Crystallization Or Precipitation (e.g., Separation According To Degree Of Saturation, Etc.) Patents (Class 554/211)
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Patent number: 10472590Abstract: The present invention addresses the problem of providing a crystallization method having excellent separation performance between a crystal fraction and a liquid fraction after crystallization in a dry-mode separation method employing stirring crystallization and compression filtration, whereby it becomes possible to produce an SUS-rich oil/fat from an SUS-containing oil/fat. In the dry-mode oil/fat separation for producing an SUS-rich oil/fat having an SUS content of 60% by weight or more from an SUS-containing oil/fat having an SUS content of 30% by weight or more, a crystalline S3 component is added to the SUS-containing oil/fat in an amount of 5 to 200 ppm by weight relative to the amount of the SUS-containing oil/fat at a temperature that is higher by 0 to 2° C. than a cloud point of the SUS-containing oil/fat so as to be mixed, and performing stirring crystallization.Type: GrantFiled: November 21, 2017Date of Patent: November 12, 2019Assignee: FUJI OIL HOLDINGS INC.Inventor: Kenji Murai
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Patent number: 10329514Abstract: The present invention relates to a method for treating vegetable oils and/or animal fats. The method comprises adjusting temperature, treatment with acid, adjusting pH, contacting the aqueous mixture with enzyme, crystallization of high melting glycerides and separation.Type: GrantFiled: October 31, 2012Date of Patent: June 25, 2019Assignee: ALFA LAVAL CORPORATE ABInventors: Alexey Shevchenko, Ling Hua
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Patent number: 9051533Abstract: A continuous process for the dry fractionation of edible oils and fats using one or more crystallisers in series, said process comprising the steps of: (a) providing a molten fat; (b) continuously feeding said molten oil or fat to the first of said one or more crystallisers in series in which the fat is gradually cooled by using heat exchangers containing a cooling medium so that a crystal slurry is formed, each of said one or more crystallisers exhibiting a temperature gradient, the temperature at the point where the molten or partially crystallised fat enters one of the crystallisers being higher than that at the point where the slurry leaves that crystalliser; (c) continuously withdrawing said slurry from the last of said one or more crystallisers; (d) separating said crystal slurry by filtration in a filter cake and a filtrate, wherein said process further comprises the step of at least partially melting fat encrustations deposited on said heat exchangers; and an oil fraction produced by therefrom.Type: GrantFiled: November 13, 2012Date of Patent: June 9, 2015Assignee: n.v. DESMET BALLESTRA ENGINEERING s.a.Inventors: Marc Kellens, Gijs Calliauw, Marc Hendrix
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Patent number: 8962874Abstract: The present invention relates to an improved process for fractionating triglyceride oil. The process according to the present invention attains a reproducible crystallization by introducing a controlled temperature profile and ensuing crystal development that reduce the amount of entrapped olein inside the crystals or crystal aggregates. The process of the present invention may be used to fractionate vegetable oils such as palm oil or its blends with other palm oil products or edible vegetable oils.Type: GrantFiled: September 12, 2013Date of Patent: February 24, 2015Assignee: Malaysian Palm Oil Board (MPOB)Inventors: Chiew Let Chong, Chee Beng Yeoh
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Publication number: 20140296550Abstract: The present invention relates to an improved process for fractionating triglyceride oil. The process according to the present invention attains a reproducible crystallization by introducing a controlled temperature profile and ensuing crystal development that reduce the amount of entrapped olein inside the crystals or crystal aggregates. The process of the present invention may be used to fractionate vegetable oils such as palm oil or its blends with other palm oil products or edible vegetable oils.Type: ApplicationFiled: September 12, 2013Publication date: October 2, 2014Applicant: Malaysian Palm Oil Board (MPOB)Inventors: Chiew Let CHONG, Chee Beng YEOH
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Patent number: 8791283Abstract: The present invention relates to a process for fractioning refined triglyceride oil. The process according to the present invention attains a reproducible crystallization by introducing a controlled temperature profile and ensuing crystal development that reduce the amount of entrapped olein inside the crystals or crystal aggregates. The process of the present invention may be used to fractionate refined and or refined, bleached and deodorized vegetable oils especially refined and or refined, bleached and deodorized palm oil.Type: GrantFiled: September 12, 2013Date of Patent: July 29, 2014Assignee: Malaysian Palm Oil Board (MPOB)Inventors: Chiew Let Chong, Chee Beng Yeoh
