89 results about "Sorbic acid" patented technology

The invention discloses an amphiphilic chitosan and plant nanocellulose composite coating fresh-keeping material, which is prepared from the following ingredients in percentage by mass: 0.5 to 20 percent of amphiphilic chitosan, 0.1 to 5.0 percent of plant nanocellulose, 0.5 to 10.0 percent of coalescing agents, 0.1 to 3.0 percent of antioxidants and the balance deionized water. Wherein the amphiphilic chitosan is prepared from chitosan, quaternary phosphonium salt and sorbic acid. Amphipathic chitosan of the material has hydrophilic groups such as amino and carboxyl and a sorbate hydrophobic group, has hydrophilicity and hydrophobicity at the same time, and is extremely easy to combine with substances such as a coalescing agent, plant nanocellulose and an antioxidant to form a stable polymeric membrane layer, so that the mechanical property after membrane formation is remarkably improved, and the material has a good application prospect. Meanwhile, the plant nanocellulose particles can be stably coated in the polymeric membrane material layer, so that the mechanical property of the material is enhanced, and lasting and efficient antibacterial and antioxidant effects are realized. The invention further discloses a preparation method and application of the amphiphilic chitosan and plant nanocellulose composite coating fresh-keeping material.

The present invention discloses a semi-artificial diet for Tuta absoluta larvae, a preparation method thereof and an application thereof. In the present invention, 1000 mL of water is boiled, and after it is stable, 0.5 - 1 g of sorbic acid, 0.5 - 1 g of sodium p-hydroxybenzoate and 0.1 - 0.2 g of thiabendazole are added, and quickly stirred and melted. Subsequently, compound vitamins are added, and after stirring evenly, 500 - 550 g of malt embryos are added and stirred into a dough. When the temperature drops below 30 °C, 150 - 200 g of tomato leaf powder is added and stirred and mixed evenly to obtain the semi-artificial diet for Tuta absoluta larvae. The components of the semi-artificial diet of the present invention can not only meet the nutritional requirements of test insects, but also have an optimal compound ratio of different components, and particularly give the best nutritional ratio. At this ratio, the survival rate, pupation rate and emergence rate from larvae to pupae are high, and the deformity rate of pupae is low.

The invention relates to the technical field of air pollution prevention and control, and discloses a tail gas drying device based on sorbic acid production process, which comprises two groups of drying tanks which alternately operate, the two groups of drying tanks are respectively used as an adsorption tank and a desorption tank, a drying inner cylinder penetrates through the tanks, and an interlayer cavity is enclosed by a first separation assembly and a second separation assembly in the cylinder; the interior is divided into three groups of adsorbent bed layers; the lifting assembly drives the second separation assembly to ascend and descend, and the bed space, the cavity volume and the air outlet size can be dynamically adjusted according to the swelling and shrinking state of an adsorbent in the early and later periods of desorption, so that the problems that an existing drying tank is large in flow resistance due to direct filling of the adsorbent and poor in desorption efficiency are solved; layered design and cavity blocking reduce airflow resistance, secondary adsorption of the lower layer is avoided, sufficient desorption is guaranteed through dynamic adjustment, the desorption efficiency can be improved, the period is shortened, the service life of an adsorbent is prolonged, and continuous and stable tail gas drying is guaranteed.

The application discloses a pH-responsive slow-release bacteriostatic agent for in-situ inhibition of generation of acid mine drainage and a preparation method thereof, and belongs to the technical field of mine pollution remediation. The preparation raw materials are selected to include sorbic acid (SA), amino-modified mesoporous silica (NH2-MSN) and polyacrylic resin IV (PAR). The sorbic acid in the bacteriostatic agent has good bacteriostatic efficiency, and the amino-modified mesoporous silica is used as a slow-release material to improve the persistence and stability of the bacteriostatic efficiency. The polyacrylic resin IV is used as an outer blocking molecule, and has excellent pH response properties.

