30 results about "Solvent fractionation" patented technology

The invention provides operating the dry or solvent fractionation of oils and fats in a crystallizer comprising a crystallization vessel (1,2), an agitator, cooling means and a drive, wherein said drive provides said agitator with an oscillating motion, and/or a rotating motion around an axis, with the proviso that each point of said agitator moves at substantially the same linear speed.

The invention also provides a crystallizer comprising a crystallization vessel (1,2) having a polygonal cross-section, an agitator and a drive, wherein said drive provides said agitator with an oscillating motion, and wherein said agitator is not inclined to the moving direction.

[Problem] To provide an ethylene-α-olefin copolymer having high mechanical strength and good molding properties.

[Solution] Provided is an ethylene-α-olefin copolymer having a specific MFR, a specific density, and a specific molecular weight distribution, containing a suitable amount of a long-chain branching structure characterized by a branching index, and having a specific composition distribution structure characterized by solvent fractionation behavior.

[Problem] To provide an ethylene-α-olefin copolymer that is highly effective in improving the molding properties of polyolefin resins, improving the balance between impact strength and stiffness, and improving transparency. [Solution] Provided is an ethylene-α-olefin copolymer having a specific MFR, a specific density, and a specific molecular weight distribution, containing a suitable amount of a long-chain branching structure characterized by a branching index, and having a specific composition distribution structure characterized by solvent fractionation behavior.

The method belongs to a method for producing tetrahydropyrrole. The method comprises the following steps: taking 1,4-butyleneglycol, ammonia and water with the mol ratio of 1:1.3-2:0.4-3 as raw materials, heating and vaporizing to reach reaction temperature of 240-330 DEG C, introducing into a reactor at the weight space velocity of 0.6-0.7g/min under the protection of nitrogen, passing through a gas-phase fixed bed filled with an SO4/MxOy rare earth compound supported catalyst, performing catalytic reaction at the reaction pressure of 0-0.1MPa, condensing a reactant to obtain a solvent mixture, distilling and purifying the solvent mixture, and collecting a distillate with the temperature of 86-90 DEG C to obtain crude tetrahydropyrrole. In the method, the tetrahydropyrrole is synthesized by reaction in a low pressure state, a little water is added in the synthesis process to reduce difficulty in purifying and separating the product, and the method has the advantages of safety and high efficiency, simple production process, low production cost, energy conservation, easy wastewater treatment, easy environmental protection, and high raw material conversion rate and yield.

A method of solvent fractionation of a fat by which a high fat concentration, a rise in refrigerant temperature, and a reduction in operation time, etc. can be attained and fractions are efficiently produced at a low cost, characterized by rapidly cooling a feedstock fat dissolved in a solvent to a temperature higher by 1 to 20° C. than the crystallization temperature used in a crystallizer in the step prior to introduction of the feedstock fat into the crystallizer.

The present invention is based on the finding that stearin fats, obtainable by dry or solvent fractionation of sunflower high-stearic and high-oleic oils, optionally with seeding with tempered stearin crystals, have a high solid fat content at temperatures higher than 30° C., even higher than cocoa butter or other high saturated tropical fats with a similar disaturated triacylglycerol content due to the presence of disaturated triacylgiycerols rich in stearic acid, and improved melting point due to the presence of arachidic and behenic acids in these disaturated triacylgiycerols, being at the same time healthier that actual fats made from palm, palm kernel and coconut oils, or hydrogenated and trasesterified vegetable oils.

[Problem] To provide an ethylene-α-olefin copolymer that is highly effective in improving the molding properties of polyolefin resins and at the same time highly effective improving the balance between impact strength and stiffness.

[Solution] Provided is an ethylene-α-olefin copolymer having a specific MFR, a specific density, and a specific molecular weight distribution, containing a suitable amount of a long-chain branching structure characterized by a branching index, and having a specific composition distribution structure characterized by solvent fractionation behavior.

The invention relates to the field of refining processing of palm oil, and further relates to a method for preparing palm oil with low content of glycidyl ester and 3-MCPD ester. The method comprises: A, degumming palm oil; b, carrying out solvent fractionation on the palm oil subjected to degumming treatment in the step A, and then carrying out deodorization treatment to obtain grease with low diglyceride content; and C, refining the grease with low diacylglycerol content in the step B to obtain palm oil with low glycidyl ester content and low 3-MCPD ester content. The method effectively reduces the refining difficulty and reduces the refining cost.

Provided is a method for producing SOS hard butter containing at least 85 w/w% of 1,3-distearoyl-2-oleoylglycerol (SOS) among triglycerides by means of the solvent fractionation method, comprising the steps of: producing a lipid solution by using a solvent to dissolve a lipid starting material obtained via an enzymatic ester-exchange reaction; crystallising out and removing a high-melting-point fraction by maintaining the lipid solution at between 10 and 25 DEG C; and crystallising out and collecting a mid-melting-point fraction by maintaining the lipid solution, from which the high-melting-point fraction has been removed, at between 0 and 15 DEG C.