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Patent number: 8772518Abstract: The purpose of the present invention is to provide a method, whereby, in the dry fractionation of an oil or fat, a decrease in solid-liquid separation efficiency, said decrease being caused by the engulfment of a filtrate fraction into a crystal fraction after crystallization and press filtration, can be prevented and thus the crystal slurry can be efficiently separated after the crystallization. A method for the dry fractionation of an oil or fat, said method comprising, before or after crystallization, adding a definite amount of a filtration aid followed by mixing and then press-filtering the thus obtained crystal slurry. Thus, the crystal slurry can be easily separated into a crystal fraction with little engulfment of a liquid fraction and the liquid fraction.Type: GrantFiled: December 19, 2011Date of Patent: July 8, 2014Assignee: Fuji Oil Company LimitedInventors: Kenji Murai, Kazuhisa Ogawa, Shin Yoneda
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Patent number: 8709276Abstract: A refrigeration composition containing at least one ester formed by esterification of a hydroxycarboxylic acid component and an alcohol component, the hydroxycarboxylic acid component chosen from hydroxycarboxylic acids comprising more than one carboxylic acid group, hydroxystearic acid, hydroxylauric acid, hydroxydecanoic acid, hydroxyarachidic acid, hydroxypalmitic acid, hydroxylinoleic acid, hydroxyerucic acid, hydroxyarachidonic acid, ricinoleic acid, and combinations thereof, and the alcohol component containing at least one alcohol; and a base oil lubricant chosen from alkylbenzenes, alkylated naphthenics, polyalkylene glycols, polyvinylethers, polyalphaolefins, mineral oils, polyol esters, and combinations thereof.Type: GrantFiled: February 27, 2012Date of Patent: April 29, 2014Assignee: Shrieve Chemical Products, Inc.Inventors: Liwen Wei, Phil Beckler
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Patent number: 8552211Abstract: Disclosed is a dry oil-and-fat separation method of high yield and high separation accuracy, which uses agitation and crystallization in order to prevent problems with thickening of the crystal slurry and decreased solid/liquid separation efficiency in the crystallization/press-filtering process of dry separation of oil-and-fat containing highly crystalline SUS. In dry separation, the crystallization/press-filtering process is divided into multiple steps and repeated, to concentrate the SUS in each crystal fraction and yield SUS-rich oil and fat. Subdivision into multiple steps makes it possible to keep the crystallinity of the crystal slurry in the crystallization/press-filtering process within a range so that the crystal slurry can be transported by pump, and to increase solid/liquid separation efficiency.Type: GrantFiled: January 27, 2010Date of Patent: October 8, 2013Assignee: Fuji Oil Company, LimitedInventors: Koreta Ueyama, Toshiaki Takahashi, Kenji Murai, Shin Yoneda
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Publication number: 20130129775Abstract: Disclosed here are compositions rich in omega-7 fatty acids, including palmitoleic acid, and products rich in omega-7 fatty acids derived from algal biomass. The algae and/or compositions rich in omega-7 fatty acids may be used in products or as ingredients of products. Methods and systems for increasing the production or concentration of omega-7 fatty acids, and isolating omega-7 fatty acids from algal biomass are also disclosed herein.Type: ApplicationFiled: November 19, 2012Publication date: May 23, 2013Applicant: HELIAE DEVELOPMENT, LLCInventor: Heliae Development, LLC
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Publication number: 20130123524Abstract: A continuous process for the dry fractionation of edible oils and fats using one or more crystallisers in series, said process comprising the steps of: (a) providing a molten fat; (b) continuously feeding said molten oil or fat to the first of said one or more crystallisers in series in which the fat is gradually cooled by using heat exchangers containing a cooling medium so that a crystal slurry is formed, each of said one or more crystallisers exhibiting a temperature gradient, the temperature at the point where the molten or partially crystallised fat enters one of the crystallisers being higher than that at the point where the slurry leaves that crystalliser; (c) continuously withdrawing said slurry from the last of said one or more crystallisers; (d) separating said crystal slurry by filtration in a filter cake and a filtrate, wherein said process further comprises the step of at least partially melting fat encrustations deposited on said heat exchangers; and an oil fraction produced by therefrom.Type: ApplicationFiled: November 13, 2012Publication date: May 16, 2013Applicant: DESMET BALLESTRA GROUP N.V.Inventor: DESMET BALLESTRA GROUP N.V.