The invention relates to the field of medicinal emulsifiable paste, in particular to compound fluconazole emulsifiable paste and a preparation method thereof. The compound fluconazole emulsifiable paste is prepared from the following components in parts by weight: 0.6 to 5 parts of fluconazole, 0.2 to 2 parts of neomycin sulfate, 0.1 to 0.2 part of triamcinolone acetonide, 5 to 15 parts of stearic acid, 10 to 25 parts of white vaseline, 2 to 8 parts of glyceryl monostearate, 0.5 to 3 parts of medicinal dimeticone, 1 to 5 parts of polysorbate-80, 0.1 to 0.3 part of sorbic acid, 0.1 to 1 part of vitamin E, 0.01 to 0.1 part of EDTA (Ethylene Diamine Tetraacetic Acid) disodium, 5 to 15 parts of glycerol and the balance of purified water, wherein the total amount is 100 parts. According to the application, the antioxidant property of the cream is improved by adding the vitamin E and the EDTA disodium, the vitamin E is used for directly scavenging free radicals, the EDTA disodium is used for eliminating an oxidation catalyst, and the quality guarantee period of the cream can be remarkably prolonged and the drug effect can be maintained by combining the vitamin E and the EDTA disodium.

The present application relates to a kind of methods for removing heavy metal complex in wastewater, comprising the following steps, S1 configuration PMS composite reagent, the PMS composite reagent is made by including the following weight percentage of raw material ball milling, persulfate 50~90%, sulfite 5~30%, hypochlorite 5~20%;S2 in the heavy metal complex-containing industrial wastewater join the PMS composite reagent obtained in the S1, heavy metal in heavy metal complex is Cu, and one or several of Co, Cr, Ni, Pb and Zn, complex in heavy metal complex is one or several of EDTA, NTA, citric acid, oxalic acid, tartaric acid, sorbic acid, stirring is dissolved, and lye is added to maintain the pH of industrial wastewater to 9.5~11.0, and carries out fenton-like oxidation and breaks the complex reaction, after reaction, aftertreatment is obtained, and the regenerated water is obtained.The present application achieves the purpose of removing heavy metal complex in wastewater by the method of in-situ activation of persulfate without additional catalyst or the application of electricity, ultraviolet and other energy.

The invention provides mint hydrogel for diminishing inflammation and relieving itching and a preparation method thereof. The hydrogel is prepared from 10 to 30 parts of herba menthae extract, 5 to 15 parts of melaleuca alternifolia leaf water, 15 to 25 parts of aloe vera gel, 8 to 15 parts of glycerol, 2 to 6 parts of essential oil compound, 1 to 4 parts of sweet-scented osmanthus extract, 1 to 5 parts of artemisia indica extract, 0.1 to 0.5 part of cross-linking agent, sucrose stearate, sorbic anhydride olivic acid, p-hydroxyacetophenone and the like. The essential oil compound is subjected to beta-cyclodextrin / sodium alginate double-embedding treatment, and the cross-linking agent is chitosan grafted hyaluronic acid. The preparation process comprises the steps of composite water phase preparation, essential oil activation, gradient mixing of extracts, cross-linking reaction, high-pressure homogenization, gradient photocuring and the like. Tests show that the maximum anti-inflammatory swelling inhibition rate of the hydrogel reaches 68.9%, the maximum itching relieving rate of the hydrogel reaches 80.6%, the anti-inflammatory and itching relieving effects can be effectively achieved, and the performance of the hydrogel is improved through the cooperation of all the raw materials and the technology.

The invention provides a teak camel moth artificial feeding feed and a teak camel moth artificial feeding method, the feed comprises the following components by weight: 8% of wheat germ powder, 4% of soybean meal, 4% of yeast powder, 2% of casein, 2% of sucrose, 1.8% of agar powder, 1.5% of cellulose, 0.8% of Webster salt, 0.6% of vitamin C, 0.2% of sorbic acid, 0.3% of methyl p-hydroxybenzoate, 0.1% of cholesterol, 0.1% of choline chloride, 0.05% of inositol, 0.01% of folic acid, and the balance of water. And the balance of deionized water. The invention further provides an artificial feeding method of teak camelmoths, and the artificial feeding method comprises the steps of 1, adult mating and egg laying, 2, egg disinfection and incubation and 3, larva rearing. The feed does not contain host material teak leaves, and full-artificial continuous large-scale feeding of the teak camelmoths can be achieved.

