Sugar Acid Having Five Or More Carbon Atoms (i.e., Aldonic, Keto-aldonic, Or Saccharic Acid) Patents (Class 435/137)
-
Patent number: 7501268Abstract: A method of producing a prenyl alcohol, comprising creating a recombinant by transferring into a host a recombinant DNA for expression or a DNA for genomic integration each comprising a prenyl diphosphate synthase gene or a mutant thereof, culturing the resultant recombinant, and recovering the prenyl alcohol from the resultant culture.Type: GrantFiled: December 20, 2001Date of Patent: March 10, 2009Assignee: Toyota Jidosha Kabushiki KaishaInventors: Chikara Ohto, Shusei Obata, Masayoshi Muramatsu, Kiyohiko Nishi, Kazuhiko Totsuka
-
Publication number: 20080254523Abstract: The invention provides methods and host cells for the production of ascorbic acid intermediates. The invention also provides host cells having a modification in a polynucleotide that uncouples the catabolic pathway from the oxidative pathway by deleting the encoding for an endogenous enzymatic activity that phosphorylates D-glucose at its 6th carbon and/or a polynucleotide that has deleted the encoding for endogenous enzymatic activity that phosphorylates D-gluconate at its 6th carbon. Such host cells are used for the production of products, such as, ascorbic acid intermediates. Nucleic acid and amino acid sequences with inactivated enzymatic activity which phosphorylates D-glucose at its 6th carbon and inactivated enzymatic activity which phosphorylates D-gluconate at its 6th carbon are provided.Type: ApplicationFiled: February 27, 2008Publication date: October 16, 2008Inventors: Timothy C. Dodge, Fernando Valle
-
Patent number: 7419795Abstract: The present invention relates to engineering metabolic pathways in bacterial host cells which results in enhanced carbon flow for the production of ascorbic acid (ASA) intermediates. In particular, the invention relates to increasing the production of ASA intermediates in bacterial cells by enhancing the availability of gluconate resulting from the inactivation of endogenous gluconate transporter genes.Type: GrantFiled: May 10, 2004Date of Patent: September 2, 2008Assignee: Danisco A/S, Genencor DivisionInventors: Timothy C. Dodge, Manoj Kumar, M. Harunur Rashid, Fernando Valle
-
Patent number: 7332355Abstract: The invention provides methods and compositions for the rapid and sensitive detection of post-translationally modified proteins, and particularly of those with post-translational glycosylations. The methods can be used to detect O-GlcNAc post-translational modifications on proteins on which such modifications were undetectable using other techniques. In one embodiment, the method exploits the ability of an engineered mutant of ?-1,4-galactosyltransferase to selectively transfer an unnatural ketone functionality onto O-GlcNAc glycosylated proteins. Once transferred, the ketone moiety serves as a versatile handle for the attachment of biotin, thereby enabling detection of the modified protein. The approach permits the rapid visualization of proteins that are at the limits of detection using traditional methods. Further, the preferred embodiments can be used for detection of certain disease states, such as cancer, Alzheimer's disease, neurodegeneration, cardiovascular disease, and diabetes.Type: GrantFiled: November 17, 2004Date of Patent: February 19, 2008Assignee: California Institute of TechnologyInventors: Linda Hsieh-Wilson, Nelly Khidekel, Hwan-Ching Tai, Sabine Arndt
-
Patent number: 7326549Abstract: The invention provides methods and materials related to the production of organic products such as glucuronic acid, ascorbic acid, and glucaric acid. Specifically, the invention provides cells, methods for culturing cells, isolated nucleic acid molecules, and methods and materials for producing various organic products such as glucuronic acid, ascorbic acid, and glucaric acid.Type: GrantFiled: March 19, 2002Date of Patent: February 5, 2008Assignee: Cargill, IncorporatedInventors: William A. Schroeder, Paula M. Hicks, Sara C. McFarlan, Timothy W. Abraham
-
