702 results about "Saturated fatty acid" patented technology

The invention discloses a schizochytrium limacinum genetic engineering strain capable of remodeling an FAS (Fibroblast Activated Sequence) pathway as well as a construction method and application thereof. The schizochytrium limacinum gene engineering strain is obtained by heterologous expression of a C16 elongase gene E16, a C18 elongase gene E18, a delta 9 desaturase gene D9, a delta 5 desaturase gene D5, a delta 6 desaturase gene D6 and a delta 15 desaturase gene D15 in a schizochytrium limacinum wild type. The recombinant schizochytrium limacinum described herein is capable of producing EPA comprising 2.08% by total fatty acids while also producing DHA comprising at least more than 41% by total fatty acids. In addition, the invention discloses a method for producing unsaturated fatty acid through a double-path channel of PKS and FAS, which is beneficial to promotion and application of a technology for producing EPA and DHA by schizochytrium limacinum.

The invention relates to the technical field of grass carp nondestructive testing, in particular to a grass carp muscle unsaturated fatty acid content nondestructive testing method based on scale characteristic wavelength. The method comprises the following steps: constructing a back propagation neural network, and training the network by using a plurality of samples containing scale wavelength information and unsaturated fatty acid information to obtain a prediction model; and the fresh grass carp scale wavelength information is input into the prediction model to obtain the unsaturated fatty acid content of the living grass carp muscle, so that rapid nondestructive detection can be realized, and the detection accuracy is relatively high.

An acne clearing composition for optimizing skin grease mass, comprising the following components in parts by mass: 0.1-5 parts of a mango leaf extract, 0.1-10 parts of a guaiacum officinale extract, 0.1-10 parts of N-acetylglucosamine, 0.1-10 parts of a yeast extract, and 0.01-5 parts of EUK-134. The components of the acne clearing composition can cooperate with each other, so that optimization of sebum components, maintenance of the stability of proportions of saturated fatty acids / unsaturated fatty acids of the sebum components and inhibition of sebum peroxidation are realized on the whole, thereby achieving the effects of mildly clearing acnes and repairing a sebum layer barrier, and the acne clearing composition has excellent antibacterial performance. Moreover, the acne clearing composition can be added into cosmetics as an active ingredient, so that the cosmetics are mild and non-irritating, and the preparation method for the acne clearing composition is simple and uses easily obtained raw materials, thereby facilitating actual production.

The invention relates to a laundry gel bead with excellent stability. The laundry gel bead with excellent stability comprises the following components: a surfactant, a modified surfactant, a solvent, a neutralizer, a chelating agent and an auxiliary agent, wherein the modified surfactant is obtained by reacting acrylic acid modified fatty alcohol-polyoxyethylene ether, sodium p-styrenesulfonate and methyl oleate ethoxylate. As the modified surfactant contains a large amount of ethyoxyl and other groups, the modified surfactant can act together with other ethyoxyl-containing surfactants to balance the irritation caused by a large amount of sulfonic acid, saturated fatty acid and other components in the laundry gel bead formula, thereby enhancing the mildness of the laundry gel beads, lowering the irritation of the washed clothes residues, and enhancing the laundry gel bead mildness. The irritation to skin and clothing fibers is effectively reduced; in addition, the modified surface active agent, the anionic surface active agent and the nonionic surface active agent act together, so that the dirt-removing capability of the laundry condensate beads is improved together.

The invention relates to the technical field of grease processing, in particular to a preparation method for extracting refined vegetable oil fatty acid. A preparation method for refined vegetable oil fatty acid extraction comprises the following steps: vegetable oil refining treatment and refined vegetable oil fatty acid separation and extraction. In the vegetable oil refining treatment process, the degummed vegetable oil is subjected to deacidification and decolorization treatment by using the modified rice hull-based porous carbon, so that pigments, free fatty acids and heavy metal components in the vegetable oil can be efficiently adsorbed, the effects of adsorption, deacidification and decolorization are achieved at the same time, and the vegetable oil refining efficiency is effectively improved; vegetable oil refining quality is improved, so that the extraction effect of refined vegetable oil fatty acid is improved; in the separation and extraction process of fatty acid in the refined vegetable oil, the contact between urea and saturated fatty acid in the refined vegetable oil can be promoted by adding the crystallization inclusion additive, and a stably-clathrated composite crystal is quickly formed, so that the extraction purity of unsaturated fatty acid is improved.

