Alpha-ketogulonic Acid (i.e., 2-ketogulonic Acid) Patents (Class 435/138)
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Publication number: 20140304859Abstract: Provided are isolated polypeptides having endoglucanase activity and polynucleotides encoding the polypeptides. Also provided are nucleic acid constructs, vectors and host cells comprising the polynucleotides as well as methods of producing and using the polypeptides.Type: ApplicationFiled: December 14, 2012Publication date: October 9, 2014Applicant: Novozymes Inc.Inventors: Ye Liu, Yu Zhang, Junxin Duan, Lan Tang
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Publication number: 20140248663Abstract: Provided are isolated polypeptides having cellobiohydrolase activity, catalytic domains and cellulose binding domains, and polynucleotides encoding the polypeptides, catalytic domains or cellulose binding domains. Also provided are nucleic acid constructs, vectors and host cells comprising the polynucleotides as well as methods of producing and using the polypeptides, catalytic domains or cellulose binding domains.Type: ApplicationFiled: November 15, 2012Publication date: September 4, 2014Inventors: Lan Tang, Junxin Duan, Yu Zhang, Ye Liu
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Publication number: 20140234906Abstract: The present invention relates to alpha-amylase variants. The present invention also relates to polynucleotides encoding the variants; nucleic acid constructs, vectors, and host cells comprising the polynucleotides; and methods of using the variants.Type: ApplicationFiled: October 17, 2012Publication date: August 21, 2014Inventors: Carsten Andersen, Signe Eskildsen Larsen, Esben Peter Friis, Peter Kamp Hansen, Henrik Friis Madsen, Anders Viksoe Nielsen, Pernille Ollendorf Micheelsen
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Publication number: 20140234914Abstract: The present invention relates to recombinant Trichoderma host cells producing Aspergillus fumigatus cellulolytic enzyme compositions and methods of producing and using the compositions.Type: ApplicationFiled: August 23, 2012Publication date: August 21, 2014Applicant: NOVOZYMES, INC.Inventors: Jeffrey Shasky, Brett McBrayer
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Publication number: 20140220635Abstract: The present invention also relates to polynucleotides encoding the variants; nucleic acid constructs, vectors, and host cells comprising the polynucleotides; and methods of using the variants.Type: ApplicationFiled: October 17, 2012Publication date: August 7, 2014Applicant: Novozymes A/SInventors: Carsten Andersen, Signe Larsen, Esben Peter Friis, Pernille Ollendorff Micheelsen, Anders Viksoe Nielsen, Randall Deinhammer, Xinyu Shen
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Publication number: 20140170718Abstract: The present invention concerns multimeric oxidoreductase complexes which function in the enzymatic conversion of a carbon substrate, said complexes having a dehydrogenase subunit and a cytochrome C subunit. The invention further relates to polynucleotides coding for the multimeric complexes and methods of use thereof.Type: ApplicationFiled: November 11, 2013Publication date: June 19, 2014Applicant: Danisco US Inc.Inventors: Robert M. CALDWELL, M. Harunur RASHID, Fernando VALLE
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Publication number: 20140141471Abstract: The present invention relates to methods for degrading or converting a cellulosic material and for producing substances from the cellulosic material.Type: ApplicationFiled: May 18, 2012Publication date: May 22, 2014Applicant: Novozymes, Inc.Inventors: Feng Xu, William Widner, Ani Tejirian
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Patent number: 8685683Abstract: The present invention relates to newly identified genes that encode proteins that are involved in the synthesis of L-ascorbic acid (hereinafter also referred to as Vitamin C) and/or 2-keto-L-gulonic acid (hereinafter also referred to as 2-KGA). The invention also features polynucleotides comprising the full-length polynucleotide sequences of the novel genes and fragments thereof, the novel polypeptides encoded by the polynucleotides and fragments thereof, as well as their functional equivalents. The present invention also relates to the use of said polynucleotides and polypeptides as biotechno logical tools in the production of Vitamin C and/or 2-KGA from microorganisms, whereby a modification of said polynucleotides and/or encoded polypeptides has a direct or indirect impact on yield, production, and/or efficiency of production of the fermentation product in said microorganism.Type: GrantFiled: January 9, 2009Date of Patent: April 1, 2014Assignee: DSM IP Assets B.V.Inventors: Bastien Chevreux, Nigel John Mouncey