Patent number: 7320867Abstract: A linker compound has a structure represented by general formula (1) below, where n is an integer of 1 to 6, and X has a structure serving as a multi-branched structure moiety including three or four hydrocarbon derivative chains each having an aromatic amino group at an end and a carbon-nitrogen bond in a backbone.Type: GrantFiled: September 8, 2003Date of Patent: January 22, 2008Assignees: Japan Science and Technology Agency, National University Corporation Kagoshima UniversityInventors: Yasuo Suda, Akio Arano, Shoichi Kusumoto, Michael Sobel
-
Patent number: 7267970Abstract: A method for producing substantially pure ammonium gluconate or metal gluconate that includes separating reagents for reuse from the enzymatically converted gluconate by ultrafiltration.Type: GrantFiled: December 6, 2004Date of Patent: September 11, 2007Assignee: NEC PartnershipInventors: Chinmay Chatterjee, Nilu Prasad Chatterjee, Edward D. Furtado
-
Patent number: 7183067Abstract: A versatile linker compound has a structure represented by following general formula (1), wherein Y has a structure represented by O or NH, and X has a structure serving as a multi-branched moiety including four hydrocarbon derivative chains each of which has an aromatic amino group at an end thereof, and may or may not have a carbon-nitrogen bond in a backbone thereof. With the versatile linker compound, sugar molecules can be two-dimensionally arranged on a surface of a protein-analyzing supporter with high reproducibility. Also, a ligand includes the versatile linker compound and a sugar molecule introduced thereinto.Type: GrantFiled: August 6, 2003Date of Patent: February 27, 2007Assignees: Japan Science and Technology Agency, National University Corporation Kagoshima UniversityInventors: Yasuo Suda, Akio Arano, Hideki Hayashi, Shoichi Kusumoto, Michael Sobel
-
Patent number: 7125704Abstract: A novel gluconate dehydratase derived from Achromobacter xylosoxidans and a gene encoding the gluconate dehydratase are provided. By reacting the gluconate dehydratase or a transformed cell containing the gene with an aldonic acid, the corresponding 2-keto-3-deoxyaldonic acid can be efficiently produced.Type: GrantFiled: July 8, 2004Date of Patent: October 24, 2006Assignee: Mitsui Chemicals, Inc.Inventors: Hitoki Miyake, Toshifumi Yamaki, Toshihiro Oikawa, Takeshi Nakamura, Hiroki Ishibashi, Yasushi Fukuiri, Atsushi Sakuma, Hironori Komatsu, Tomoyuki Ando, Kazuhiko Togashi, Hideki Umetani
-
Patent number: 7077953Abstract: An acid recovery system used in a hydrolysis operation includes a chromatographic unit to provide initial separation of sugar and acid. The sugar product provided by the chromatographic unit is processed to produce higher value products, such as ethanol. The remaining acid is contaminated by sugar. A nanofiltration unit containing a nanofilter membrane processes the sugar contaminated acid. The acid is allowed to permeate across the nanofilter membrane while sugar is rejected. The permeate is provided to a conventional acid recovery system and recycled for use in the hydrolysis process.Type: GrantFiled: September 11, 2003Date of Patent: July 18, 2006Assignee: Harris Group, Inc.Inventor: Jeffrey T. Ranney
-
Patent number: 7033804Abstract: The invention provides methods and host cells for the production of ascorbic acid intermediates. The invention also provides host cells having a modification in a polynucleotide that uncouples the catabolic pathway from the oxidative pathway by deleting the encoding for an endogenous enzymatic activity that phosphorylates D-glucose at its 6th carbon and/or a polynucleotide that has deleted the encoding for endogenous enzymatic activity that phosphorylates D-gluconate at its 6th carbon. Such host cells are used for the production of products, such as, ascorbic acid intermediates. Nucleic acid and amino acid sequences with inactivated enzymatic activity which phosphorylates D-glucose at its 6th carbon and inactivated enzymatic activity which phosphorylates D-gluconate at its 6th carbon are provided.Type: GrantFiled: April 4, 2002Date of Patent: April 25, 2006Assignee: Genencor International, Inc.Inventors: Timothy C. Dodge, Fernando Valle
-
Patent number: 6942997Abstract: An enzymatic system comprised of glucose oxidase and a catalase of the same or different sources to result in the complete conversion of glucose to gluconic acid at a glucose concentration greater than 25% (w/w) ds. The resultant gluconic acid, which is essentially free from impurities normally associated with the fermentation process, is then spray granulated to produce a low-dust dry product.Type: GrantFiled: July 2, 2003Date of Patent: September 13, 2005Assignee: Genencor International, Inc.Inventors: Oreste J. Lantero, Jayarama K. Shetty
