solved.

The invention discloses an ionic conductive gelatin hydrogel with high compression strength and a preparation method thereof. The preparation method of the ionic conductive gelatin hydrogel with high compression strength comprises the following steps: respectively preparing a gelatin solution and a montmorillonite dispersion liquid; adding sodium lactate into the gelatin solution, and heating and stirring to obtain a gelatin-sodium lactate mixed solution; adding the montmorillonite dispersion liquid into the gelatin-sodium lactate mixed solution, heating and stirring to obtain a precursor solution, and cooling to obtain the gelatin-sodium lactate-montmorillonite hydrogel. According to the preparation method provided by the invention, the defects of poor mechanical property, poor ionic conductivity and the like of the gelatin hydrogel can be improved, and then the gelatin hydrogel with high compression strength and ionic conductivity is prepared.

The invention relates to the technical field of feeds, in particular to a diatomite carrying agent enriched rice polysaccharide feed and a preparation method thereof. The raw materials comprise diatomite, rice, glutinous rice, flour, dry yeast, beer yeast, rhizopus sweet rice wine koji, raw rice flour, glutinous rice flour, brown sugar, soybean meal, saccharifying enzyme, sodium propionate, sodium lactate, astragalus membranaceus, liquorice, angelica sinensis, radix angelicae, clove, malt, momordica grosvenori, codonopsis pilosula and flaccid knotweed herb. The diatomite carrying agent enriched rice polysaccharide feed disclosed by the invention contains extremely rich polysaccharides, and is safe and nutritional; the preparation process of the feed is ecological and environment-friendly, can be fully copied, is easy to prepare, low in price and remarkable in economic benefit, meanwhile, the value of the rice is increased, and the feed has great strategic significance for maintaining food safety.

The invention discloses a composition for regulating scalp micro-ecology, which comprises a component A and a component B, the component A is prepared from the following components in parts by weight: 5 to 15 parts of amur corktree bark extract, 3 to 14 parts of rhizoma coptidis root extract, 5 to 15 parts of radix sophorae flavescentis extract, 2 to 8 parts of rhus chinensis insect gall extract, 2 to 18 parts of fructus cnidii extract, 3 to 10 parts of pericarpium zanthoxyli extract, 1 to 5 parts of camphor tree root extract, 3 to 12 parts of ginger root extract, 5 to 15 parts of radix polygoni multiflori extract and 5 to 25 parts of swertia japonica extract; 10-30 parts of a Chinese arborvitae twig and leaf extract; the component B is prepared from the following components in parts by weight: 70 to 90 parts of cocamidopropyl-PG-sodium dimethyl ammonium chloride phosphate, 10 to 30 parts of sodium isostearoyl lactylate and 1 to 10 parts of dichlorobenzyl alcohol; the weight ratio of the component A to the component B is 10: 1. The composition can effectively regulate scalp micro-ecological balance, remarkably inhibit overgrowth and reproduction of common harmful bacteria on scalp, protect or moderately promote growth of beneficial bacteria on scalp, maintain healthy flora structure and diversity, fundamentally improve scalp health by recovering and maintaining the balance state of scalp micro-ecology, and improve scalp quality. The shampoo has multiple good effects of controlling oil, preventing alopecia, relieving itching and removing dandruff.

The invention discloses a shower gel containing Chinese medicine components and a preparation method thereof. It is made of the following components in parts by weight: 5-15 parts of Chinese medicine extract, 3-6 parts of surfactant, 4-8 parts of conditioner, 3-5 parts of moisturizer, 3-5 parts of essence, 5-10 parts of thickener, and 100-200 parts of water. The shower gel of the present invention contains Chinese medicine extract components, which is less irritating and has good skin elasticity after bathing. The combined use of Buddleja buddleja extract and scutellaria baicalensis extract in the components improves the tightness of the skin after bathing; PEG-5 lauryl citrate sulfosuccinate disodium and sodium isostearyl lactylate are used in combination to enhance the decontamination performance of the shower gel; the combined use of ricinoleic acid amidopropyl trimethylammonium chloride and caprylhydroxamic acid improves the antipruritic effect of the shower gel, and synergistic synergism.