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Patent number: 8268188Abstract: A refrigeration composition containing at least one ester formed by esterification of a hydroxycarboxylic acid component and an alcohol component, the hydroxycarboxylic acid component chosen from hydroxycarboxylic acids comprising more than one carboxylic acid group, hydroxystearic acid, hydroxylauric acid, hydroxydecanoic acid, hydroxyarachidic acid, hydroxypalmitic acid, hydroxylinoleic acid, hydroxyerucic acid, hydroxyarachidonic acid, ricinoleic acid, and combinations thereof, and the alcohol component containing at least one alcohol; and a base oil lubricant chosen from alkylbenzenes, alkylated naphthenics, polyalkylene glycols, polyvinylethers, polyalphaolefins, mineral oils, polyol esters, and combinations thereof.Type: GrantFiled: October 6, 2011Date of Patent: September 18, 2012Assignee: Shrieve Chemical Products, Inc.Inventors: Liwen Wei, Phil Beckler
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Publication number: 20120174473Abstract: A methodology for separation and subsequent handling of FAME fractions of biodiesel, comprising of the steps, providing a biodiesel containing several different FAME fractions mixed together, the biodiesel being at a first temperature wherein at the first temperature none of the FAME fractions of the biodiesel have crystallized; bringing the biodiesel to a first crystallizing temperature, wherein when the biodiesel reaches the first crystallizing temperature, a first FAME fraction remains in a non-crystallized, liquid phase while the remaining FAME fractions crystallize; and separating the liquid first FAME fraction from the remaining crystallized FAME fractions.Type: ApplicationFiled: January 6, 2012Publication date: July 12, 2012Applicant: GREEN FUELS, LIMITEDInventor: Duane Johnson
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Patent number: 8203014Abstract: 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.Type: GrantFiled: July 18, 2008Date of Patent: June 19, 2012Assignee: N.V. de Smet Engineering S.A.Inventors: Marc Kellens, Marc Hendrix
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Patent number: 8123974Abstract: Novel refrigeration compositions are disclosed herein. In an embodiment, a refrigeration composition comprises a mixture of an ester of a hydroxycarboxylic acid. The hydroxycarboxylic acid has a chain length ranging from 8 to 22 carbon atoms. The composition also comprises a carrier fluid or base oil, selected from the group consisting of an alkylbenzene, an alkylated naphthenic, a polyalkylene glycol, a polyvinylether, a polyalphaolefin, mineral oil, a polyol ester, and combinations thereof, providing improved fluidity and heat transfer, and enhanced oil return.Type: GrantFiled: September 13, 2007Date of Patent: February 28, 2012Assignee: Shrieve Chemical Products, Inc.Inventors: Liwen Wei, Phil Beckler
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Publication number: 20110301372Abstract: Disclosed is a dry oil-and-fat separation method of high yield and high separation accuracy, which uses agitation and crystallization in order to prevent problems with thickening of the crystal slurry and decreased solid/liquid separation efficiency in the crystallization/press-filtering process of dry separation of oil-and-fat containing highly crystalline SUS. In dry separation, the crystallization/press-filtering process is divided into multiple steps and repeated, to concentrate the SUS in each crystal fraction and yield SUS-rich oil and fat. Subdivision into multiple steps makes it possible to keep the crystallinity of the crystal slurry in the crystallization/press-filtering process within a range so that the crystal slurry can be transported by pump, and to increase solid/liquid separation efficiency.Type: ApplicationFiled: January 27, 2010Publication date: December 8, 2011Inventors: Koreta Ueyama, Toshiaki Takahashi, Kenji Murai, Shin Yoneda
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Publication number: 20100222607Abstract: The present invention discloses a method of producing triglycerides rich in XOX fat and/or XLX fat, which comprises the steps of heating and dissolving triglycerides (XOX fat and/or XLX fat) which comprise 20 to 60 mass % of a triglyceride having a saturated fatty acid residue on each of the first and third position and an oleoyl group and/or a linoleoyl group on the second position in total triglycerides in the presence of 1 to 30 mass % of a fatty acid lower alkyl ester; and then cooling the mixture to precipitate crystals and conducting solid-liquid separation. This method is a more efficient and industrially suitable fractionation and production method of fats and oils which are rich in a triglyceride (XOX fat and/or XLX fat) having a saturated fatty acid residue on each of the first and third position and an oleoyl group and/or a linoleoyl group on the second position.Type: ApplicationFiled: September 8, 2008Publication date: September 2, 2010Applicant: The Nisshin Oillio Group, Ltd.Inventors: Shin Arimoto, Hidetaka Uehara, Tomomi Suganuma, Kinya Tsuchiya, Satoshi Negishi
