Patents by Inventor Zheyong Yu

Zheyong Yu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10294466
    Abstract: The present disclosure relates to polypeptides having alpha-glucosidase activity isolated, derived or derivable from Rasamsonia or engineered polypeptides having alpha-glucosidase activity isolated, derived or derivable from Rasamsonia homologs. The present disclosure also pertains to polynucleotides encoding the polypeptides, nucleic acid constructs, vectors, host cells and mutant cells comprising the polynucleotides. The disclosure further pertains to compositions comprising such polypeptides, methods of producing the polypeptides and compositions, as well as methods for using such polypeptides and compositions for industrial applications.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: May 21, 2019
    Assignee: DANISCO US INC.
    Inventors: Zheyong Yu, Zhenghong Zhang, Jing Ge, Zhen Qian, Guoqing Liu, Zhiyong Xie, Zhongmei Tang
  • Publication number: 20190100782
    Abstract: Enzymatic reactions are disclosed herein comprising water, glucose-1-phosphate, cellodextrin, and at least one cellodextrin phosphorylase enzyme comprising an amino acid sequence that is at least 90% identical to SEQ ID NO:2 or SEQ ID NO:6. These reactions produce a low molecular weight, insoluble cellulose with enhanced features.
    Type: Application
    Filed: November 15, 2018
    Publication date: April 4, 2019
    Inventors: Natnael Behabtu, Ayrookaran J. Poulose, Zheyong Yu, Zhenghong Zhang
  • Publication number: 20190090525
    Abstract: The present invention relates to a method of preparing a corn based product said method comprising contacting a plant composition comprising (consisting of or consisting essentially of) corn or a corn by-product or a combination thereof with a xylanase comprising: i) a polypeptide as set forth in SEQ ID No. 8 or SEQ ID No. 7 or SEQ ID No. 6; or ii) a variant, fragment homologue, fragment or derivative thereof having at least 85% identity with SEQ ID No. 8 or SEQ ID No. 7 or SEQ ID No. 6; or with a xylanase encoded by: a) a nucleotide sequence shown herein as SEQ ID No. 3. SEQ ID No. 2 or SEQ ID No. 1; or b) a nucleotide sequence which can hybridize to the complement of SEQ ID No. 3. SEQ ID No. 2 or SEQ ID No. 1 under high stringency conditions: or c) a nucleotide sequence which has at least 80% identity with SEQ ID No. 3. SEQ ID No. 2 or SEQ ID No. 1. The present invention further relates to the use of the enzyme to produce corn based feedstuffs.
    Type: Application
    Filed: October 10, 2018
    Publication date: March 28, 2019
    Inventors: Susan Arent Lund, Brian Soegaard Laursen, Elijah G. Kiarie, Luis Fernando Romero Millan, Zhenghong Zhang, Rosalyn Lau, Zheyong Yu, Mads Broegger Pedersen, Soeren Dalsgaard
  • Publication number: 20190048376
    Abstract: A method is disclosed for hydrolyzing an alpha-1,3 or alpha-1,6 glucosyl-glucose linkage in a saccharide (disaccharide or oligosaccharide). This method comprises contacting the saccharide with an alpha-glucosidase enzyme such as transglucosidase under suitable conditions, during which contacting step the enzyme hydrolyzes at least one alpha-1,3 or alpha-1,6 glucosyl-glucose linkage of the saccharide. This method is useful for reducing the amount of oligosaccharides in a filtrate isolated from a glucan synthesis reaction, for example.
    Type: Application
    Filed: May 24, 2018
    Publication date: February 14, 2019
    Inventors: KEVIN D. NAGY, ERWIN F. COLUMBUS-HAGO, JAYARAMA K. SHETTY, SUSAN MARIE HENNESSEY, ROBERT DICOSIMO, LING HUA, RODRIGO RAMIREZ, ZHONGMEI TANG, ZHEYONG YU
  • Publication number: 20180334696
    Abstract: Compositions are disclosed herein comprising cellulose that has (i) a weight-average degree of polymerization (DPw) of about 10 to about 1000, (ii) a cellulose II crystal structure, and that is (iii) insoluble in an aqueous composition. Further disclosed are cellodextrin phosphorylase enzymes that synthesize this cellulose material. Methods of using cellulose for viscosity modification or film/coating applications are also disclosed.