The invention belongs to the field of polymer chemistry and biological medicine materials, and relates to application of a polymer polysaccharide slow-release carrier in medicinal and edible components and a preparation method of the polymer polysaccharide slow-release carrier. The carrier is composed of phytic acid-genipin cross-linked modified chitosan, tannic acid, sodium lactate, glycerin, vitamin E acetate, sodium alginate and deionized water. The phytic acid-genipin cross-linked modified chitosan is prepared by reacting chitosan with phytic acid and genipin, and has reversible cross-linking and polydentate coordination properties; the tannic acid and the modified chitosan can form a multi-point hydrogen bond and esterification network. The carrier is prepared through sol-gel forming or spray drying, is stable in structure, good in dispersity, high in drug loading capacity, stable in an acid environment and controllable in release under a neutral condition, remarkably improves the slow release performance and bioavailability of medicinal and edible components, and is suitable for functional food and drug delivery systems.

The invention relates to the field of scale inhibitors, and discloses a biochemically degradable phosphorus-free and nitrogen-free scale inhibitor. Comprising the following raw materials in parts by weight: 25-35 parts of a chitosan grafted acrylic acid copolymer, 8-12 parts of polyaspartic acid, 8-12 parts of glucolactone, 7-13 parts of potassium citrate, 2-8 parts of propyl gallate, 9-11 parts of sodium lactate, 7-13 parts of polylysine, 3-7 parts of polycyclohexanedicarboxylic acid and 5-15 parts of water. According to the biodegradable scale inhibitor provided by the invention, the scale inhibition performance, the dispersing performance, the thermal stability and the anti-shearing performance are further improved, the service life is prolonged, and meanwhile, good biodegradability and environmental friendliness are kept.

The invention belongs to the technical field of cosmetics, and particularly discloses a hair follicle nourishing composition containing tripeptide-1 and a preparation method of the hair follicle nourishing composition. Comprising the following components in parts by mass: 36.5-47.3 parts of a Korean ginseng extract, 24-30 parts of a green alga extract, 20-28 parts of lactobacillus / soybean extract fermentation product filtrate, 1-5 parts of sodium polyglutamate, 1-4 parts of hydrogenated vegetable oil glyceride, 0.5-1.5 parts of sodium lactate and 0.2-1 part of tripeptide-1. On the basis that sodium polyglutamate, hydrogenated vegetable oil glycerides, sodium lactate and tripeptide-1 are added, through the synergistic interaction of the Korean ginseng extract, the green alga extract and the lactobacillus / soybean extract fermentation product filtrate, the composition capable of effectively inhibiting the activity of malassezia furfur, relieving or eliminating scalp inflammation, preventing and treating scalp inflammation and the like is obtained. Human hair papilla cell proliferation is promoted, and hair follicles are effectively nourished.

The invention discloses a method for immobilization and magnetic separation of arsenic in water by biomineralization, which comprises the following steps: S1, preparation of a liquid culture medium: dissolving a 60% (volume) sodium lactate solution, sodium nitrate, potassium dihydrogen phosphate, magnesium sulfate heptahydrate and a yeast extract in deionized water in proportion, adjusting the pH value of the culture medium solution to 6.9-7.0, sub-packaging and performing high-pressure sterilization; s2, inoculating a bacteria solution into the sterilized culture medium for amplification culture; s3, preparing a standard arsenic solution; s4, preparing ferric citrate and ferrous chloride solutions; s5, performing MSR-1 biological control mineralization synthesis of magnetosome; 6, MSR-1 induces ferrous iron to precipitate and remove arsenic; and S7, magnetically separating a bacterium-iron-arsenic mixture. The method realizes fixation and separation of As in water, not only retains the advantages of low cost and environmental friendliness of biomineralization polluted water remediation, but also overcomes the defects of low remediation efficiency and potential pollution caused by incapability of recycling.

The invention provides a dairy product and a preparation method thereof, and the dairy product contains 4-6% of protein based on the total weight of the dairy product. Based on 100 parts by weight of protein, the dairy product contains 2.5-34g of sterol ester; the dairy product also contains 1.25 to 6.0 g of phospholipid, 0.75 to 3.0 g of stearoyl lactate, preferably 1.25 to 2.5 g of stearic acid sodium lactate, and 2.5 to 3.0 g of mono / diglycerol fatty acid ester based on 100 parts by weight of protein. The dairy product disclosed by the invention is simple in formula composition, does not contain colloid, is clean in label, and can be stored at normal temperature for more than 6 months; meanwhile, the health effects of lowering cholesterol and the like are achieved.