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Patent number: 7767241Abstract: It is intended to provide a dry fractionation method for fat whereby the performance for fractionating a fat into a high-melting fraction, a medium-melting fraction and a low-melting fraction can be improved to thereby preventing, in particular, the medium-melting fraction from worsening of the melting properties in the mouth and a decrease in the melting point with the passage of time and, in its turn, improving the melting properties in the mouth of a chocolate product which is produced by using the thus obtained hard butter for chocolates, etc. A method of fractionating a fat wherein a fraction (in particular, a medium-melting fraction) obtained by dry fractionation is efficiently separated from a high-melting fraction and a low-melting fraction mixed therewith.Type: GrantFiled: September 29, 2003Date of Patent: August 3, 2010Assignee: Fuji Oil Company, LimitedInventors: Yuji Kuwabara, Nobuaki Kanai, Toshiaki Takahashi, Yoshihiro Yamanaka, Koichi Kuramori, Sachiko Inui
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Patent number: 7727569Abstract: It is intended to provide a procedure for, in the fractionation of vegetable butter, transesterified fat or oil, isomerized hydrogenated fat or oil, etc. without the use of solvents, obtaining high-concentration component G2U (defined below) by concentrating operation through reduction of the amount of liquid component residue in crystal portion. There is provided a method of dry fractionation of fat or oil characterized in that fat or oil (A) containing components G2U and GU2 is fractionated through crystallization/solid-liquid separation into crystal fraction of concentrated G2U (AF) and liquid fraction of concentrated GU2 (AL), subsequently this crystal fraction (AF) is mixed with liquid G2U-containing fat or oil (B) whose GU2 concentration is lower than that of the liquid fraction (AL) and thereafter the mixture is separated into crystal fraction (BF) and liquid fraction (BL).Type: GrantFiled: December 15, 2004Date of Patent: June 1, 2010Assignee: Fuji Oil Company, LimitedInventors: Yuji Kuwabara, Nobuaki Kanai, Toshiaki Takahashi, Yoshihiro Yamanaka
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Publication number: 20090264667Abstract: 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.Type: ApplicationFiled: July 18, 2008Publication date: October 22, 2009Applicant: N.V. De Smet Engineering S.A.Inventors: Marc Kellens, Marc Hendrix
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Patent number: 7550615Abstract: Provided is a preparation process of a diglyceride-rich fat or oil, which includes bringing a fat or oil containing diglycerides in an amount of 50 mass % or greater and having a transition metal content of 5 ppm or less into contact with steam while forming a thin film of the fat or oil. This process makes it possible to prepare a diglyceride-rich fat or oil having a reduced odor and good color efficiently.Type: GrantFiled: November 8, 2007Date of Patent: June 23, 2009Assignee: Kao CorporationInventors: Eizo Maruyama, Keiji Shibata, Hiroaki Yamaguchi
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Patent number: 7514576Abstract: A process for the separation of alkyl branched C12 to C24 fatty acids from a fatty acid mixture comprising linear and alkyl branched C12 to C24 fatty acids comprises; (i) optionally hydrogenating the fatty acid mixture, (ii) cooling the mixture to form crystals, and (iii) separating the alkyl branched C12 to C24 fatty acids from the mixture by dry fractionation.Type: GrantFiled: September 20, 2004Date of Patent: April 7, 2009Assignees: Unichema Chemie B.V., ICI Americas, Inc.Inventors: Steven Tanzi, Aloisius R. M. Soeterboek, Erik T Brug, Johannes J Vreewijk
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Patent number: 7385068Abstract: An improved alkaline earth metal stearate composition is disclosed and is prepared by reacting a fatty acid component including stearic acid and palmitic acid with an alkali hydroxide to form an alkaline soap. An aqueous metal salt solution is then added to the soap, and pH adjusted to less than about pH 8 to form the improved alkaline earth metal stearate. The improved alkaline earth metal stearate provides a substantially pure amount of the dihydrate form of the stearate.Type: GrantFiled: June 16, 2005Date of Patent: June 10, 2008Assignee: Mallinckrodt Inc.Inventors: Todd P. Heider, Steven M. Wolfgang, Scot R. Randle
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Patent number: 7375240Abstract: Provided is a preparation process of a diglyceride-rich fat or oil, which includes bringing a fat or oil containing diglycerides in an amount of 50 mass % or greater and having a transition metal content of 5 ppm or less into contact with steam while forming a thin film of the fat or oil. This process makes it possible to prepare a diglyceride-rich fat or oil having a reduced odor and good color efficiently.Type: GrantFiled: December 22, 2005Date of Patent: May 20, 2008Assignee: Kao CorporationInventors: Eizo Maruyama, Keiji Shibata, Hiroaki Yamaguchi