The invention discloses a eutectic composite phase change material and a preparation method thereof, the composite phase change material takes long-chain fatty acid, long-chain alcohol and saturated fatty acid as raw materials, and the obtained composite phase change material shows excellent heat storage and release capability and temperature regulation capability.

The invention provides a method for preparing diglyceride oil by a solventless enzymatic method, which comprises the following steps: S1, mixing saturated fatty acid A and saturated fatty acid B to prepare a liquid eutectic mixture; s2, mixing the eutectic mixture, glycerol and lipase in a reaction system, and carrying out esterification reaction to obtain diglyceride; s3, separating the prepared diglyceride, adding the saturated fatty acid A and / or the saturated fatty acid B into the reaction system again to form a liquid eutectic mixture again, and repeating the step 2; wherein in the step S1, the saturated fatty acid A and the saturated fatty acid B are selected from C10-C20 alkanoic acid, in the step S2, the mass ratio of the eutectic mixture to the glycerol is 1: (1-5), and the temperature of the esterification reaction is 35-78 DEG C. The method solves the problem that the high-melting-point saturated fatty acid is difficult to utilize in the existing technology for preparing the diglyceride oil by the solvent-free enzymatic method.

The invention relates to the technical field of microbiology and food processing, in particular to pediococcus acidilactici and application of the pediococcus acidilactici in preparation of a brain-intestinal axis regulating efficacy metagen product.The high-activity pediococcus acidilactici DY-1 is separated out from natural fermentation pickles of super-polyselenium plant cardamine violifolia for the first time; the strain can be widely applied to fermentation of high-selenium plant-based food, can significantly promote glycolysis release of selenium-containing active substances, has good acid resistance, high protease activity and high lipase activity, can fully ferment plant-based fermentation raw materials, and has high yield. Glycolysis of macromolecular substances such as protein, saccharides and fat is facilitated, accumulation of active ingredients such as essential amino acid, unsaturated fatty acid, alkaloid and phenolic substances is promoted, and the edibility and functionality of the product are improved; and the organic selenium-rich metagen product prepared by sterilizing the fermentation mixture can synergistically improve human body cognition and emotion regulation regulated by microorganism-intestinal-brain axis.

An object of the present invention is to provide a lactase solution showing good permeation through a filtration filter, a lactase solution showing good permeation through a filtration filter and having a good residual lactase activity, and a lactase solution showing good permeation through a filtration filter and having a good residual lactase activity even when a lactase solution having a low protease activity and a low arylsulfatase activity as contaminant enzymes is used.A lactase solution containing any of (i) to (iii) below.(i) 0.0001 to 0.1 mass % of an unsaturated fatty acid or a salt thereof(ii) 0.0001 to 0.1 mass % of a saturated fatty acid salt(iii) 0.01 to 10 mass % of at least one selected from yeast extract, soybean peptone, pea protein, a casein degradation product, and corn steep liquor

