318 results about "Malic acid" patented technology

The invention relates to the technical field of agriculture, in particular to a preparation method and an application method of a zinc-rich cadmium-reducing yield-increasing foliar fertilizer. The specific technical scheme is as follows: the zinc-rich cadmium-reducing yield-increasing foliar fertilizer is prepared from the following components in percentage by mass: 20 to 30 percent of porous chitosan, 30 to 40 percent of L-malic acid and 40 to 50 percent of nano zinc oxide. The technical problem that in the prior art, the zinc content of rice cannot be increased, meanwhile, the rice yield cannot be increased, and the cadmium content of rice cannot be reduced is solved.

The invention belongs to the technical field of electrochemical energy storage, and provides a negative electrode electrolyte, a preparation method thereof and a zinc-bromine flow battery. The negative electrode electrolyte comprises the following components: zinc bromide, supporting electrolyte, a negative electrode additive and water, and the negative electrode additive comprises malic acid; and the concentrations of the zinc bromide, the supporting electrolyte and the malic acid in the negative electrode electrolyte are 2.0 to 2.5 mol / L, 2.0 to 3.0 mol / L and 0.02 to 0.04 mol / L respectively. Zinc dendrites and hydrogen evolution reaction are effectively inhibited, and cooperative improvement of coulombic efficiency, voltage efficiency and energy efficiency is achieved. Therefore, the malic acid is introduced into the negative electrode electrolyte, so that the zinc dendrite and hydrogen evolution reaction in the zinc-bromine flow battery can be effectively inhibited, and the cooperative improvement of coulombic efficiency, voltage efficiency and energy efficiency is realized.

The invention relates to the technical field of polyphenol extraction, and provides a green pear polyphenol extraction method which comprises the following steps: performing steam explosion treatment on pear residue dry powder, and then infiltrating and activating by using an aqueous solution containing L-malic acid; adding betaine and D-gluconic acid into the first part of ultrapure water to prepare a deep eutectic solvent; mixing the eutectic solvent with a second part of ultrapure water to prepare a composite extracting agent; putting the infiltrated and activated raw materials and a composite extracting agent into an extraction device to obtain an extracting solution; carrying out solid-liquid separation on the extracting solution to obtain a clear solution; and adsorbing the clarified liquid through macroporous adsorption resin, then eluting with an ethanol water solution, collecting polyphenol-rich eluent, and carrying out spray drying to obtain the pear polyphenol extract. According to the technical scheme, the quality of an extracted product is improved, and polyphenol oxidation and thermal degradation are reduced; meanwhile, the product storage stability is improved, the phenomena of wall sticking and caking of powder are reduced, and the product yield and physical properties are guaranteed.

The invention relates to the technical field of agriculture, in particular to a zinc-rich cadmium-reducing leaf surface blocking and controlling agent as well as a preparation method and an application method thereof. According to the specific technical scheme, the zinc-rich cadmium-reducing leaf surface blocking and controlling agent is prepared from, by mass, 10%-20% of gamma-chitosan, 20%-30% of L-malic acid and 50%-70% of zinc sulfate. The technical problem that in the prior art, the cadmium content of brown rice cannot be reduced through a leaf surface blocking and controlling agent is solved.

The invention discloses a modified aureobasidium pullulans strain based on reduction of malic acid pathway consumption and application of the modified aureobasidium pullulans strain. Gene for coding NADPH dependent malic enzyme and phosphoenolpyruvate carboxykinase in an aureobasidium pullulans genome is directionally knocked out. The transformation blocks a key consumption branch for synthesis and accumulation of the cytoplasmic malic acid, and effectively guides a central carbon metabolic flow to be more efficiently guided to a target product. Experimental results show that the polymalic acid yield and the saccharic acid conversion rate of the double-knockout engineering strain D3N5-delta3617 / deltapepck in fermentation are remarkably improved compared with those of an original strain, and the biomass is also increased. The invention provides a high-performance strain with important application value for industrial efficient fermentation production of polymalic acid.

Sterile filtered liquid lactase composition comprising a lactase, preferably a neutral or acidic lactase, an anion selected from malate, tartrate, citrate, gluconate and / or EDTA and a cation selected from sodium and potassium. Preferably, the composition further comprises a polyol. Addition of the said anions to lactase improves filterability by reducing pressure in a filtration system. Preferably the filtration forms part of an in-line filtration system in the production of a dairy product.