The present invention provides a method for detecting a phytol-free chlorophyll derivative in a sample, comprising a step of detecting a fluorescent signal associated with the phytol-free chlorophyll derivative, wherein a fluorescent signal associated with chlorophyll or a phytol-containing chlorophyll derivative in the sample is quenched. The method may be used for quantifying activity of chlorophyllases and related enzymes in a sample without solvent fractionation of substrate and product.

An integrated approach for utilizing waste products of 2G bio-refineries to fractionate the lignin of high purity. The present invention also provides a method of recycling of two waste products (2-G ethanol residue as the substrate (LRBR) and fusel oil/synthetic fusel oil (SFO) as one of the solvent) of the biorefineries in a beneficial manner to fractionate the lignin of high purity. The present method of separating high purity lignin comprises fractioning extractive-free lignin rich residue with a solvent, wherein the solvent is a mixture of SFO/Fusel oil and Formic acid. An optimized ratio of waste fusel oil and formic acid gave more than >85% yields of high purity lignin.

The invention relates to a process for separation of a processed vegetable fat (PVF), wherein said process comprises the steps of:

• • in a distillation step (DIS), distilling the processed vegetable fat (PVF) into a distillate part (DPT) comprising stearic and oleic acid and/or esters thereof, and a distilled vegetable fat (DVF);
  • in a first fractionation step (DFR), fractionating the distilled vegetable fat (DVF) into a first higher melting point fraction (FHF) being rich in tri-stearate triglycerides (StStSt, where St=stearic acid) and di-stearate diglycerides (StSt) and a first lower melting point fraction (FLF); and
  • in a second fractionation step, fractionating the first lower melting point fraction (FLF) into a second higher melting point fraction (SHF) being rich in 1,3-distearyl-2-oleyl-triglycerides (StOSt, where O=oleic acid), and a second lower melting point fraction (SLF) being rich in 1-stearyl-2,3-dioleyl-triglycerides (StOO) and trioleate-triglycerides (OOO) in a solvent fractionation process (SFR).

The invention furthermore relates to a vegetable fat product obtained from such process.

The invention provides an extraction method of whitening and freckle-removing purple perilla essential oil and extract. The extraction method comprises the following steps: crushing purple perilla; performing multi-gradient low-temperature low-pressure Soxhlet extraction treatment; performing filtration treatment; distilling to remove the solvent; fractionation treatment is carried out, the low-boiling-point fraction is essential oil, and the high-boiling-point fraction is extract. Compared with the prior art, the extraction method of the perilla essential oil and the extract provided by the invention adopts ethanol and water as solvents in the whole process, and is green, environment-friendly and pollution-free; in addition, the polarity of effective components of purple perilla is relatively high, so that the extraction efficiency can be effectively improved and the extraction time can be saved by compounding ethanol and water; the Soxhlet extractor principle is adopted, the extraction liquid flows back to the solvent kettle through the siphonic effect, the solvent can be repeatedly utilized, and finally the complete extraction effect can be achieved only through a small amount of solvent; finally, reduced-pressure low-boiling-point distillation is adopted, so that the temperature is reduced, the activity of economic components of purple perilla is reserved to the maximum extent, and the retention rate of the economic components is high.

Disclosed herein are a novel compound isolated from Ginkgo biloba and a method for isolating the novel compound from Ginkgo biloba. The method comprises: (1) extracting Ginkgo biloba with alcohol to obtain a crude extract; (2) subjecting the Ginkgo biloba crude extract to solvent fractionation using an organic solvent; (3) fractionating the solvent fractions by Sephadex column chromatography; and (4) fractionating the Sephadex fractions by silica gel column chromatography.

The invention discloses a method for preparing cocoa butter equivalent by the aid of 28-degree palm oil medium fractionation substances (POMF). The method includes steps of weighing a certain mass of the 28-degree palm oil medium fractionation substances (POMF) and a certain volume of acetone and mixing the 28-degree palm oil medium fractionation substances (POMF) and the acetone with one another according to a mass-volume ratio of 1:4-1:6 to obtain mixed solution; (2), heating the mixed solution until the temperature of the mixed solution reaches 40+/-1 DEG C and completely dissolving the 28-degree palm oil medium fractionation substances (POMF) in the acetone to obtain clear transparent mixed solution; (3), cooling the clear transparent mixed solution until the temperature of the clear transparent mixed solution reaches 8.0-9.0 DEG C and crystallizing the clear transparent mixed solution to obtain crystallized solution; (4), carrying out vacuum filtration on the crystallized solution and collecting solid fat with a small quantity of acetone; (5), carrying out reduced-pressure distillation on the collected solid fat and removing the acetone to obtain the cocoa butter equivalent (CBE). The method has the advantages that processes for preparing the cocoa butter equivalent are simple, and the cocoa butter equivalent (CBE) can be prepared by means of one-step solvent fractionation; the cocoa butter equivalent (CBE) prepared by the aid of the method has melting characteristics consistent with melting characteristics of cocoa butter, accordingly, a large quantity of the cocoa butter equivalent can be added into natural cocoa butter, and the cocoa butter equivalent also can be directly used for producing diversified chocolate products (CBE).