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Publication number: 20140075601Abstract: The present invention relates to alpha-amylases, nucleic acids encoding the alpha-amylases, methods of producing the alpha-amylases, and methods of using the alpha-amylases.Type: ApplicationFiled: October 28, 2013Publication date: March 13, 2014Applicant: NOVOZYMES A/SInventors: Carsten Andersen, Thomas Agersten Poulsen
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Publication number: 20130288300Abstract: Provided are isolated polypeptides having cellulolytic enhancing activity and isolated polynucleotides encoding the polypeptides. Also provided are nucleic acid constructs, vectors, and host cells comprising the polynucleotides as well as methods of producing and using the polypeptides.Type: ApplicationFiled: February 23, 2012Publication date: October 31, 2013Applicant: Novoozymes A/SInventors: Yu Zhang, Junxin Duan, Lan Tang, Wenping Wu
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Publication number: 20130203126Abstract: The present invention relates to alpha-amylases, nucleic acids encoding the alpha-amylases, methods of producing the alpha-amylases, and methods of using the alpha-amylases.Type: ApplicationFiled: April 5, 2013Publication date: August 8, 2013Applicant: NOVOZYMES A/SInventor: NOVOZYMES A/S
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Publication number: 20130203135Abstract: The present invention concerns multimeric oxidoreductase complexes which function in the enzymatic conversion of a carbon substrate, said complexes having a dehydrogenase subunit and a cytochrome C subunit. The invention further relates to polynucleotides coding for the multimeric complexes and methods of use thereof.Type: ApplicationFiled: December 6, 2012Publication date: August 8, 2013Applicant: DANISCO US INC.Inventor: Danisco US Inc.
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Patent number: 8497101Abstract: The use of the human or animal MCM9 gene, or parts of the gene, or transcripts thereof, or antisense nucleic acids able to hybridize with part of the gene or transcripts, or silencing RNA derived from parts of the transcripts and able to repress the MCM9 gene, or proteins or peptidic fragments translated from the transcripts, or antibodies directed against the proteins or peptidic fragments, for the preparation of a pharmaceutical composition for the treatment of a human or animal pathology linked to a dysfunction of the expression of the MCM9 gene, or of human or animal cancers.Type: GrantFiled: May 12, 2006Date of Patent: July 30, 2013Assignee: Centre National de la Recherche Scientifique (CNRS)Inventors: Marcel Mechali, Domenico Maiorano, Malik Lutzmann
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Publication number: 20130189734Abstract: The present invention provides isolated polypeptides having cellobiohydrolase activity and isolated polynucleotides encoding the polypeptides. The invention also provides nucleic acid constructs, vectors, and host cells comprising the polynucleotides as well as methods of producing and using the polypeptides.Type: ApplicationFiled: November 2, 2011Publication date: July 25, 2013Applicant: NOVOZYMES INC.Inventors: Ye Liu, Lan Tang, Junxin Duan
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Publication number: 20130183713Abstract: The present invention relates to isolated polypeptides having beta-glucosidase activity, beta-xylosidase activity, or beta-glucosidase and beta-xylosidase activity and isolated polynucleotides encoding the polypeptides. The invention also relates to nucleic acid constructs, vectors, and host cells comprising the polynucleotides as well as methods of producing and using the polypeptides.Type: ApplicationFiled: August 30, 2011Publication date: July 18, 2013Applicants: NOVOYZMES A/S, NOVOZYMES, INC.Inventor: Marc Morant
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Publication number: 20130157307Abstract: The invention relates to a process of fermenting plant material in a fermentation medium into a fermentation product using a fermenting organism, wherein one or more deamidases are present in the fermentation medium.Type: ApplicationFiled: August 2, 2011Publication date: June 20, 2013Applicants: NOVOZYMES NORTH AMERICA, INC., NOVOZYMES A/SInventors: Chee-Leong Soong, Shiro Fukuyama, Allan Noergaard, Preben Nielsen, Peter Rahbek Oestergaard
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Publication number: 20130157314Abstract: The present invention relates to compositions comprising: a polypeptide having cellulolytic enhancing activity and a heterocyclic compound. The present invention also relates to methods of using the compositions.Type: ApplicationFiled: August 5, 2011Publication date: June 20, 2013Applicant: NOVOZYMES, INC.Inventors: Feng Xu, Matthew Sweeney, Jason Quinlan
