17 results about "Methyl palmitate" patented technology

This invention discloses a method for preparing high-quality bio-based 1,9-nonanediol, comprising the following steps: transesterification, precipitation, fatty acid methyl ester refining, ozone oxidation pyrolysis, solvent recovery, esterification, dimethyl azelaate refining, and hydrogenation to obtain high-quality bio-based 1,9-nonanediol. This invention achieves gradient and full-component utilization of vegetable oil raw materials: the oil-based portion of triglycerides is used to produce high-quality bio-based 1,9-nonanediol, while simultaneously producing byproducts such as methyl palmitate, methyl stearate, propionic acid, hexanoic acid, and nonanoic acid; the glycerol-based portion of triglycerides is used as a byproduct of glycerol production. This invention utilizes esterification to reconstruct the products of ozone oxidation pyrolysis, converting the high-boiling-point monomethyl azelaate into the low-boiling-point dimethyl azelaate, achieving efficient separation from saturated fatty acid methyl esters. The dimethyl azelaate, as a raw material, is then hydrogenated to obtain high-quality nonanediol, significantly reducing production costs.

The invention discloses an Apiotrichum loubieri gene and an application of the Apiotrichum loubieri gene. Relates to the technical field of fermentation. The invention provides a specific strain and application thereof in reconstituted tobacco. According to the tobacco leaf extracting solution fermented by the bacterial strain, the content of esters such as 2, 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate, dimethyl phthalate, tributyl phosphate, dihydroactinidiolide and methyl palmitate is remarkably increased, and the content of the esters such as 2, 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate, dimethyl phthalate, tributyl phosphate, dihydroactinidiolide and methyl palmitate is remarkably increased; nine novel ester substances with aromatic smell, fruit fragrance, flower fragrance and other characteristic aromas are newly generated, and four phenolic aroma components are newly added. And the whole fragrance style is obviously enhanced. It is shown that the aroma-producing Apiotrichum loubieri AL-4 fermented tobacco enzyme extracting solution has good aroma-producing capacity, and through the combined effect of enzymolysis and fermentation, the aroma-producing Apiotrichum loubieri AL-4 fermented tobacco enzyme extracting solution is expected to play an important application value in the field of reconstituted tobacco raw material quality improvement.

The application belongs to the technical field of biological medicine, and particularly relates to a lactobacillus paracasei and application thereof. The lactobacillus paracasei ZY101 is preserved in the China General Microbiological Culture Collection Center, has a preservation number of CGMCC No. 32360, a preservation date of October 25, 2024, and an address of No. 3, Beichen West Road, Chaoyang District, Beijing. Compared with a commercial bacillus acidophilus, the apricot vinegar prepared by using the lactobacillus paracasei ZY101 has new substances including linalool, alpha-farnesene, 2-phenylacetic acid ethyl ester and geranylgeraniol, and further promotes the aroma of the apricot vinegar. Compared with the commercial bacillus acidophilus, the existing substances are obviously improved, and specifically include ethyl acetate, isoamyl acetate, ethyl octanoate, ethyl hexanoate, acetoin, methyl palmitate, gamma-deca-lactone, ethyl dodecanoate, delta-deca-lactone, trans-nerolidol and dihydro-beta-ionone.

The invention discloses a preparation method of ethylhexyl palmitate, and relates to the technical field of ethylhexyl palmitate. According to the method, firstly, isooctanol is gasified and then introduced into a methyl palmitate solution, ethylhexyl palmitate is prepared through transesterification, gaseous feeding can improve the instantaneous concentration of alcohol in a liquid phase, the reaction is promoted to be carried out in the positive direction, the reaction rate is increased, meanwhile, methanol generated through the transesterification method can be gasified and taken out of a system, and the yield of ethylhexyl palmitate is increased. Forward proceeding of the reaction is further promoted, so that the reaction is more thorough; secondly, chromium salt is used as a metal source precursor and a 2-sulfo-4, 4 '-biphenyldicarboxylic acid ligand to synthesize a catalyst, a biphenyl group in the ligand provides rigid and hydrophobic large pore channels and provides a local high-concentration reaction environment, gaseous isooctanol can be easily diffused into the pore channels of the catalyst and is in contact with enriched methyl palmitate, and the reaction efficiency is improved; and sulfonic acid groups uniformly distributed in the ligand serve as solid superacid, strong acid sites are provided, and the production efficiency is improved.

The present disclosure provides nanoparticles comprising methyl palmitate and at least one serumglobular protein and uses thereof.