The application provides a Y molecular sieve adsorbent and a preparation method and application thereof. The preparation method comprises the following steps: mixing a pore-expanding agent and a Y molecular sieve, and calcining to obtain the Y molecular sieve adsorbent; wherein the pore-expanding agent comprises any one or a combination of at least two of sulfuric acid, hydrochloric acid, nitric acid, acetic acid, a sodium hydroxide solution, a potassium hydroxide solution, lactic acid, ammonia water, malic acid, succinic acid, propionic acid, formic acid, sodium carbonate, amino acid, ascorbic acid or sodium silicate. The application mixes the pore-expanding agent and the Y molecular sieve, and then performs calcination, so that the pore-expanding agent is effectively eliminated, the pore of the Y molecular sieve adsorbent is improved, the Y molecular sieve adsorbent with excellent adsorption performance is prepared, and efficient adsorption of carbon dioxide is realized. The preparation process of the Y molecular sieve adsorbent is simple, the preparation process cost is low, and the Y molecular sieve adsorbent has the advantages of green environmental protection.

The application provides a candidate drug for promoting embryo implantation efficiency of patients with uterine redox imbalance type RIF, and belongs to the technical field of embryo implantation. In order to solve the problem of how to find potential intervention drugs for the pathological mechanism of uterine redox imbalance type RIF, a five-step high-efficiency drug screening strategy based on an in-vitro implantation model of uterine redox imbalance type repeated embryo implantation failure is adopted to ensure the reliability and functional correlation of the screening results. The candidate drug screened by the five-step high-efficiency drug screening strategy includes any one of the following drugs: avobenzone, vasopressin, ethylenediaminetetraacetic acid dipotassium, larotrectinib sulfate, citicoline, opicapone, iclapa, L-leucine, fulvestrant, malic acid and lucotinib. Among these candidate drugs, avobenzone, vasopressin and ethylenediaminetetraacetic acid dipotassium are the best three drugs for promoting the implantation efficiency of patients with uterine redox imbalance type RIF.

The present invention provides a water-based surface preparation agent composition that combines paint film stripping and rust removal properties. [Solution] This is a surface preparation agent composition for removing rust along with the existing paint film when repainting an existing paint film applied to existing steel materials. It contains at least benzyl alcohol, a hydroxy acid, and water. The hydroxy acid is citric acid, malic acid, or an acidic salt thereof. Furthermore, it contains hydroxyethyl cellulose as an emulsifier for benzyl alcohol. The pH is preferably 4.0 to 6.0. This water-based surface preparation agent composition is applied to the existing steel material to remove rust along with the existing paint film.

The application discloses a compound fertilizer for promoting cotton high yield and a preparation method thereof, relates to the technical field of cotton fertilizer, and comprises first mother liquor A, second mother liquor B and third mother liquor C which are prepared, stored and packaged separately; the first mother liquor A contains urea phosphate, monoammonium phosphate, anhydrous citric acid, malic acid and manganese sulfate monohydrate; the second mother liquor B contains commercial 11-37-0 liquid ammonium polyphosphate, ammonium salt type polyaspartic acid solution, purified fulvic acid clear liquid and tri-potassium citrate; and the third mother liquor C is a mixed system of polyol complex state boron clear pre-liquid and medium complex state zinc pre-liquid. The application can improve the effective state stability of phosphorus, zinc and boron, reduce the risks of precipitation fouling and dripping head blockage, alleviate the risks of local salt peak and root injury in the seedling stage, promote the uniform emergence and young root growth of cotton, and improve the yield.

The application discloses a plant-based sewage filtering membrane and a preparation method thereof, and relates to the technical field of membrane materials. In the preparation of the plant-based sewage filtering membrane, tetraethyl orthosilicate, zinc acetate, an acetic acid solution and a polyvinyl alcohol solution are mixed, and then electrostatic spinning and calcination are performed to obtain a flexible base film. After the flexible base film is treated with trimethoxysilane, one side of the flexible base film is grafted with diethyl allyl malate, and the other side of the flexible base film is grafted with allyl trimethyl ammonium chloride. After treatment with hydrochloric acid, the plant-based sewage filtering membrane is obtained. The plant-based sewage filtering membrane prepared by the application has good flexibility, sewage filtering effect and antibacterial performance.

