Organic Solvent Extraction Patents (Class 554/12)
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Patent number: 7156981Abstract: A process for the producing edible protein-containing meal for human and animal consumption and high quality food grade oils from oil seed using iodotrifluoromathane as the solvent is shown. The meal has a significantly improved level of dietary available (absorbable) protein. The process involves the preparation of protein isolates by a procedure which is conducted at room temperature, thus decreases protein degradation and denaturing which is caused by elevated temperatures. The process also provides for extraction of substantially all oils and fats, which interfere with the formation of the protein micelle, from the protein meal providing a cleaner, purer product with high levels of absorbable protein. Such protein isolates can then be used as such or added to formulated foods in order to increase the total protein content of that food. The protein produced and the oils recovered have compositions which are also unique and unobtainable by prior processing methods.Type: GrantFiled: April 26, 2002Date of Patent: January 2, 2007Assignee: Bio Extraction LimitedInventors: Peter F. Wilde, Ronald E. Skinner, Richard F. Ablett
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Patent number: 7148366Abstract: A process for removing oil from an agricultural substrate, including a dry grind corn. An ethanol solution with a concentration in the range of from about 90% to about 100% ethanol is mixed with the dry grind corn in a ratio of from about 10:1 to about 1:1 to form an extraction solution including the ethanol solution, oil, and corn solids. The extraction solution is separated into the corn solids and a filtrate, the filtrate including the ethanol solution and oil. The filtrate is membrane filtered, including nanofiltration, to restrain an oil concentrate from the filtrate and pass a permeate of the ethanol solution. The oil contained within the oil concentrate is purified.Type: GrantFiled: September 9, 2005Date of Patent: December 12, 2006Assignee: The Board of Trustees of the University of IllinoisInventor: Munir Cheryan
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Patent number: 7008528Abstract: A process for continuously extracting oil from a solid or liquid oil-bearing material comprises (a) removing air from the extraction system, (b) introducing an inert gas into the extraction system at a pressure sufficient to maintain a normally gaseous solvent in liquid state, (c) introducing an oil-bearing material into a silo, (d) passing the oil-bearing material from the to a jet pump mixing device, (e) introducing a liquified normally gaseous solvent into the jet pump mixing device, (f) mixing the oil-bearing material and the solvent in the jet pump mixing device for a time sufficient to permit complete wetting of oil-bearing material by the solvent to form a mixture, (g) heating the mixture to near supercritical conditions; (h) passing the mixture through an extractor having a screw conveyor adapted to rotate at a first rpm range and a centrifugal drum adapted to rotate at a second rpm range, (i) treating the mixture within the extractor in such a manner that supercritical temperature and pressure are atType: GrantFiled: March 21, 2002Date of Patent: March 7, 2006Inventors: Allen R. Mitchell, Louis E. Routier, III
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Patent number: 7002029Abstract: A process for solvent extraction of oils, in an extraction chamber, comprises the formation of a solvent mist with significant adiabatic cooling, whereby a pressure difference between the solvent inlet and outlet of the extraction chamber drives the solvent mist through the raw oil bearing. The solvent is fed to the extraction chamber at pressures exceeding atmospheric pressure, and the outlet of the extraction chamber is subject to a partial vacuum. An apparatus for solvent extraction comprises an extraction chamber for receiving oil bearing raw material therein, said extraction chamber comprising a solvent spray injection system connected via an inlet to a high pressure solvent feed circuit portion, said extraction chamber further connected via an outlet to a low pressure circuit portion connected to a gas recovery vacuum pump system.Type: GrantFiled: January 17, 2002Date of Patent: February 21, 2006Assignee: Extractis International Ltd.Inventor: John Henry Davis