The invention belongs to the technical field of biochemistry and functional polymer materials, and particularly relates to a polysaccharide-oligopeptide co-assembled intestinal flora regulation and control material and a preparation method thereof. The material is prepared from imine-boric acid ester double dynamic crosslinking modified chitosan, glycyl-tryptophan dipeptide, sodium lactate, citric acid, glycerol and a phosphate buffer solution. A reversible imine bond and a borate bond are introduced into chitosan molecules to construct a polysaccharide network with a double-dynamic crosslinking characteristic, and then the polysaccharide network and oligopeptide molecules are synergistically self-assembled to form a three-dimensional gel structure. The material has pH responsiveness, self-repairing property and slow-release function, and can realize continuous release of short peptides and selective regulation and control of probiotics in an intestinal environment. The prepared material is high in gel strength, good in structural stability and stable in oligopeptide release, and has remarkable promotion and inhibition selectivity on intestinal flora. The method provides an innovative co-assembly strategy for polysaccharide functionalization and micro-ecological intervention, and has a good application prospect.

The invention relates to the field of bactericides, and particularly discloses a microbial bactericide and a preparation method thereof. The microbial bactericide is prepared from the following raw material components: 40 to 45 parts of microbial source fermentation liquor; 50 to 60 parts of a carrier; 2-3 parts of a dispersing aid; 3-5 parts of a surfactant; 0.5 to 1 part of a synergist; microbial sources in the microbial source fermentation liquor comprise bacillus, trichoderma harzianum, trichoderma viride and pythium oligandrum according to the weight ratio of 50: (20-25): (10-15): 10, and the carrier comprises at least two of sodium lactate, calcium sulfate and manganese sulfate; the preparation method comprises the following steps: I, activating and culturing a microbial source; iI, preparing microbial source fermentation liquor; and III, preparing the microbial bactericide. The composition disclosed by the invention has high bactericidal ability, high stability and long-acting bactericidal ability, the prevention and treatment effect can be not lower than 71.5%, and the suspension rate is not lower than 97.85%.

The invention belongs to the field of agriculture, and particularly relates to a wild vegetable natural composite preservative and a preparation method thereof, the wild vegetable natural composite preservative is prepared from the following raw materials by weight: 0.6-0.9 part of a mixed flavone extract, 1-2 parts of L-malic acid, 2-3 parts of sodium lactate, 10-20 parts of a glucose solution, and 20-30 parts of glycerin. The natural composite preservative is prepared by adopting a method for extracting flavone from plants, and the prepared product is healthy and safe to use and has excellent preservative and fresh-keeping effects. L-malic acid is used as a pH regulator, so that the pH value of the preservative can be maintained in a proper range, the growth of microorganisms and the activity of enzymes are inhibited, and the preservation effect is further improved.

The invention discloses a cell protection solution for venous transfusion as well as a preparation method and application of the cell protection solution. The cell protection liquid comprises 4 to 8 mg / ml of sodium chloride, 0.1 to 0.5 mg / ml of potassium chloride, 2.8 to 3.5 mg / ml of sodium lactate, 0.1 to 0.3 mg / ml of calcium chloride, 0.15 to 0.3 [mu] g / ml of glucose, 0.01 to 0.03 ml / ml of 20% human serum albumin, 4 to 8 [mu] g / ml of vitamin E, 0.2 to 2 [mu] g / ml of vitamin B12, 0.5 to 2 [mu] g / ml of folic acid, 4 to 8 [mu] g / ml of L-aspartic acid and 0.5 to 2 [mu] g / ml of glutathione. The cell preserving fluid provided by the invention can effectively protect cells for a long time, can be directly transfused back through veins, does not need special treatment, is convenient for clinical application, and has better application prospect and development potential in the development of the clinical treatment of the cells towards the drug direction.

The invention belongs to the field of pharmaceutical preparations, and provides a medical composition for treating premature delivery and a preparation method thereof. The progesterone nanocrystal (D50 is 250-350 nm) and poloxamer 407 / 188 thermosensitive gel-forming system composite design is adopted, hydroxypropyl methylcellulose or carbomer 974P and a functional adhesion polymer (carbomer-cysteine or carbomer-catechol) are matched, the pH is adjusted to 4.0-4.5 through a lactic acid / sodium lactate buffer system, and the progesterone nanocrystal / poloxamer composite gel-forming agent is prepared. The excellent performance that the sol-gel transition temperature is 30-34 DEG C, the elastic modulus is not smaller than 150 Pa at 37 DEG C, the modulus retention rate is not smaller than 60% after the emulsion is diluted by 5-10 times, the adhesion work is not smaller than 0.60 N.s, and the anti-flushing retention rate is not smaller than 70% after the emulsion is diluted by 5-10 times is achieved. The invention solves the problem of synergy of high-modulus gel strength, rapid self-repairing ability and anti-dilution and anti-flushing stability, realizes unification of long-acting drug release and excellent biological adhesion performance in vagina physiological fluid dilution and mechanical flushing environments, and has wide clinical application value.