    Type: Application
    Filed: December 15, 2015
    Publication date: November 22, 2018
    Inventors: Natnael Behabtu, Ayrookaran J. Poulose, Zheyong Yu, Zhenghong Zhang
  • Patent number: 10131929
    Abstract: Enzymatic reactions are disclosed herein comprising water, glucose-1-phosphate, cellodextrin, and at least one cellodextrin phosphorylase enzyme comprising an amino acid sequence that is at least 90% identical to SEQ ID NO:2 or SEQ ID NO:6. These reactions produce a low molecular weight, insoluble cellulose with enhanced features.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: November 20, 2018
    Assignee: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Natnael Behabtu, Ayrookaran J. Poulose, Zheyong Yu, Zhenghong Zhang
  • Publication number: 20180273999
    Abstract: A method is disclosed for hydrolyzing an alpha-1,5 glucosyl-fructose linkage in a saccharide (disaccharide or oligosaccharide) such as leucrose. This method comprises contacting the saccharide with an alpha-glucosidase enzyme such as transglucosidase or glucoamylase under suitable conditions, during which contacting step the enzyme hydrolyzes at least one alpha-1,5 glucosyl-fructose linkage of the saccharide. This method is useful for reducing the amount of leucrose in a filtrate isolated from a glucan synthesis reaction, for example.
    Type: Application
    Filed: May 10, 2018
    Publication date: September 27, 2018
    Inventors: KEVIN D NAGY, ERWIN F. COLUMBUS-HAGO, JAYARAMA K. SHETTY, SUSAN MARIE HENNESSEY, ROBERT DICOSIMO, LING HUA, RODRIGO RAMIREZ, ZHONGMEI TANG, ZHEYONG YU
  • Patent number: 9988657
    Abstract: A method is disclosed for hydrolyzing an alpha-1,3 or alpha-1,6 glucosyl-glucose linkage in a saccharide (disaccharide or oligosaccharide). This method comprises contacting the saccharide with an alpha-glucosidase enzyme such as transglucosidase under suitable conditions, during which contacting step the enzyme hydrolyzes at least one alpha-1,3 or alpha-1,6 glucosyl-glucose linkage of the saccharide. This method is useful for reducing the amount of oligosaccharides in a filtrate isolated from a glucan synthesis reaction, for example.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: June 5, 2018
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Kevin D Nagy, Erwin Columbus Hago, Jayarama K Shetty, Susan Marie Hennessey, Robert Dicosimo, Ling Hua, Rodrigo Ramirez, Zhongmei Tang, Zheyong Yu
  • Publication number: 20180148704
    Abstract: The present compositions and methods relate to a beta-mannanase from Bacillus hemicellulosilyticus, polynucleotides encoding the beta-mannanase, and methods of make and/or use thereof. Formulations containing the beta-mannanase are suitable for use in hydrolyzing lignocellulosic biomass substrates, especially those comprising a measurable level of galactoglucomannan (GGM) and/or glucomannan (GM).
    Type: Application
    Filed: January 16, 2018
    Publication date: May 31, 2018
    Inventors: STEVEN LE, LING HUA, ROSALYN LAU, ZHEN QIAN, ZHEYONG YU
  • Patent number: 9982284
    Abstract: A method is disclosed for hydrolyzing an alpha-1,5 glucosyl-fructose linkage in a saccharide (disaccharide or oligosaccharide) such as leucrose. This method comprises contacting the saccharide with an alpha-glucosidase enzyme such as transglucosidase or glucoamylase under suitable conditions, during which contacting step the enzyme hydrolyzes at least one alpha-1,5 glucosyl-fructose linkage of the saccharide. This method is useful for reducing the amount of leucrose in a filtrate isolated from a glucan synthesis reaction, for example.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: May 29, 2018
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Kevin D Nagy, Erwin Columbus Hago, Jayarama K Shetty, Susan Marie Hennessey, Robert Dicosimo, Ling Hua, Rodrigo Ramirez, Zhongmei Tang, Zheyong Yu
  • Publication number: 20180112203
    Abstract: The present teachings provide an amylase with maltogenic properties. Nucleic acids encoding the maltogenic amylase and variants thereof, expression vectors, formulations, and host cells are also provided. Additional embodiments of the present teachings provide various methods of use and methods of manufacturing.