The invention discloses a heat storage unit and an assembling method and application thereof. The heat storage unit comprises a metal heat storage shell and a phase change layer, a heat storage space in the metal heat storage shell is filled with the phase change layer, and a phase change material of the phase change layer comprises the following components: 85.0 wt.%-95.0 wt.% of a phase change base material, 1.0 wt.%-3.0 wt.% of a nucleating agent, 2.0 wt.%-4.0 wt.% of a thickening agent and 0.5 wt.%-2.0 wt.% of a corrosion inhibitor; the phase-change base material comprises one of saturated fatty acid, an alcohol compound or an inorganic phase-change base material; the corrosion inhibitor comprises at least one of a nitrogen-containing heterocyclic compound, an oxygen-containing heterocyclic compound, molybdate, chromate and tungstate. A phase change base material and a corrosion inhibitor are selected for combined use, the corrosion inhibitor dissociates and forms substances with negative charges such as BTA <->, MnO4 < 2-> and CrO4 < 2->, a metal shell is in contact with the phase change material to lose electrons to form metal ions with positive charges, and the metal ions are combined with the substances with negative charges such as BTA <->, MnO4 < 2-> and CrO4 < 2-> to generate a compact long-chain complex. Further contact between other corrosion ions and metal is inhibited, so that the purpose of corrosion prevention is achieved.

The invention provides a method for nondestructive detection of contents of EPA and DHA in adductor muscles of scallops based on Raman spectroscopy, which comprises the following steps: taking a proper amount of gill filament tissues in a survival state of the scallops by using a nondestructive gill filament tissue taking method, preparing into frozen slices, performing Raman laser scanning on the slices to obtain original data, performing pretreatment such as normalization, noise reduction, baseline correction and the like, and determining the content of EPA and DHA in the adductor muscles of the scallops. Selecting a characteristic wavelength, and combining with adductor muscle lipidome data to establish a model for predicting the content of unsaturated fatty acid in adductor muscle in a cross-tissue manner by gill filament Raman data. Compared with an existing method for detecting the content of unsaturated fatty acid in scallops, the method has the advantages that the content of unsaturated fatty acid in rhabdoids of main edible parts of the scallops can be quickly, accurately and simply detected under the condition that the scallops survive, and the detection cost is greatly reduced; an efficient and simple technical means is provided for breeding of shellfish quality characters, and popularization and promotion in comprehensive evaluation and genetic improvement work of aquatic germplasm are facilitated.

Provided is an insulin secretion-promoting agent comprising, as an active ingredient, a triglyceride represented by the following formula (I):wherein R1, R2 and R3 each denotes a saturated fatty acid residue, at least one of which is a pentadecanoic acid residue. An insulin secretion-promoting action of the pentadecanoic acid triglyceride at the time of elevated blood glucose level is discovered, and pharmaceuticals and health foods for improving blood glucose level and diabetes are provided using this triglyceride.

The invention provides a negative electrode piece, a battery, an energy storage device and electric equipment, the negative electrode piece comprises a negative electrode current collector, at least one surface of the negative electrode current collector is provided with a negative electrode material layer, and the negative electrode material layer comprises a negative electrode material and a negative electrode binder; the negative electrode binder comprises modified styrene-butadiene rubber particles formed by a styrene-butadiene rubber main chain, long-chain unsaturated fatty acid with the carbon chain length of C14-C24 and an anhydride compound; the average particle size of the modified styrene butadiene rubber particles is D50, and D50 is larger than or equal to 190 nm and smaller than or equal to 210 nm.

The present application relates to the field of biochemical engineering, and discloses a composition containing eicosapentaenoic acid ethyl ester, a preparation method therefor, and a use thereof. The preparation method for the composition containing eicosapentaenoic acid ethyl ester disclosed in the present application comprises the following steps: transesterification, multi-stage molecular distillation, urea inclusion, rectification and preparative chromatographic purification. In the present application, by means of performing molecular distillation and urea inclusion before rectification, a liquid mixture can be separated, removing high-boiling-point saturated fatty acid ethyl esters and most fatty acid ethyl esters with one double bond, thereby effectively lowering the rectification temperature and preventing the formation of excessive isomers. Furthermore, the composition obtained by means of the described steps can achieve an eicosapentaenoic acid ethyl ester content of as high as 96.5 area% to 99.5 area%, with low isomer and impurity content, making it suitable for use in the preparation of food and pharmaceuticals.

