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: 11802275
    Abstract: Reactions are disclosed herein comprising water, alpha-glucose-1-phosphate (alpha-G1P), an acceptor molecule, and an alpha-1,4-glucan phosphorylase. Novel alpha-1,4-glucan phosphorylase enzymes are also disclosed. Additional disclosures herein regard sucrose phosphorylase enzymes and methods of use thereof to produce alpha-G1P.
    Type: Grant
    Filed: July 18, 2019
    Date of Patent: October 31, 2023
    Assignee: Danisco US Inc.
    Inventors: Slavko Kralj, Zheyong Yu, Zhenghong Zhang
  • Publication number: 20230093634
    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: September 1, 2022
    Publication date: March 23, 2023
    Inventors: Luis Fernando Romero Millan, Susan Arent Lund, Brian Soegaard Laursen, Elijah Gituanjah Kiarie, Zhenghong Zhang, Rosalyn Lau, Zheyong Yu, Floor Klaaske Kooy, Jan Hendrik Van Tuijl, Bart Christiaan Koops, Mads Brogger Pedersen, Soren Dalsgaard
  • Patent number: 11473116
    Abstract: Reaction compositions are disclosed herein comprising at least water, beta-glucose -1-phosphate (beta-G1P), an acceptor molecule, and an alpha-1,3-glucan phosphorylase enzyme. These reactions can synthesize oligosaccharides and polysaccharides with alpha-1,3 glycosidic linkages. Further disclosed are alpha-1,3-glucan phosphorylase enzymes and methods of use thereof.
    Type: Grant
    Filed: October 19, 2020
    Date of Patent: October 18, 2022
    Assignee: NUTRITION & BIOSCIENCES USA 4, INC.
    Inventors: Zheyong Yu, Slavko Kralj, Zhenghong Zhang, Laurie A. Howe
  • Publication number: 20220195399
    Abstract: Reaction compositions are disclosed herein comprising at least water, alpha-glucose-1-phosphate (alpha-G1P), an acceptor molecule, and a beta-1,3-glucan phosphorylase enzyme. These reactions can synthesize oligosaccharides and polysaccharides with beta-1,3 glycosidic linkages. Further disclosed are methods of isolating beta-1,3-glucan.
    Type: Application
    Filed: November 17, 2021
    Publication date: June 23, 2022
    Inventors: Zheyong Yu, Slavko Kralj, Natnael Behabtu, Zhenghong Zhang, Laurie A. Howe
  • Patent number: 11180740
    Abstract: Reaction compositions are disclosed herein comprising at least water, alpha-glucose-1-phosphate (alpha-G1P), an acceptor molecule, and a beta-1,3-glucan phosphorylase enzyme. These reactions can synthesize oligosaccharides and polysaccharides with beta-1,3 glycosidic linkages. Further disclosed are methods of isolating beta-1,3-glucan.
    Type: Grant
    Filed: April 15, 2019
    Date of Patent: November 23, 2021
    Assignee: DANISCO US INC
    Inventors: Zheyong Yu, Slavko Kralj, Natnael Behabtu, Zhenghong Zhang, Laurie A Howe
  • Publication number: 20210277374
    Abstract: A xylanase-containing feed additive for cereal animal feed is described to facilitate degradation of insoluble glucuronoxylan.
    Type: Application
    Filed: July 1, 2019
    Publication date: September 9, 2021
    Inventors: Susan Arent LUND, Marion BERNARDEAU, Zheyong YU, Zhen QIAN
  • Publication number: 20210207184
    Abstract: Reaction compositions are disclosed herein comprising at least water, beta-glucose-1-phosphate (beta-G1P), an acceptor molecule, and an alpha-1,3-glucan phosphorylase enzyme. These reactions can synthesize oligosaccharides and polysaccharides with alpha-1,3 glycosidic linkages. Further disclosed are alpha-1,3-glucan phosphorylase enzymes and methods of use thereof.
    Type: Application
    Filed: October 19, 2020
    Publication date: July 8, 2021
    Inventors: ZHEYONG YU, SLAVKO KRALJ, ZHENGHONG ZHANG, LAURIE A. HOWE
  • Publication number: 20210163902
    Abstract: Reactions are disclosed herein comprising water, alpha-glucose-1-phosphate (alpha-G1P), an acceptor molecule, and an alpha-1,4-glucan phosphorylase. Novel alpha-1,4-glucan phosphorylase enzymes are also disclosed. Additional disclosures herein regard sucrose phosphorylase enzymes and methods of use thereof to produce alpha-G1P.