The invention provides a composition containing exosome, which is prepared from the following components in parts by weight: 10 to 20 parts of exosome, 5 to 15 parts of extract, 0.3 to 0.5 part of antioxidant and 0.05 to 0.1 part of preservative, the extract is a mixture of 3-8 parts of aloe extract, 1-5 parts of camellia flower extract and 1-3 parts of cranberry extract; the preservative is one or more of benzoic acid, salicylic acid, boric acid and sorbic acid; the antioxidant is propyl gallate. When the composition is applied to an anti-aging product, the temperature sensing effect and the DPPH free radical scavenging rate are obviously improved.

The present invention relates to novel homopolymers or copolymers derived from muconic or sorbic acid, to a method for preparing same, to a composition, in particular a cosmetic composition, comprising at least one homopolymer or copolymer derived from muconic or sorbic acid, to a method for treating keratin materials, in particular human keratin materials such as the skin or hair, implementing the application onto the materials of at least one homopolymer or copolymer derived from muconic or sorbic acid or a composition comprising at least one homopolymer or copolymer derived from muconic or sorbic acid; to a method for preparing diacids from homopolymers or copolymers derived from oxidative degradation, in particular by ozonolysis, and to novel diacid compounds derived from the degradation.

The invention discloses an oyster enzymolysis ultrafiltration extract nasal spray and a preparation method thereof, the nasal spray comprises the following components: 5-10 wt% of oyster extract, 0.1-0.3 wt% of preservative, 0.05-0.15 wt% of sodium chloride and 0.1-0.3 wt% of emulsifier, the pH value is 5.5-6.5, the content of the preservative is 0.1-0.3 wt%, the content of the sodium chloride is 0.05-0.15 wt%, the content of the emulsifier is 0.1-0.3 wt%, and the balance is water. The preservative is one of benzalkonium chloride, sorbic acid and potassium sorbate, and the emulsifier is polysorbate 80. Through definite raw material composition, a step-by-step process and quality control, the bioavailability of active components is improved, the flavor of the product is optimized, the effect of safely and efficiently improving sleep is achieved, the problems of low bioavailability, poor flavor and potential safety hazards of an existing sleep improving product are solved, the process repeatability is high, and the preparation method is suitable for industrial production. The long-term use of people with chronic insomnia is facilitated.

The invention discloses a treatment technology for separating a sorbic acid isomerization product, and belongs to the field of chemical engineering. According to the method, water and ethanol in the eliminated mother liquor are separated through selective separation of the dehydration membrane, so that an ethanol solution with higher concentration is obtained, the concentrations of sorbic acid and isomers in the solution are increased, then the crystallization temperature is controlled by utilizing the solubility difference of the sorbic acid and the isomers in the alcohol, and the crystallization efficiency is improved. Sorbic acid containing a low isomerization product is separated and recovered, so that the quality of a finished product is effectively improved.

A composition (100) for inhibiting growth of microbial contamination is disclosed The composition includes a plurality of volatile antimicrobial components (110) including at least one of potassium sorbate and sorbic acid. The composition further includes a plurality of non-volatile antimicrobial components (120) including natamycin. A weight ratio of the plurality of volatile antimicrobial components to the plurality of non-volatile antimicrobial components is in the range of 10:2 to 10:1. The composition is placed at a distance from a target surface to inhibit microbial growth on the target surface by releasing the plurality of volatile antimicrobial components and the plurality of non-volatile antimicrobial components into a surrounding air. The target surface is exposed to microbial contaminants. moisture and humidity.

