397results about "Fatty acid esterification" patented technology

The invention relates to the field of biodiesel catalytic materials, and particularly discloses a catalyst for kitchen waste oil, a preparation method and biodiesel. The catalyst for the kitchen waste oil is prepared from a Fe3O4-SiO2-Pr < 3 + > nano-particle carrier and a lipase solution, the catalyst is prepared from a Pr (NO3) 3 solution doped with Pr < 3 + > being 0.88-0.92 wt%, the lipase solution is a pseudomonas lipase solution with the concentration being 22-28 mg / mL, and the pH is 7.0; the preparation method comprises the following steps: preparing Fe3O4 nanospheres, coating the surfaces of the Fe3O4 nanospheres with SiO2 layers, dipping the Fe3O4 nanospheres in a Pr (NO3) 3 solution, carrying out calcination treatment to obtain a Fe3O4-SiO2-Pr < 3 + > nanoparticle carrier, placing the carrier in a lipase solution, carrying out adsorption fixation, and separating out the carrier to obtain the catalyst. The catalyst is used for processing biodiesel and has the advantages of being easy to recycle, high in loading capacity, low in activity loss and good in stability.

The invention relates to the technical field of rice bran processing, and discloses a rice bran degreasing and nutrition retention edible process synergistic treatment method which comprises the following steps: (a) in an NADES-aqueous solution medium, adding an immobilized catalyst A, and hydrolyzing ferulate bonds and phospholipids in rice bran at low temperature; (b) carrying out intermediate dehydration on the slurry obtained in the step (a) to reduce the water activity; (c) adding an immobilized catalyst B into the dehydrated slurry in the step (b), carrying out esterification reaction, and grafting free ferulic acid generated by hydrolysis to glyceride in situ; and (d) carrying out solid-liquid separation on the slurry obtained in the step (c) to obtain finished oil and finished powder. According to the method, an NADES medium is adopted to replace an organic solvent, the whole process is carried out at low temperature, degradation of heat-sensitive nutrient substances is avoided, and resource utilization of ferulic acid is achieved. The prepared functional rice bran oil is rich in feruloyl glyceride, total tocopherol and oryzanol, and is low in acid value and peroxide value.

The subject invention provides compositions and methods for reducing the carbon footprint of producing biofuels. Microbe-based soil treatment compositions are utilized to reduce greenhouse gas emissions resulting from the agricultural practices of producing feedstock crops.

The invention relates to the technical field of catalysts, and particularly discloses a Ni-Cu-CeO2 / ZrO catalyst for improving oxidation stability of biodiesel and a preparation method of the Ni-Cu-CeO2 / ZrO catalyst. The invention discloses a Ni-Cu-CeO2 / ZrO catalyst for improving oxidation stability of biodiesel. The Ni-Cu-CeO2 / ZrO catalyst comprises a carrier, an active component and an auxiliary agent, the carrier is a CeO2-ZrO2 composite oxide; the active components are Ni and Cu; ni accounts for 3-5 wt% of the mass of the catalyst, and Cu accounts for 1-3 wt% of the mass of the catalyst; the auxiliary agent is La2O3; the preparation method comprises the following steps: firstly preparing the CeO2-ZrO2 carrier by adopting a coprecipitation method, then impregnating nickel nitrate, copper nitrate and lanthanum nitrate in an isopyknic manner, and then carrying out stepped roasting to obtain the catalyst. The catalyst has high catalytic activity and stability, unsaturated fatty acid ester in biodiesel can be removed, the oxidation stability of the biodiesel is improved, and the cost of the catalyst is lower than that of a noble metal catalyst.

The invention relates to the technical field of catalysis, and particularly discloses a method for preparing pure biodiesel from kitchen waste oil through enzyme catalytic desulfurization. The method comprises the following steps: adding a Sm2O3 / ZrO2 solid acid catalyst into the kitchen waste oil for pretreatment to obtain pretreated waste oil, and then adding lipase into the pretreated waste oil for catalyzing transesterification to obtain the biodiesel. According to the method for preparing the pure biodiesel from the kitchen waste oil through enzyme catalytic desulfurization, in-situ esterification and synchronous desulfurization of free fatty acid can be completed in a single-step reaction, the stability of a conversion reaction is effectively improved, the production process is simplified, and the conversion efficiency of preparing the biodiesel from the kitchen waste oil is improved.