-
Patent number: 6878535Abstract: An objective of the present invention is to provide a method of producing soyasapogenol B and to provide novel microorganisms. The present invention provides a method of producing soyasapogenol B comprising the steps of culturing microorganisms that belong to genus Neocosmospora or genus Eupenicillium, in a medium containing a glycoside having soyasapogenol B as an aglycone, and then collecting soyasapogenol B from the resulting culture.Type: GrantFiled: April 25, 2001Date of Patent: April 12, 2005Assignee: Meiji Seika Kaisha, Ltd.Inventors: Takashi Yaguchi, Goh Tsujiuchi, Nobuaki Kushida, Masato Tani
-
Patent number: 6855526Abstract: Mannitol is produced in a highly efficient fermentative method using Lactobacillus intermedius NRRL B-30560, or in a biochemical method using mannitol dehydrogenase isolated from this strain. Fructose serves as the primary carbon substrate in both the fermentative and biochemical conversions, but important secondary carbon sources include glucose, maltose, mannose and galactose. Mannitol is useful in the food, pharmaceutical, and medicine industries as a sweet-tasting bodying and texturing agent.Type: GrantFiled: May 15, 2002Date of Patent: February 15, 2005Assignee: The United States of America as represented by the Secretary of AgricultureInventor: Badal C. Saha
-
Patent number: 6855472Abstract: The invention is to provide polyhydroxyalkanoate of a novel structure enabling application to wider fields, and a producing method therefor. The invention also provides a biodegradable charge control agent having excellent charging characteristics, excellent dispersibility in the toner resin and improved spent property. The polyhydroxyalkanoate of the present invention is featured by including, in the polymer molecule, a units represented by the general formulas (1) and (2) and at least one of the units represented by the general formulas (3) to (6).Type: GrantFiled: April 29, 2002Date of Patent: February 15, 2005Assignee: Canon Kabushiki KaishaInventors: Takeshi Imamura, Etsuko Sugawa, Tetsuya Yano, Takashi Kenmoku
-
Patent number: 6846656Abstract: The present invention provides a process for economically producing N-acetylneuraminic acid without using expensive materials such as pyruvic acid and phosphoenolpyruvic acid. The process comprises: allowing (i) a culture of a microorganism having N-acetylneuraminic acid aldolase activity or N-acetylneuraminic acid synthetase activity, or a treated matter of the culture, (ii) a culture of a microorganism capable of producing pyruvic acid or a treated matter of the culture, or a culture of a microorganism capable of producing phosphoenolpyruvic acid or a treated matter of the culture, (iii) N-acetylmannosamine, and (iv) an energy source which is necessary for the formation of pyruvic acid or phosphoenolpyruvic acid to be present in an aqueous medium to form and accumulate N-acetylneuraminic acid in the aqueous medium; and recovering N-acetylneuraminic acid from the aqueous medium.Type: GrantFiled: August 25, 2000Date of Patent: January 25, 2005Assignee: Kyowa Hakko Kogyo Co., Ltd.Inventors: Satoshi Koizumi, Kazuhiko Tabata, Tetsuo Endo, Akio Ozaki
-
Patent number: 6828130Abstract: A method for producing substantially pure ammonium gluconate or metal gluconate that includes separating reagents for reuse from the enzymatically converted gluconate by ultrafiltrationType: GrantFiled: May 10, 2002Date of Patent: December 7, 2004Assignee: NEC PartnershipInventors: Chinmay Chatterjee, Nilu Prasad Chatterjee, Edward D. Furtado
-
Patent number: 6808854Abstract: The present invention provides a novel polyhydroxyalkanoate (PHA) containing a 3-hydroxyalkanoic unit which has at its side chain terminal a substituted phenylsulfinyl group and/or a substituted phenylsulfonyl group, and a production process thereof. The novel PHA can be produced by oxidizing with a peroxide a biosynthetic PHA containing a 3-hydroxyalkanoic unit which has at its side chain terminal a substituted phenylsufanyl group. The novel PHA has a superior function as a charge control agent, besides is biodegradable, hence is contributable to environmental conservation.Type: GrantFiled: April 29, 2002Date of Patent: October 26, 2004Assignee: Canon Kabushiki KaishaInventors: Takeshi Imamura, Etsuko Sugawa, Tetsuya Yano, Takashi Kenmoku