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Publication number: 20120270267Abstract: The present invention relates to alpha-amylase variants, polynucleotides encoding the variants and nucleic acid constructs, vectors, and host cells comprising the polynucleotides, and methods of using the variant enzymes.Type: ApplicationFiled: January 4, 2011Publication date: October 25, 2012Applicant: NOVOZYMES A/SInventors: Carsten Andersen, Thomas Agersten Poulsen
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Publication number: 20120264176Abstract: The present invention relates to alpha-amylases, nucleic acids encoding the alpha-amylases, methods of producing the alpha-amylases, and methods of using the alpha-amylases.Type: ApplicationFiled: January 4, 2011Publication date: October 18, 2012Applicant: Novozymes A/SInventors: Carsten Andersen, Thomas Agersten Poulsen
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Publication number: 20120264171Abstract: The present invention relates to variants of a parent alpha-amylase, the variant having improved stability or activity at low calcium conditions or at low pH.Type: ApplicationFiled: January 4, 2011Publication date: October 18, 2012Applicant: NOVOZYMES A/SInventor: Carsten Andersen
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Publication number: 20120258497Abstract: The present invention relates to alpha-amylase variants, polynucleotides encoding the variants and nucleic acid constructs, vectors, and host cells comprising the polynucleotides, and methods of using the variant enzymes.Type: ApplicationFiled: January 4, 2011Publication date: October 11, 2012Applicants: NOVOZYMES NORTH AMERICA, INC., NOVOZYMES A/SInventors: Carsten Andersen, Thomas Agersten Poulsen
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Publication number: 20120237979Abstract: The present invention relates to isolated polypeptides having cellulolytic enhancing activity and isolated polynucleotides encoding the polypeptides. The invention also relates to nucleic acid constructs, vectors, and host cells comprising the polynucleotides as well as methods of producing and using the polypeptides.Type: ApplicationFiled: September 30, 2010Publication date: September 20, 2012Applicant: NOVOZYMES A/SInventors: Junxin Duan, Kirk Matthew Schnorr, Wenping Wu
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Publication number: 20120214209Abstract: 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: April 27, 2012Publication date: August 23, 2012Applicant: Danisco US Inc.Inventors: Gopal K. Chotani, Manoj Kumar, Jeff P. Pucci, Karl J. Sanford, Jayarama K. Shetty
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Publication number: 20120064586Abstract: The present invention concerns multimeric oxidoreductase complexes which function in the enzymatic conversion of a carbon substrate, said complexes having a dehydrogenase subunit and a cytochrome C subunit. The invention further relates to polynucleotides coding for the multimeric complexes and methods of use thereof.Type: ApplicationFiled: September 9, 2011Publication date: March 15, 2012Inventors: Robert M. Caldwell, M. Harunur Rashid, Fernando Valle
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Publication number: 20120009635Abstract: 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: ApplicationFiled: September 9, 2011Publication date: January 12, 2012Applicant: Danisco US Inc.Inventors: Timothy C. Dodge, Manoj Kumar, M. Harunur Rashid, Fernando Valle
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Publication number: 20110256595Abstract: Methods, enzymes, recombinant microorganism, and microbial systems are provided for converting polysaccharides, such as those derived from biomass, into suitable monosaccharides or oligosaccharides, as well as for converting suitable monosaccharides or oligosaccharides into commodity chemicals, such as biofuels. Commodity chemicals produced by the methods described herein are also provided. Commodity chemical enriched, refinery-produced petroleum products are also provided, as well as methods for producing the same.Type: ApplicationFiled: March 25, 2011Publication date: October 20, 2011Applicant: Bio Architecture Lab, Inc.Inventors: Yasuo YOSHIKUNI, Yuki Kashiyama
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Patent number: 7960152Abstract: The invention provides biosynthetic routes to xylitol production that do not require pure D-xylose for synthesis and that can utilize inexpensive substrates such as hemicellulose hydrolysates.Type: GrantFiled: May 19, 2005Date of Patent: June 14, 2011Assignee: Biotechnology Research Development CorporationInventors: Paul Taylor, Ian Fotheringham, Nathan Wymer, Badal Saha, David Demirjian, Yoshikiyo Sakaibara, Francis Michael Racine