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Patent number: 6894178Abstract: The invention relates to a process for producing seed crystal suspensions based on melted fat. In particular, the invention describes a process for generating stable microdisperse cocoa butter crystal suspensions which have a high ?VI modification share and using the seed suspensions in the seed crystallization of fat-based suspensions containing disperse solid particles such as chocolate, chocolate-like masses, or the like. The invention also describes an apparatus for carrying out the process.Type: GrantFiled: May 29, 1999Date of Patent: May 17, 2005Assignee: Camille Bloch S.A.Inventors: Erich Windhab, Yuantong Zeng
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Patent number: 6846942Abstract: Pure DHA and pure EPA can be obtained from a mixture of EPA and DHA in a solution by forming salts of DHA and EPA which have different solubilities in the solvent, cooling the solution until the salt of EPA is formed, filtering the solution to recover the salt of EPA, and acidifying the EPA salt and the DHA salt to obtain pure EPA and pure DHA.Type: GrantFiled: May 20, 2003Date of Patent: January 25, 2005Inventor: David Rubin
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Patent number: 6841692Abstract: The present invention provides a method for separating a saturated fatty acid and an unsaturated fatty acid from a mixture of fatty acids by a dry fractionation process with a superior efficiency. Namely, the present invention provides a method for producing a saturated fatty acid or an unsaturated fatty acid comprising a dry fractionation process to fractionate a saturated fatty acid and an unsaturated fatty acid in a raw fatty acids mixture by adding a polyglycerol ester of fatty acid to the raw fatty acids mixture, wherein the polyglycerol ester of fatty acid has a clear melting point (y) satisfying the following formula (1): 0.38x+13?y?0.54x+44??(1) wherein x is a ratio (% by mass) of saturated fatty acids (C12 to C22) in raw fatty acids, and y is a clear melting point (° C.) of a polyglycerol ester of fatty acid.Type: GrantFiled: June 5, 2003Date of Patent: January 11, 2005Assignee: Kao CorporationInventors: Minoru Kase, Eizo Maruyama, Hiroaki Yamaguchi
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Patent number: 6825368Abstract: The present invention provides a method for producing a saturated fatty acid and an unsaturated fatty acid, which comprises adding and mixing a polyglycerol ester of a fatty acid to a raw fatty acids mixture, cooling the resultant mixture to deposit crystals, and fractionating the saturated fatty acid and the unsaturated fatty acid, wherein a cooling procedure is performed at a cooling rate of 4° C./h or less when a supersaturation ratio is 60% or more and said cooling rate is varied during the cooling, and a glycerides mixture obtained from the fractionated unsaturated fatty acids. According to the present invention, a saturated fatty acid and an unsaturated fatty acid in a raw fatty acids mixture can be separated easily and efficiently by a dry fractionation process.Type: GrantFiled: July 9, 2003Date of Patent: November 30, 2004Assignee: Kao CorporationInventors: Minoru Kase, Keiji Shibata, Eizo Maruyama
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Publication number: 20040236128Abstract: Pure DHA and pure EPA can be obtained from a mixture of EPA and DHA in a solution by forming salts of DHA and EPA which have different solubilities in the solvent, cooling the solution until the salt of EPA is formed, filtering the solution to recover the salt of EPA, and acidifying the EPA salt and the DHA salt to obtain pure EPA and pure DHA.Type: ApplicationFiled: May 20, 2003Publication date: November 25, 2004Inventor: David Rubin
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Publication number: 20040158088Abstract: A method and apparatus for refining triglyceride oils to produce haze-free, clear oils for use in cosmetics and pharmaceuticals. The method includes subjecting unrefined triglyceride oils with moderate amounts of saturated fats to a sequence of thermally regulated and adsorbent aided filtrations followed by melting, crystallization, and filtration steps to produce translucent and clear oil that can be stored for long periods of time.Type: ApplicationFiled: August 25, 2003Publication date: August 12, 2004Applicant: Texas A&M UniversityInventor: Ernesto Hernandez
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Publication number: 20040132147Abstract: The present invention provides a method for producing a saturated fatty acid and an unsaturated fatty acid, which comprises adding and mixing a polyglycerol ester of a fatty acid to a raw fatty acids mixture, cooling the resultant mixture to deposit crystals, and fractionating the saturated fatty acid and the unsaturated fatty acid, wherein a cooling procedure is performed at a cooling rate of 4° C./h or less when a supersaturation ratio is 60% or more and said cooling rate is varied during the cooling, and a glycerides mixture obtained from the fractionated unsaturated fatty acids.Type: ApplicationFiled: July 9, 2003Publication date: July 8, 2004Applicant: KAO CORPORATIONInventors: Minoru Kase, Keiji Shibata, Eizo Maruyama