-
Patent number: 6777213Abstract: A process for recovering carboxylic acids from an aqueous mixture such as a fermentation broth using a solvent containing at least one olefin without the need for first removing the spent microorganism cells is provided. A co-solvent which increases the partition coefficient of the solvent relative to the carboxylic acid may optionally be included. The resulting carboxylic acid is hydrogenated to produce a saturated carboxylic acid.Type: GrantFiled: August 13, 2003Date of Patent: August 17, 2004Assignee: Cognis CorporationInventor: Michael D. Staley
-
Patent number: 6773910Abstract: Described are new micro-organisms and a new enzyme capable of using as sole source of nitrogen the propionic acid amide of formula (VI), in racemate form or as optically active isomers. Described also is a method of preparing (S)- or (R)-3,3,2-trifluoro-2-hydroxy-2-methylpropionic acid of formulas (I) and (II) starting from trifluoroaceto-acetic ester. The first three process steps are chemical, the fourth process step microbiological.Type: GrantFiled: December 30, 1999Date of Patent: August 10, 2004Inventors: Walter Brieden, Andrew Naughton, Karen Robins, Nicholas Shaw, Andreas Tinschert, Thomas Zimmermann
-
Publication number: 20040077062Abstract: An enzymatic system comprised of glucose oxidase and a catalase of the same or different sources to result in the complete conversion of glucose to gluconic acid at a glucose concentration greater than 25% (w/w) ds. The resultant gluconic acid, which is essentially free from impurities normally associated with the fermentation process, is then spray granulated to produce a low-dust dry product.Type: ApplicationFiled: July 2, 2003Publication date: April 22, 2004Inventors: Oreste J. Lantero, Jayarama K. Shetty
-
Publication number: 20040029214Abstract: An objective of the present invention is to provide a method of producing soyasapogenol B and to provide novel microorganisms. The present invention provides a method of producing soyasapogenol B comprising the steps of culturing microorganisms that belong to genus Neocosmospora or genus Eupenicillium, in a medium containing a glycoside having soyasapogenol B as an aglycone, and then collecting soyasapogenol B from the resulting culture.Type: ApplicationFiled: November 19, 2002Publication date: February 12, 2004Inventors: Takashi Yaguchi, Goh Tsujiuchi, Nobuaki Kushida, Masato Kani
-
Publication number: 20030203454Abstract: The present invention provides means for the production of desired end-products of in vitro and/or in vivo bioconversion of biomass-based feed stock substrates, including but not limited to such materials as starch and cellulose. In particularly preferred embodiments, the methods of the present invention do not require gelatinization and/or liquefaction of the substrate.Type: ApplicationFiled: February 6, 2003Publication date: October 30, 2003Inventors: Gopal K. Chotani, Manoj Kumar, Jeff P. Pucci, Karl J. Sanford, Jayarama K. Shetty
-
Patent number: 6630330Abstract: Herein is disclosed a method of generating ascorbic acid from yeast. In one embodiment, the yeast is a Zygosaccharomyces spp. or a Kluyveromyces spp. growing in a medium comprising an ascorbic acid precursor. In a second embodiment the yeast is a recombinant yeast growing in a medium comprising an ascorbic acid precursor. Preferably the recombinant yeast is transformed with a coding region encoding an enzyme selected from L-galactose dehydrogenase (LGDH), L-galactono-1,4-lactone dehydrogenase (AGD), D-arabinose dehydrogenase (ARA), D-arabinono-1,4-lactone oxidase (ALO) or L-gulono-1,4-lactone oxidase (RGLO). The ascorbic acid precursor is preferably D-glucose, L-galactose, L-galactono-1,4-lactone, or L-gulono-1,4-lactone. In another preferred embodiment the ascorbic acid is accumulated in the medium at levels greater than background. Preferably, the yield of the conversion of the precursor to ascorbic acid is preferably at least about 35%.Type: GrantFiled: August 2, 2000Date of Patent: October 7, 2003Assignee: Biopolo S.C.a.R.L.Inventors: Danilo Porro, Michael Sauer