The application relates to a method for detecting additives in food by using pressurized capillary electrochromatography, which comprises the following steps: (1) preparation of mixed series standard solution: standard substances of benzoic acid, sorbic acid and sodium saccharin are weighed respectively, mixed standard solution is prepared by dissolving and constant volume, the mixed series standard solution is obtained by diluting in different proportions; (2) sample treatment and preparation of the liquid to be measured: the weighed food sample is diluted, constant volume is performed after ultrasonic treatment, and the sample liquid to be measured is obtained by filtration; (3) determination: the mixed series standard solution and the liquid to be measured are analyzed by using pressurized capillary electrochromatography, the standard curve is drawn according to the chromatographic peak height and the concentration of the mixed series standard solution, the chromatographic peak height of the liquid to be measured is determined, and the concentration of benzoic acid, sorbic acid and sodium saccharin in the liquid to be measured is obtained according to the standard curve. Compared with the prior art, the pressurized capillary electrochromatography is applied to the simultaneous detection of benzoic acid, sorbic acid and sodium saccharin for the first time, sample treatment is simple, the consumption of the mobile phase and the sample is small, and the detection time is short.

The present invention relates to a transparent hair care composition comprising: 0.1 to 5 wt% hydrolyzed yeast protein, 0.1 to 20wt% a non-ionic surfactant comprising a sorbic acid based non-ionic surfactant and alkoxylated alcohol based non-ionic surfactant, 0.01 to 3 wt% preservative, 0.01 to 3 wt% chelating agent, 0.01 to 3 wt% polycationic polymer, and 80 to 95wt% water.

The invention relates to a fabric anti-wrinkle finishing agent and a preparation method thereof. The fabric anti-wrinkle finishing agent is prepared from the following raw materials in percentage by mass: 30-40% of modified chitosan, 25-32% of citric acid, 2-4% of tea tree essential oil, 3-5% of dextrin, 1-3% of sorbic acid, 5-10% of glycerol and 13-27% of deionized water. Wherein the modified chitosan is a chitosan degradation product obtained by carrying out enzymatic degradation reaction and drying treatment on chitosan and a papaya extract. The invention provides a fabric anti-wrinkle finishing agent containing modified chitosan, and the modified chitosan is a chitosan degradation product obtained by carrying out enzymatic degradation reaction and drying treatment on chitosan and a papaya extract, experiments prove that when the fabric anti-wrinkle finishing agent is used for treating the fabric, the anti-wrinkle performance and the color fastness of the fabric can be remarkably improved, and particularly the color fastness to perspiration and acid stain can be remarkably improved.

The invention discloses a preparation method of a starch-based bacteriostatic microcapsule, which is characterized in that octenyl succinic acid modified starch is used as a wall material, sorbic acid is used as a core material, and the starch-based bacteriostatic microcapsule with high loading capacity and high embedding rate is prepared by combining rod pin type wet ball milling and spray drying embedding. The sorbic acid is subjected to wet grinding by adopting rod pin type ball milling, the sorbic acid is fully ground in a suspension environment, the particle size is reduced, composite embedding of starch and an active agent in the grinding process is provided, the microcapsule is prepared through spray drying treatment subsequently, the loading capacity of the microcapsule exceeds 10%, the embedding rate is higher than 90%, and the preparation method is simple and easy to operate. A new thought is explored in the field of starch-based microcapsule embedding, and meanwhile microcapsule products are effectively put into the manufacturing process of baked products.

This invention relates to the field of food processing technology, and discloses a method for preparing crispy beef, comprising the following steps: S1, taking 100 parts by weight of beef, adding 3.25 parts by weight of salt, 0.2 parts by weight of peppercorns, 0.4 parts by weight of white wine, 40 parts by weight of ice water, and 0.007 parts by weight of sodium sorbate and 0.015 parts by weight of sodium nitrite dissolved in the ice water, and placing it in a tumbler and stirring for 30 minutes. This invention, through precise marinating, ice water tumbling, and 72-hour low-temperature marinating, allows the marinade to fully penetrate the beef fibers, thoroughly removing the fishy smell, improving water retention, and addressing the problem of dryness. A compound brine using 28 kinds of spices is used, resulting in a rich and layered aroma, overcoming the single flavor deficiency of traditional processes. Frying at 260℃ for 2 minutes creates a crispy exterior and tender interior with a stable texture, and the sugar flavor is diluted to enhance palatability. Combined with aseptic cooling, vacuum packaging, and 121℃ high-temperature sterilization, the shelf life is extended, batches are stable, suitable for industrial production, and significantly improves product quality and competitiveness.