The invention relates to compositions containing selenite-containing compounds and pharmaceutically acceptable acids, selected from citric acid, acetic acid, malic acid, carbonic acid, sulphuric acid, nitric acid, hydrochloric acid, fruit acids or mixtures thereof, for use for treating cervical inflammations, dysplasia and / or carcinomas. The invention further relates to methods of using such compositions.

This application relates to the field of materials, and provides a method for preparing all-starch foamed tableware. By weight, the all-starch foamed tableware comprises the following components: 85-92 parts of composite modified starch, 23-38 parts of plant cellulose, 1-2 parts of foaming agent, 3.5-7 parts of nucleating agent, 1-1.5 parts of plasticizer, and 3-6 parts of crosslinking agent; wherein the foaming agent includes at least one of sodium bicarbonate, ammonium bicarbonate, and ammonium carbonate; the nucleating agent includes at least one of talc, calcium carbonate, montmorillonite, diatomaceous earth, straw powder, chitosan, and cyclodextrin; the plasticizer includes at least one of glycerol, sorbitol, ethanol, and water; and the crosslinking agent includes at least one of citric acid, malic acid, tartaric acid, maleic acid, succinic acid, and adipic acid. This application not only comprehensively improves the water resistance, heat resistance, mechanical strength, and cell uniformity of the all-starch foamed tableware, but also ensures that the product meets usage requirements.

The invention relates to the technical field of plant molecular genetic breeding, in particular to an SNP (Single Nucleotide Polymorphism) molecular marker closely linked with white gourd pulp malic acid major QTL (Quantitative Trait Loci) and application thereof. The nucleotide sequence of the SNP molecular marker is as shown in SEQ ID NO.4, and G / A mutation exists at the 26th basic group of the sequence. The molecular marker and the white gourd pulp malic acid have a close linkage marker characteristic, so that a KSAP primer pair is developed on the basis of the SNP molecular marker. Results of the specific embodiment of the invention show that the KASP molecular marker provided by the invention can be used for identifying the content of malic acid in pulp of wax gourd seeds or early-stage seedlings with true leaves, and the method is high in accuracy, low in cost and short in consumed time. Therefore, the SNP molecular marker and the KASP primer pair provided by the invention can be used for molecular marker-assisted selective breeding of white gourds, and the process of white gourd flavor, taste and quality breeding is accelerated.

The present application relates to the technical field of reversing insulin resistance, and particularly relates to a composition with components for reversing insulin resistance and a preparation method thereof, the composition comprising quercetin, procyanidin, malic acid, magnesium carbonate, zinc lactate and grains, and through synergistic effects of the components, the composition can reduce fasting blood glucose, fasting insulin and insulin resistance index, and improve insulin sensitivity index, and overcomes the problems in the prior art that the components of the traditional Chinese medicine composition are complex, the effective components for reversing insulin resistance and the synergistic mechanism are not clear, and the content of the effective components in the same medicine is not consistent due to the influence of the growth environment, resulting in unpredictable treatment effect.

The invention provides a white flower salvia miltiorrhiza composition and application thereof in medicines for preventing and treating atherosclerosis, and belongs to the technical field of traditional Chinese medicines. According to the technical scheme, the composition is characterized by comprising 3-5 parts of white flower salvia miltiorrhiza root slices, 1-2 parts of white flower salvia miltiorrhiza dried leaves and 1-2 parts of white flower salvia miltiorrhiza extract. Mixing the white flower salvia miltiorrhiza leaf powder with a malic acid aqueous solution, carrying out ultrasonic treatment, filtering, and carrying out alcohol precipitation on filtrate to obtain an alcohol precipitate; extracting the white flower salvia miltiorrhiza root powder by using supercritical carbon dioxide to obtain a supercritical extract; mixing the alcohol precipitate and the supercritical extract according to the weight ratio of (7-9): (1-3) to obtain a white flower salvia miltiorrhiza extract; the alcohol used in the alcohol precipitation is methanol; methyl acetate is used as an entrainer in the supercritical carbon dioxide extraction. The white flower salvia miltiorrhiza composition provided by the invention has the beneficial technical effect of remarkably improving atherosclerosis.