-
Patent number: 6599722Abstract: The present invention relates to non-fermentative methods for the production of ASA intermediates, KDG, DKG and KLG and methods for the regeneration of co-factor. The invention provides genetically engineered host cells comprising heterologous nucleic acid encoding enzymes useful in the process.Type: GrantFiled: December 22, 1998Date of Patent: July 29, 2003Assignee: Genencor International, Inc.Inventors: Matthew Grant Boston, Barbara A. Swanson
-
Publication number: 20030073206Abstract: The invention relates to a biocatalytic process for the oxidation of substituted monocyclic aromatic compounds to the corresponding carboxylic acids and related compounds. In a preferred embodiment the invention describes a biocatalytic process to produce 4-hydroxymethylbenzoic acid and 3-hydroxymethylbenzoic acid from p-xylene and m-xylene, respectively. 4-hydroxymethylbenzoic acid has been prepared by oxidizing p-xylene with a single recombinant microorganism containing the enzyme xylene monooxygenase.Type: ApplicationFiled: August 7, 2002Publication date: April 17, 2003Inventors: Michael G. Bramucci, Vasantha Nagarajan, Stuart M. Thomas
-
Patent number: 6541228Abstract: A process for purifying and concentrating a gluconic acid derivative, such as 2-keto-L-gulonic acid, comprising introducing a non-viable and/or acidified fermentation medium or an in-vitro reactor medium comprising at least the gluconic acid derivative and/or salt thereof to electrodialysis thereby purifying and concentrating the gluconic acid derivative.Type: GrantFiled: November 28, 2000Date of Patent: April 1, 2003Assignee: The Electrosynthesis Company, Inc.Inventors: J. David Genders, Ram Gopal, Dan M. Hartsough, Peter M. Kendall, William J. Long, Duane J. Mazur, Guillermo D. Zappi
-
Publication number: 20030040086Abstract: The invention provides methods and host cells for the production of ascorbic acid intermediates. The invention also provides host cells having a modification in a polynucleotide that uncouples the catabolic pathway from the oxidative pathway by deleting the encoding for an endogenous enzymatic activity that phosphorylates D-glucose at its 6th carbon and/or a polynucleotide that has deleted the encoding for endogenous enzymatic activity that phosphorylates D-gluconate at its 6th carbon. Such host cells are used for the production of products, such as, ascorbic acid intermediates. Nucleic acid and amino acid sequences with inactivated enzymatic activity which phosphorylates D-glucose at its 6th carbon and inactivated enzymatic activity which phosphorylates D-gluconate at its 6th carbon are provided.Type: ApplicationFiled: April 5, 2002Publication date: February 27, 2003Inventors: Timothy C. Dodge, Fernando Valle
-
Patent number: 6500649Abstract: A process for the conversion of an organic material comprising an oxidation step during which an organic material undergoes the oxidising action of an enzymatic means capable of generating hydrogen peroxide, wherein said oxidation step is carried out, wholly or partly, in the presence of 0.001% to 1% of a metal selected from ruthenium, palladium and mixtures thereof.Type: GrantFiled: December 1, 2000Date of Patent: December 31, 2002Assignee: Roquette FreresInventors: Catherine Fouache, Rodolphe Tamion, Guy Fleche, Didier Moine, Patrick Fuertes
-
Publication number: 20020127665Abstract: A method for producing substantially pure ammonium gluconate or metal gluconate that includes separating reagents for reuse from the enzymatically converted gluconate by ultrafiltrationType: ApplicationFiled: May 10, 2002Publication date: September 12, 2002Inventors: Chinmay Chatterjee, Nilu Prasad Chatterjee, Edward D. Furtado
-
Patent number: 6416981Abstract: A method for producing substantially pure ammonium gluconate or metal gluconate that includes separating reagents for reuse from the enzymatically converted gluconate by ultrafiltration.Type: GrantFiled: May 22, 2001Date of Patent: July 9, 2002Assignee: NEC PartnershipInventors: Chinmay Chatterjee, Nilu Prasad Chatterjee, Edward D. Furtado
-