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Patent number: 6924381Abstract: A solvent extraction free, process for producing refined soybean oil that is high in calcium and/or magnesium is described in which mechanically extracted crude soybean oil is subjected to a two-stage process to separate hydratable and nonhydratable phospholipids. In the first stage, the crude oil is intimately mixed with water or with a weakly acidic aqueous solution, e.g., a aqueous solution of citric acid or a similar organic acid, to form gums of the hydratable phospholipids. After removing the gums from the oil, e.g., by centrifuging, the oil from the first degumming is intimately mixed with a weakly basic solution, e.g., an aqueous solution of sodium hydroxide or sodium metasilicate, to produce soapstock and reduce the magnesium and calcium in the oil to less than 100 ppm, followed by separation of the soapstock, e.g., by centrifuging. Free fatty acids are then removed through physical refining.Type: GrantFiled: December 24, 2003Date of Patent: August 2, 2005Assignee: Carolina Soy Products, LLCInventor: Robert B Dawson
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Patent number: 6860998Abstract: The invention relates to a process for extracting fixed and mineral oils, and/or essential oils, from materials using a process of solvent extraction which is performed under pressure. The solvent is iodotrifluoromethane or iodotrifluoromethane in combination with a co-solvent. The invention also relates to an apparatus for performing the extraction of fixed and mineral oils, and/or essential oils. Substantial reductions in or elimination of the normally high latent heat of solvent evaporation may also be achieved simply by raising or lowering the temperature of or simply by adding or removing “sensible” heat from the solvent at appropriate points during its re-circulation.Type: GrantFiled: August 4, 2000Date of Patent: March 1, 2005Assignee: Naturol LimitedInventor: Peter Frederick Wilde
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Patent number: 6815553Abstract: The invention provides methods for separating outer birch bark from inner birch bark. The invention also provides methods for isolating betulin; lupeol; betulinic acid; 9,10-epoxy-18-hydroxyoctadecanoic acid; 9,10,18-trihydroxyoctadecanoic acid; polyphenolic polymers and fatty acids from birch bark.Type: GrantFiled: February 6, 2002Date of Patent: November 9, 2004Assignee: Regents of the University of MinnesotaInventors: Pavel A. Krasutsky, Robert M. Carlson, Vitaliy V. Nesterenko, Igor V. Kolomitsyn, Chris F. Edwardson
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Patent number: 6802977Abstract: The present invention relates to a method for obtaining a purified solid powder from highly concentrated, semi-liquid, high viscous solutions containing one or more solutes and a first solvent. The method comprises contacting the highly concentrated solution with a second solvent under high shear mixing, wherein the second solvent is miscible with the first solvent and wherein the solute has very low solubility or no solubility at all in the second solvent. Thereby a suspension of purified fine particles is obtained which can be easily separated to obtain a fine powder of the solute.Type: GrantFiled: April 1, 2002Date of Patent: October 12, 2004Assignee: Oladur Ltd.Inventors: Uriel G. Cegla, Moshe Shuster
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Patent number: 6800316Abstract: The invention concerns a method for fractionating cooking oil, in particular frying oil, using a solvent with supercritical pressure. The method is characterized in that it comprises steps which consist in: contacting, in a mixer, the cooking oil with the solvent with supercritical pressure; separating the resulting mixture into two phases in a decanter, namely a light phase and a heavy phase; decompressing the light phase and the heavy phase so as to recuperate the solvent, and the treated oil and the treatment residues respectively.Type: GrantFiled: December 13, 2001Date of Patent: October 5, 2004Inventors: Michel Perrut, Wieslaw Majewski
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Patent number: 6743930Abstract: The invention provides a kernel oil extracted from plant kernels, comprising triglyceride 90-99.9%, diglyceride 0.01-5%, monoglycerides 0.01-3%, sitosterol 0.1-2.5% and cyclolanosterol 0.01-1%. The invention also provides two methods for the extraction of said kernel oil, the pharmaceutical compositions and the uses thereof.Type: GrantFiled: April 16, 2002Date of Patent: June 1, 2004Inventor: Dapeng Li
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Patent number: 6713512Abstract: This invention provides a novel antioxidant, kombic acid or a derivative thereof, obtained from crude kombo butter suitable for preventing oxidation of various organic materials. In particular, the invention relates to the use of kombic acid as an antioxidant in the treatment of cancer, the inhibition of proliferation of cells, and in lowering levels of cholesterol both in vivo and in vitro.Type: GrantFiled: November 21, 2002Date of Patent: March 30, 2004Inventor: Edward C. Leonard