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Patent number: 6706903Abstract: A process for removing saturated fatty acids from a primarily unsaturated fatty acid mixture is disclosed wherein the process comprises fractionally distilling off saturated C16 and other minor fatty acid components in the mixture to a level less than or equal to 4% by weight, adding a lower polyglycerol ester as a crystallization aid, then cooling and fractionally crystallizing out remaining saturated fatty acids to yield a product comprising less than 3.3% saturated fatty acids by weight.Type: GrantFiled: October 7, 2002Date of Patent: March 16, 2004Assignee: Crompton CorporationInventors: Guy Hendree, Shannon Martin, Thomas E. Breuer, Kyle Walker
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Patent number: 6552208Abstract: The invention refers to a process for fractionating a vegetable oil giving one or more solid fractions suitable for confectionary applications as well as a liquid fraction rich in unsaponifiable biologically active components. The liquid fractions of shea butter and rapeseed oil having a high content of phytosterols and tocoferols, respectively, are useful for cosmetical and pharmaceutical preparations.Type: GrantFiled: January 18, 2001Date of Patent: April 22, 2003Assignee: Karlshamns ABInventors: Jari Alander, Ann-Charlotte Andersson, Håkan Malmros, Jörgen Nilsson
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Patent number: 6495189Abstract: Disclosed is a method of producing a fat and oil composition comprising the steps of melting a fat and oil, or emulsion comprising fat and oil, and crystallizing the above-mentioned fat and oil by cooling to produce a fat and oil composition in paste form or plastic form. The molten fat and oil, or emulsion comprising fat and oil, is pressurized under force at a pressure of 10 to 150 MPa during the above-mentioned crystallization in the production of fat and oil compositions such as fat and oil processed foods, etc. As a result the crystallization speed of the fat and oil is markedly increased and post-crystallization can be prevented. Thus, improvement in quality of the fat and oil processed food and improved efficiency of the production process in terms of time and energy is achieved.Type: GrantFiled: January 31, 2001Date of Patent: December 17, 2002Assignee: Kaneka CorporationInventors: Yasuharu Nosho, Kazuhiro Ueshima, Toshinori Ikehara, Shinichi Hashimoto, Masakazu Kato
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Patent number: 6475548Abstract: Triglyceride fat comprising a stearin fraction of a high stearic, high oleic sunflower oil and a margarine fat phase comprising said stearin in admixture with a liquid vegetable oil in a weight ratio of 20:80 to 80:20.Type: GrantFiled: June 13, 2001Date of Patent: November 5, 2002Assignee: Lipton, division of Conopco, Inc.Inventors: Johannes Robert Bons, Eckhard Floeter, Cornelis Sjouke Stellema
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Patent number: 6399802Abstract: Methods for acidification of soapstock and recovery of acidulated fatty acids are disclosed. Further methods of conversion of the acidulated fatty acids to esters are also disclosed. Further methods of crystallizing the acidulated fatty acids from the extraction solvent at low temperatures and fractionating the acidulated fatty acids from the extraction solvent using urea are also disclosed. The novel method of adding both a monohydric alcohol to the soapstock to lower viscosity and a strong acid to hydrolyse the soaps prevents the formation of emulsions of soaps and oils. The preferred embodiment uses a soapstock such as soybean soapstock, sulphuric acid and isopropanol. The novel process allows the quantitative recovery of fatty acids and glyceride from the soapstock by removal of the alcohol by evaporation. Alternatively the fatty acids and glyceride may be converted to esters of monohydric alcohols.Type: GrantFiled: March 21, 2001Date of Patent: June 4, 2002Assignee: KRU Feed Energy CompanyInventor: Martin J. T. Reaney
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Patent number: 6383456Abstract: An apparatus and method of fractionating mixed triglycerides, more particularly anhydrous milk fat, are disclosed. The apparatus and method provide for the separation of the steps of nucleation and crystal growth. Precise control of energy input for nucleation and crystal growth in a static environment at higher temperatures than the nucleation temperature result in the production of a solid fraction characterized by higher yields and a uniform MMT.Type: GrantFiled: July 20, 2000Date of Patent: May 7, 2002Assignee: Wiconsin Alumni Research FoundationInventors: Richard W. Hartel, Liang Baomin, Shi Yuping