Patent number: 6355453Abstract: Furanosides or pyranosides can be reacted with pyruvate and converted into sialic acids in good yields by an enzymatic synthesis, using a suitable aldolase, where the concentration of aldolase, per 50 mM of pyruvate, is 1 to 2,500 U*/ml. For example, 3-fluoroneuraminic acid and other 3,3-didesoxy-3-fluorononulopyranosonic acid derivatives can be prepared in this manner. The F-atom in the resulting sialic acid (which can be 19F or 19F and 18F) provides a label which makes possible studies of mammalian physiology and diagnosis of mammalian diseases.Type: GrantFiled: January 14, 2000Date of Patent: March 12, 2002Assignee: Forschungszentrum Julich GmbHInventors: Juliane Beliczey, Udo Kragl, Andreas Liese, Christian Wandrey, Kurt Hamacher, Heinz Hubert Coenen, Thomas Tierling
-
Patent number: 6353095Abstract: The present invention provides a ketoaldonic acid such as an octulosonic or nonulosonic acid having a formed stereogenic center of R configuration, as well as methods of synthesizing the same.Type: GrantFiled: September 17, 1992Date of Patent: March 5, 2002Assignee: The Scripps Research InstituteInventors: Chi-Huey Wong, Chun-Hung Lin
-
Patent number: 6320065Abstract: The invention relates to a process for the preparation of fatty acid partial esters of polyols, the fatty acid partial esters thus obtainable, and their use. The fatty acid partial esters (I) of polyols having at least 4 C atoms, at least one primary and at least one secondary alcohol group of the starting polyols are obtained in a process, where in a first process step the polyols are reacted with a fatty acid or a fatty acid derivative to give a fatty acid partial ester (II) and in a second process step the fatty acid partial esters (II) obtained are subjected to a selective enzymatic cleavage of primary ester groups.Type: GrantFiled: May 7, 1999Date of Patent: November 20, 2001Assignee: Goldschmidt AGInventors: Burghard Gruning, Geoffrey Hills
-
Patent number: 6280984Abstract: An isolated nucleic acid constructs encoding cellulytic enzymes derived from a strain of Bacillus agaradherens, recombinant vectors and host cells comprising such constructs, and methods for obtaining cellulytic enzymes.Type: GrantFiled: January 7, 1999Date of Patent: August 28, 2001Assignee: Novozymes A/SInventors: Helle Outtrup, Claus Dambmann, Arne Agerlin Olsen, Henrik Bisgård-Frantzen, Martin Schülein, Per Linaa Jorgensen, Mads E. Bjoernvad
-
Patent number: 6271007Abstract: The invention relates to novel yeast strains having a reduced ability to metabolize xylitol. The invention further relates to the use of said strains for the production of xylitol.Type: GrantFiled: February 7, 1994Date of Patent: August 7, 2001Assignee: Xyrofin OyInventors: Juha Apajalahti, Matti Leisola
-
Patent number: 6268183Abstract: The invention discloses a two-step process for recovery of thuringiensin, comprising adsorbing the thuringiensin from fermentation broth by calcium silicate, and dissociating the thuringiensin by dibasic sodium phosphate. The resulting thuringiensin can be further purified by using semi-preparative HPLC and electrodialysis to remove the excess salts from the recovered thuringiensin solution.Type: GrantFiled: June 2, 2000Date of Patent: July 31, 2001Assignee: National Science CouncilInventors: Yew-Min Tzeng, Bing-Lan Liu, Shyuan-Shuenn Huang, Cheng-Ming Liu, Hung-Yieng Tsun
-
Patent number: 6207438Abstract: The invention relates to a process for the preparation of a product and to the product itself to prevent and care for skin disorders. The process includes using a natural sodium alginate extract, and the submission of this extract to at least on depolymerization treatment. The resulting product includes oligo-alginate chains and uronic acids. The product is used to treat cutaneous rashes, allergic reactions to cosmetic compositions, and the cutaneous effects of aging.Type: GrantFiled: May 5, 1998Date of Patent: March 27, 2001Assignee: Codif International SAInventors: Jean Gedouin, Romuald Vallee
-
Patent number: 6187570Abstract: A process for purifying and concentrating a gluconic acid derivative, such as 2-keto-L-gulonic acid, comprising introducing a non-viable and/or acidified fermentation medium or an in-vitro reactor medium comprising at least the gluconic acid derivative and/or salt thereof to electrodialysis thereby purifying and concentrating the gluconic acid derivative.Type: GrantFiled: May 25, 1999Date of Patent: February 13, 2001Assignee: The Electrosynthesis Company, Inc.Inventors: J. David Genders, Ram Gopal, Dan M. Hartsough, Peter M. Kendall, William J. Long, Duane J. Mazur, Guillermo D. Zappi