The invention relates to the technical field of foliar fertilizers, in particular to a foliar fertilizer for prolonging the leaf color viewing period of a color-leafed plant. The foliar fertilizer is prepared from the following components in 100 parts by weight: 0.5 to 1.5 parts by weight of vitamin B compounds, 0.01 to 0.05 part by weight of benzylaminopurine compounds, 0.02 to 0.05 part by weight of ethylenediamine tetraacetic acid chelated titanium, 0.3 to 0.5 part by weight of rhamnolipid, 0.4 to 0.8 part by weight of malic acid, 0.5 to 1.5 parts by weight of modified polyethylene glycol and 0.5 to 1.5 parts by weight of modified cellulose nanocrystals.

The application discloses a chromogenic culture medium for detecting enteropathogenic Escherichia coli, which contains peptone, sodium pyruvate, sodium chloride, D-sorbitol, D-malic acid, bile salt, dipotassium hydrogen phosphate, potassium dihydrogen phosphate, sodium hydroxide, kaolin, bromothymol blue, crystal violet, polyethylene glycol and agar, and the rest is water. The chromogenic culture medium is simple in composition, convenient to prepare and use, and can be used for identifying enteropathogenic Escherichia coli EPEC according to the color of bacterial colonies, and has the advantages of specificity, high efficiency, rapidness, low cost, simple result judgment and the like, and has a wide application prospect in food safety monitoring.

This invention belongs to the field of curing agent technology, specifically relating to a composite curing agent, its preparation method, and its application. The composite curing agent comprises the following raw materials in parts by weight: 40-50 parts crushed stone, 20-30 parts cement, 5-10 parts quicklime, 4-10 parts activator, 3-8 parts modified bentonite, and 0.3-0.5 parts crack-resistant agent. The preparation process of the modified bentonite is as follows: (1) Pretreated bentonite is added to an ethanol aqueous solution, then KH570 is added, and the mixture is stirred under heating conditions to obtain pre-modified bentonite; (2) The pre-modified bentonite is added to N,N-dimethylformamide, then diallyl malate and an initiator are added, and the mixture is heated to obtain the modified bentonite. This composite curing agent can significantly improve the mechanical properties and crack resistance of the cured soil.

The invention discloses protein soft sweets based on an olive pomace extract as well as a preparation method and application of the protein soft sweets. The protein soft sweets mainly consist of the following components in parts by mass: 10-50 parts of the olive pomace extract, 10-80 parts of collagen, 10-40 parts of gelatin, 1-20 parts of inulin, 1-10 parts of glucose syrup, 1-5 parts of malic acid and 1-5 parts of sodium citrate. The protein soft sweets based on the olive pomace extract have olive flavor, are amber, are crystal clear, glossy and rich in olive flavor before being sprayed with powdered sugar, and are moderate in viscosity, not sticky to teeth and good in elasticity and resilience after being sprayed with powdered sugar; the olive pomace extract prepared by the preparation method disclosed by the invention also has relatively high oxidation resistance, shows very high scavenging ability in the aspects of DPPH free radical scavenging ability and ABTS < + > free radical scavenging ability, has the free radical scavenging ability of the olive pomace extract, is beneficial to preventing oxidative damage and maintaining health, and can be used as an antioxidant functional food.

This invention proposes a combined inhibitor for separating bastnaesite and monazite, along with its method and application. The raw materials for the combined inhibitor include small organic molecules and microbial polysaccharides; the small organic molecules include one or more of oxalic acid, malic acid, tartaric acid, lactic acid, succinic acid, and citric acid; the microbial polysaccharides include one or more of currant gum, guar gum, xanthan gum, and gellan gum. This invention achieves highly selective inhibition of monazite on the mineral surface through the synergistic adsorption and action of the inhibitor, with small organic molecules and microbial polysaccharides as the main components, thereby efficiently separating bastnaesite under mild flotation conditions. It offers advantages such as good selectivity, strong action, low reagent cost, and environmental friendliness.