The present invention relates to the technical field of emulsification processes, and particularly to the production process of camellia oil emulsification; it includes the following steps: Step 1: Mix tapioca starch and water to obtain a starch milk; Step 2: Add glucoamylase and α-amylase to the starch milk, add Bacillus firmus for fermentation reaction, after the reaction, inactivate Bacillus firmus, glucoamylase, and α-amylase to obtain a fermentation product; Step 3: Mix the fermentation product, camellia oil, sorbitan monostearate, L-ascorbic acid palmitate, cocoa butter, water, and lecithin according to the mass ratio to obtain a mixture, heat the mixture to 40-45 °C, adjust the pH to 6-8, and circulate and process it 3-5 times under a pressure of 90-100 MPa through a high-pressure homogenizer to obtain a homogeneous emulsion. The prepared camellia oil emulsification product can still maintain a good effect on gastric mucosa repair after being stored under indoor light conditions at room temperature for more than 24 months.

The invention discloses a linalool derivative with a lasting disinfection function as well as preparation and application of the linalool derivative. The structure of the linalool derivative is shown as a formula (I), and the preparation method of the linalool derivative comprises the following steps: adding linalool and sorbic acid into an organic solvent, uniformly mixing, reacting for 2-6 hours under stirring and heating conditions to obtain a mixed product, removing the organic solvent in the mixed product to obtain a crude product, and purifying the crude product to obtain the linalool derivative. The linalool derivative is prepared through the esterification reaction modification of the linalool and the sorbic acid, so that the volatility of the linalool derivative is effectively reduced, and the effectiveness period of the linalool derivative is prolonged. Compared with linalool, the bacteriostatic durability of the cinnamomum camphora sorbic ester is remarkably improved, the bacteriostatic rate can still be higher than 85% within 8 h, and the cinnamomum camphora sorbic ester can be applied to preparation of a long-acting disinfectant. # imgabs0 #

The invention relates to the technical field of packaging sealing films, and particularly discloses a high-strength antibacterial sealing film for packaging and a preparation method thereof.A high-strength PLA-PDO base film is adopted as a basic structure of the sealing film, the tensile strength, tearing strength and other properties of the sealing film are improved, and the sealing film can bear stress in the packaging, transporting and using processes. A sorbic acid-silver complex is adopted as an antibacterial component of the sealing film, sorbic acid and silver ions have a synergistic effect, and the efficient antibacterial effect is achieved. The complex is loaded on porous nano silicon dioxide and is wrapped by a polycaprolactone shell layer, so that the antibacterial component is protected, the antibacterial agent is slowly and durably released, and the sealing film has a long-acting antibacterial function.

The invention discloses a biological agent for killing tree moss and a preparation method and application thereof, and belongs to the technical field of moss killing. Sodium sorbate, Tween 80, sodium polynaphthalene sulfonate and the phosphate buffer solution are used as raw materials, and the killing efficiency of tree moss is remarkably improved by regulating and controlling the dosage of sodium sorbate, Tween 80 and sodium polynaphthalene sulfonate and the pH value of the phosphate buffer solution. The biological agent has very high feasibility and effectiveness in practical application, and can be widely applied to the field of moss killing of trees such as the yellow common trees and the like.

To provide an eye drop-type eyewash composition and the like having excellent antiseptic properties.SOLUTION: The eye drop-type eyewash composition contains 0.005-0.03 w / v% of allantoin and does not contain any antiseptic agents selected from quaternary ammonium salt-based antiseptic agents, p-hydroxybenzoic acid esters, chlorobutanol, and sorbic acid.SELECTED DRAWING: None