The invention provides an unsaturated fatty acid modified bio-based nano-composite coated fertilizer and a preparation method thereof, and belongs to the technical field of coated controlled-release fertilizers. The preparation method comprises the following steps: firstly, preparing a silicon-based fatty acid modified halloysite nanotube by taking unsaturated fatty acid, organosiloxane and a halloysite nanotube as raw materials, and preparing semi-cured degradable bio-based polyurethane by taking bio-based polyol, polyester diol and isocyanate as raw materials; the unsaturated fatty acid modified bio-based nano-composite coating material is prepared by modifying halloysite nanotubes, then loading the modified halloysite nanotubes onto the surface of the semi-cured degradable bio-based polyurethane, and heating and curing to obtain the unsaturated fatty acid modified bio-based nano-composite coating material, the coating material has excellent compactness and surface super-hydrophobicity, and the coated fertilizer obtained by compounding the coating material with the fertilizer has excellent controlled release performance.

The invention discloses a method for preparing chocolate with high heat resistance, blooming resistance, high dietary fiber and low saturated fatty acid based on biphase gel and a product, and belongs to the technical field of oil processing application, and the method comprises the following steps: adding an emulsifier and solid fat into edible vegetable oil, and heating and stirring until the emulsifier and the solid fat are completely molten to obtain an oil gel phase; adding dietary fibers into water, and completely dissolving the dietary fibers to form a hydrogel phase; and mixing the obtained hydrogel phase and the oil gel phase, carrying out high-speed shearing emulsification, and cooling to room temperature in an ice-water bath to obtain the biphase gel. Different types of biphase gels are prepared by adjusting the ratio of the oil phase to the water phase, and the biphase gels are used for partially replacing cocoa butter to prepare the chocolate, so that the fat content is reduced, the heat resistance of the chocolate is improved, the frosting phenomenon of the chocolate is effectively delayed, the prepared chocolate does not contain trans-fatty acids, the saturated fatty acids are reduced, and the chocolate has good stability. And dietary fibers are contained, so that human health is benefited.

The invention belongs to the technical field of shortening preparation, and particularly relates to shortening base oil with low calorie and high oxidation stability and a preparation method of the shortening base oil. According to the preparation method of the shortening base oil with low calorie and high oxidation stability, provided by the invention, the novel shortening base oil with high oxidation stability, zero trans form, low cholesterol and low calorie is produced by taking palm stearin, cyperus esculentus oil and medium-carbon-chain triacylglycerol oil as raw materials and taking immobilized lipase Lipozyme RMIM as a catalyst; the problems that existing shortening is poor in oxidation stability, high in cholesterol content, excessive in trans-fatty acid content and high in long-carbon-chain saturated fatty acid content can be solved, and the low-calorie high-nutrition high-quality shortening has extremely wide application prospects in the field of preparation of low-calorie high-nutrition high-quality shortening.

Provided is a collagen production promoter comprising, as an active ingredient, a triglyceride represented by the following formula (I), wherein R1, R2 and R3 each denotes a saturated fatty acid residue, at least one of which is a pentadecanoic acid residue. The triglyceride comprising the pentadecanoic acid promotes the production of skin fibroblasts and collagen, and can be used as a topical skin care composition and a beauty food or beverage for improving the condition of skin.

The invention discloses a quinazolinone carboline compound as well as a pharmaceutical composition and application thereof. It is found for the first time that the quinazolinone carboline compound with the structure shown in the formula I has the SCD1 inhibiting effect, the activity of saturated fatty acid desaturase can be inhibited, the quinazolinone carboline compound plays a role in adjusting fatty acid composition, and an effective new means and a new approach are provided for treating SCD1 drug target diseases. # imgabs0 #

The invention provides a hydrophobic modified chitosan material as well as a preparation method and application thereof in wound care and hemostasis. The hydrophobic modified chitosan material provided by the invention comprises chitosan and saturated fatty acid physically crosslinked on a side chain of the chitosan, the deacetylation degree of the chitosan is 75 to 95 percent; the carbon chain length of the saturated fatty acid is 11-18 carbon atoms. The hydrophobic modified chitosan material provided by the invention can be used for stopping arterial bleeding.