The present application relates to the separation of fermentation liquor, and discloses a method for extracting succinic acid from malic acid fermentation liquor. The method comprises the following steps: (1) solid-liquid separation I of the fermentation liquor, and collection of liquid phase I; (2) mixing and standing of the liquid phase I, polyaluminum chloride, polyacrylamide and diatomite, and then solid-liquid separation II and concentration, and collection of concentrated liquid; (3) pH adjustment of the concentrated liquid to 1-3, and then obtaining acidified liquid; (4) solid-liquid separation III of the acidified liquid, and then obtaining liquid phase II; (5) decolorization and separation of the liquid phase II, and then obtaining succinic acid. The method is free of organic pollution, environment-friendly, and can effectively improve the purity and yield of the prepared succinic acid.

According to the invention, a novel ternary acidic deep eutectic solvent (DES) is prepared, ethylamine hydrochloride (EH) is used as a hydrogen bond acceptor (HBD), and DL-malic acid (MA) and polyethylene glycol-400 (PEG-400) are used as hydrogen bond donors (HBA). The DES solvent has good performance on wood fiber biomass refining pretreatment, and three major components of lignocellulose can be efficiently separated. The ternary acidic DES disclosed by the invention is easy to synthesize, good in stability and simple in use method, and an ideal separation effect can be achieved when high biomass solid content is treated, that is, most cellulose is reserved in a solid form, and most hemicellulose and lignin are converted into a liquid form through dissolution or partial degradation to be separated; and separating the lignin component from the hemicellulose by anti-solvent precipitation. The prepared DES can be recycled after being filtered and subjected to rotary evaporation, still has a separation effect equivalent to that of an original solvent after being recycled for six times, and has good industrial application prospect and value.

The application discloses a method for recycling valuable metals in black powder in waste lithium batteries based on a Na2EDTA-malic acid mixed system, which comprises the following steps: 1) discharging, disassembling, crushing and screening the waste lithium batteries to obtain the black powder; 2) dispersing the black powder in a primary leaching liquid, adjusting the pH value of the primary leaching liquid to 3.0-4.5, and performing leaching in a water bath under stirring conditions, wherein the water bath temperature is controlled to be 50-90 DEG C, and the reaction is performed for 1-4 h, so that the metals in the black powder are dissolved into the liquid phase to form leaching slurry; and 3) performing liquid-solid separation on the leaching slurry obtained in the step 2) to obtain a leaching liquid containing Li, Ni, Co and Mn and leaching residue. The application has small corrosion, is green and environment-friendly, has high leaching efficiency, and is suitable for large-scale application.

The invention relates to the technical field of apple production place detection, in particular to a red Fuji apple production place discrimination method based on organic component analysis, which comprises the following steps: S1, constructing a linear discrimination function of organic components such as oxalic acid, succinic acid, tartaric acid, citric acid, malic acid, phlorizin, chlorogenic acid and rutin; s2, obtaining the contents of oxalic acid, succinic acid, tartaric acid, citric acid, malic acid, phlorizin, chlorogenic acid and rutin in the apple sample to be detected; s3, inputting the contents of oxalic acid, succinic acid, tartaric acid, citric acid, malic acid, phlorizin, chlorogenic acid and rutin in the obtained apple sample to be detected into the linear discrimination function, and taking a group of maximum discrimination function calculation values as a production area detection result. According to the method, the production places of red Fuji apples in five production areas can be discriminated to a certain extent through linear discrimination established on the basis of eight organic components, the classification accuracy rate reaches 95.2%, and technical support is provided for the production place traceability of the Jinning apples and the quality control of the apples.

The invention provides a lithium battery electrolyte additive and a preparation method thereof, and relates to the technical field of lithium batteries. The preparation method comprises the following specific steps: S1, adding a multi-walled carbon nanotube and polydopamine into an ethanol solution of malic acid, carrying out ultrasonic treatment, filtering, and calcining in an inert atmosphere to obtain a pretreated carbon nanotube; s2, adding the pretreated carbon nanotubes into absolute ethyl alcohol, adding tannic acid, and performing microwave treatment to obtain modified carbon nanotubes; s3, graphene is added into absolute ethyl alcohol, melamine is added, ultrasonic treatment and filtration are performed, calcination treatment is performed in an inert atmosphere, and modified graphene is obtained; and S4, adding the modified carbon nanotube in S2 and the modified graphene in S3 into absolute ethyl alcohol, mixing, and carrying out rotary evaporation to remove the solvent, thereby obtaining the target electrolyte additive. Through cooperation of the modified carbon nanotubes and the modified graphene, consumption of an electrolyte and active lithium in the cycle process is greatly reduced, the cycle life of the lithium metal battery is remarkably prolonged, the safety performance of the lithium metal battery is remarkably improved, and the application prospect is good.