    Type: Application
    Filed: November 15, 2013
    Publication date: April 26, 2018
    Applicant: DANISCO US INC.
    Inventors: RICHARD R. BOTT, LING HUA, ZHEN QIAN, CHRISTOPHER L. RIFE, JAYARAMA K. SHETTY, ZHONGMEI TANG, ZHEYONG YU, BO ZHANG
  • Publication number: 20180094253
    Abstract: The present invention relates to a method for solubilising arabinoxylan-containing material (particularly insoluble arabinoxylan-containing material), comprising admixing a xylan-containing material with a xylanase comprising a polypeptide sequence shown herein as SEQ ID No. 3, SEQ ID No. 2, SEQ ID No. 1, SEQ ID No. 9, SEQ ID No. 10, SEQ ID No. 11 or SEQ ID No. 15, or a variant, homologue, fragment or derivative thereof having at least 75% identity with SEQ ID No. 3 or SEQ ID No. 2 or SEQ ID No. 1 or SEQ ID No. 9 or SEQ ID No. 10 or SEQ ID No. 11 or SEQ ID No. 15; or a polypeptide sequence which comprises SEQ ID No. 3. SEQ ID No. 2, SEQ ID No. 1, SEQ ID No. 9, SEQ ID No. 10, SEQ ID No. 11 or SEQ ID No. 15 with a conservative substitution of at least one of the amino acids; or a xylanase which is encoded by a nucleotide sequence shown herein as SEQ ID No. 6, SEQ ID No. 5, SEQ ID No. 4, SEQ ID No. 12, SEQ ID No. 13, SEQ ID No. 14, SEQ ID No. 16, SEQ ID No. 17 or SEQ ID No.
    Type: Application
    Filed: December 15, 2017
    Publication date: April 5, 2018
    Inventors: LUIS FERNANDO ROMERO MILLAN, SUSAN ARENT LUND, BRIAN SOEGAARD LAURSEN, ELIJAH G. KIARIE, ZHENGHONG ZHANG, ROSALYN LAU, ZHEYONG YU, FLOOR K KOOY, JAN HENDRIK A VAN TUIJL, BART C KOOPS, MADS BROEGGER PEDERSEN, SOEREN DALSGAARD
  • Patent number: 9879245
    Abstract: The present compositions and methods relate to a beta-mannanase from Bacillus hemicellulosilyticus, polynucleotides encoding the beta-mannanase, and methods of make and/or use thereof. Formulations containing the beta-mannanase are suitable for use in hydrolyzing lignocellulosic biomass substrates, especially those comprising a measurable level of galactoglucomannan (GGM) and/or glucomannan (GM).
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: January 30, 2018
    Assignee: DANISCO US INC.
    Inventors: Ling Hua, Rosalyn Lau, Steven Le, Zhen Qian, Zheyong Yu
  • Publication number: 20180016563
    Abstract: The present disclosure relates to polypeptides having alpha-glucosidase activity isolated, derived or derivable from Rasamsonia or engineered polypeptides having alpha-glucosidase activity isolated, derived or derivable from Rasamsonia homologs. The present disclosure also pertains to polynucleotides encoding the polypeptides, nucleic acid constructs, vectors, host cells and mutant cells comprising the polynucleotides. The disclosure further pertains to compositions comprising such polypeptides, methods of producing the polypeptides and compositions, as well as methods for using such polypeptides and compositions for industrial applications.
    Type: Application
    Filed: February 25, 2016
    Publication date: January 18, 2018
    Applicant: DANISCO US INC.
    Inventors: Zheyong YU, Zhenghong ZHANG, Jing GE, Zhen QIAN, Guoqing LIU, Zhiyong XIE, Zhongmei TANG
  • Publication number: 20170327857
    Abstract: Enzymatic reactions are disclosed herein comprising water, glucose-1-phosphate, cellodextrin, and at least one cellodextrin phosphorylase enzyme comprising an amino acid sequence that is at least 90% identical to SEQ ID NO:2 or SEQ ID NO:6. These reactions produce a low molecular weight, insoluble cellulose with enhanced features.