The application belongs to the technical field of traditional Chinese medicine detection, and specifically provides a construction method of a characteristic chromatogram of fatty acid components in Zhi Yinyanghuo and application thereof. The application screens gas chromatography conditions and a pretreatment procedure of a test sample through a large number of experiments, screens four characteristic peaks of fatty acids, and realizes effective separation of four characteristic peaks of methyl myristate, methyl palmitate, methyl oleate and methyl stearate, with good peak shape, stable baseline and high resolution, thereby providing a basis for quality detection and control of fatty acid components in Zhi Yinyanghuo and preparations thereof. Through methodology investigation, the precision and intermediate precision of the instrument are good, and the repeatability, specificity and durability of the method are good, thereby meeting the determination requirements. The method can also be used to distinguish raw products and processed products, and is helpful for accurate medication in clinic.

The invention relates to the technical field of catalysis, and discloses application of a Cu-ZSM-22 catalyst in preparation of aviation kerosene components through hydrodeoxygenation coupling isomerization of methyl palmitate, and the application comprises the following steps: 1) carrying out reduction treatment on the Cu-ZSM-22 catalyst; 2) filling a reactor with the Cu-ZSM-22 catalyst, mixing methyl palmitate and a solvent, introducing hydrogen, and carrying out hydrodeoxygenation and hydroisomerization reaction to obtain a product containing hexadecane and an isocompound thereof; according to the Cu-ZSM-22 catalyst, a ZSM-22 molecular sieve is used as a carrier, and a copper species is used as an active component. The catalyst is used for preparing aviation kerosene components through methyl palmitate hydrodeoxygenation coupling isomerization, has the advantages of being low in cost, high in methyl palmitate conversion rate, high in long-chain alkane selectivity, high in product isomerization ratio and the like, and can effectively improve the low-temperature fluidity of the aviation kerosene components.

The application discloses application of methyl palmitate as an attractant for Eupithecia subnotata. The attractant comprises methyl palmitate solution configured by using n-hexane at a concentration of 0.1 ug / ml, and the attractant has the best attractant effect. The attractant is combined with a purple trapping device to attract Eupithecia subnotata, and the trapping of Eupithecia subnotata is the most efficient when the color and the reagent both have the best single-factor effect.

The present application belongs to the technical field of pet products, and specifically discloses cat facial pheromone, a preparation method thereof and application of the cat facial pheromone in improving cat stress reaction, which comprises the following components: thickening agent, D-panthenol, 1,2-hexanediol, isomeric alkanes, ethylhexyl glycerin, hydroxypropyl- β -cyclodextrin, pheromone, plant extract, polyhydric alcohol, and the balance of water; the pheromone comprises methyl palmitate, squalane, phytosterol isostearate and allantoin. The present application adopts methyl palmitate, squalane, phytosterol isostearate and allantoin as pheromone, constructs a bionic cat facial sebum pheromone system, adopts plant extract as a soothing component, and simulates the natural facial odor of cats to reduce the cat's psychological vigilance and effectively improve stress behaviors such as random urination, fighting and hiding.​

The invention discloses an immobilized enzyme reaction application, and particularly relates to a method for catalytically synthesizing vitamin A palmitate in a solvent-free system by utilizing immobilized lipase. Through molecular modification, the specific enzyme activity of the lipase double mutant AF-R296P / L330S is maximally improved by 9.47 times, and under the condition that no other solvent is added, the reaction can still be carried out by taking molten methyl palmitate as a catalytic medium. The immobilized lipase is prepared by using the lipase mutant with improved activity and taking macroporous adsorption resin as a carrier, can efficiently catalyze vitamin A acetate and methyl palmitate to generate the vitamin A palmitate, and has a good application prospect in the production of the vitamin A palmitate.

The disclosed biodiesel used in the CECL-109 method and the preparation method thereof comprise 7-10% of methyl palmitate, 20-24% of methyl erucate, 33-35% of methyl linoleate and 33-37% of methyl oleate, four materials are weighed according to the mass ratio of 100%, the preparation method is that the weighed materials are added into a beaker and then placed on a constant temperature magnetic stirrer for stirring, the temperature is adjusted to 20-30 DEG C, and the stirring is carried out for 20-40 min to obtain the required biodiesel. The biodiesel can realize the standard test of the antioxidant performance of the engine oil containing the biodiesel.

The invention discloses a preparation method of high-quality bio-based 1, 9-nonanediol, which comprises the following steps: sequentially carrying out transesterification reaction, sedimentation, fatty acid methyl ester refining, ozone oxidation cracking reaction, solvent recovery, esterification reaction, dimethyl azelate refining and hydrogenation reaction on raw material vegetable oil to obtain the high-quality bio-based 1, 9-nonanediol. Gradient and full-component utilization of vegetable fat raw materials is achieved, the fat-based part of triglyceride is used for producing high-quality bio-based 1, 9-nonanediol, and meanwhile byproducts such as methyl palmitate, methyl stearate, propionic acid, hexanoic acid and nonanoic acid can be produced; the glyceryl moiety of the triglyceride is used to byproduct a glycerol product. According to the present invention, the esterification reaction is adopted to reconstruct the ozone oxidation cracking reaction product, the azelaic acid monomethyl ester with the high boiling point is converted into the azelaic acid dimethyl ester with the low boiling point so as to achieve the efficient separation of the azelaic acid monomethyl ester and the saturated fatty acid methyl ester, the azelaic acid dimethyl ester is adopted as the raw material, and the hydrogenation reaction is performed to obtain the high-quality nonanediol product so as to substantially reduce the production cost.