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Patent number: 6673952Abstract: The invention concerns a method for extracting and fractionating fats contained in a raw material, characterized in that it comprises at least a step which consists in using an extraction solvent consisting of at least a hydrofluoroether of general formula (I): CnF2n+1OCmH2m+1, wherein: n ranges between 3 and 6 and m ranges between 1 and 5 and at least a separation step enabling to obtain a raw extract of fats rich in unsaponifiable substances and optionally, in free fatty acids and a insoluble extraction fraction.Type: GrantFiled: September 9, 2002Date of Patent: January 6, 2004Assignee: ExtractiveInventors: Benoit LeMaire, Michel Surbled, Jacques Zwegers, Bernard Mompon
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Patent number: 6667015Abstract: An apparatus for extracting biomass includes a closed loop circuit having an extraction vessel (11), an evaporator (12), a compressor (13), a condenser (14) and (optionally) a storage reservoir (15) operatively connected in series. A pumped recirculation loop (20) recirculates a portion of the output of the extraction vessel (11) for further contact with biomass. One or more modifiable resistances to flow (12;23) control the flow of solvent around the recirculation loop (20) and the main closed loop.Type: GrantFiled: September 5, 2000Date of Patent: December 23, 2003Assignee: Ineos Fluor Holdings LimitedInventors: Robert E. Low, Stuart Corr, Frederick Thomas Murphy, James David Morrison
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Patent number: 6610867Abstract: Corn oil and corn meal obtained from corn are included in useful products. The corn oil is extracted from the corn to form the corn meal. The corn grain process generally includes the steps of cracking corn grain having a total oil content of from about 3% by weight to about 30% by weight and extracting a corn oil from the cracked corn grain. The corn oil is useful for making nutritionally enhanced edible oil or cooking oil, lubricants, biodiesel, fuel, cosmetics and oil-based or oil-containing chemical products. The extracted corn meal is useful for making enhanced animal feed rations, snack food, blended food products, cosmetics, and fermentation broth additive.Type: GrantFiled: January 15, 2002Date of Patent: August 26, 2003Assignees: Renessen LLC, Cargill, Inc.Inventors: Neal T. Jakel, Doug Kotowski, Joel Ingvalson, Michael J. Beaver, James F. Ulrich, Francis Amore, Michael J. Tupy, Eugene J. Fox, Alexander Patist, Patrick Adu-Peasah
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Publication number: 20030130532Abstract: The invention concerns a method for extracting usaponifiable matters from a vegetable oil comprising at least a saponification step whereby the oil is transformed into a hydroalcoholic solution, an step for extracting the hydroalcoholic solution with an organic solvent such as chloro-1-butane, preferably the treated vegetable oil is avocado or soya oil.Type: ApplicationFiled: July 12, 2002Publication date: July 10, 2003Inventors: Sandrine Bardet, Jacques Legrand, Antoine Piccirilli
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Patent number: 6589422Abstract: Discloses is apparatus for extracting biomass from a biomass supply, including a hollow vessel in which is established a countercurrent flow of biomass in the form of liquid or particles of biomass entrained in a liquid and solvent. The vessel includes an outlet for a solvent/extract mixture at a first vessel side and an outlet for biomass at a second vessel side. The solvent/extract mixture outlet is coupled to a closed loop circuit that includes at least a separator which encompasses a condenser having first and second stages connected in series with the second of such stages operating at a lower temperature than the first stage and both stages supplying substantially uncontaminated solvent to the hollow vessel.Type: GrantFiled: December 18, 2000Date of Patent: July 8, 2003Assignee: Ineos Fluor Holdings LimitedInventor: Robert Elliott Low
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Patent number: 6569480Abstract: A process for extracting a fat from a feedstock (e.g., chocolate liquor), includes mixing the feedstock with a liquefied gas solvent (e.g., butane), filtering, washing the retentate with additional solvent, refiltering, drying, granulating, aerating the granulate, and separating the fat from the solvent in the original filtrate. The mixing, filtering, washing, refiltering, drying, and granulating are conducted under an atmosphere consisting essentially of the solvent vapor. An improved solvent extraction process includes repeatedly loading and unloading an extractor with solvent and feedstock to extract fat from the feedstock, wherein throughout loading, extracting, unloading and repeating: (a) a pressure in the extractor is continuously maintained above atmospheric pressure; (b) the extractor is continuously maintained under an oxygen-free atmosphere; and/or (c) the extractor is continuously maintained under an atmosphere consisting essentially of a vapor of the solvent.Type: GrantFiled: April 30, 2001Date of Patent: May 27, 2003Inventors: Donald R. Hall, Michael R. Hall, Michael Moser, L. V. Benningfield, Jr.