    Type: Application
    Filed: December 15, 2015
    Publication date: November 16, 2017
    Inventors: Natnael Behabtu, Ayrookaran J. Poulose, Zheyong Yu, Zhenghong Zhang
  • Publication number: 20170314050
    Abstract: A method is disclosed for hydrolyzing an alpha-1,3 or alpha-1,6 glucosyl-glucose linkage in a saccharide (disaccharide or oligosaccharide). This method comprises contacting the saccharide with an alpha-glucosidase enzyme such as transglucosidase under suitable conditions, during which contacting step the enzyme hydrolyzes at least one alpha-1,3 or alpha-1,6 glucosyl-glucose linkage of the saccharide. This method is useful for reducing the amount of oligosaccharides in a filtrate isolated from a glucan synthesis reaction, for example.
    Type: Application
    Filed: February 26, 2015
    Publication date: November 2, 2017
    Inventors: KEVIN D NAGY, Erwin Columbus Hago, Jayarama K Shetty, Susan Marie Hennessey, Robert Dicosimo, Ling Hua, Rodrigo Ramirez, Zhongmei Tang, Zheyong Yu
  • Publication number: 20170198324
    Abstract: An enzymatically produced soluble ?-glucan fiber composition is provided suitable for use as a digestion resistant fiber in food and feed applications. The soluble ?-glucan fiber composition can be blended with one or more additional food ingredients to produce fiber-containing compositions. Methods for the production and use of compositions comprising the soluble ?-glucan fiber are also provided.
    Type: Application
    Filed: May 22, 2015
    Publication date: July 13, 2017
    Inventors: Qiong Cheng, Robert Dicosimo, Arthur Ouwehand, Zheng You, Jian Ping Lai, Zheyong YU, Zhenghong ZHANG
  • Publication number: 20160186221
    Abstract: The present compositions and methods relate to a beta-mannanase from Paenibacillus kribbensis, polynucleotides encoding the beta-mannanase, and methods of make and/or use thereof. Formulations containing the beta-mannanase are suitable for use in hydrolyzing lignocellulosic biomass substrates, especially those comprising a measurable level of galactoglucomannan (GGM) and/or glucomannan (GM).
    Type: Application
    Filed: December 2, 2013
    Publication date: June 30, 2016
    Applicant: DANISCO US INC.
    Inventors: Ling HUA, Rosalyn LAU, Steven LE, Zhen QIAN, Zheyong YU
  • Publication number: 20160115465
    Abstract: The present compositions and methods relate to a beta-mannanase from Bacillus hemicellulosilyticus, polynucleotides encoding the beta-mannanase, and methods of make and/or use thereof. Formulations containing the beta-mannanase are suitable for use in hydrolyzing lignocellulosic biomass substrates, especially those comprising a measurable level of galactoglucomannan (GGM) and/or glucomannan (GM).
    Type: Application
    Filed: December 2, 2013
    Publication date: April 28, 2016
    Applicant: Danisco US Inc.
    Inventors: Ling HUA, Rosalyn LAU, Steven LE, Zhen QIAN, Zheyong YU
  • Publication number: 20150351433
    Abstract: The present invention provides a xylanase comprising amino acid sequence as set forth in SEQ ID No.1, SEQ ID No.2 or SEQ ID No.8, and a nucleotide sequence encoding said xylanase shown as SEQ ID No.3, SEQ ID No.4 or SEQ ID No.5. The present invention also provides a method of preparing a corn based product comprising contacting a plant composition comprising corn or a corn by-product or a combination thereof with said xylanase.
    Type: Application
    Filed: August 3, 2012
    Publication date: December 10, 2015
    Applicant: DUPONT NUTRITION BIOSCIENCES APS
    Inventors: Susan Lund Arent, Brian Sogaard Laursen, Elijah Gituanjah Kiarie, Luis Fernando Romero Millan, Zhenghong Zhang, Rosalyn Lau, Zheyong Yu, Soren Dalsgaard