    Type: Application
    Filed: July 18, 2019
    Publication date: June 3, 2021
    Inventors: Slavko KRALJ, Zheyong YU, Zhenghong ZHANG
  • Patent number: 10927392
    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: August 23, 2019
    Date of Patent: February 23, 2021
    Assignee: DUPONT INDUSTRIAL BIOSCIENCES USA, LLC
    Inventors: Natnael Behabtu, Ayrookaran J. Poulose, Zheyong Yu, Zhenghong Zhang
  • Patent number: 10907185
    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: Grant
    Filed: May 22, 2015
    Date of Patent: February 2, 2021
    Assignee: DUPONT INDUSTRIAL BIOSCIENCES USA, LLC
    Inventors: Qiong Cheng, Robert Dicosimo, Arthur Ouwehand, Zheng You, Jian Ping Lai, Zheyong Yu, Zhenghong Zhang
  • Patent number: 10808269
    Abstract: Reaction compositions are disclosed herein comprising at least water, beta-glucose-1-phosphate (beta-G1P), an acceptor molecule, and an alpha-1,3-glucan phosphorylase enzyme. These reactions can synthesize oligosaccharides and polysaccharides with alpha-1,3 glycosidic linkages. Further disclosed are alpha-1,3-glucan phosphorylase enzymes and methods of use thereof.
    Type: Grant
    Filed: February 21, 2019
    Date of Patent: October 20, 2020
    Assignee: DANISCO US INC
    Inventors: Zheyong Yu, Slavko Kralj, Zhenghong Zhang, Laurie A. Howe
  • Publication number: 20200318092
    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: April 3, 2020
    Publication date: October 8, 2020
    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, SOREN DALSGAARD
  • Patent number: 10612014
    Abstract: The present invention relates to a method for solubilizing 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, homolog, 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: Grant
    Filed: December 15, 2017
    Date of Patent: April 7, 2020
    Assignee: DUPONT NUTRITION BIOSCIENCES APS
    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
  • Publication number: 20200080121
    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: August 23, 2019
    Publication date: March 12, 2020
    Inventors: NATNAEL BEHABTU, AYROOKARAN J. POULOSE, ZHEYONG YU, ZHENGHONG ZHANG
  • Patent number: 10472657
    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: May 24, 2018
    Date of Patent: November 12, 2019
    Assignee: DUPONT INDUSTRIAL BIOSCIENCES USA, LLC
    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: 20190322990
    Abstract: Reaction compositions are disclosed herein comprising at least water, alpha-glucose-1-phosphate (alpha-G1P), an acceptor molecule, and a beta-1,3-glucan phosphorylase enzyme. These reactions can synthesize oligosaccharides and polysaccharides with beta-1,3 glycosidic linkages. Further disclosed are methods of isolating beta-1,3-glucan.
    Type: Application
    Filed: April 15, 2019
    Publication date: October 24, 2019
    Inventors: ZHEYONG YU, SLAVKO KRALJ, NATNAEL BEHABTU, ZHENGHONG ZHANG, LAURIE A HOWE
  • Patent number: 10428362
    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: May 10, 2018
    Date of Patent: October 1, 2019
    Assignee: E. I. DU PONT DE NEMOURS AND COMPANY
    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: 20190264247
    Abstract: Reaction compositions are disclosed herein comprising at least water, beta-glucose-1-phosphate (beta-G1P), an acceptor molecule, and an alpha-1,3-glucan phosphorylase enzyme. These reactions can synthesize oligosaccharides and polysaccharides with alpha-1,3 glycosidic linkages. Further disclosed are alpha-1,3-glucan phosphorylase enzymes and methods of use thereof.
    Type: Application
    Filed: February 21, 2019
    Publication date: August 29, 2019
    Inventors: Zheyong Yu, Slavko Kralj, Zhenghong Zhang, Laurie A. Howe
  • Patent number: 10392641
    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: November 15, 2018
    Date of Patent: August 27, 2019
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Natnael Behabtu, Aryookaran J. Poulose, Zheyong Yu, Zhenghong Zhang
  • 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