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Patent number: 6551642Abstract: A process and system for extracting a solute from a solid material, such as oil from oil-bearing foodstuffs, utilize a substantially tubular membrane filter to separate a mass of the extracting medium and the foodstuffs into a miscella and foodstuffs of reduced oil content. In a batch or continuous process, after each extracting stage, the mass from the extraction vessel is conveyed to a membrane filter, which has pores along its cylindrical walls suitably sized to allow a miscella to pass as the permeate, while causing the foodstuffs of reduced oil content to be conveyed axially along the tubes and out of its ends as the retentate. In a continuous process, extractor cells, or stages, consisting of an extraction vessel, pump, and membrane filter, are used in sequential stages, preferably using a miscella from the subsequent stage as the extracting medium. In a batch process, miscella storage tanks may be used to store miscella from the final stage for use in the next batch.Type: GrantFiled: March 8, 2001Date of Patent: April 22, 2003Assignee: CocoTech, Inc.Inventor: Richard B. Trout
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Patent number: 6545146Abstract: Methods of removing a lower alkyl alcohol from a polyester mixture of polyol fatty acid polyester and lower alkyl alcohol comprise (a) contacting the polyester mixture with a stripping mixture comprising an inert stripping gas, up to about 10,000 ppm lower alkyl alcohol and up to about 2000 ppm oxygen, wherein at least a portion of the lower alkyl alcohol is transferred from the polyester mixture to the stripping mixture, thereby increasing the concentration of lower alkyl alcohol in the stripping mixture, and (b) separating the stripping mixture from the polyester mixture.Type: GrantFiled: June 30, 2000Date of Patent: April 8, 2003Assignee: The Procter & Gamble Co.Inventors: James Earl Trout, Gary Allen Busch
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Publication number: 20020193617Abstract: Corn oil and corn meal obtained from high oil corn are included in useful products. The corn oil is extracted from the high oil corn to form the corn meal. The corn oil generally comprises levels of nutrients not found in commercially available corn oils, since most or all of the corn grain, rather than just the germ, is exposed to the extraction process. The corn grain generally includes the steps of flaking corn grain having a total oil content of at least about 6 wt. % and extracting a corn oil from the flaked corn grain. The corn oil is useful for making nutritionally enhanced edible oil or cooking oil, lubricants, biodiesel, fuel, cosmetics and oil-based or oil-containing chemical products. The extracted corn meal is useful for making enhanced animal feed rations, snack food, blended food products, cosmetics, and fermentation broth additive.Type: ApplicationFiled: August 10, 2001Publication date: December 19, 2002Inventors: James F. Ulrich, Neal T. Jakel, Troy T. Lohrmann, Douglas C. Kotowski, Patrick Adu-Peasah, Joel Ingvalson, Brent Aufdembrink, Michael J. Tupy, Eugene J. Fox, Michael J. Beaver, Francis Amore, Stephan C. Anderson, Beth R. Anderson
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Patent number: 6432469Abstract: A conjugated linoleic acid is prepared in industrial scale as a hydrolyzed isomerized product for blending into bulk domestic animal feeds. The CLA-containing isomerized hydrolyzed oil from sunflower and safflower seeds has sufficiently low levels of phosphatides and sterols to permit crude processing and incorporation into feeds of an undried, undistilled oil fraction without toxic or unpalatable effects.Type: GrantFiled: October 19, 2001Date of Patent: August 13, 2002Assignee: Natural CorporationInventor: Jan Remmereit
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Patent number: 6392070Abstract: The invention provides methods for separating outer birch bark from inner birch bark. The invention also provides methods for isolating betulin; lupeol; betulinic acid; 9,10-epoxy-18-hydroxyoctadecanoic acid; 9,10,18-trihydroxyoctadecanoic acid; polyphenolic polymers and fatty acids from birch bark.Type: GrantFiled: August 10, 1999Date of Patent: May 21, 2002Assignee: Regents of the University of MinnesotaInventors: Pavel A. Krasutsky, Robert M. Carlson, Vitaliy V. Nesterenko