-
Patent number: 6146860Abstract: A process for producing L-ascorbic acid (vitamin C) from 2-keto-L-gulonic acid or D-erythorbic acid from 2-keto-D-gluconic acid by contacting 2-keto-L-gulonic acid or 2-keto-D-gluconic acid, respectively, in solution with a lactonase, particularly one belonging to the enzyme class EC 3.1.1.x, according to the classification of Enzyme Nomenclature. The solvent for this reaction can be water, an aqueous alcohol, a non-alcoholic organic solvent or a mixture of an aqueous alcohol and a non-alcoholic organic solvent. The contacting is generally performed in a temperature range of 0.degree. C. to 120.degree. C. and a pH range of 1.5 to 12. In each case the starting material can be in the form of the free acid, the sodium salt, or the calcium salt. The so-produced vitamin C has very well known uses, and the alternatively produced D-erythorbic acid is useful as an antioxidant for food additives.Type: GrantFiled: January 18, 2000Date of Patent: November 14, 2000Assignee: Roche Vitamins Inc.Inventors: Akira Asakura, Tatsuo Hoshino, Tatsuya Kiyasu, Masako Shinjoh
-
Patent number: 6143533Abstract: Disclosed is an efficient and economical method for the preparation of N-glycolyl neuraminic acid in a high purity from an inexpensive abundant source material. The method comprises dispersing body tissues of an echinodermatous marine animal Cucumaria echinata in an aqueous medium, preferably, using a dry powder of the tissues prepared in advance, in which the tissues are proteolytically decomposed to isolate N-glycolyl neuraminic acid in the form of an aqueous solution containing polypeptides as a by-product, followed by separation of N-glycolyl neuraminic acid from the aqueous solution by removing the polypeptides and purification of the compound in a process utilizing an ion-exchange treatments.Type: GrantFiled: March 13, 2000Date of Patent: November 7, 2000Assignee: Agency of Industrial Science and TechnologyInventors: Toshihisa Sumi, Hideki Ohba, Toru Ikegami, Masao Shibata, Tsuyoshi Sakaki, Imre Sallay, Sung Soo Park
-
Patent number: 6004784Abstract: This invention describes a low cost biofermentation medium, and an economical method using the medium, for the manufacture of .alpha., .omega.-alkanedicarboxylic acids. The invention provides a biofermentation medium and a method of bioproduction for these important diacids which makes their large scale commercial production economically feasible using a biocatalyst. This method of production obviates the need for chemical synthesis using expensive starting materials from fossil fuels, and does not generate a costly hazardous waste stream.Type: GrantFiled: September 14, 1998Date of Patent: December 21, 1999Assignee: General Electric Co.Inventors: David Paul Mobley, Gary Keith Shank
-
Patent number: 5998179Abstract: An enzymatic system comprised of glucose oxidase and a catalase of the same or different sources to result in the complete conversion of glucose to gluconic acid at a glucose concentration greater than 25% (w/w) ds. The resultant gluconic acid, which is essentially free from impurities normally associated with the fermentation process, is then spray granulated to produce a low-dust dry product.Type: GrantFiled: October 15, 1997Date of Patent: December 7, 1999Assignee: Genencor International, Inc.Inventors: Oreste J. Lantero, Jayarama K. Shetty
-
Patent number: 5932463Abstract: The present invention relates to a novel alcohol/aldehyde dehydrogenase (hereinafter referred to as AADH), a process for producing the same and a process for producing aldehydes, carboxylic acids and ketones, especially 2-keto-L-gulonic acid (hereinafter referred to as 2-KGA) utilizing said enzyme.Type: GrantFiled: June 20, 1997Date of Patent: August 3, 1999Assignee: Roche Vitamins Inc.Inventors: Akira Asakura, Tatsuo Hoshino
-
