Patents by Inventor Zhongmei Tang

Zhongmei Tang 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).

  • Publication number: 20230365947
    Abstract: The present disclosure relates to a method and a composition comprising an esterase for enzymatic surface modification of a polyester. The present disclosure also relates to a method of degradation or hydrolysis of an insoluble plant material.
    Type: Application
    Filed: September 16, 2021
    Publication date: November 16, 2023
    Inventors: FENG GUO, HELONG HAO, BRADLEY KELEMEN, AMY DEMING LIU, KEFENG NI, ZHEN QIAN, ZHONGMEI TANG
  • Publication number: 20230340444
    Abstract: Described are a recombinant host cell, a composition comprising a glucoamylase and methods of saccharifying the starch substrate using the glucoamylase. Moreover, the disclosure also relates to a process of producing fermentation products and a method for increasing starch digestibility in an animal as well as a method of producing a fermented beverage. The glucoamylase or 1,4-alpha-D-glucan glucohydrolase (EC 3.2.1.3) is preferably from the Mucorales-clade, especially having high sequence identity to the glucoamylase from Saksenaea vasiformis.
    Type: Application
    Filed: April 19, 2021
    Publication date: October 26, 2023
    Inventors: Zhongmei TANG, Zhenghong ZHANG, Jing GE, Lilia BABE, Xingxiang XI, Helong HAO, Chao HUANG
  • Publication number: 20230340443
    Abstract: Described are methods and compositions relating to granular starch-converting glucoamylases and ?-amylases. The enzymes can be used to perform enzymatic starch hydrolysis of granular starch at or below the gelatinization temperature of insoluble granular starch.
    Type: Application
    Filed: January 6, 2023
    Publication date: October 26, 2023
    Inventors: Bart C. Koops, Paula Johanna Maria Teunissen, Marco Van Brussel-Zwijnen, Martijn Scheffers, Kees-Jan Guijt, Zhengzheng Zou, Zhongmei Tang, Zhen Qian, Jing Ge, Zhenghong Zhang
  • Publication number: 20230002749
    Abstract: Described are polypeptides having glucoamylase activity, compositions comprising such polypeptides, and methods of using such polypeptides and compositions.
    Type: Application
    Filed: November 9, 2017
    Publication date: January 5, 2023
    Inventors: Jacob Flyvholm Cramer, Jing Ge, Marc Anton Bernhard Kolkman, Igor Nikolaev, Jayarama K. Shetty, Zhongmei Tang, Wilhelmus Antonius Van Der Kleij, Zhiyong Xie, Bo Zhang, Zhengzheng Zou
  • Publication number: 20220396783
    Abstract: Described are a recombinant host cell, a composition comprising a glucoamylase and methods of saccharifying the starch substrate using the glucoamylase. Moreover, the disclosure also relates to a process of producing fermentation products and a method for increasing starch digestibility in an animal as well as a method of producing a fermented beverage.
    Type: Application
    Filed: April 13, 2022
    Publication date: December 15, 2022
    Inventors: Zhongmei TANG, Zhenghong ZHANG, Jing GE, Lilia BABE, Xingxiang XI, Helong HAO, Chao HUANG
  • Patent number: 11525151
    Abstract: Described are methods for saccharifying starch-containing materials using a glucoamylase, methods for producing fermentation products, and fermentation products produced by the method thereof as well as methods for increasing starch digestibility in a ruminant using at least one of the glucoamylases described herein.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: December 13, 2022
    Assignee: DANISCO US INC.
    Inventors: Jing Ge, Xiaogang Gu, Helong Hao, Karsten Matthias Kragh, Jinahua (Jalsen) Li, Wenting Li, Zhongmei Tang, Shukun Yu, Bo Zhong, Kun Zhong, Zhengzheng Zou
  • Publication number: 20220162657
    Abstract: Described are methods for saccharifying starch-containing materials using a glucoamylase, methods for producing fermentation products, and fermentation products produced by the method thereof as well as methods for increasing starch digestibility in a ruminant using at least one of the glucoamylases described herein.
    Type: Application
    Filed: December 7, 2021
    Publication date: May 26, 2022
    Inventors: Jing Ge, Xiaogang Gu, Helong Hao, Karsten Matthias Kraugh, Jinahua (Jalsen) Li, Wenting Li, Zhongmei Tang, Shukun Yu, Bo Zhang, Kun Zhong, Zhengzheng Zou
  • Publication number: 20210277434
    Abstract: Described are methods of saccharifying starch-containing materials using a glucoamylase, the methods of producing fermentation products and the fermentation products produced by the method thereof.
    Type: Application
    Filed: July 2, 2019
    Publication date: September 9, 2021
    Inventors: Zhongmei TANG, Qihui WU, Xingxiang XI, Zhenghong ZHANG
  • Publication number: 20210047664
    Abstract: Fungal glucoamylases from Aspergillus fumigatus—expressed in Trichoderma reesei host cells (AfGATR) are provided. Trichoderma reesei host cells express AfGATRs at higher, or at least comparable, levels to natively expressed AfGA Aspergillus fumigatus. AfGATRs, including AfGA1TR and AfGA2TR, exhibit high activity at elevated temperatures and at low pH, so AfGATRs can be used efficiently in a process of saccharification in the presence of alpha-amylase, such as Aspergillus kawachii alpha-amylase (AkAA). AfGATRs advantageously catalyze starch saccharification to an oligosaccharide composition significantly enriched in DP1 (i.e., glucose) compared to the products of saccharification catalyzed by Aspergillus niger glucoamylase (AnGA) or native AfGA expressed in Aspergillus fumigatus. AfGATRs such as AfGA1TR, AfGA2TR or a variant thereof can be used at a lower dosage than AnGA and natively expressed AfGAs to produce comparable levels of glucose.