The invention relates to low-sugar gum soft sweets and a preparation method thereof. The soft sweets comprise the following raw materials in parts by weight: 18-35% of a pectin compound, 40-50% of a sweetening agent, 3-5% of a plasticizer, 0.3-0.8% of malic acid, 0.2-0.5% of sodium citrate and the balance of deionized water. Wherein the pectin compound comprises the following raw materials in percentage by weight: 10-20% of a cation matrix, 15-25% of an anion matrix, 5-10% of a neutral matrix and the balance of deionized water; the cation matrix comprises chitosan hydrochloride and calcium salt, the anion matrix comprises the following raw materials: low-methoxyl pectin, high-methoxyl pectin, ellagic acid and cumaric acid, and the neutral matrix is locust bean gum. The cation matrix, the anion matrix and the neutral matrix of the pectin compound cooperate to make up the defects of weak structure, poor water retention, easy aging and the like caused by sucrose deficiency in a low-sugar environment, so that the soft sweets have both elasticity and toughness.

The invention discloses a loratadine oral liquid and a production process thereof. Comprising the following raw materials in parts by weight: 0.5 to 0.6 part of loratadine, 5 to 6 parts of beta-cyclodextrin, 10 to 12 parts of polyethylene glycol 400, 8 to 10 parts of glycerol, 6 to 8 parts of propylene glycol, 0.3 to 0.4 part of sucralose, 0.2 to 0.3 part of stevioside, 15 to 18 parts of maltitol, 1 to 1.2 parts of citric acid, 0.5 to 0.6 part of malic acid, 0.1 to 0.15 part of disodium EDTA (Ethylene Diamine Tetraacetic Acid), 0.8 to 1 part of vitamin C, 0.3 to 0.4 part of xanthan gum, 0.5 to 0.6 part of sodium carboxymethyl cellulose and 0.4 to 0.5 part of lemon essence. The composition comprises the following components in parts by weight: 0.1-0.15 part of menthol, 2-3 parts of hawthorn extract, 1.2-1.5 parts of soya bean lecithin and the balance of purified water, totaling 100 parts. The loratadine is clathrated by the beta-cyclodextrin, the absorption promotion effect of the soya bean lecithin is combined, and the compound sweetening agent, the compound stabilizer and the natural flavor substance are matched, so that the problems of poor solubility and obvious bitter taste of the loratadine are solved, and the stability and bioavailability of the product are also improved.

A patch composition for targeting herpes virus comprising the following ingredients: a patch base, trisodium phosphate, malic acid, sorbitol, sodium benzoate, cellulose gum, peppermint, sodium saccharin, naringin, wind wheel grass extract, xanthan gum, polyethylene glycol-8, calcium carbonate, hydroxyethyl cellulose, hydroxypropyl guar gum, sodium nitrate, hydrated silica, sodium lauryl sulfate, strontium chloride hexahydrate, tranexamic acid, two-faced needle extract, sodium monofluorophosphate, sea salt, potassium nitrate, sodium chloride, and purified water q.s.

The application belongs to the technical field of skin care product preparation, and discloses an alcohol-in-oil microcapsule bead and a method for preparing the same by using microfluidic technology and application of the same. The alcohol-in-oil microcapsule bead comprises a shell and a core material, the shell is formed by solidification of an oil phase solution, and the core material is composed of an alcohol phase solution; the oil phase solution is composed of an oil phase film material, an oil phase solvent and an oil phase active substance, the oil phase film material is composed of HDI / trimethylol hexyl lactone cross-linked polymer and castor oil / IPDI copolymer, the oil phase solvent is composed of squalane, white pool flower seed oil and diisostearyl malate, and the oil phase active substance is composed of ascorbic acid tetraisopalmitate, tocopherol and ceramide NP; the alcohol phase solution is composed of an alcohol phase solvent and an alcohol phase active substance, the alcohol phase solvent is butanediol, and the alcohol phase active substance is Ampelopsis aconitifolia extract.