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Patent number: 6388110Abstract: A commercial-scale method for processing corn grain includes the steps of flaking corn grain having a total oil content of at least about 8% and extracting a corn oil from the flaked corn grain. Such a method can be effectuated by processing the high oil corn grain using equipment typically used to process soybeans and other similar oilseed types. In this way, processing plants that flake oilseeds can be used to extract corn oil from corn.Type: GrantFiled: August 10, 2000Date of Patent: May 14, 2002Assignee: Cargill, IncorporatedInventors: James F. Ulrich, Stephan C. Anderson, Ian Purtle, Gary Seymour
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Patent number: 6355816Abstract: This invention uses acetone/water mixtures at various concnetration and temperatures as a cost effective method for recoveing soy saponins of high purity from soybean-derived materials, while also affording an economical means of recovering soy isoflavones as a by-product.Type: GrantFiled: November 27, 2000Date of Patent: March 12, 2002Assignee: Wiley Organics, Inc.Inventor: Thomas Dobbins
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Patent number: 6344230Abstract: A conjugated linoleic acid is prepared in industrial scale as a hydrolyzed isomerized product for blending into bulk domestic animal feeds. The CLA-containing isomerized hydrolyzed oil from sunflower and safflower seeds has sufficiently low levels of phosphatides and sterols to permit crude processing and incorporation into feeds of an undried, undistilled oil fraction without toxic or unpalatable effects.Type: GrantFiled: December 20, 2000Date of Patent: February 5, 2002Assignee: Natural LimitedInventor: Jan Remmereit
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Patent number: 6329557Abstract: The present invention provides an industrial scale process for obtaining lutein and zeaxanthin concentrates of high purity from saponified marigold extracts that may have high levels of chlorophyll.Type: GrantFiled: June 9, 2000Date of Patent: December 11, 2001Assignee: Prodemex, S.A. de C.V.Inventors: Gustavo Rodriguez, Mario-David Torres-Cardona, Alejandro Diaz
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Patent number: 6313328Abstract: A commercial-scale method for processing corn grain includes the steps of flaking corn grain having a total oil content of at least about 8% and extracting a corn oil from the flaked corn grain. Such a method can be effectuated by processing the high oil corn grain using methods and equipment typically used to process soybeans and other similar oilseed types. In this way, processing plants that flake oilseeds can be used to extract corn oil from corn.Type: GrantFiled: February 11, 1999Date of Patent: November 6, 2001Assignee: Cargill, IncorporatedInventors: James F. Ulrich, Stephan C. Anderson
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Publication number: 20010014750Abstract: A commercial-scale method for processing corn grain includes the steps of flaking corn grain having a total oil content of at least about 8% and extracting a corn oil from the flaked corn grain. Such a method can be effectuated by processing the high oil corn grain using methods and equipment typically used to process soybeans and other similar oilseed types. In this way, processing plants that flake oilseeds can be used to extract corn oil from corn.Type: ApplicationFiled: April 23, 2001Publication date: August 16, 2001Applicant: Cargill, Incorporated a Delaware corporationInventors: James F. Ulrich, Stephan C. Anderson
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Patent number: 6265593Abstract: A process is disclosed for extracting hydrophobic compounds from substantially fat-, oil-, and wax-free substance mixtures by using at least one non-polar extraction solvent in conjunction with at least one water-soluble organic solvent wherein the extraction solvent containing the hydrophobic compound can be recovered as the upper phase in a phase separation.Type: GrantFiled: March 11, 1999Date of Patent: July 24, 2001Assignee: Dr. Frische GmbHInventors: Bernd Best, Katja Hegwein, Rainer Frische, Barbara Olbrich-Deussner, Joachim Seemann
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Patent number: 6258964Abstract: A method of extracting liposoluble components contained in microbial cells, including the steps of drying microbial cells containing liposoluble components, descructing and molding the resultant dry microbial cells by use of an extruder, particularly a twin screw extruder, and extracting the contained liposoluble component by use of an organic solvent. According to the present method, liposoluble components contained in cells can be extracted and recovered with enhanced efficiency, within short time, and with safety.Type: GrantFiled: December 28, 1999Date of Patent: July 10, 2001Assignee: Idemitsu Petrochemical Co., Ltd.Inventors: Toshiaki Nakajima, Akihiro Kondo