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Publication number: 20090023191Abstract: The present invention relates to newly identified genes that encode proteins that are involved in the synthesis of L-ascorbic acid (hereinafter also referred to as Vitamin C). The invention also features polynucleotides comprising the full-length polynucleotide sequences of the novel genes and fragments thereof, the novel polypeptides encoded by the polynucleotides and fragments thereof, as well as their functional equivalents. The present invention also relates to the use of said polynucleotides and polypeptides as biotechnological tools in the production of Vitamin C from microorganisms, whereby a modification of said polynucleotides and/or encoded polypeptides has a direct or indirect impact on yield, production, and/or efficiency of production of the fermentation product in said microorganism. Also included are methods/processes of using the polynucleotides and modified polynucleotide sequences to transform host microorganisms.Type: ApplicationFiled: February 10, 2006Publication date: January 22, 2009Inventors: Bastien Chevreux, Anne F. Mayer, Anja Meury, Nigel J. Mouncey, Masako Shinjoh
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Patent number: 7135315Abstract: The present invention relates to a novel DNA which encodes aldehyde dehydrogenase (SNDH), an expression vector containing the DNA and recombinant organisms containing said DNA. Furthermore, the present invention concerns a process for producing recombinant aldehyde dehydrogenase protein and a process for producing L-ascorbic acid (vitamin C) and/or 2-keto-L-gulonic acid (2-KGA) from L-sorbosone by using the recombinant aldehyde dehydrogenase protein or recombinant organisms containing the expression vector. Also provided is a process for the production of 2KGA with a microorganism in which the gene encoding said aldehyde dehydrogenase is disrupted.Type: GrantFiled: September 22, 2003Date of Patent: November 14, 2006Assignee: DSM IP Assets B.V.Inventors: Tatsuo Hoshino, Taro Miyazaki, Teruhide Sugisawa
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Patent number: 7109004Abstract: A process for preparing (R)-hydroxy ester (II) from alpha-keto ester I comprising adding the alpha-keto ester I to a mixture comprising the ketoreductase enzyme and non-ketoreductase enzyme components, wherein the ketoreductase enzyme has a molecular weight between 36000 and 38000, and wherein the ketoreductase enzyme has an N-terminal amino acid sequence selected from the group of sequences consisting of (SEQ. ID NO. 1) Ala-Ile-Pro-Asp-Asn-Ala-Val-Leu-Glu-Gly-Ser-Leu- Val-Lys-Val-Thr-Gly-Ala-Asn-Gly (SEQ. ID NO. 4) Met-Ala-Ile-Pro-Asp-Asn-Ala-Val-Leu-Glu-Gly-Ser- Leu-Val-Lys-Val-Thr-Gly-Ala-Asn-Gly, and (SEQ. ID NO. 2) Met-Ala-Lys-Ile-Asp-Asn-Ala-Val-Leu-Pro-Glu-Gly- Ser-Leu-Val-Leu-Val-Thr-Gly-Ala-Asn-Gly.Type: GrantFiled: July 8, 2003Date of Patent: September 19, 2006Assignee: Merck & Co., Inc.Inventors: Jeffrey C. Moore, Michael G. Sturr, Kathleen McLaughlin, Jaehon Kim
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Patent number: 7091013Abstract: The present invention discloses a process for producing sodium 2-keto-L-gulonate from sorbitol and recovering 2-keto-L-gulonic acid in high recovery yields, by controlled cation exchange treatment of the micro-organism free fermentation broth and/or adjusting PII of said purified fermentation broth, followed by direct crystallisation of 2-keto-L-gulonic acid monohydrate.Type: GrantFiled: August 2, 2002Date of Patent: August 15, 2006Assignee: Cerestar Holding B.V.Inventors: Jean-Claude Marie-Pierre Ghislain De Troostembergh, Ignace André Debonne, Willy Richard Obyn, Catherine Gwenaëlle Michelle Peuzet
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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
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Patent number: 6824996Abstract: The present invention provides for the production of ASA from yeast capable of producing ASA from KLG. The present invention provides methods for the production of ASA as well as recombinant yeast capable of producing ASA from a carbon source.Type: GrantFiled: December 18, 2001Date of Patent: November 30, 2004Assignee: Genencor International, Inc.Inventor: Manoj Kumar
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Patent number: 6730503Abstract: The present invention is directed to a recombinant enzymes having alcohol and aldehyde dehydrogenase activity which comprises one or mom recombinant polypeptides selected from the group consisting of polypeptides which are identified by SEQ ID NO 5, SEQ ID NO 6, SEQ ID NO 7, SEQ ID NO 8 and chimeric recombinant polypeptides that are a chimeric combination of at least two of the following amino acid sequences identified by SEQ ID NO 5, SEQ ID NO 6, SEQ ID NO 7, SEQ ID NO 8 and functional derivatives of the polypeptides identified above which contain addition, insertion, deletion and/or substitution of one or more amino acid residues, wherein said enzymatic polypeptides have said alcohol and aldehyde dehydrogenase activity. DNA molecules encoding the recombinant polypeptides, vectors comprising such DNA molecules, host cells transformed by such vectors and processes for the production of such recombinant enzymes are provided.Type: GrantFiled: December 22, 1999Date of Patent: May 4, 2004Assignee: Roche Vitamins Inc.Inventors: Akira Asakura, Tatsuo Hoshino, Setsuko Ojima, Masako Shinjoh, Noribumi Tomiyama