In the present invention, a novel synthesis method for fatty acid methyl esters and fatty acid ethyl esters is provided. More specifically, a fatty oil composition obtained from dry insects by mechanical treatment is reacted with an aliphatic alcohol in the presence of an alkali metal alkoxide, such as methoxide or ethoxide, to obtain fatty acid methyl esters (FAME) or fatty acid ethyl esters (FAEE).

The present invention relates to light-colored corn wax oxides, to a process for their preparation, and to their use for agricultural or forestry purposes, as additives in plastic processing, in care products, in printing inks and / or in paints, and to saponified or esterified corn wax oxides prepared by saponification or esterification of the said corn wax oxides.

The present invention relates to a confectionery product comprising 20% to 70% by weight of a sweetener; and 20% to 70% by weight of a plant-based fat phase; wherein the plant-based fat phase has from 1.0% to 10.0% by weight of total lauric acid (C12: 0) and myristic acid (C14: 0); and from 20.0% to 70.0% by weight of total palmitic acid (C16: 0) and stearic acid (C18: 0); the percentage of acid is an acid bound as an acyl group in the glyceride of the plant-based fat phase and based on the total weight of C8 to C24 fatty acids; total palmitic acid (C16: 0) and stearic acid (C18: 0) in the second position of the triglycerides, which accounts for at least 1.0% of the percentage of total palmitic acid (C16: 0) and stearic acid (C18: 0) in the triglycerides of the plant-based fat phase (Sn-2 total palmitic acid and stearic acid%); up to 10.0% by weight of a total CN32 triglyceride, CN34 triglyceride, CN36 triglyceride, CN38 triglyceride, and CN40 triglyceride; the plant-based fat phase is based on total triglycerides present in the plant-based fat phase. The invention also relates to a method for preparing said confectionery product.

The present application provides a kind of waste oil transesterification reaction catalytic system, belong to biomass refining field.The preparation steps of catalyst include: in the solution containing Ni (NO3) 2 And Fe (NO3) 3 Carboxymethyl cellulose is added, then urea is added, reaction is carried out, and nano-porous NiFe2O4 is obtained, MgCl2 / ZnCl2 Solution and KOH / K2CO3 Solution are added to NiFe2O4 water dispersion, reaction is carried out, solid product is collected, calcination is carried out, and catalyst is obtained.Catalyst is added to waste oil to carry out catalytic reaction.The present application adopts carboxymethyl cellulose to regulate the crystal form, grain size and dispersity of catalyst carrier, and the obtained solid magnetic catalyst can improve the production efficiency of waste oil for preparing biodiesel.The catalyst has high active site, fast reaction rate, mild reaction condition, can reduce reaction energy consumption and production cost.The catalyst also has good magnetic property, is convenient for recovery.The catalyst has good stability, improves the controllability and stability of reaction.

An object is to provide an oil and / or fat with low trans fatty acid content. The oil and / or fat reduces graining in chocolate-based products. The oil and / or fat is a randomly interesterified oil in which in constituent fatty acid composition, a content of a saturated fatty acid having from 12 to 18 carbons is 20 mass% or more, and in the constituent fatty acid composition, when X denotes the content of the saturated fatty acid having from 12 to 18 carbons and Y denotes a content of a saturated fatty acid having from 12 to 14 carbons, Y / X is 0.2 or more and 1.0 or less.

The utility model relates to the technical field of deep processing of grease, in particular to a transesterification grease treatment device which comprises a separation device and a vacuum heating device, a funnel is arranged at a top inlet of the separation device and penetrates through the separation device, and the lower end of the funnel is suspended; a first outlet and a second outlet are formed in the side wall of the separation device, and the separation device is connected with a vacuum heating device through the first outlet; a heating structure, a third outlet and a fourth outlet are arranged in the vacuum heating device, and the third outlet and the fourth outlet are arranged on the side wall of the vacuum heating device. According to different conditions of the oil-water separation layer, the flowing-out position of the grease can be accurately adjusted, the oil-water separation accuracy is improved, meanwhile, impurities such as water and methyl alcohol in the grease are effectively removed, and the purity of the grease is remarkably improved.