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Patent number: 6248910Abstract: A multi-stage extraction process for extracting oil from naturally occurring oil-bearing organic materials. The oil, which is extracted, is inherent in the organic material by nature and is extracted in two or more extraction stages with an effective solvent at effective temperatures and pressures. The oil-bearing organic material is subjected to a vacuum between each extraction stage.Type: GrantFiled: March 16, 1998Date of Patent: June 19, 2001Assignee: University Research & Marketing Inc.Inventor: Henry L. Franke
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Patent number: 6229033Abstract: Fractionation of high stearic soybean oils and their use for the production of edible oils and fat products suitable for confectionary and high stability applications is disclosed. High stearic soybean oils which do not contain trans fatty acid isomers, are used to produce fats useful for confectionary applications. In addition, high stearic, high oleic soybean oils having a decreased polyunsaturated fatty acid content are used to produce two products: fats with utility in confectionary applications and liquid, high stability oils.Type: GrantFiled: May 3, 1999Date of Patent: May 8, 2001Assignee: E. I. du Pont de Nemours and CompanyInventor: Susan Knowlton
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Patent number: 6225483Abstract: A process for removing oil from oil-bearing material at substantially atmospheric pressure and are relatively low temperatures. The preferred temperature is the boiling point of the solvent, particularly a normally gaseous solvent, at about atmospheric pressure. This temperature will typically be below the freezing point of water.Type: GrantFiled: May 28, 1999Date of Patent: May 1, 2001Inventor: Henry L Franke
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Patent number: 6203843Abstract: A conjugated linoleic acid is prepared in industrial scale as a hydrolyzed isomerized product for blending into bulk domestic animal feeds. The CLA-containing isomerized hydrolyzed oil from sunflower and safflower seeds has sufficiently low levels of phosphatides and sterols to permit crude processing and incorporation into feeds of an undried, undistilled oil fraction without toxic or unpalatable effects.Type: GrantFiled: February 17, 2000Date of Patent: March 20, 2001Assignee: Natural Nutrition Ltd.Inventor: Jan Remmereit
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Patent number: 6201145Abstract: A non-hydrogenated canola oil having superior oxidative stability and fry stability useful for food applications is disclosed, as well as seeds, plant lines and progeny thereof from which the oil is derived.Type: GrantFiled: May 4, 1999Date of Patent: March 13, 2001Assignee: Cargill, IncorporatedInventor: Zhegong Fan
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Patent number: 6201142Abstract: An efficient process for recovering high quality corn oil from corn germ. The process involves pre-treating corn germ by Rehydration, conditioning and, optionally flaking. This is followed by extrusion, which is the core operation in the preparation of corn germ for corn oil recovery. Water is provided up front in the process, prior to extrusion. Providing water up front reduces generation of fines and improves friction within the extruder, thereby allowing the material to move along and improving overall efficiency and streamlining of the process. The oil released from corn germ by this process is of high quality and high yield.Type: GrantFiled: December 23, 1997Date of Patent: March 13, 2001Assignee: BestfoodsInventor: Aurelia Maza
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Patent number: 6191293Abstract: Trans-xanthophyll ester concentrates having a trans-xanthophyll ester content of at least four times greater and preferably at least nine times greater than the cis-xanthophyll ester content are obtained. Xanthophyll ester concentrates having a total xanthophyll ester content of at least 40 wt. % and preferably greater than about 55 wt. % are also obtained.Type: GrantFiled: January 12, 1999Date of Patent: February 20, 2001Assignee: Inexa, Industria Extractora C.A.Inventor: Luis W. Levy