Patent number: 5900366Abstract: A process for the fed batch production of a sophorolipid composition is described, in which culturing takes place of at least one Candida bombicola strain in a culture medium incorporating a sugar and a nitrogen source and said cultured strain is exposed in a reaction zone to a supply of an appropriate substrate under adequate aeration, temperature and pH conditions and at least once the following sequence is performed: a) the strain is continuously supplied with substrate at a supply rate in the reaction zone between 0.Type: GrantFiled: June 18, 1993Date of Patent: May 4, 1999Assignee: Institut Fran.cedilla.ais Du PetroleInventors: Remy Marchal, Jeannine Lemal, Caroline Sulzer, Anne-Marie Davila
-
Patent number: 5900370Abstract: The present invention is directed to methods for the production of ascorbic acid by culturing organisms of the genus Prototheca and recovering ascorbic acid from the fermentation medium.Type: GrantFiled: June 7, 1995Date of Patent: May 4, 1999Assignee: Bio-Technical ResourcesInventor: Jeffrey Running
-
Patent number: 5897995Abstract: An enzymatic process for the conversion of glucose into gluconic acid, uses concentrated glucose solutions. The process employs a combination of glucose oxidase and catalase enzymes which may be obtained from an Aspergilltus niger strain and has a high ratio of catalase;glucose oxidase activity. The enzymatic process requires less time than conventional fermentation processes, the yield of the conversion is close to 100% and the obtained gluconic acid/gluconate solutions do not contain impurities.Type: GrantFiled: April 16, 1997Date of Patent: April 27, 1999Assignee: Gist-brocades, B.V.Inventors: Albert J. Vroemen, Marc Beverini
-
Patent number: 5858601Abstract: A process for the preparation of toner comprising(i) blending (a) a colorant dispersion containing a first ionic surfactant with (b) a latex emulsion comprised of an aqueous dispersion of core-shell polymer particles with a crosslinked polymer core and a linear polymer shell, and optional nonionic surfactant and a second ionic surfactant with a charge polarity opposite to that of said first ionic surfactant in said colorant dispersion;(ii) heating the resulting mixture at about below the glass transition temperature (Tg) of the linear latex shell polymer to form aggregates; and(iii) subsequently heating said aggregates about above the Tg of the linear latex shell polymer to effect coalescence and fusion of said aggregates.Type: GrantFiled: August 3, 1998Date of Patent: January 12, 1999Assignee: Xerox CorporationInventors: Beng S. Ong, T. Hwee Ng, Walter Mychajlowskij, Raj D. Patel, Patricia A. Burns
-
Patent number: 5859235Abstract: The invention relates to a novel substance with activity against insect pests of the order Diptera. The invention further relates to the substance which acts together with a Bacillus related pesticide, a chemical pesticide and/or a virus with pesticidal properties. The invention further relates to a novel strain(s) of Bacillus thuringiensis which produces such a substance. The invention further relates to pesticidal compositions comprising the substance and a pesticidal carrier, or the substance and a Bacillus related pesticide, a chemical pesticide and/or a virus with pesticidal properties as well as methods of using the pesticidal compositions to control a pest.Type: GrantFiled: July 11, 1994Date of Patent: January 12, 1999Assignee: Abbott LaboratoriesInventors: Chi-Li Liu, William D. Lidster, Carmen Sanchez Lopez
-
Patent number: 5859262Abstract: The invention provides a process for the recovery of erythorbic acid from an aqueous feed solution containing values of erythorbic acid at a concentration of less than 0.7 mol/kg, comprising adsorbing a major portion of said erythorbic acid with a solid phase adsorbent resin selected from resins carrying a pyridine function and resins of similar or weaker basicity; separating said erythorbic acid-containing resin from residual aqueous solution, and subjecting said erythorbic acid-containing resin to a desorbing operation with a neutral solvent at a temperature of at least 20.degree. C. higher than the temperature at which said adsorption is carried out, whereby there is obtained a solution of erythorbic acid in solvent in which the concentration of erythorbic acid is at least equal to its concentration in said aqueous feed solution.Type: GrantFiled: November 26, 1997Date of Patent: January 12, 1999Assignee: Yissum Research Development CompanyInventors: Aharon Meir Eyal, Asher Vitner, Tal Reuveni, Betty Hazan