To provide a cosmetic composition which exhibits an improvement effect for the texture of hair and scalp.SOLUTION: There is provided a cosmetic composition which comprises tartaric acid, glycine, sodium citrate, alanine, disodium succinate and sodium sulfate, wherein the amount of tartaric acid is 57.07 mass% based on the total mass of the composition, the amount of glycine is 13.42 mass% based on the total mass of the composition, the amount of sodium citrate is 10.41 mass% based on the total mass of the composition, the amount of alanine is 7.61 mass% based on the total mass of the composition, the amount of disodium succinate is 7.48 mass% based on the total mass of the composition, the amount of sodium sulfate is 4.01 mass% based on the total mass of the composition. There is obtained a cosmetic by incorporating one or more selected from histidine, proline, isoleucine, serine, valine, aspartic acid, threonine, phenylalanine, arginine, PCA, PCA-Na, sodium lactate and water into the cosmetic composition.SELECTED DRAWING: Figure 1

This invention provides an injectable cefminox sodium preparation and its preparation method, belonging to the field of pharmaceutical preparation technology. The preparation, by weight, comprises: 1 part of refined cefminox sodium, 0.5 parts of sodium lactate Ringer's solution, 0.2 parts of vitamin B12 injection, 0.1-0.3 parts of a modified composite antioxidant, and 3 parts of physiological saline. The preparation method of the modified composite antioxidant is as follows: S1, add 1 part by weight of poloxamer to 20 parts by weight of distilled water and stir for 6-8 minutes to obtain a solution; S2, after passing 1 part by weight of natural vitamin C through a 100-mesh sieve, mix it into the solution obtained in S1, and sonicate for 10-15 minutes to obtain a vitamin C solution; S3, mix 0.5 parts by weight of vitamin D into the vitamin C solution obtained in S2, and sonicate for 15-20 minutes to obtain the modified composite antioxidant. The formulation of this invention exhibits excellent stability and stable content of cefminox sodium when exposed to environments of 35℃±2℃, 65%±5%RH and natural light, ensuring the safety and reliability of medication.

The invention provides non-hydrogenated normal-temperature non-dairy milk and a preparation method thereof, and relates to the technical field of food processing. The stable system of the non-hydrogenated normal-temperature non-dairy milk is obtained through long-term research, and the stable system of the non-hydrogenated normal-temperature non-dairy milk takes 10-40% of non-hydrogenated vegetable oil as a base material, and is compounded with white granulated sugar, milk powder and monoglyceride according to a specific proportion. The cleaning agent is prepared from diglycerol fatty acid ester, diacetyl tartaric acid ester of mono (di) glycerides, sodium stearyl lactate, sodium caseinate, succinic acid ester of mono (di) glycerides, sucrose fatty acid ester, carrageenan, gellan gum, disodium hydrogen phosphate, sodium hexametaphosphate and deionized water. Experiments prove that the non-hydrogenated normal-temperature non-dairy milk adopting the stable system disclosed by the invention not only has better stability when being stored at room temperature for a long time, but also can keep better mouth feel. Therefore, the non-hydrogenated normal-temperature non-dairy cream provided by the invention effectively relieves the problem of harsh storage conditions of the existing plant cream, realizes normal-temperature storage, and reduces the storage and transportation cost.

The application relates to a preparation method and application method of a mesenchymal stem cell protective agent composition, and relates to the technical field of stem cell treatment, in particular to a protective agent composition, a preparation technology of the protective agent composition and an application technology of the protective agent composition in mesenchymal stem cell treatment. The application solves the problems of insufficient cell stemness maintenance, complex formula or cell toxicity in the existing mesenchymal stem cell cryopreservation. The protective agent composition prepared by the preparation method comprises a deferoxamine pretreatment protective agent and a sodium lactate Ringer injection storage solution. The application method inhibits low-temperature-induced ferroptosis through DFO pretreatment, so that the mesenchymal stem cells can still maintain the multi-directional differentiation potential, the immunoregulatory function and the proliferation ability after being treated at 4 DEG C for 24-48 hours, the serum or complex nutritional ingredients do not need to be added, and the protective agent composition has the advantages of clear composition, high safety, simple operation and the like. The application is suitable for the fields of stem cell treatment, regenerative medicine, pet medical treatment and the like.