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Patent number: 6172246Abstract: A multi-stage extraction process for extracting fats and oils from cooked food products. The cooked food products can be plant-derived or animal-derived food products, particularly fried snack food products, such as potato chips. The method comprises treating the cooked food product in a two or more extraction stage with a suitable solvent at effective temperatures and pressures, wherein the food product is subjected to a vacuum between each extraction stage.Type: GrantFiled: March 16, 1998Date of Patent: January 9, 2001Assignee: University Research & Marketing Inc.Inventor: Henry L. Franke
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Patent number: 6166231Abstract: A method of separating edible oil from biological material is disclosed. A biomass slurry containing microbial material in an aqueous suspension is collected. The slurry is typically placed in a centrifuge and then in a homogenizer. The resulting slurry is fed into a contacting device, such as a packed column, and mixed with a solvent that is essentially immiscible in water, for example hexane. The solvent extracts the oil from the biomass slurry and then separates from the slurry. Edible oil is recovered from the solvent and further processed.Type: GrantFiled: December 15, 1998Date of Patent: December 26, 2000Assignee: Martek Biosciences CorporationInventor: Scot Douglas Hoeksema
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Patent number: 6103918Abstract: A process of producing glyceride oil having a very low content of non-hydratable phosphatides from fatty seeds and fruits is disclosed. In the process, the fatty material is instantaneously and for a very short time exposed to a high temperature at a controlled water content. The glyceride oil extracted from the thermally treated material has after water-degumming the same low contents of phosphorus, iron, calcium and magnesium as can be achieved by treatment with strong acid and alkali (superdegumming) of a conventionally produced glyceride oil.Type: GrantFiled: December 30, 1998Date of Patent: August 15, 2000Assignee: Karlshamns Crushing & Feed ABInventor: Josef Dahlen
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Patent number: 6042869Abstract: A conjugated linoleic acid is prepared in industrial scale as a hydrolyzed isomerized product for blending into bulk domestic animal feeds. The CLA-containing isomerized hydrolyzed oil from sunflower and safflower seeds has sufficiently low levels of phosphatides and sterols to permit crude processing and incorporation into feeds of an undried, undistilled oil fraction without toxic or unpalatable effects.Type: GrantFiled: February 20, 1998Date of Patent: March 28, 2000Assignee: Natural Nutrition Ltd.Inventor: Jan Remmereit
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Patent number: 6022453Abstract: A compact apparatus of the distillation of solvent from a mixture of the solvent with oil seed for the extraction thereof according to the invention, the primary module includes a vapor scrubber forming a vapor contactor, a main evaporator and a first condenser while the secondary module has an after evaporator combined in a unit with the stripping column and the second condenser.Type: GrantFiled: August 6, 1998Date of Patent: February 8, 2000Assignee: Fried. Krupp AG Hoesch KruppInventor: Klaus Weber
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Patent number: 5998640Abstract: A method and apparatus for continuously removing oil from oil-bearing solids such as tar sands, vegetables or other solid materials using a solvent is provided. By providing a pressure differential between the exterior and interior of an oil extraction chamber, substantially oil free solids may be removed from the oil extraction chamber through a solids extraction channel without removing any substantial volume of solvent through the solids extraction channel.Type: GrantFiled: May 30, 1996Date of Patent: December 7, 1999Inventors: Gary R. Haefele, Peter A. Allen, Gary L. Dunkel, Paul C. Wegner
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Patent number: 5985344Abstract: A simple and cost effective enrichment process for enhancing antioxidant content of rice bran oil from crude rice bran oil (CrRBO) is described. The process comprises extracting the CrRBO using alcohol at 25-77.degree. C., obtaining the enriched rice bran oil (ERBO) from alcohol extracts which contain 74 to 300 percent more antioxidants than the starting CrRBO. The anti-oxidant enriched rice bran oil is useful in pharmaceutical, therapeutic, and dietary preparations.Type: GrantFiled: August 31, 1998Date of Patent: November 16, 1999Assignee: The RiceX CompanyInventors: Reddy Sastry V. Cherukuri, Rukmini Cheruvanky, Ike Lynch, Daniel L. McPeak