The invention relates to the production of a triglyceride with Palmitic acid (P) in the middle position (XPX). A first transesterification process is used to produce a vegetable fat composition rich in palmitic acid and said intermediate composition is then further processed to produce triglycerides having a high proportion of its palmitic acid in the middle position.

Edible, pourable, fat-containing product, preferably in the form of a water-in-oil emulsion or a full fat product, comprising 40 to 99.9 wt. % liquid vegetable oil; 0.1 to 10 wt. % of hard stock fat; water up to 100 wt. %, wt. % calculated on the total weight of the product, wherein the hard stock fat is free from palm or palm-derived fats or fat fractions; free from hydrogenated fats or fat fractions and has a C22:0 (behenic acid) content of at least 10 wt. %, wt. % calculated on the amount of fatty acids in the hard stock.

The invention of a process of producing biofuel using microorganisms and carbon dioxide extracted from industrial chimneys includes the separation and purification of carbon dioxide utilizing absorption and disposal towers and the use of solvents such as monoethanolamine. The purified CO2 is then injected into the cyanobacteria cultivation system in shallow pools with insulated walls and a glass or polycarbonate coating. Through aeration and mechanical stirring, photosynthesis and the growth of cyanobacteria, such as the Synechocystis sp. PCC 6803, is maximized. The cyanobacteria biomass is separated using centrifugation, dried, and ground. The lipids present in the biomass are extracted using solvents such as hexane or methanol under controlled conditions. The extracted lipids are then converted into biodiesel in a chemical reactor through a transesterification process with alcohol and a catalyst, while glycerol is collected as a by-product for use in the cosmetic and personal care industries.

Use of a compound having the formula (1), (2), (3), or (4) or combinations thereof, for providing a source of butyrate with improved organoleptic properties wherein R1, R2, R3, R4, R5 and R6 are independently a long chain fatty acid having between 16 and 20 carbons.

The loop reaction tower comprises a tower body and a circulating device, and the tower body is sequentially provided with a heavy phase outlet, a feeding port and a light phase outlet from bottom to top; the two circulating devices are sequentially communicated with the tower body from bottom to top and are arranged between the light phase outlet and the heavy phase outlet, and the feeding ends of the circulating devices are positioned above the discharging ends of the circulating devices. Compared with the prior art, the loop reaction tower provided by the invention is provided with two sets of circulating devices, two times of circular reaction and two times of settling separation can be completed in the tower body, the technical effects of two reaction towers and a settling separation tower are realized, and the equipment cost and the occupied area of the equipment are greatly reduced.

The invention relates to a caramel composition comprising a dairy milk source and / or a plant-based milk source; a carbohydrate; and a plant-based fat composition wherein the plant-based fat composition has: at most 40.0% by weight of oleic acid (C18:1); and from 17.5% to 49.5% by weight of total palmitic acid (C16:0) and stearic acid (C18:0); said percentages of acid referring to acids bound as acyl groups in glycerides of the plant-based fat composition and being based on the total weight of C8 to C24 fatty acids; a percentage of total lauric acid (C12:0) and myristic acid (C14:0) on the second position of triglycerides out of total lauric acid (C12:0) and myristic acid (C14:0) (Sn-2 total lauric acid and myristic acid %) in the triglycerides of the plant-based fat composition of from 30.0% to 55.0%; at most 30.0% by weight of CN54 triglycerides; based on total triglycerides present in the plant-based fat composition. The invention also relates to a process for preparing a caramel product, a caramel product and use of the caramel product.