A kit for in-vitro extraction of cell mitochondria and a method. The kit comprises an extraction liquid A, an extraction liquid B, an extraction liquid C and a preservation liquid, the extraction liquid A comprising EDTA, sodium lactate and sodium chloride, the extraction liquid B being a heparin solution, the extraction liquid C comprising mannitol, EDTA, sodium lactate and sodium chloride, and the preservation liquid comprising mannitol, EDTA, sodium lactate, succinic acid, sodium pyruvate and sodium chloride. Using the extraction liquids and the preservation liquid can better maintain the functions of mitochondria in vitro, thus prolonging the time span from extracting mitochondria to applying same to the bodies of patients, and helping to clinical application of mitochondrial transplantation.

The invention provides a sour soup dumpling compound preservative as well as a preparation method and application thereof, and relates to the technical field of food storage. The compound preservative for the dumplings in the sour soup is prepared from the following raw materials in parts by weight: 2.5 to 3.5 parts of D-sodium erythorbate, 0.5 to 1.5 parts of phospholipid and 0.3 to 0.5 part of sodium lactate. The prepared preservative can better delay oxidation of meat stuffing of the red sour soup dumplings, maintain the flavor of the red sour soup, delay quality deterioration of the red sour soup dumplings and improve the storage stability.

The invention relates to a method for improving PD-1 titer produced by Chinese hamster ovary cells. The method comprises the following steps: inoculating the Chinese hamster ovary cells into an initial culture medium for culturing; after the culture is performed for 48 hours, feeding a fed-batch culture medium every day, and maintaining the glucose concentration in the culture medium to be 1.3-1.7 g / L, the galactose concentration to be 0.6-1.0 g / L and the L-sodium lactate concentration to be 14-16 mM; the culture temperature is reduced, a fed-batch culture medium is fed every day, the glucose concentration in the culture medium is maintained at (2-2.8) g / L, the galactose concentration is maintained at (1.7-2.2) g / L, and cells are harvested. Galactose is introduced to serve as a second carbon source, and control over the culture initial metabolism environment and the carbon source in the culture stage is combined, so that the maximum accumulation amount of lactic acid is obviously reduced, the cell culture period is remarkably prolonged, and the maximum titer of the PD-1 antibody is remarkably improved compared with an existing process.

To provide a method for promoting the biosynthesis of a polyphenol that can promote biosynthesis of a polyphenol in a site in a plant capable of biosynthesizing a polyphenol without supplying a plasma irradiation aqueous solution to soil in which the plant is grown.SOLUTION: A method for promoting the biosynthesis of a polyphenol comprises a step for performing such a treatment that a plasma irradiation aqueous solution obtained by irradiating an aqueous solution containing sodium L-lactate with atmospheric plasma is applied to a site in a plant having a site capable of biosynthesizing a polyphenol. The method for promoting the biosynthesis of a polyphenol can increase the amount of the polyphenol accumulated in the site. The treatment is preferably performed by injecting or applying the plasma irradiation aqueous solution into or to the site.SELECTED DRAWING: Figure 1

The application relates to the technical field of ceramicizing agents, in particular to a nano ceramicizing agent and a preparation method thereof. The nano ceramicizing agent is prepared from the following raw materials in parts by weight: 0.5-4 parts of a silane coupling agent, 0.4-4 parts of a titanate coupling agent, 1-10 parts of a zirconium salt, 3-5 parts of an alcohol solvent, 0.5-2 parts of nitric acid or a nitrate, 0.2-2 parts of modified nano clay, 0.01-0.03 parts of sodium hexametaphosphate, 1-5 parts of hydrogen peroxide, 0.1-0.5 parts of sodium lactate, and 60-80 parts of deionized water or tap water. The silane coupling agent and the titanate coupling agent are used as the basis of the ceramicizing agent, a protective film with good protection performance is formed on the metal surface, the zirconium salt chemically reacts with the metal base layer, so that a dense electrochemical protection passivation layer is formed on the metal surface, the adhesion of the film layer is improved, the use of fluorides is reduced through the addition of the modified nano clay, and the environmental protection performance of the product is further improved.