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Publication number: 20040014180Abstract: The invention relates to a method for the microbial production of metabolic products, polynucleotides from coryne-form bacteria and use thereof. According to the invention, by means of said method and polynucleotides it is possible to influence the synthesis of ATP in a controlled manner and also to control the synthesis of metabolic products. The invention relates to genes from Corynebacterium glutamicum coding for cytochrome aa3 oxidase and the cytochrome bc1 complex. The monocistronic ctaD gene codes for a 65 kDa protein, the primary structure of which displays all the typical properties of the sub-unit I of cytochrome aa3 oxidase. The genes which code for the sub-unit III of the cytochrome aa3 (ctaE) and the three characteristic sub-units of the cytochrome bc1 complex (qcrABC) are arranged in a group with the sequence ctaE-qcrCAB.Type: ApplicationFiled: August 1, 2003Publication date: January 22, 2004Inventors: Michael Bott, Axel Niebisch, Brigitte Bathe, Achim Marx, Thomas Hermann
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Patent number: 6670505Abstract: A process for recovering a desired organic acid from a solution includes the steps of: providing an aqueous solution including at least one desired organic acid or its acid anion; adjusting the proton concentration in the aqueous solution to a desired level, with the desired proton concentration being selected, at least in part, by the amount of available protons needed to associate with the acid anions of the desired organic acid(s) to be recovered and/or acid anions that are weaker than the desired organic acids; and recovering at least a portion of the at least one desired organic acid from the aqueous phase. The desired proton concentration can be based on the amount of available protons being greater than, less than or substantially equal, to the amount of protons needed to associate with the anion of the desired organic acid(s) and acid anions that are weaker than the desired organic acid(s).Type: GrantFiled: March 7, 2000Date of Patent: December 30, 2003Assignee: Eastman Chemical CompanyInventors: Nick Allen Collins, Mark Robert Shelton, George William Tindall, Steven Thomas Perri, Ruairi Seosamh O'Meadhra, Chester Wayne Sink, Bhaskar Krishna Arumugam, John Clark Hubbs
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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
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Publication number: 20020177197Abstract: 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: ApplicationFiled: December 22, 1998Publication date: November 28, 2002Inventors: MATTHEW GRANT BOSTON, BARBARA A. SWANSON
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Publication number: 20020090688Abstract: The present invention provides for the production of ASA from yeast capable of producing ASA from KLG. The present invention provides methods for the production of ASA as well as recombinant yeast capable of producing ASA from a carbon source.Type: ApplicationFiled: December 18, 2001Publication date: July 11, 2002Inventor: Manoj Kumar
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Publication number: 20020090689Abstract: The present invention provides for the production of ASA from yeast capable of producing ASA from KLG. The present invention provides methods for the production of ASA as well as recombinant yeast capable of producing ASA from a carbon source.Type: ApplicationFiled: December 18, 2001Publication date: July 11, 2002Inventor: Manoj Kumar
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Patent number: 6399340Abstract: A DNA derived from plasmid pF4, which contains a region involved in the control of autonomous replication in a bacterial cell belonging to the genus Gluconobactor, with or without a part of the polynucleotide region not essential for the autonomous replication therein, particularly, the same DNA comprising, as the region involved in the control of autonomous replication in the bacterial cell belonging to the genus Gluconobactor, a part or the entirety of the polynucleotide of nucleotide No. 2897-3969 region of Sequence Listing SEQ:ID No. 1. A plasmid vector containing this DNA, transformant transformed with this plasmid vector, and a method for producing a physiologically active substance comprising culturing this transformant.Type: GrantFiled: June 23, 2000Date of Patent: June 4, 2002Assignee: Fujisawa Pharmaceutical Co., Ltd.Inventors: Yoshimasa Saito, Yuji Noguchi, Koji Yoshikawa, Shinsuke Soeda