    Type: Application
    Filed: August 25, 2020
    Publication date: February 18, 2021
    Inventors: JING GE, Ling Hua, Sung Ho Lee, Jalsen Li, Jayarama K. Shetty, Zhongmei Tang, Bo Zhang, Kun Zhong
  • Publication number: 20210040523
    Abstract: Described are methods for saccharifying starch-containing materials using a glucoamylase, methods for producing fermentation products, and fermentation products produced by the method thereof as well as methods for increasing starch digestibility in a ruminant using at least one of the glucoamylases described herein.
    Type: Application
    Filed: March 6, 2019
    Publication date: February 11, 2021
    Inventors: Jing Ge, Xiaogang Gu, Helong Hao, Karsten Matthias, Jinahua (Jalsen) Li, Wenting Li, Zhongmei Tang, Shukun Yu, Bo Zhong, Kun Zhong, Zhengzheng Zou
  • Patent number: 10767207
    Abstract: Fungal glucoamylases from Aspergillus fumigatus—expressed in Trichoderma reesei host cells (AfGATR) are provided. Trichoderma reesei host cells express AfGATRs at higher, or at least comparable, levels to natively expressed AfGA Aspergillus fumigatus. AfGATRs, including AfGA1TR and AfGA2TR, exhibit high activity at elevated temperatures and at low pH, so AfGATRs can be used efficiently in a process of saccharification in the presence of alpha-amylase, such as Aspergillus kawachii alpha-amylase (AkAA). AfGATRs advantageously catalyze starch saccharification to an oligosaccharide composition significantly enriched in DP1 (i.e., glucose) compared to the products of saccharification catalyzed by Aspergillus niger glucoamylase (AnGA) or native AfGA expressed in Aspergillus fumigatus. AfGATRs such as AfGA1TR, AfGA2TR or a variant thereof can be used at a lower dosage than AnGA and natively expressed AfGAs to produce comparable levels of glucose.
    Type: Grant
    Filed: February 21, 2019
    Date of Patent: September 8, 2020
    Assignee: Danisco US INC
    Inventors: Jing Ge, Ling Hua, Sung Ho Lee, Jalsen Li, Jayarama K Shetty, Zhongmei Tang, Bo Zhang, Kun Zhong
  • Publication number: 20200277632
    Abstract: Described are methods of saccharifying starch-containing materials using a glucoamylase, as well as the methods of producing fermentation products and the fermentation products produced by the method thereof.
    Type: Application
    Filed: August 30, 2018
    Publication date: September 3, 2020
    Inventors: Zhongmei Tang, Helong Hao, Zhiyong Xie, Zhenghong Zhang
  • Publication number: 20200095614
    Abstract: Described are compositions and methods relating the use of ?-glucosidase to increase the production of ethanol from a corn fiber product in a starch hydrolysis process.
    Type: Application
    Filed: December 15, 2017
    Publication date: March 26, 2020
    Inventors: Jeffrey V. Miller, Bradley Roger Kelemen, Pim Van Der Kley, Igor Nikolaev, Su Yin Marina Chow, Monica Tse, Jing Ge, Zhongmei Tang, Kirstin Yasuko Nose Crotty
  • 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
  • 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: 20190177757
    Abstract: Fungal glucoamylases from Aspergillus fumigatus—expressed in Trichoderma reesei host cells (AfGATR) are provided. Trichoderma reesei host cells express AfGATRs at higher, or at least comparable, levels to natively expressed AfGA Aspergillus fumigatus. AfGATRs, including AfGA1TR and AfGA2TR, exhibit high activity at elevated temperatures and at low pH, so AfGATRs can be used efficiently in a process of saccharification in the presence of alpha-amylase, such as Aspergillus kawachii alpha-amylase (AkAA). AfGATRs advantageously catalyze starch saccharification to an oligosaccharide composition significantly enriched in DP1 (i.e., glucose) compared to the products of saccharification catalyzed by Aspergillus niger glucoamylase (AnGA) or native AfGA expressed in Aspergillus fumigatus. AfGATRs such as AfGA1TR, AfGA2TR or a variant thereof can be used at a lower dosage than AnGA and natively expressed AfGAs to produce comparable levels of glucose.
    Type: Application
    Filed: February 21, 2019
    Publication date: June 13, 2019
    Inventors: Jing Ge, Ling Hua, Sung Ho Lee, Jalsen Li, Jayarama K Shetty, Zhongmei Tang, Bo Zhang, Kun Zhong
  • 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: 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: 20190010473
    Abstract: Described are methods and compositions relating to granular starch-converting glucoamylases and ?-amylases. The enzymes can be used to perform enzymatic starch hydrolysis of granular starch at or below the gelatinization temperature of insoluble granular starch.
    Type: Application
    Filed: December 20, 2016
    Publication date: January 10, 2019
    Inventors: Bart C. Koops, Paula Johanna Maria Teunissen, Marco Van Brussel-Zwijnen, Martijn Scheffers, Kees-Jan Guijt, Zhengzheng Zou, Zhongmei Tang, Zhen Qian, Jing Ge, Zhenghong Zhang
  • Publication number: 20190002854
    Abstract: Described are methods and compositions relating to granular starch-converting glucoamylases and ?-amylases. The enzymes can be used to perform enzymatic starch hydrolysis of granular starch at or below the gelatinization temperature of insoluble granular starch.
    Type: Application
    Filed: December 20, 2016
    Publication date: January 3, 2019
    Inventors: Bart C. Koops, Paula Johanna Maria Teunissen, Marco Van Brussel-Zwijnen, Martijn Scheffers, Kees-Jan Guijt, Zhengzheng Zou, Zhongmei Tang, Zhen Qian, Jing Ge, Zhenghong Zhang