The invention relates to the technical field of preparation methods of nutritional products, in particular to a preparation method of ganoderma lucidum spore oil with a liver regulating effect. Comprising the steps of preparing ganoderma lucidum spore powder, extracting ganoderma lucidum spore oil and enriching the ganoderma lucidum spore oil. Ganoderma lucidum blocks are treated through an ultrasonic extraction technology, ganoderma lucidum spore powder is prepared through a spray drying method, n-hexyl alcohol is used for soaking extraction, high-purity ganoderma lucidum spore oil is obtained through vacuum concentration and molecular distillation, and residual solvent is removed through film evaporation. Active ingredients such as triterpenoids and unsaturated fatty acid are further enriched by using supercritical CO2 extraction; the extraction efficiency and the purity of active ingredients of the ganoderma lucidum spore oil are remarkably improved, the obtained ganoderma lucidum spore oil has remarkable effects in the aspects of reducing liver toxicity indexes (ALT and AST) and enhancing antioxidant enzyme activity (SOD and GSH-Px), the operation controllability is high, the ganoderma lucidum spore oil is suitable for large-scale industrial application, and technical support is provided for research and development of liver protection drugs and functional food.

The invention provides vitamin B12 modified microspheres capable of efficiently loading His tag recombinant protein as well as a preparation method and application of the vitamin B12 modified microspheres, and belongs to the technical field of biological medicines. The preparation method of the vitamin B12 modified microsphere for efficiently loading the His tag recombinant protein comprises the following steps: (1) carrying out esterification reaction on unsaturated fatty acid containing sulfydryl, disulfide bond or olefinic bond, saturated fatty acid and vitamin B12 to prepare an amphiphilic vitamin B12-lipid conjugate; and (2) taking the amphiphilic vitamin B12-lipid conjugate, PLGA (poly (lactic-co-glycolic acid)), a multi-sulfydryl cross-linking agent and a photoinitiator as raw materials, and preparing the raw materials into microspheres by adopting a microfluidic method, so as to obtain the vitamin B12 modified microspheres capable of efficiently loading various His tag recombinant proteins. The microsphere provided by the invention overcomes the problems of protein load stability and burst release of traditional microspheres, and various different His tag recombinant growth factors can be flexibly selected according to the requirements on different growth factors in treatment of complex bone defects caused by different pathogenesis.

The invention discloses a method for automatically identifying unsaturated fatty acid and double bond positions thereof. According to the invention, the principle of regular fragmentation of unsaturated fatty acid in a collision dissociation mode of a liquid chromatography-tandem mass spectrometer after the unsaturated fatty acid is subjected to a Pattern-Buchi (PB) reaction is utilized; the invention develops an automatic data processing method for unsaturated fatty acid mass spectrum data acquired in two modes of a data dependent acquisition mode and a data non-dependent acquisition mode in liquid chromatography-tandem mass spectrometry, and can automatically identify unsaturated fatty acid and double bond positions thereof from huge DDA data of liquid chromatography-tandem mass spectrometry. And the quantitative analysis of the unsaturated fatty acid is realized by utilizing the strength information of the characteristic fragment ions in the DIA data, so that the accuracy and the efficiency of the qualitative and quantitative analysis of the unsaturated fatty acid are remarkably improved.

The invention relates to the technical field of lubricants, in particular to rolling oil for aluminum material hot rolling and a preparation method of the rolling oil, the rolling oil comprises 75 wt%-80 wt% of base oil, 15 wt%-20 wt% of unsaturated fatty acid, 2 wt%-3 wt% of ethanolamine compounds, 0.5 wt%-1 wt% of antioxidants, 0.5 wt%-1 wt% of boric acid, 0 wt%-0.5 wt% of defoaming agents and the balance inevitable impurities; according to the preparation method of the rolling oil, the raw materials react in the preparation process to synthesize effective components with the functions of an emulsifier, an extreme pressure anti-wear agent and the like, so that the effect of combining multiple raw materials can be achieved without special multiple kinds of raw materials, the lubricating and annealing detergency is good, the boric acid can inhibit dissolution of ethanolamine, and the service life of the rolling oil is prolonged. The service life of the rolling oil is prolonged.