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Patent number: 5980964Abstract: A method of extracting from an oil bearing product at below a select temperature. The method includes providing an oil bearing product at a temperature at or below the select temperature. A liquid extraction solvent that is a gas under standard temperature and pressure is provided, with the extraction solvent being maintained at a temperature below its boiling point at ambient pressure and below the select temperature and at substantially ambient pressure. The oil bearing product is contacted with the extraction solvent at ambient pressure for a period sufficient to extract a select amount of the oil from the oil bearing product resulting in a reduced oil content product and an oil bearing extraction solvent.Type: GrantFiled: June 18, 1998Date of Patent: November 9, 1999Assignee: Gilroy Foods, d/b/a/ConAgra CorporationInventors: Alan Walters, Justin Dodds
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Patent number: 5976595Abstract: Process for flavouring an edible oil by incorporating into a recipient oil flavour substances of which a part has been derived from liquid/liquid extraction, particularly using an ethanol/water mixture of a flavour source liquid, characterized in that another part of the flavour substances has been derived from gas/liquid extraction using an extraction gas which is conducted first through a heated flavour oil and then through a cooler recipient oil.Type: GrantFiled: April 20, 1998Date of Patent: November 2, 1999Assignee: Unilever Patent HoldingsInventors: Keshab L. Ganguli, Anton R. van Immerseel, George C. Michaelides, Karel P. van Putte, Hessel Turksma
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Patent number: 5969169Abstract: A non-hydrogenated canola oil having superior oxidative stability and fry stability useful for food applications is disclosed, as well as seeds, plant lines and progeny thereof from which the oil is derived.Type: GrantFiled: April 20, 1995Date of Patent: October 19, 1999Assignee: Cargill, IncorporatedInventor: Zhegong Fan
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Patent number: 5939571Abstract: A device for the production of oils by pressing and extracting a raw material containing oleiferous or extractable substances in the presence of a liquid or supercritical extraction agent. The device includes an inlet for said raw material, a substantially cylindrical pressing body having outlets for oils and being connected to said inlet, and a press screw movably provided in said cylindrical pressing body whereby said raw material is transported from said inlet into said pressing body and therefrom to a discharge outlet while being pressed. In addition, the pressing body is proof-sealed against its surroundings by a jacket and the press screw and/or the pressing body include outlets wherethrough a liquid extraction agent may be introduced into said raw material present in said pressing body. At the outlet of said pressing body, a pipe permitting degassing of the press cake discharged from the press by applying a vacuum, thus removing the solvent from it, may be provided.Type: GrantFiled: October 27, 1997Date of Patent: August 17, 1999Assignee: Sucher & Holzer Bauplanungs --undInventor: Nikolaus Foidl
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Patent number: 5843499Abstract: An oil extractable from corn fiber contains ferulate esters, in particular sitostanyl ester, which has been shown to have cholesterol-lowering activity. The oil is extracted by a novel process which includes a grinding step carried out before extraction with an effective organic solvent such as hexane. The corn fiber oil may be combined with an ingestible and/or edible carrier for administration as a dietary supplement for cholesterol-lowering purposes.Type: GrantFiled: October 8, 1997Date of Patent: December 1, 1998Assignee: The United States of America as represented by the Secretary of AgricultureInventors: Robert A. Moreau, Kevin B. Hicks, Robert J. Nicolosi, Robert A. Norton
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Patent number: 5811563Abstract: Disclosed is a process for the fractionation of wool wax acid mixtures by dissolving the starting material in a polar organic solvent (mixture). The dissolved wool wax acid mixture is treated at a temperature between -5 and 30.degree. C. and at a pressure between 10 and 70 bar with gaseous carbon dioxide and the hydroxy-fatty acids that accumulate as a solid are separated from the solution.Type: GrantFiled: March 12, 1996Date of Patent: September 22, 1998Assignee: SKW Trotestberg AKInventors: Jurgen Heidlas, Martin Ober, Jan Cully