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Patent number: 6355173Abstract: Oils, extracted from vegetables and animal tissues contain impurities such as waxes that can be removed in a refining process, including dewaxing of the oils that include removal of oils by filtration through membranes. During filtration, the impurities stick to the membranes, which causes a reduction in flux through the membranes. The initial top flux can be approached again by regularly cleaning the membranes including steps of: backblowing with gas, backflushing with edible oil, and treating the membranes with alkaline material. The cleaning method is particularly suitable for cleaning membranes in the form of microfilters having an average pore diameter of 0.5-5 &mgr;m, which are used in the refining process.Type: GrantFiled: April 28, 2000Date of Patent: March 12, 2002Assignee: Unilever Patent Holdings BVInventors: Henricus A. C. I. den Bieman, Jacobus Cornelis Segers, Vangelis Stavridis
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Publication number: 20010056196Abstract: A method for partially refining a crude vegetable oil utilizing physical refining techniques is described. The crude vegetable oil is first degummed by either (1) allowing the crude oil to settle over a period of time, such as twenty days, so that the oil becomes stratified into at least two layers, wherein one layer comprises gums with low oil content and a second layer comprises oil containing only a fraction of the gums originally present and then separating the oil layer from the gum layer, or (2) heating the crude oil to a temperature of about 270-300° F. with agitation and then allowing the crude oil to settle for a period of time until the oil becomes stratified into the at least two layers. The degummed oil is then aerated and agitated while being maintained at a temperature of 170-180° F. for a time period sufficient to obtain a desired oil viscosity. The resulting partially refined oil is suitable for use in industrial applications such as the preparation of urethane foams.Type: ApplicationFiled: February 21, 2001Publication date: December 27, 2001Inventor: Larry Mahlum
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Patent number: 6307077Abstract: This invention relates to a method of refining a crude vegetable oil by removing insoluble material from the oil to provide a substantially clarified oil. The process comprises cooling the vegetable oil and maintaining the vegetable oil at the desired low temperature. The vegetable oil is then heated to provide an amount of a substantially clarified oil that can be separated from the insoluble material. The process is useful for a wide variety of oils including soybean oil, sunflower oil, safflower oil, corn oil, sesame oil, rapeseed oil, linseed oil, cottonseed oil, rice bran oil, perilla oil, castor oil, olive oil, tsubaki oil, coconut oil, palm oil, hemp seed oil, tung oil, kapok oil, tea seed oil.Type: GrantFiled: August 9, 1999Date of Patent: October 23, 2001Inventor: Robert Michael Quear
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Patent number: 6265595Abstract: 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.Type: GrantFiled: March 30, 2000Date of Patent: July 24, 2001Assignee: Fuji Oil Company, LimitedInventors: Atsushi Taniguchi, Shin Yoneda, Yuji Kuwabara, Tokisane Kajiyama
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Patent number: 6169191Abstract: 1. Method and Apparatus for the production of stearin from fat of animal or plant origin. 2.1 A method is carried out such that during the duration of a production run, a sharp separation between the stearin phase and the oil phase is maintained at a constant rate, to achieve an optimum quality of stearin and stearin yield. 2.2. Crystallized oil of a temperature from 10 C to 40 C is fed into inlet (12) of a nozzle-type centrifuge (11) which is not self-emptying and is equipped with a stack of plates (15) and a stationary gripping device (16) for the oil phase. The solid phase is guided through flow chambers tapering towards the nozzles (20) and discharged through these nozzles. To realize a high degree of separation between the stearin phase and the oil phase, the ratio between the feed rate in I/h and the nozzle capacity in I/h is adjusted in the range between 2:1 and 4:1. 2.3 The method is used for stearin production from animal or plant fats. 3. FIG. 2.Type: GrantFiled: January 11, 1999Date of Patent: January 2, 2001Assignee: Westfalia Separator AGInventors: Wolfgang Wieking, Ernst Dolle
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Patent number: 6140520Abstract: An apparatus and method of fractionating mixed triglycerides, more particularly anhydrous milk fat, are disclosed. The apparatus and method provide for the separation of the steps of nucleation and crystal growth. Precise control of energy input for nucleation and crystal growth in a static environment at higher temperatures than the nucleation temperature result in the production of a solid fraction characterized by higher yields and a uniform MMT.Type: GrantFiled: May 7, 1998Date of Patent: October 31, 2000Assignee: Wisconsin Alumni Research FoundationInventors: Richard W. Hartel, Liang Baomin, Shi Yuping