The present invention addresses the problem of providing: an oil or fat for chocolates, which has bloom resistance at a level similar to conventional CBE, and in which the change in viscosity in a tempering process is small; and a chocolate using the oil or fat. The present invention preferably addresses the problem of further providing: an oil or fat for chocolates, which has good tempering properties under wide range of tempering conditions; and a chocolate using the oil or fat. The problems can be solved by an oil or fat for chocolates, which satisfies all of requirements (A)-(D). (A): The St2O triglyceride content is 10-50 wt%. (B): The ratio of the StStO triglyceride content to the St2O triglyceride content is at most 10 wt%. (C): The P2O triglyceride content is at least 3 wt%. (D): The ratio of the PPO triglyceride content to the P2O triglyceride content is at least 23 wt%.

The present invention relates to a fat composition comprising at least 30 wt% of stearic acid (C18:0) and at least 45 wt% of saturated fatty acids (SAFA); and wherein the fat composition comprises 1.0 to 8.0 wt% of SSS triglycerides and at most 10.0 wt% of UUU triglycerides, and the weight ratio of S2U triglycerides to SSS triglycerides of the fat composition is 6.0 to 20.0 and the weight ratio of S2O triglycerides to S2L triglycerides is at most 30.0; wherein S is a saturated fatty acid, U is an unsaturated fatty acid, O is oleic acid and L is linoleic acid. The present invention further relates to a fat blend comprising the fat composition as hard stock, wherein the fat blend is further used in a water-in-oil emulsion product, such as a margarine or a spread.

A method can include receiving an oxygenate sample, fractioning the oxygenate sample into one or more fractions, and separating the fractions (e.g. using FAME fractionation, FAEE fractionation, crystallization, solvent extraction, or other similar methods). The fractions can optionally be separated independently. The method can optionally include esterifying carboxylic acids separated from the fractions with glycerol and deodorizing the glycerides.

A non-hydrogenated fat composition comprises: from 3.2% to 10% by weight of total caprylic acid (C8:0) and capric acid (C10:0); from 13% to 32% by weight lauric acid; and from 20% to 45% by weight stearic acid (C18:0) fatty acid residues; the percentages of acids referring to acids bound as acyl groups in glycerides in the fat composition and being based on the total weight of C8 to C24 fatty acids; and from 7% to 15% by weight CN46 triglycerides; from 4% to 30% by weight CN54 triglycerides; and from 15% to 28% by weight of total CN42 triglycerides and CN44 triglycerides; the percentages of triglycerides referring to the total triglycerides present in the composition.

The invention relates to the technical field of biodiesel, in particular to high-calorific-value biodiesel based on a modified formula and a preparation method thereof.The preparation method comprises the following steps that S1, catering waste grease is pretreated, and pretreated catering waste grease is obtained; s2, carrying out esterification treatment on the pretreated catering waste grease, and adopting a composite treatment agent in the treatment process to obtain a crude product; s3, the crude product is subjected to catalytic cracking quality improvement, and a cracking product is obtained; s4, carrying out hydrogenation saturation treatment on the cracking product to obtain a mixed alkane product; and S5, carrying out purification and fractionation on the mixed alkane product to obtain the high-calorific-value biodiesel. According to the invention, after oil and alcohol are adsorbed into the spaces, the concentration of reactants is locally improved, and the reactants are limited around acidic sites, so that the reaction efficiency is greatly improved, the conversion efficiency of the biodiesel is effectively improved, and the calorific value performance of the biodiesel is further improved.

The application discloses a solid-phase preparation method of sulfonated chitosan membrane and application of the sulfonated chitosan membrane in catalytic biodiesel preparation, and the sulfonated chitosan membrane is prepared by the following steps: chitosan powder is suspended in a dispersant in which a sulfonating agent is dissolved to perform a sulfonating reaction, sulfonated chitosan powder is obtained through solid-liquid separation, the sulfonated chitosan powder is dissolved in a membrane solvent to prepare a casting membrane liquid, the casting membrane liquid is naturally cast on a glass surface to form a membrane, and the sulfonated chitosan membrane is obtained after drying and removing the membrane solvent. The sulfonated chitosan membrane is added into a mixed solution of fatty acid and methanol, and after stirring and heating for a period of time, the sulfonated chitosan membrane is taken out, and biodiesel is obtained after removing methanol from the solution. The sulfonated chitosan membrane prepared by the application has the advantages of fast mass transfer rate, high catalytic efficiency and easy separation, and under the conditions of an alcohol / oil ratio of 10:1, a reaction temperature of 65 DEG C, a catalyst dosage of 5wt%, and a reaction time of 3h, the esterification rate reaches 92.29%. Under the same conditions, the esterification rates of powdered chitosan and commercially available macroporous ion exchange resin are 57.73% and 33.0% respectively.