The present invention relates to a lipid pre-concentrate and a method for preparing same, wherein the lipid pre-concentrate uses a biodegradable lipid having low injection force and low toxicity to delay the release rate of a drug, thereby exhibiting sustained release so that the administered drug can be continuously released for a long period of time.

The present invention discloses a chitosan-starch composite Janus particle and its preparation method and application. The present invention uses starch modified with succinic anhydride as a particle stabilizer for Pickering emulsion, and saturated fatty acid as an oil phase to prepare a Pickering emulsion template, so that a part of the starch particles are locked in the solidified fatty acid oil phase, and a part is exposed to the water phase; then the natural polysaccharide chitosan is electrostatically adsorbed with starch, so that the surface of the starch particles exposed in the water phase is combined with chitosan nanoparticles to achieve the purpose of asymmetric modification. The present invention prepares Janus particles combined with two polysaccharides for the first time, which can combine the characteristics and advantages of two biomacromolecules, and further expand the application of Janus particles in the field of food or medicine. The raw materials used in the present invention are green, environmentally friendly and natural polysaccharide materials with good biocompatibility, and have broad application prospects.

The invention discloses a plant lactobacillus and application thereof, and belongs to the technical field of microorganisms. The plant lactobacillus 002P provided by the invention is a new strain, and is round, white, neat in edge, smooth in surface and soft in texture on an MRS solid culture medium; growth of bacteria can be remarkably inhibited, an inhibition effect on staphylococcus aureus, pseudomonas aeruginosa and escherichia coli is achieved, and the inhibition zone is 23.33-279.33 mm; the healing of infected wounds can be obviously promoted; the selenium conversion rate is excellent, and the maximum selenium conversion rate can reach 88%; the nano-selenium prepared from the plant lactobacillus 002P is spherical, has the particle size of 200-500nm, has excellent properties of resisting oxidation, relieving hepatotoxicity induced by saturated fatty acid, promoting expression of selenoprotein in a mouse body and reducing blood fat, and has a wide application prospect.

The application discloses a preparation method of a high internal phase emulsion stabilized only by proteins, which mixes a completely hydrated protein solution as a water phase with an oil phase, and controls the hydrodynamic characteristics of a shearing emulsification process to obtain the high internal phase emulsion stabilized only by proteins. The preparation method of the application can obtain the high internal phase emulsion stabilized only by food-grade proteins through one-step shearing emulsification without other measures. The prepared high internal phase emulsion has good gel characteristics, stability and high safety, and can be used as a substitute for partially hydrogenated vegetable oil and saturated fatty acids. Meanwhile, the method is simple in operation, low in preparation cost and suitable for large-scale industrial promotion.

Liquid composition, comprising: at least 40% by weight of a cannabinoid, based on 100% by weight of the total liquid composition; an oily medium consisting of triglycerides in which at least 95% of the acid residues are saturated fatty acids with a chain length of 8 and / or 10 carbon atoms; and an ascorbate ester in which the ascorbate ester is a fatty acid with a chain length in the range of 8 to 22 carbon atoms, contained in an amount of 0.01 to 1 wt.%, based on a total weight of the oily medium and the ascorbate ester.

A negative electrode for a secondary battery includes a silicon-containing particle, and a coating layer that covers at least a portion of the surface of the silicon-containing particle. The silicon-containing particle includes an ion-conducting phase, and silicon phases dispersed in the ion-conducting phase. The coating layer includes a lithium sulfonate compound and a linear saturated fatty acid compound having 10 or more carbon atoms.