The invention belongs to the technical field of traditional Chinese medicine analysis, and particularly relates to a construction method of a pokeberry root characteristic spectrum. According to the method disclosed by the invention, the phytolacca esculenta saponin A, methyl palmitate, linoleic acid and beta-sitosterol are used as common reference substances for the first time to construct the phytolacca esculenta characteristic chromatogram, so that the overall chemical characteristics and internal quality of the phytolacca esculenta medicinal material can be reflected more comprehensively and systematically, and the limitation of insufficient representativeness of single component content measurement is made up; systematic methodology verification shows that the established specific chromatogram method is high in precision, good in repeatability, high in stability and suitable for quality control of pokeberry root medicinal materials and products of the pokeberry root medicinal materials; according to the method, key parameters such as test sample preparation, chromatographic conditions and gradient elution procedures are specified in detail, the steps are clear, the conditions are controllable, and popularization and standardized application among laboratories are facilitated.

The application discloses application of methyl palmitate in preparation of a medicine for treating and / or preventing senility and related cognitive impairment, and belongs to the technical field of biological medicine. The application proves by a cell experiment that methyl palmitate can significantly inhibit D-galactose-induced SH-SY5Y cell senility, and effectively reduce the expression level of senility-related proteins P53 and P16. The application proves by a behavior experiment that methyl palmitate can significantly improve the cognitive index of a senility model mouse, shorten an escape latency, and effectively improve learning ability reduction, spatial memory decline and cognitive function impairment caused by senility. In addition, methyl palmitate can significantly enhance the long-term potentiation effect of the hippocampal CA1 region of the senility model mouse, and reverse senility-related synaptic transmission damage. The application discloses the application of methyl palmitate in resisting neural senility and improving senility-related cognitive impairment, and provides a new candidate molecule for preparing a medicine for treating neurodegenerative diseases.

This invention relates to the field of high-temperature alloy investment casting technology, specifically to a ceramic core plasticizer, its preparation method, and a ceramic core. The ceramic core plasticizer comprises, by weight percentage: 40-90 wt% paraffin wax, 5-37 wt% microcrystalline wax, 0.5-15 wt% lacquer wax, 0.2-4 wt% polybutene, and 0.2-4 wt% methyl palmitate. This solves the problem of low fluidity in existing plasticizers used for preparing ceramic cores.

The invention discloses a cold insulation phase change material and a fresh food packaging structure using the same, and belongs to a fresh food packaging material.The cold insulation phase change material is prepared from, by weight, 96%-97% of a phase change composition, 1.7%-1.9% of nano silicon oxide, 0.5%-0.7% of butyl hydroxy anisd, 0.3%-0.5% of polyethylene glycol, 0.1%-0.3% of poly (butylene succinate) and 0.4%-0.6% of a silane coupling agent; the phase change composition comprises methyl palmitate and ethyl stearate, and the mass ratio of the methyl palmitate to the ethyl stearate is (6-7): (3-4). By redesigning the formula of the phase-change material, accurate temperature control of 0.5-8 DEG C and latent heat of 188 + / -2 J / g can be achieved during application, diversified fresh-keeping requirements are met, and on the basis of a fresh food packaging structure, the formula of the phase-change material and the thickness of the cold insulation layer can be finely adjusted to adapt to storage and transportation of different types of fresh food; the phase change material composite layer can also be processed into packages in various forms.

This invention relates to the field of oil and gas field chemical agent preparation technology, and particularly to a sulfur deposition inhibitor for high-sulfur gas fields and its preparation method. The sulfur deposition inhibitor of this invention comprises the following components in parts by weight: 0.9-1.5 parts hexadecyltrimethylammonium chloride, 0.3-0.6 parts octadecyltrimethylammonium chloride, 4-6 parts cocamidopropyl betaine, 2.5-3.5 parts sodium α-alkenyl sulfonate, 1.5-2.2 parts sodium palmitate methyl sulfonate, 1.2-1.8 parts potassium carbonate, 0.6-1 parts magnesium chloride, and 83.4-89 parts solvent. This invention solves the problems of complex synthesis processes, low inhibition efficiency, high toxicity, and poor engineering adaptability of traditional sulfur inhibitors by adjusting the synergy and compatibility between inorganic salts and surfactants, making it suitable for large-scale application and promotion in high-sulfur gas fields.