To provide a composition for use in improving or maintaining gastrointestinal health.SOLUTION: Provided is a composition comprising a compound having formula (1), (2), (3), or (4), or a combination thereof, wherein R1, R2, R3, R4, R5, and R6 are independently a long chain fatty acid having 16 to 20 carbons.SELECTED DRAWING: None

The present application relates to the technical field of biodiesel, in particular to a clean and environment-friendly biodiesel and a preparation method thereof, comprising the following raw materials: oil and fat raw material, methanol, catalyst, and composite additive; the oil and fat raw material is prepared after pretreatment of oil and fat crude material; the composite additive is prepared from cumulite powder and a treating agent, and the cumulite powder is pretreated before preparation of the composite additive. In the present application, the treating agent prepared from glycyrrhiza polysaccharide derivative contains hydrophilic and lipophilic groups and has surface activity; after modification on the surface of cumulite powder, it can improve the compatibility and dispersibility between oil and fat and methanol, increase the reaction interface, make the transesterification reaction more sufficient and faster, help to reduce the residues of unreacted substances and by-products, and further improve the combustion and environmental protection of the biodiesel.

The present invention lies in the field of microbial fatty acid / lipid / oil production from lignocellulosic feedstock / material / biomass, in particular from lignocellulose degradation products like lignocellulose hydrolysates. The present invention relates to a method of producing an oleaginous yeast strain adapted to a lignocellulose medium. The present invention further relates to an oleaginous yeast strain adapted to a lignocellulose medium and produced by the method of the invention and to an oleaginous yeast strain adapted to a lignocellulose medium, said strain being characterized by a particular RNA expression profile (showing, for example, an activated metabolic stress response RPOS). The present invention further relates to a method of producing oleaginous yeast cells, to a method of producing fatty acids and / or lipids, and to a method of producing (vegan) nutraceuticals / nutritional supplements or petroleum replacers. The present invention further relates to microbial methods for conversion of lignocellulosic hydrolysates using oleaginous yeast, in particular for producing oleaginous yeast cells, fatty acids, lipids, oils, (vegan) nutraceuticals / nutritional supplements and / or petroleum replacers.

The present invention relates to a meat substitute product comprising a texturized protein ingredient and an emulsion that is comprising a binding agent, a liquid oil, water and a powdered vegetable fat having that is a randomly interesterified and is having fatty acid moiety comprising saturated fatty acids with a carbon chain length of 12 to 22 (C12-C22), and having a ratio of saturated fatty acids with a carbon chain length of 12 and 14 (C12-C14) over saturated fatty acids with a carbon chain length of from 16 to 22 (C16-C22) of from 0.30 to 1.00, and wherein the emulsion is present in an amount of from 20 to 50 wt. %, from 25 to 45 wt. %, or from 30 to 40 wt. % on total weight of the meat substitute product. It further relates to the process for preparing the meat substitute product.

The invention relates to a method of producing an ester of a fatty acid and a C1-C4 alcohol, comprising successive steps of: cultivating cells of a microalga strain on a growth medium, harvesting the cultivated cells and concentrating them to obtain a wet cell pellet, suspending said wet cell pellet in an hydroalcoholic solution comprising said C1-C4 alcohol, incubating the cell suspension thus formed so as to form said ester of a fatty acid and a C1-C4 alcohol by transesterification and / or esterification of lipids produced by the microalga cells catalyzed by endogenous enzymes of said cells, and recovering said ester of a fatty acid and a C1-C4 alcohol from said cell suspension. The growth medium can advantageously be a dark fermentation effluent.