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Patent number: 6072066Abstract: Process for crystallizing fatty substances for their subsequent fractionation especially by pressure filtering, consisting in particular in melting the fatty substances, dividing the molten mass into beads, feeding these beads into a pre-refrigerated aqueous solution, adjusting the concentration of the fatty substance relative to the aqueous solution, adjusting the feed rate of said beads, adjusting the temperature of the beads/solution mixture, maintaining said mixture temperature until the crystallization of each bead has completely stabilized, subsequently transferring the beads/solution mixture to the filtration location, separating the fatty substance beads under a low pressure from the aqueous solution, and finally extracting from said fatty substance beads, under high pressure, the liquid portion of the fatty substance, and apparatus for applying this process.Type: GrantFiled: May 4, 1998Date of Patent: June 6, 2000Inventors: Alain Tirtiaux, Chee Hong Tan
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Patent number: 6069263Abstract: A process for dry fractionation of fats and oils, by providing a fat-and-oil feedstock having an SFI at 20.degree. C. of at least 15; pre-cooling the fat-and-oil feedstock to a temperature of, at the highest, 3.degree. C. higher than that of a cooling medium to be used for crystallization; allowing the pre-cooled fat-and-oil feedstock to stand while further cooling the feedstock with the cooling medium to form fat crystals and to obtain cakes containing fat crystals; and subjecting the cakes to separation of solids from a liquid phase.Type: GrantFiled: March 11, 1997Date of Patent: May 30, 2000Assignee: Fuji Oil Company, LimitedInventors: Shin Yoneda, Kiyoyuki Higuchi, Atsushi Taniguchi, Yuji Kuwabara
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Patent number: 6025146Abstract: The present invention is directed to methods for crystallizing macrophage colony stimulating factor. The present invention is also directed to methods for designing and producing M-CSF agonists and antagonists using information derived from the crystallographic structure of M-CSF. The invention is also directed to methods for screening M-CSF agonists and antagonists. In addition, the present invention is directed to an isolated, purified, soluble and functional M-CSF receptor.Type: GrantFiled: June 5, 1995Date of Patent: February 15, 2000Assignee: Chiron CorporationInventors: Jayvardhan Pandit, Jarmila Jancarik, Sung-Hou Kim, Kirston Koths, Robert Halenbeck, Anna Lisa Fear, Eric Taylor, Ralph Yamamoto, Andrew Bohm
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Patent number: 5959129Abstract: Fractionation of lauric oils which contain a crystallization modifying substance consisting of a sucrose ester containing at least 40 wt. % laurate. With palmkernel oil fractionation a separation efficiency of more than 70% can be attained.Type: GrantFiled: October 3, 1997Date of Patent: September 28, 1999Assignee: Unilever Patent Holdings B.V.Inventors: Petrus Henricus J van Dam, Wim Hogervorst, Frans Kamp
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Patent number: 5952518Abstract: A method for efficiently removing saturated fatty acids from a fatty acid mixture is provided by adding an emulsifying agent to a feedstock fatty acid mixture, mixing and then cooling the mixture, and removing the crystallized portion by dry fractionation, and the use of the obtained reduced saturated fatty acid level mixture to produce fatty acid esters resistant to crystallization at low temperatures.Type: GrantFiled: April 30, 1998Date of Patent: September 14, 1999Assignee: Kao CorporationInventors: Masakatsu Sugiura, Minoru Kase
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Patent number: 5874599Abstract: A pseudo-steady state fractionation of a polymorhic fat, resulting in a product which is in a kinetically stable crystal form is performed in a way that a .sigma.-value is maintained below 0.5, wherein ##EQU1## S.sub.c being: the percentage solids in crystalliser at crystallisation temperatureS.sub.E being: the percentage solids after stabilisation for 48 hrs at exit temperature of crystalliser.Type: GrantFiled: June 11, 1997Date of Patent: February 23, 1999Assignee: Loders Croklaan B.V.Inventors: John Bernard Harris, Cornelius Nicholaas M. Keulemans, Leslie Alan Milton, Erwin J G Roest
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Patent number: 5872270Abstract: Process for separating solid fatty material from a triglyceride oil, which comprises the stepsa. heating the oil or a solution of the oil in an inert solvent until no longer a substantial amount of solid material is present,b. adding a crystallisation modifying substance to the oil or to the solution of the oil,c. cooling the oil resulting in crystallising a solid stearin phase besides a liquid olein phase andd. recovering the stearin phase by separating it from the olein phase,characterized in that the crystallisation modifying substance is a polysaccharide being an inulin or phlein with a molecular weight of 500-3990 Da, preferably 1300-2500 Da, of which at least 50% of the hydroxyl groups on the saccharide subunits are connected to (C8-C24) unbranched alkyl chains and the remaining hydroxyl groups, optionally, are connected with a (C1-C7)-alkyl chain, preferably in the form of an acetic ester.Type: GrantFiled: December 21, 1995Date of Patent: February 16, 1999Assignee: Van Den Bergh Foods Company, Division of Conopco, Inc.Inventors: Petrus Henricus van Dam, Cornelis Winkel, Adrianus Visser