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Patent number: 6358715Abstract: The present invention provides for the production of ASA from yeast capable of producing ASA from KLG. The present invention provides methods for the production of ASA as well as recombinant yeast capable of producing ASA from a carbon source.Type: GrantFiled: December 4, 1998Date of Patent: March 19, 2002Assignee: Genencor International, Inc.Inventor: Manoj Kumar
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Patent number: 6319699Abstract: The present invention relates to a process for the production of 2-keto-L-gulonic acid by fermentative conversion of L-sorbose and/or D-sorbitol. The present invention further relates to novel bacterial strains useful in this process.Type: GrantFiled: April 13, 1999Date of Patent: November 20, 2001Inventors: Steven F. Stoddard, Hungming J. Liaw, John Eddington, Yueqin Yang
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Patent number: 6316231Abstract: The present invention relates to novel bacterial strains useful for the production of 2-keto-L-gulonic acid. The present invention further relates to the use of these strains for the production of 2-keto-L-gulonic acid by fermentative conversion of L-sorbose. The present invention further relates to the use of these novel bacterial strains for the production of pyrroloquinoline quinone and a nontoxic lipopolysaccharide. Also described is the strains of the present invention transformed by a vector.Type: GrantFiled: September 10, 1999Date of Patent: November 13, 2001Assignee: Archer-Daniels-Midland CompanyInventors: Steven F. Stoddard, Hungming J. Liaw, John D'Elia
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Patent number: 6271006Abstract: The present invention is directed toward efficient, high-yield processes for making ascorbic acid, 2-keto-L-gulonic acid, and esters of 2-keto-L-gulonic acid. The processes comprise reacting the appropriate starting materials with a hydrolase enzyme catalyst such as a protease, an esterase, a lipase or an amidase.Type: GrantFiled: September 9, 1998Date of Patent: August 7, 2001Assignee: Eastman Chemical CompanyInventor: John Clark Hubbs
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Patent number: 6238897Abstract: A process for the continuous production of 2-keto-L-gulonic acid or a salt thereof from D-sorbitol by fermentation with microorganisms in a nutrient medium containing D-sorbitol that is incubated in a first fermentation vessel with a microorganism capable of converting D-sorbitol to L-sorbose, whereafter the resulting fermentation broth containing L-sorbose is transferred to a second fermentation vessel where it is incubated with a microorganism capable of converting L-sorbose to 2-keto-L-gulonic acid. In a particularly preferred embodiment of this process, the fermentation broth from the first fermentation vessel is sterilized before being transferred to the second fermentation vessel. 2-keto-L-gulonic acid is a valuable intermediate for the production of vitamin C.Type: GrantFiled: July 13, 1999Date of Patent: May 29, 2001Assignee: Roche Vitamins Inc.Inventor: Markus Rückel
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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
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Patent number: 6022719Abstract: The present invention is directed toward efficient, high-yield processes for making ascorbic acid, 2-keto-L-gulonic acid, and esters of 2-keto-L-gulonic acid. The processes comprise reacting the appropriate starting materials with a hydrolase enzyme catalyst such as a protease, an esterase, a lipase or an amidase.Type: GrantFiled: August 27, 1998Date of Patent: February 8, 2000Assignee: Eastman Chemical CompanyInventor: John Clark Hubbs
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Patent number: 5998180Abstract: Nitrilase enzymes are provided which have Km at pH 7.0 for acrylonitrile of 500 .mu.M or below. The enzymes also have Ki at pH 7.0 for ammonium acrylate of at least 100 mM. In particular, the nitrilases have a value of the ratio of the said Ki to the said Km of at least 200. Particularly preferred nitrilases are obtainable from the microorganisms Rhodococcus rhodochrous NCIMB 40757 or NCIMB 40833. These nitrilases can be used in processes of converting acrylonitrile to ammonium acrylate in aqueous or vapor form and for detecting low levels of nitrile in aqueous or vapor form.Type: GrantFiled: February 24, 1998Date of Patent: December 7, 1999Assignee: Ciba Specialty Chemicals Water Treatments LimitedInventors: Yvonne Christine Armitage, Jonathan Hughes, Neil Andrew Webster
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Patent number: 5989891Abstract: The present invention relates to a process for the production of 2-keto-L-gulonic acid by fermentative conversion of L-sorbose and/or D-sorbitol. The present invention further relates to novel bacterial strains useful in this process.Type: GrantFiled: July 11, 1997Date of Patent: November 23, 1999Assignee: Archer-Daniels-Midland CompanyInventors: Hungming J. Liaw, John Eddington, Yueqin Yang