The invention provides a method for rapidly detecting benzoic acid and sorbic acid in smoked and cooked sausages and hams, and belongs to the technical field of food detection and analysis. The smoked and cooked sausage and ham product is traditional processed meat with extremely regional characteristics, is rich in various nutrient substrates, is easily polluted by microorganisms to cause spoilage, and is short in shelf life. Among many preservatives, benzoic acid and sorbic acid have the most wide application range, and for the purpose of prolonging the shelf life of food, many enterprises often have the situations of over-range addition and over-limit addition of the two preservatives. According to the national food safety standard GB 5009.28-2016, the technical defects of long detection period, tedious degreasing treatment, low recovery rate, sample matrix interference and the like exist when liquid chromatography is used for detecting large-batch samples. The method is innovated on the basis of a liquid chromatography, based on the characteristic that the fat content of the smoked and cooked sausage and ham is relatively low, a sample is not degreased in a pretreatment link, and the purified sample liquid is diluted by 5 times and then is detected on a machine; benzoic acid and sorbic acid in the smoked and cooked sausage and ham are measured by accurately adjusting the pH value of a mobile phase, improving a chromatographic column and optimizing instrument parameters. The method is simple and practicable, is safe to operate, reduces the cost, and meets the daily detection requirements.

The invention discloses a preparation method of modified polyvinyl alcohol and modified polyvinyl alcohol, and belongs to the technical field of chemical synthesis, the preparation method comprises the following steps: adding vinyl acetate, a comonomer and methanol into a reaction kettle, heating to 55-65 DEG C, then adding a methanol solution of an initiator, then dropwise adding the methanol solution of the comonomer, and after dropwise adding is completed, reacting for 1-2 hours; after the reaction is completed, adding a methanol solution of sorbic acid to terminate the reaction, so as to obtain a polymer material; adding the polymer material into a rectification device, rectifying to remove residual monomers, and then adding methanol to obtain a resin solution; adding a sodium hydroxide methanol solution into the resin solution, heating to 40-60 DEG C, stirring and reacting for 20-60 minutes, and then drying to obtain the modified polyvinyl alcohol which is good in water solubility and stable in product quality.

The invention discloses a method for rapidly separating and determining additives in a beverage by using a rosinyl bonded silica gel chromatographic column, which comprises the following steps of: reacting a rosin derivative serving as a functional monomer with sulfydryl modified silica gel through a sulfydryl-alkene click method, and carrying out end capping treatment to obtain the additives in the beverage. The rosinyl bonded silica gel chromatographic filling microspheres with large specific surface area, rich pore structures and small particle size are synthesized, and the rosinyl bonded silica gel chromatographic column with the advantages of good permeability, low back pressure and the like is prepared by adopting wet column packing. The chromatographic column can be used for detecting sodium saccharin, benzoic acid and sorbic acid in the beverage. The chromatographic condition is low-pressure elution; the flow rate is 0.3 to 1.0 mL / min; the column temperature is 30-40 DEG C; the detection wavelength is 220 to 230 nm; the sample injection volume; 1-10 [mu] L; the operation time is 7 to 10 minutes; the separation degree of saccharin sodium and benzoic acid is 2.1 or above, and is greater than that of a C18 column; and the degree of separation of benzoic acid and sorbic acid is 3.5 or more. The method has the advantages of fast detection speed, retention time shorter than that of a C18 column, good selectivity and separation effect, simple operation, high efficiency and rapidness.

To provide a composition capable of forming a coating film having excellent adhesion and water resistance on a PC substrate. Provided is a two-component composition including a first composition containing a polymer A having a diene structure; and a second composition containing a polymer B having a dienophile structure, in which the polymer A is a polymer in which sorbic acid is added to a glycidyl group in a copolymer C containing glycidyl (meth) acrylate as a monomer unit, and the polymer B is a polymer in which maleimide acid is added to a glycidyl group in the copolymer C.

The invention relates to the technical field of insect feeding, in particular to an artificial feed for producing overinstar larvae of spodoptera frugiperda as well as a preparation method and a feeding method of the artificial feed. The artificial feed disclosed by the invention comprises corn flour, wheat bran, soybean meal, yeast powder, casein, ascorbic acid, cholesterol, inositol, sorbic acid, choline chloride, methyl p-hydroxyformate, streptomycin, compound vitamin B, calcium pantothenate, Webster salt, formaldehyde, agar, water and betaine in a specific proportion. The generation proportion of the overexpression larvae in a feeding group can be obviously improved, the larvae are uniformly developed, and a stable and reliable experimental insect source is provided for studying the effect of the overexpression larvae in the population adaptability of the spodoptera frugiperda, the insect molting mechanism and the like.